diff options
Diffstat (limited to 'lib/ssl/doc/src')
| -rw-r--r-- | lib/ssl/doc/src/Makefile | 11 | ||||
| -rw-r--r-- | lib/ssl/doc/src/notes.xml | 685 | ||||
| -rw-r--r-- | lib/ssl/doc/src/specs.xml | 9 | ||||
| -rw-r--r-- | lib/ssl/doc/src/ssl.xml | 1928 | ||||
| -rw-r--r-- | lib/ssl/doc/src/ssl_app.xml | 57 | ||||
| -rw-r--r-- | lib/ssl/doc/src/ssl_crl_cache.xml | 37 | ||||
| -rw-r--r-- | lib/ssl/doc/src/ssl_crl_cache_api.xml | 71 | ||||
| -rw-r--r-- | lib/ssl/doc/src/ssl_distribution.xml | 50 | ||||
| -rw-r--r-- | lib/ssl/doc/src/ssl_introduction.xml | 7 | ||||
| -rw-r--r-- | lib/ssl/doc/src/ssl_protocol.xml | 26 | ||||
| -rw-r--r-- | lib/ssl/doc/src/ssl_session_cache_api.xml | 109 | ||||
| -rw-r--r-- | lib/ssl/doc/src/using_ssl.xml | 42 |
12 files changed, 1984 insertions, 1048 deletions
diff --git a/lib/ssl/doc/src/Makefile b/lib/ssl/doc/src/Makefile index f9128e8e45..7cf251d8f9 100644 --- a/lib/ssl/doc/src/Makefile +++ b/lib/ssl/doc/src/Makefile @@ -1,7 +1,7 @@ # # %CopyrightBegin% # -# Copyright Ericsson AB 1999-2017. All Rights Reserved. +# Copyright Ericsson AB 1999-2018. All Rights Reserved. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. @@ -80,11 +80,16 @@ HTML_REF_MAN_FILE = $(HTMLDIR)/index.html TOP_PDF_FILE = $(PDFDIR)/$(APPLICATION)-$(VSN).pdf +SPECS_FILES = $(XML_REF3_FILES:%.xml=$(SPECDIR)/specs_%.xml) + +TOP_SPECS_FILE = specs.xml + # ---------------------------------------------------- # FLAGS # ---------------------------------------------------- XML_FLAGS += DVIPS_FLAGS += +SPECS_FLAGS = -I../../../public_key/include -I../../../public_key/src -I../../.. # ---------------------------------------------------- # Targets @@ -92,7 +97,7 @@ DVIPS_FLAGS += $(HTMLDIR)/%.gif: %.gif $(INSTALL_DATA) $< $@ -docs: pdf html man +docs: html pdf man $(TOP_PDF_FILE): $(XML_FILES) @@ -102,8 +107,10 @@ html: gifs $(HTML_REF_MAN_FILE) clean clean_docs: rm -rf $(HTMLDIR)/* + rm -rf $(XMLDIR) rm -f $(MAN3DIR)/* rm -f $(TOP_PDF_FILE) $(TOP_PDF_FILE:%.pdf=%.fo) + rm -f $(SPECS_FILES) rm -f errs core *~ man: $(MAN3_FILES) $(MAN6_FILES) diff --git a/lib/ssl/doc/src/notes.xml b/lib/ssl/doc/src/notes.xml index 34fe352d08..01323aaa1d 100644 --- a/lib/ssl/doc/src/notes.xml +++ b/lib/ssl/doc/src/notes.xml @@ -4,7 +4,7 @@ <chapter> <header> <copyright> - <year>1999</year><year>2017</year> + <year>1999</year><year>2018</year> <holder>Ericsson AB. All Rights Reserved.</holder> </copyright> <legalnotice> @@ -27,6 +27,687 @@ </header> <p>This document describes the changes made to the SSL application.</p> +<section><title>SSL 9.2.3</title> + + <section><title>Fixed Bugs and Malfunctions</title> + <list> + <item> + <p> + Missing check of size of user_data_buffer made internal + socket behave as an active socket instead of active N. + This could cause memory problems.</p> + <p> + Own Id: OTP-15802 Aux Id: ERL-934 </p> + </item> + </list> + </section> + + + <section><title>Improvements and New Features</title> + <list> + <item> + <p> + Back port of bug fix ERL-893 from OTP-22 and document + enhancements that will solve dialyzer warnings for users + of the ssl application.</p> + <p> + This change also affects public_key, eldap (and inet + doc).</p> + <p> + Own Id: OTP-15785 Aux Id: ERL-929, ERL-893, PR-2215 </p> + </item> + </list> + </section> + +</section> + +<section><title>SSL 9.2.2</title> + + <section><title>Fixed Bugs and Malfunctions</title> + <list> + <item> + <p> + With the default BEAST Mitigation strategy for TLS 1.0 an + empty TLS fragment could be sent after a one-byte + fragment. This glitch has been fixed.</p> + <p> + Own Id: OTP-15054 Aux Id: ERIERL-346 </p> + </item> + </list> + </section> + +</section> + +<section><title>SSL 9.2.1</title> + + <section><title>Fixed Bugs and Malfunctions</title> + <list> + <item> + <p> + The timeout for a passive receive was sometimes not + cancelled and later caused a server crash. This bug has + now been corrected.</p> + <p> + Own Id: OTP-14701 Aux Id: ERL-883, ERL-884 </p> + </item> + <item> + <p> + Add tag for passive message (active N) in cb_info to + retain transport transparency.</p> + <p> + Own Id: OTP-15679 Aux Id: ERL-861 </p> + </item> + </list> + </section> + +</section> + +<section><title>SSL 9.2</title> + + <section><title>Fixed Bugs and Malfunctions</title> + <list> + <item> + <p> + Fix bug that an incorrect return value for gen_statem + could be created when alert was a result of handling + renegotiation info extension</p> + <p> + Own Id: OTP-15502</p> + </item> + <item> + <p> + Correct check for 3des_ede_cbc, could cause ssl to claim + to support 3des_ede_cbc when cryptolib does not.</p> + <p> + Own Id: OTP-15539</p> + </item> + <item> + <p> + Improved DTLS error handling, avoids unexpected + connection failure in rare cases.</p> + <p> + Own Id: OTP-15561</p> + </item> + <item> + <p> + Corrected active once emulation bug that could cause the + ssl_closed meassage to not be sent. Bug introduced by + OTP-15449</p> + <p> + Own Id: OTP-15666 Aux Id: ERIERL-316, </p> + </item> + </list> + </section> + + + <section><title>Improvements and New Features</title> + <list> + <item> + <p> + Add client option {reuse_session, SessionID::binary()} + that can be used together with new option value + {reuse_sessions, save}. This makes it possible to reuse a + session from a specific connection establishment.</p> + <p> + Own Id: OTP-15369</p> + </item> + <item> + <p> + The Reason part of of the error return from the functions + connect and handshake has a better and documented format. + This will sometimes differ from previous returned + reasons, however those where only documented as term() + and should for that reason not be relied on.</p> + <p> + *** POTENTIAL INCOMPATIBILITY ***</p> + <p> + Own Id: OTP-15423</p> + </item> + <item> + <p> + Refactor of state handling to improve TLS application + data throughput and reduce CPU overhead</p> + <p> + Own Id: OTP-15445</p> + </item> + <item> + <p> + The SSL code has been optimized in many small ways to + reduce CPU load for encryption/decryption, especially for + Erlang's distribution protocol over TLS.</p> + <p> + Own Id: OTP-15529</p> + </item> + <item> + <p> + Add support for active N</p> + <p> + Own Id: OTP-15665 Aux Id: ERL-811, PR-2072 </p> + </item> + </list> + </section> + +</section> + +<section><title>SSL 9.1.2</title> + + <section><title>Fixed Bugs and Malfunctions</title> + <list> + <item> + <p> + Fix encoding of the SRP extension length field in ssl. + The old encoding of the SRP extension length could cause + interoperability problems with third party SSL + implementations when SRP was used.</p> + <p> + Own Id: OTP-15477 Aux Id: ERL-790 </p> + </item> + <item> + <p> + Guarantee active once data delivery, handling TCP stream + properly.</p> + <p> + Own Id: OTP-15504 Aux Id: ERL-371 </p> + </item> + <item> + <p> + Correct gen_statem returns for some error cases</p> + <p> + Own Id: OTP-15505</p> + </item> + </list> + </section> + +</section> + +<section><title>SSL 9.1.1</title> + + <section><title>Fixed Bugs and Malfunctions</title> + <list> + <item> + <p> + Fixed renegotiation bug. Client did not handle server + initiated renegotiation correctly after rewrite to two + connection processes, due to ERL-622 commit + d87ac1c55188f5ba5cdf72384125d94d42118c18. This could + manifest it self as a " bad_record_mac" alert.</p> + <p> + Also included are some optimizations</p> + <p> + Own Id: OTP-15489 Aux Id: ERL-308 </p> + </item> + </list> + </section> + +</section> + +<section><title>SSL 9.1</title> + + <section><title>Fixed Bugs and Malfunctions</title> + <list> + <item> + <p> + PEM cache was not evicting expired entries due to due to + timezone confusion.</p> + <p> + Own Id: OTP-15368</p> + </item> + <item> + <p> + Make sure an error is returned if a "transport_accept + socket" is used in some other call than ssl:handshake* or + ssl:controlling_process</p> + <p> + Own Id: OTP-15384 Aux Id: ERL-756 </p> + </item> + <item> + <p> + Fix timestamp handling in the PEM-cache could cause + entries to not be invalidated at the correct time.</p> + <p> + Own Id: OTP-15402</p> + </item> + <item> + <p> + Extend check for undelivered data at closing, could under + some circumstances fail to deliver all data that was + actually received.</p> + <p> + Own Id: OTP-15412 Aux Id: ERL-731 </p> + </item> + <item> + <p> + Correct signature check for TLS-1.2 that allows different + algorithms for signature of peer cert and peer cert key. + Not all allowed combinations where accepted.</p> + <p> + Own Id: OTP-15415 Aux Id: ERL-763 </p> + </item> + <item> + <p> + Correct gen_statem return value, could cause + renegotiation to fail.</p> + <p> + Own Id: OTP-15418 Aux Id: ERL-770 </p> + </item> + </list> + </section> + + + <section><title>Improvements and New Features</title> + <list> + <item> + <p> + Add engine support for RSA key exchange</p> + <p> + Own Id: OTP-15420 Aux Id: ERIERL-268 </p> + </item> + <item> + <p> + ssl now uses active n internally to boost performance. + Old active once behavior can be restored by setting + application variable see manual page for ssl application + (man 6).</p> + <p> + *** POTENTIAL INCOMPATIBILITY ***</p> + <p> + Own Id: OTP-15449</p> + </item> + </list> + </section> + +</section> + +<section><title>SSL 9.0.3</title> + + <section><title>Fixed Bugs and Malfunctions</title> + <list> + <item> + <p> + Correct alert handling with new TLS sender process, from + ssl-9.0.2. CLOSE ALERTS could under some circumstances be + encoded using an incorrect cipher state. This would cause + the peer to regard them as unknown messages.</p> + <p> + Own Id: OTP-15337 Aux Id: ERL-738 </p> + </item> + <item> + <p> + Correct handling of socket packet option with new TLS + sender process, from ssl-9.0.2. When changing the socket + option {packet, 1|2|3|4} with ssl:setopts/2 the option + must internally be propagated to the sender process as + well as the reader process as this particular option also + affects the data to be sent.</p> + <p> + Own Id: OTP-15348 Aux Id: ERL-747 </p> + </item> + </list> + </section> + +</section> + +<section><title>SSL 9.0.2</title> + + <section><title>Fixed Bugs and Malfunctions</title> + <list> + <item> + <p> + Use separate processes for sending and receiving + application data for TLS connections to avoid potential + deadlock that was most likely to occur when using TLS for + Erlang distribution. Note does not change the API.</p> + <p> + Own Id: OTP-15122</p> + </item> + <item> + <p> + Correct handling of empty server SNI extension</p> + <p> + Own Id: OTP-15168</p> + </item> + <item> + <p> + Correct PSK cipher suite handling and add + selected_cipher_suite to connection information</p> + <p> + Own Id: OTP-15172</p> + </item> + <item> + <p> + Adopt to the fact that cipher suite sign restriction are + relaxed in TLS-1.2</p> + <p> + Own Id: OTP-15173</p> + </item> + <item> + <p> + Enhance error handling of non existing PEM files</p> + <p> + Own Id: OTP-15174</p> + </item> + <item> + <p> + Correct close handling of transport accepted sockets in + the error state</p> + <p> + Own Id: OTP-15216</p> + </item> + <item> + <p> + Correct PEM cache to not add references to empty entries + when PEM file does not exist.</p> + <p> + Own Id: OTP-15224</p> + </item> + <item> + <p> + Correct handling of all PSK cipher suites</p> + <p> + Before only some PSK suites would be correctly negotiated + and most PSK ciphers suites would fail the connection.</p> + <p> + Own Id: OTP-15285</p> + </item> + </list> + </section> + + + <section><title>Improvements and New Features</title> + <list> + <item> + <p> + TLS will now try to order certificate chains if they + appear to be unordered. That is prior to TLS 1.3, + “certificate_list” ordering was required to be + strict, however some implementations already allowed for + some flexibility. For maximum compatibility, all + implementations SHOULD be prepared to handle potentially + extraneous certificates and arbitrary orderings from any + TLS version.</p> + <p> + Own Id: OTP-12983</p> + </item> + <item> + <p> + TLS will now try to reconstructed an incomplete + certificate chains from its local CA-database and use + that data for the certificate path validation. This + especially makes sense for partial chains as then the + peer might not send an intermediate CA as it is + considered the trusted root in that case.</p> + <p> + Own Id: OTP-15060</p> + </item> + <item> + <p> + Option keyfile defaults to certfile and should be trumped + with key. This failed for engine keys.</p> + <p> + Own Id: OTP-15193</p> + </item> + <item> + <p> + Error message improvement when own certificate has + decoding issues, see also issue ERL-668.</p> + <p> + Own Id: OTP-15234</p> + </item> + <item> + <p> + Correct dialyzer spec for key option</p> + <p> + Own Id: OTP-15281</p> + </item> + </list> + </section> + +</section> + +<section><title>SSL 9.0.1</title> + + <section><title>Fixed Bugs and Malfunctions</title> + <list> + <item> + <p> + Correct cipher suite handling for ECDHE_*, the incorrect + handling could cause an incorrrect suite to be selected + and most likly fail the handshake.</p> + <p> + Own Id: OTP-15203</p> + </item> + </list> + </section> + +</section> + +<section><title>SSL 9.0</title> + + <section><title>Fixed Bugs and Malfunctions</title> + <list> + <item> + <p> + Correct handling of ECDH suites.</p> + <p> + Own Id: OTP-14974</p> + </item> + <item> + <p> + Proper handling of clients that choose to send an empty + answer to a certificate request</p> + <p> + Own Id: OTP-15050</p> + </item> + </list> + </section> + + + <section><title>Improvements and New Features</title> + <list> + <item> + <p> + Distribution over SSL (inet_tls) has, to improve + performance, been rewritten to not use intermediate + processes and ports.</p> + <p> + Own Id: OTP-14465</p> + </item> + <item> + <p> + Add suport for ECDHE_PSK cipher suites</p> + <p> + Own Id: OTP-14547</p> + </item> + <item> + <p> + For security reasons no longer support 3-DES cipher + suites by default</p> + <p> + *** INCOMPATIBILITY with possibly ***</p> + <p> + Own Id: OTP-14768</p> + </item> + <item> + <p> + For security reasons RSA-key exchange cipher suites are + no longer supported by default</p> + <p> + *** INCOMPATIBILITY with possible ***</p> + <p> + Own Id: OTP-14769</p> + </item> + <item> + <p> + The interoperability option to fallback to insecure + renegotiation now has to be explicitly turned on.</p> + <p> + *** INCOMPATIBILITY with possibly ***</p> + <p> + Own Id: OTP-14789</p> + </item> + <item> + <p> + Drop support for SSLv2 enabled clients. SSLv2 has been + broken for decades and never supported by the Erlang + SSL/TLS implementation. This option was by default + disabled and enabling it has proved to sometimes break + connections not using SSLv2 enabled clients.</p> + <p> + *** POTENTIAL INCOMPATIBILITY ***</p> + <p> + Own Id: OTP-14824</p> + </item> + <item> + <p> + Remove CHACHA20_POLY1305 ciphers form default for now. We + have discovered interoperability problems, ERL-538, that + we believe needs to be solved in crypto.</p> + <p> + *** INCOMPATIBILITY with possibly ***</p> + <p> + Own Id: OTP-14882</p> + </item> + <item> + <p> + Generalize DTLS packet multiplexing to make it easier to + add future DTLS features and uses.</p> + <p> + Own Id: OTP-14888</p> + </item> + <item> + <p> + Use uri_string module instead of http_uri.</p> + <p> + Own Id: OTP-14902</p> + </item> + <item> + <p> + The SSL distribution protocol <c>-proto inet_tls</c> has + stopped setting the SSL option + <c>server_name_indication</c>. New verify funs for client + and server in <c>inet_tls_dist</c> has been added, not + documented yet, that checks node name if present in peer + certificate. Usage is still also yet to be documented.</p> + <p> + Own Id: OTP-14969 Aux Id: OTP-14465, ERL-598 </p> + </item> + <item> + <p> + Deprecate ssl:ssl_accept/[1,2,3] in favour of + ssl:handshake/[1,2,3]</p> + <p> + Own Id: OTP-15056</p> + </item> + <item> + <p> + Customizes the hostname verification of the peer + certificate, as different protocols that use TLS such as + HTTP or LDAP may want to do it differently</p> + <p> + Own Id: OTP-15102 Aux Id: ERL-542, OTP-14962 </p> + </item> + <item> + <p> + Add utility function for converting erlang cipher suites + to a string represenation (ERL-600).</p> + <p> + Own Id: OTP-15106</p> + </item> + <item> + <p> + First version with support for DTLS</p> + <p> + Own Id: OTP-15142</p> + </item> + </list> + </section> + +</section> + +<section><title>SSL 8.2.6.4</title> + + <section><title>Fixed Bugs and Malfunctions</title> + <list> + <item> + <p> + Add engine support for RSA key exchange</p> + <p> + Own Id: OTP-15420</p> + </item> + </list> + </section> + +</section> + +<section><title>SSL 8.2.6.3</title> + + <section><title>Fixed Bugs and Malfunctions</title> + <list> + <item> + <p> + Extend check for undelivered data at closing, could under + some circumstances fail to deliverd all data that was + acctualy recivied.</p> + <p> + Own Id: OTP-15412</p> + </item> + </list> + </section> + +</section> + +<section><title>SSL 8.2.6.2</title> + + <section><title>Fixed Bugs and Malfunctions</title> + <list> + <item> + <p> + Correct handling of empty server SNI extension</p> + <p> + Own Id: OTP-15168</p> + </item> + <item> + <p> + Correct cipher suite handling for ECDHE_*, the incorrect + handling could cause an incorrrect suite to be selected + and most likly fail the handshake.</p> + <p> + Own Id: OTP-15203</p> + </item> + </list> + </section> + +</section> + +<section><title>SSL 8.2.6.1</title> + + <section><title>Fixed Bugs and Malfunctions</title> + <list> + <item> + <p> + Improve cipher suite handling correcting ECC and TLS-1.2 + requierments. Backport of solution for ERL-641</p> + <p> + Own Id: OTP-15178</p> + </item> + </list> + </section> + + + <section><title>Improvements and New Features</title> + <list> + <item> + <p> + Option keyfile defaults to certfile and should be trumped + with key. This failed for engine keys.</p> + <p> + Own Id: OTP-15193</p> + </item> + </list> + </section> + +</section> + <section><title>SSL 8.2.6</title> <section><title>Fixed Bugs and Malfunctions</title> @@ -2805,5 +3486,3 @@ </section> </section> </chapter> - - diff --git a/lib/ssl/doc/src/specs.xml b/lib/ssl/doc/src/specs.xml new file mode 100644 index 0000000000..50e9428fec --- /dev/null +++ b/lib/ssl/doc/src/specs.xml @@ -0,0 +1,9 @@ +<?xml version="1.0" encoding="utf-8" ?> +<specs xmlns:xi="http://www.w3.org/2001/XInclude"> + <xi:include href="../specs/specs_ssl_crl_cache_api.xml"/> + <xi:include href="../specs/specs_ssl_crl_cache.xml"/> + <xi:include href="../specs/specs_ssl_session_cache_api.xml"/> + <xi:include href="../specs/specs_ssl.xml"/> +</specs> + + diff --git a/lib/ssl/doc/src/ssl.xml b/lib/ssl/doc/src/ssl.xml index 3db5aa19ac..c448d345de 100644 --- a/lib/ssl/doc/src/ssl.xml +++ b/lib/ssl/doc/src/ssl.xml @@ -4,7 +4,7 @@ <erlref> <header> <copyright> - <year>1999</year><year>2017</year> + <year>1999</year><year>2018</year> <holder>Ericsson AB. All Rights Reserved.</holder> </copyright> <legalnotice> @@ -28,256 +28,344 @@ <rev></rev> <file>ssl.xml</file> </header> - <module>ssl</module> + <module since="">ssl</module> <modulesummary>Interface Functions for Secure Socket Layer</modulesummary> <description> <p> - This module contains interface functions for the SSL/TLS protocol. + This module contains interface functions for the SSL/TLS/DTLS protocol. For detailed information about the supported standards see <seealso marker="ssl_app">ssl(6)</seealso>. </p> </description> - - <section> - <title>DATA TYPES</title> - <p>The following data types are used in the functions for SSL:</p> - - <taglist> - - <tag><c>boolean() =</c></tag> - <item><p><c>true | false</c></p></item> - - <tag><c>option() =</c></tag> - <item><p><c>socketoption() | ssl_option() | transport_option()</c></p> - </item> - - <tag><c>socketoption() =</c></tag> - <item><p><c>proplists:property()</c></p> - <p>The default socket options are - <c>[{mode,list},{packet, 0},{header, 0},{active, true}]</c>.</p> - <p>For valid options, see the - <seealso marker="kernel:inet">inet(3)</seealso> and - <seealso marker="kernel:gen_tcp">gen_tcp(3)</seealso> manual pages - in Kernel.</p></item> - - <tag><marker id="type-ssloption"/><c>ssl_option() =</c></tag> - <item> - <p><c>{verify, verify_type()}</c></p> - <p><c>| {verify_fun, {fun(), term()}}</c></p> - <p><c>| {fail_if_no_peer_cert, boolean()}</c></p> - <p><c>| {depth, integer()}</c></p> - <p><c>| {cert, public_key:der_encoded()}</c></p> - <p><c>| {certfile, path()}</c></p> - <p><c>| {key, {'RSAPrivateKey'| 'DSAPrivateKey' | 'ECPrivateKey' - | 'PrivateKeyInfo', public_key:der_encoded()} | - #{algorithm := rsa | dss | ecdsa, - engine := crypto:engine_ref(), key_id := crypto:key_id(), password => crypto:password()}</c></p> - <p><c>| {keyfile, path()}</c></p> - <p><c>| {password, string()}</c></p> - <p><c>| {cacerts, [public_key:der_encoded()]}</c></p> - <p><c>| {cacertfile, path()}</c></p> - <p><c>| {dh, public_key:der_encoded()}</c></p> - <p><c>| {dhfile, path()}</c></p> - <p><c>| {ciphers, ciphers()}</c></p> - <p><c>| {user_lookup_fun, {fun(), term()}}, {psk_identity, string()}, - {srp_identity, {string(), string()}}</c></p> - <p><c>| {reuse_sessions, boolean()}</c></p> - <p><c>| {reuse_session, fun()} {next_protocols_advertised, [binary()]}</c></p> - <p><c>| {client_preferred_next_protocols, {client | server, - [binary()]} | {client | server, [binary()], binary()}}</c></p> - <p><c>| {log_alert, boolean()}</c></p> - <p><c>| {server_name_indication, hostname() | disable}</c></p> - <p><c>| {sni_hosts, [{hostname(), [ssl_option()]}]}</c></p> - <p><c>| {sni_fun, SNIfun::fun()}</c></p> - </item> - - <tag><c>transport_option() =</c></tag> - <item><p><c>{cb_info, {CallbackModule::atom(), DataTag::atom(), - - ClosedTag::atom(), ErrTag:atom()}}</c></p> - <p>Defaults to <c>{gen_tcp, tcp, tcp_closed, tcp_error}</c>. Can be used - to customize the transport layer. The callback module must implement a - reliable transport protocol, behave as <c>gen_tcp</c>, and have functions - corresponding to <c>inet:setopts/2</c>, <c>inet:getopts/2</c>, - <c>inet:peername/1</c>, <c>inet:sockname/1</c>, and <c>inet:port/1</c>. - The callback <c>gen_tcp</c> is treated specially and calls <c>inet</c> - directly.</p> - <taglist> - <tag><c>CallbackModule =</c></tag> - <item><p><c>atom()</c></p></item> - <tag><c>DataTag =</c></tag> - <item><p><c>atom()</c></p> - <p>Used in socket data message.</p></item> - <tag><c>ClosedTag =</c></tag> - <item><p><c>atom()</c></p> - <p>Used in socket close message.</p></item> - </taglist> - </item> - <tag><c>verify_type() =</c></tag> - <item><p><c>verify_none | verify_peer</c></p></item> + <!-- + ================================================================ + = Data types = + ================================================================ + --> - <tag><c>path() =</c></tag> - <item><p><c>string()</c></p> - <p>Represents a file path.</p></item> + <datatypes> + <datatype_title>Types used in SSL/TLS/DTLS</datatype_title> - <tag><c>public_key:der_encoded() =</c></tag> - <item><p><c>binary()</c></p> - <p>ASN.1 DER-encoded entity as an Erlang binary.</p></item> + + <datatype> + <name name="socket"/> + </datatype> + + <datatype> + <name name="sslsocket"/> + <desc> + <p>An opaque reference to the TLS/DTLS connection, may be used for equality matching.</p> + </desc> + </datatype> + + <datatype> + <name name="tls_option"/> + </datatype> + + <datatype> + <name name="tls_client_option"/> + </datatype> + + <datatype> + <name name="tls_server_option"/> + </datatype> + + + <datatype> + <name name="socket_option"/> + <desc> + <p>The default socket options are + <c>[{mode,list},{packet, 0},{header, 0},{active, true}]</c>.</p> + <p>For valid options, see the + <seealso marker="kernel:inet">inet(3)</seealso>, + <seealso marker="kernel:gen_tcp">gen_tcp(3)</seealso> and + <seealso marker="kernel:gen_tcp">gen_udp(3)</seealso> + manual pages in Kernel. Note that stream oriented options such as packet + are only relevant for SSL/TLS and not DTLS</p> + </desc> + </datatype> - <tag><c>host() =</c></tag> - <item><p><c>hostname() | ipaddress()</c></p></item> + <datatype> + <name name="active_msgs"/> + <desc> + <p>When a TLS/DTLS socket is in active mode (the default), data from the + socket is delivered to the owner of the socket in the form of + messages as described above.</p> + <p>The <c>ssl_passive</c> message is sent only when the socket is in + <c>{active, N}</c> mode and the counter dropped to 0. It indicates + that the socket has transitioned to passive (<c>{active, false}</c>) mode.</p> + </desc> + </datatype> + + <datatype> + <name name="transport_option"/> + <desc> + <p>Defaults to <c>{gen_tcp, tcp, tcp_closed, tcp_error, + tcp_passive}</c> for TLS (for backward compatibility a four + tuple will be converted to a five tuple with the last element + "second_element"_passive) and <c>{gen_udp, udp, udp_closed, + udp_error}</c> for DTLS (might also be changed to five tuple in + the future). Can be used to customize the transport layer. The + tag values should be the values used by the underlying + transport in its active mode messages. For TLS the callback + module must implement a reliable transport protocol, behave as + <c>gen_tcp</c>, and have functions corresponding to + <c>inet:setopts/2</c>, <c>inet:getopts/2</c>, + <c>inet:peername/1</c>, <c>inet:sockname/1</c>, and + <c>inet:port/1</c>. The callback <c>gen_tcp</c> is treated + specially and calls <c>inet</c> directly. For DTLS this + feature must be considered exprimental. + </p> + </desc> + </datatype> + + <datatype> + <name name="host"/> + </datatype> - <tag><c>hostname() =</c></tag> - <item><p><c>string() - DNS hostname</c></p></item> + <datatype> + <name name="hostname"/> + </datatype> - <tag><c>ip_address() =</c></tag> - <item><p><c>{N1,N2,N3,N4} % IPv4 | {K1,K2,K3,K4,K5,K6,K7,K8} % IPv6 - </c></p></item> + <datatype> + <name name="ip_address"/> + </datatype> - <tag><c>sslsocket() =</c></tag> - <item><p>opaque()</p></item> + <datatype> + <name name="protocol_version"/> + </datatype> - <tag><marker id="type-protocol"/><c>protocol_version() =</c></tag> - <item><p><c>sslv3 | tlsv1 | 'tlsv1.1' | 'tlsv1.2'</c></p></item> + <datatype> + <name name="tls_version"/> + </datatype> - <tag><c>ciphers() =</c></tag> - <item><p><c>= [ciphersuite()]</c></p> - <p>Tuples and string formats accepted by versions - before ssl-8.2.4 will be converted for backwards compatibility</p></item> + <datatype> + <name name="dtls_version"/> + </datatype> - <tag><c>ciphersuite() =</c></tag> - <item><p><c> - #{key_exchange := key_exchange(), - cipher := cipher(), - mac := MAC::hash() | aead, - prf := PRF::hash() | default_prf} </c></p></item> + <datatype> + <name name="legacy_version"/> + </datatype> - <tag><c>key_exchange()=</c></tag> - <item><p><c>rsa | dhe_dss | dhe_rsa | dh_anon | psk | dhe_psk - | rsa_psk | srp_anon | srp_dss | srp_rsa | ecdh_anon | ecdh_ecdsa - | ecdhe_ecdsa | ecdh_rsa | ecdhe_rsa</c></p></item> + <datatype> + <name name="prf_random"/> + </datatype> + + <datatype> + <name name="verify_type"/> + </datatype> + + <datatype> + <name name="ciphers"/> + </datatype> + + <datatype> + <name name="erl_cipher_suite"/> + </datatype> + + <datatype> + <name name="cipher"/> + </datatype> + + <datatype> + <name name="legacy_cipher"/> + </datatype> + + <datatype> + <name name="cipher_filters"/> + </datatype> + + <datatype> + <name name="hash"/> + </datatype> - <tag><c>cipher() =</c></tag> - <item><p><c>rc4_128 | des_cbc | '3des_ede_cbc' - | aes_128_cbc | aes_256_cbc | aes_128_gcm | aes_256_gcm | chacha20_poly1305</c></p></item> + <datatype> + <name name="sha2"/> + </datatype> - <tag><c>hash() =</c></tag> - <item><p><c>md5 | sha | sha224 | sha256 | sha348 | sha512</c></p></item> + <datatype> + <name name="legacy_hash"/> + </datatype> - <tag><c>prf_random() =</c></tag> - <item><p><c>client_random | server_random</c></p></item> + <datatype> + <name name="old_cipher_suite"/> + </datatype> + + <datatype> + <name name="signature_algs"/> + </datatype> + + <datatype> + <name name="sign_algo"/> + </datatype> - <tag><c>cipher_filters() =</c></tag> - <item><p><c> [{key_exchange | cipher | mac | prf, algo_filter()}])</c></p></item> + <datatype> + <name name="kex_algo"/> + </datatype> - <tag><c>algo_filter() =</c></tag> - <item><p>fun(key_exchange() | cipher() | hash() | aead | default_prf) -> true | false </p></item> + <datatype> + <name name="algo_filter"/> + </datatype> - <tag><c>srp_param_type() =</c></tag> - <item><p><c>srp_1024 | srp_1536 | srp_2048 | srp_3072 - | srp_4096 | srp_6144 | srp_8192</c></p></item> + <datatype> + <name name="named_curve"/> + </datatype> - <tag><c>SNIfun::fun()</c></tag> - <item><p><c>= fun(ServerName :: string()) -> [ssl_option()]</c></p></item> + <datatype> + <name name="psk_identity"/> + </datatype> - <tag><c>named_curve() =</c></tag> - <item><p><c>sect571r1 | sect571k1 | secp521r1 | brainpoolP512r1 - | sect409k1 | sect409r1 | brainpoolP384r1 | secp384r1 - | sect283k1 | sect283r1 | brainpoolP256r1 | secp256k1 | secp256r1 - | sect239k1 | sect233k1 | sect233r1 | secp224k1 | secp224r1 - | sect193r1 | sect193r2 | secp192k1 | secp192r1 | sect163k1 - | sect163r1 | sect163r2 | secp160k1 | secp160r1 | secp160r2</c></p></item> + <datatype> + <name name="srp_identity"/> + </datatype> - </taglist> - </section> + <datatype> + <name name="srp_param_type"/> + </datatype> + + <datatype> + <name name="app_level_protocol"/> + </datatype> - <section> - <title>SSL OPTION DESCRIPTIONS - COMMON for SERVER and CLIENT</title> + <datatype> + <name name="protocol_extensions"/> + </datatype> - <p>The following options have the same meaning in the client and - the server:</p> - - <taglist> + <datatype> + <name name="error_alert"/> + </datatype> - <tag><c>{protocol, tls | dtls}</c></tag> - <item><p>Choose TLS or DTLS protocol for the transport layer security. - Defaults to <c>tls</c> Introduced in OTP 20, DTLS support is considered - experimental in this release. DTLS over other transports than UDP are not yet supported.</p></item> + <datatype> + <name name="tls_alert"/> + </datatype> - <tag><c>{cert, public_key:der_encoded()}</c></tag> - <item><p>The DER-encoded users certificate. If this option - is supplied, it overrides option <c>certfile</c>.</p></item> - - <tag><c>{certfile, path()}</c></tag> - <item><p>Path to a file containing the user certificate.</p></item> - - <tag> - <marker id="key_option_def"/> - <c>{key, {'RSAPrivateKey'| 'DSAPrivateKey' | 'ECPrivateKey' - |'PrivateKeyInfo', public_key:der_encoded()} | #{algorithm := rsa | dss | ecdsa, - engine := crypto:engine_ref(), key_id := crypto:key_id(), password => crypto:password()}</c></tag> - <item><p>The DER-encoded user's private key or a map refering to a crypto - engine and its key reference that optionally can be password protected, - seealso <seealso marker="crypto:crypto#engine_load-4"> crypto:engine_load/4 - </seealso> and <seealso marker="crypto:engine_load"> Crypto's Users Guide</seealso>. If this option - is supplied, it overrides option <c>keyfile</c>.</p></item> - - <tag><c>{keyfile, path()}</c></tag> - <item><p>Path to the file containing the user's - private PEM-encoded key. As PEM-files can contain several - entries, this option defaults to the same file as given by - option <c>certfile</c>.</p></item> - - <tag><c>{password, string()}</c></tag> - <item><p>String containing the user's password. Only used if the - private keyfile is password-protected.</p></item> - - <tag><c>{ciphers, ciphers()}</c></tag> - <item><p>Supported cipher suites. The function - <c>cipher_suites/0</c> can be used to find all ciphers that are - supported by default. <c>cipher_suites(all)</c> can be called - to find all available cipher suites. Pre-Shared Key - (<url href="http://www.ietf.org/rfc/rfc4279.txt">RFC 4279</url> and - <url href="http://www.ietf.org/rfc/rfc5487.txt">RFC 5487</url>), - Secure Remote Password - (<url href="http://www.ietf.org/rfc/rfc5054.txt">RFC 5054</url>), RC4 cipher suites, - and anonymous cipher suites only work if explicitly enabled by - this option; they are supported/enabled by the peer also. - Anonymous cipher suites are supported for testing purposes - only and are not be used when security matters.</p></item> - - <tag><c>{eccs, [named_curve()]}</c></tag> - <item><p> Allows to specify the order of preference for named curves - and to restrict their usage when using a cipher suite supporting them. - </p></item> - - <tag><c>{secure_renegotiate, boolean()}</c></tag> - <item><p>Specifies if to reject renegotiation attempt that does - not live up to - <url href="http://www.ietf.org/rfc/rfc5746.txt">RFC 5746</url>. - By default <c>secure_renegotiate</c> is set to <c>false</c>, - that is, secure renegotiation is used if possible, - but it falls back to insecure renegotiation if the peer - does not support - <url href="http://www.ietf.org/rfc/rfc5746.txt">RFC 5746</url>.</p> - </item> - - <tag><c>{depth, integer()}</c></tag> - <item><p>Maximum number of non-self-issued + <datatype> + <name name="reason"/> + </datatype> + + <datatype_title>TLS/DTLS OPTION DESCRIPTIONS - COMMON for SERVER and CLIENT</datatype_title> + + <datatype> + <name name="common_option"/> + </datatype> + + <datatype> + <name since="OTP 20" name="protocol"/> + <desc> + <p>Choose TLS or DTLS protocol for the transport layer security. + Defaults to <c>tls</c>. For DTLS other transports than UDP are not yet supported.</p> + </desc> + </datatype> + + <datatype> + <name name="handshake_completion"/> + <desc> + <p>Defaults to <c>full</c>. If hello is specified the handshake will + pause after the hello message and give the user a possibility make decisions + based on hello extensions before continuing or aborting the handshake by calling + <seealso marker="#handshake_continue-3"> handshake_continue/3</seealso> or + <seealso marker="#handshake_cancel-1"> handshake_cancel/1</seealso></p> + </desc> + </datatype> + + <datatype> + <name name="cert"/> + <desc> + <p>The DER-encoded users certificate. If this option + is supplied, it overrides option <c>certfile</c>.</p> + </desc> + </datatype> + + <datatype> + <name name="cert_pem"/> + <desc> + <p>Path to a file containing the user certificate on PEM format.</p> + </desc> + </datatype> + + <datatype> + <name name="key"/> + <desc> + <p>The DER-encoded user's private key or a map refering to a crypto + engine and its key reference that optionally can be password protected, + seealso <seealso marker="crypto:crypto#engine_load-4"> crypto:engine_load/4 + </seealso> and <seealso marker="crypto:engine_load"> Crypto's Users Guide</seealso>. If this option + is supplied, it overrides option <c>keyfile</c>.</p> + </desc> + </datatype> + + <datatype> + <name name="key_pem"/> + <desc> + <p>Path to the file containing the user's + private PEM-encoded key. As PEM-files can contain several + entries, this option defaults to the same file as given by + option <c>certfile</c>.</p> + </desc> + </datatype> + + <datatype> + <name name="key_password"/> + <desc> + <p>String containing the user's password. Only used if the + private keyfile is password-protected.</p> + </desc> + </datatype> + + <datatype> + <name name="cipher_suites"/> + <desc> + <p>Supported cipher suites. The function + <c>cipher_suites/2</c> can be used to find all ciphers that + are supported by default. <c>cipher_suites(all, 'tlsv1.2')</c> can be + called to find all available cipher suites. Pre-Shared Key + (<url href="http://www.ietf.org/rfc/rfc4279.txt">RFC + 4279</url> and <url + href="http://www.ietf.org/rfc/rfc5487.txt">RFC 5487</url>), + Secure Remote Password (<url + href="http://www.ietf.org/rfc/rfc5054.txt">RFC 5054</url>), + RC4, 3DES, DES cipher suites, and anonymous cipher suites only work if + explicitly enabled by this option; they are supported/enabled + by the peer also. Anonymous cipher suites are supported for + testing purposes only and are not be used when security + matters.</p> + </desc> + </datatype> + + <datatype> + <name name="secure_renegotiation"/> + <desc><p>Specifies if to reject renegotiation attempt that does + not live up to <url + href="http://www.ietf.org/rfc/rfc5746.txt">RFC 5746</url>. By + default <c>secure_renegotiate</c> is set to <c>true</c>, that + is, secure renegotiation is enforced. If set to <c>false</c> + secure renegotiation will still be used if possible, but it + falls back to insecure renegotiation if the peer does not + support <url href="http://www.ietf.org/rfc/rfc5746.txt">RFC + 5746</url>.</p> + </desc> + </datatype> + + <datatype> + <name name="allowed_cert_chain_length"/> + <desc><p>Maximum number of non-self-issued intermediate certificates that can follow the peer certificate in a valid certification path. So, if depth is 0 the PEER must be signed by the trusted ROOT-CA directly; if 1 the path can be PEER, CA, ROOT-CA; if 2 the path can be PEER, CA, CA, - ROOT-CA, and so on. The default value is 1.</p></item> - - <tag><marker id="verify_fun"/><c>{verify_fun, {Verifyfun :: fun(), InitialUserState :: - term()}}</c></tag> - <item><p>The verification fun is to be defined as follows:</p> + ROOT-CA, and so on. The default value is 1.</p> + </desc> + </datatype> + + <datatype> + <name name="custom_verify"/> + <desc> + <p>The verification fun is to be defined as follows:</p> <code> -fun(OtpCert :: #'OTPCertificate'{}, Event :: {bad_cert, Reason :: atom() | {revoked, -atom()}} | +fun(OtpCert :: #'OTPCertificate'{}, Event :: {bad_cert, Reason :: atom() | + {revoked, atom()}} | {extension, #'Extension'{}}, InitialUserState :: term()) -> {valid, UserState :: term()} | {valid_peer, UserState :: term()} | {fail, Reason :: term()} | {unknown, UserState :: term()}. @@ -285,24 +373,25 @@ atom()}} | <p>The verification fun is called during the X509-path validation when an error or an extension unknown to the SSL - application is encountered. It is also called - when a certificate is considered valid by the path validation - to allow access to each certificate in the path to the user - application. It differentiates between the peer - certificate and the CA certificates by using <c>valid_peer</c> or - <c>valid</c> as second argument to the verification fun. See the - <seealso marker="public_key:public_key_records">public_key User's - Guide</seealso> for definition of <c>#'OTPCertificate'{}</c> and - <c>#'Extension'{}</c>.</p> + application is encountered. It is also called when a + certificate is considered valid by the path validation to + allow access to each certificate in the path to the user + application. It differentiates between the peer certificate + and the CA certificates by using <c>valid_peer</c> or + <c>valid</c> as second argument to the verification fun. See + the <seealso marker="public_key:public_key_records">public_key + User's Guide</seealso> for definition of + <c>#'OTPCertificate'{}</c> and <c>#'Extension'{}</c>.</p> <list type="bulleted"> - <item><p>If the verify callback fun returns <c>{fail, Reason}</c>, - the verification process is immediately stopped, an alert is - sent to the peer, and the TLS/SSL handshake terminates.</p></item> + <item><p>If the verify callback fun returns <c>{fail, + Reason}</c>, the verification process is immediately + stopped, an alert is sent to the peer, and the TLS/DTLS + handshake terminates.</p></item> <item><p>If the verify callback fun returns <c>{valid, UserState}</c>, the verification process continues.</p></item> <item><p>If the verify callback fun always returns - <c>{valid, UserState}</c>, the TLS/SSL handshake does not + <c>{valid, UserState}</c>, the TLS/DTLS handshake does not terminate regarding verification failures and the connection is established.</p></item> <item><p>If called with an extension unknown to the user application, @@ -348,10 +437,12 @@ atom()}} | <taglist> <tag><c>unknown_ca</c></tag> - <item><p>No trusted CA was found in the trusted store. The trusted CA is - normally a so called ROOT CA, which is a self-signed certificate. Trust can - be claimed for an intermediate CA (trusted anchor does not have to be - self-signed according to X-509) by using option <c>partial_chain</c>.</p> + <item><p>No trusted CA was found in the trusted store. The + trusted CA is normally a so called ROOT CA, which is a + self-signed certificate. Trust can be claimed for an + intermediate CA (trusted anchor does not have to be + self-signed according to X-509) by using option + <c>partial_chain</c>.</p> </item> <tag><c>selfsigned_peer</c></tag> @@ -362,15 +453,17 @@ atom()}} | marker="public_key:public_key#pkix_path_validation-3">public_key:pkix_path_validation/3</seealso> </p></item> </taglist> - </item> - - <tag><c>{crl_check, boolean() | peer | best_effort }</c></tag> - <item> + </desc> + </datatype> + + <datatype> + <name name="crl_check"/> + <desc> <p>Perform CRL (Certificate Revocation List) verification <seealso marker="public_key:public_key#pkix_crls_validate-3"> - (public_key:pkix_crls_validate/3)</seealso> on all the certificates during the path validation - <seealso - marker="public_key:public_key#pkix_path_validation-3">(public_key:pkix_path_validation/3) + (public_key:pkix_crls_validate/3)</seealso> on all the + certificates during the path validation <seealso + marker="public_key:public_key#pkix_path_validation-3">(public_key:pkix_path_validation/3) </seealso> of the certificate chain. Defaults to <c>false</c>.</p> @@ -382,111 +475,111 @@ marker="public_key:public_key#pkix_path_validation-3">public_key:pkix_path_valid <item>if certificate revocation status can not be determined it will be accepted as valid.</item> </taglist> - + <p>The CA certificates specified for the connection will be used to construct the certificate chain validating the CRLs.</p> <p>The CRLs will be fetched from a local or external cache. See <seealso marker="ssl:ssl_crl_cache_api">ssl_crl_cache_api(3)</seealso>.</p> - </item> - - <tag><c>{crl_cache, {Module :: atom(), {DbHandle :: internal | term(), Args :: list()}}}</c></tag> - <item> - <p>Specify how to perform lookup and caching of certificate revocation lists. - <c>Module</c> defaults to <seealso marker="ssl:ssl_crl_cache">ssl_crl_cache</seealso> - with <c> DbHandle </c> being <c>internal</c> and an - empty argument list.</p> - - <p>There are two implementations available:</p> - - <taglist> - <tag><c>ssl_crl_cache</c></tag> - <item> - <p>This module maintains a cache of CRLs. CRLs can be - added to the cache using the function <seealso - marker="ssl:ssl_crl_cache#insert-1">ssl_crl_cache:insert/1</seealso>, - and optionally automatically fetched through HTTP if the - following argument is specified:</p> - - <taglist> - <tag><c>{http, timeout()}</c></tag> - <item><p> - Enables fetching of CRLs specified as http URIs in<seealso - marker="public_key:public_key_records">X509 certificate extensions</seealso>. - Requires the OTP inets application.</p> - </item> - </taglist> - </item> - - <tag><c>ssl_crl_hash_dir</c></tag> - <item> - <p>This module makes use of a directory where CRLs are - stored in files named by the hash of the issuer name.</p> - - <p>The file names consist of eight hexadecimal digits - followed by <c>.rN</c>, where <c>N</c> is an integer, - e.g. <c>1a2b3c4d.r0</c>. For the first version of the - CRL, <c>N</c> starts at zero, and for each new version, - <c>N</c> is incremented by one. The OpenSSL utility - <c>c_rehash</c> creates symlinks according to this - pattern.</p> - - <p>For a given hash value, this module finds all - consecutive <c>.r*</c> files starting from zero, and those - files taken together make up the revocation list. CRL - files whose <c>nextUpdate</c> fields are in the past, or - that are issued by a different CA that happens to have the - same name hash, are excluded.</p> - - <p>The following argument is required:</p> - - <taglist> - <tag><c>{dir, string()}</c></tag> - <item><p>Specifies the directory in which the CRLs can be found.</p></item> - </taglist> - - </item> - - <tag><c>max_handshake_size</c></tag> - <item> - <p>Integer (24 bits unsigned). Used to limit the size of - valid TLS handshake packets to avoid DoS attacks. - Defaults to 256*1024.</p> - </item> - - </taglist> + </desc> + </datatype> - </item> + <datatype> + <name name="crl_cache_opts"/> + <desc> + <p>Specify how to perform lookup and caching of certificate revocation lists. + <c>Module</c> defaults to <seealso marker="ssl:ssl_crl_cache">ssl_crl_cache</seealso> + with <c> DbHandle </c> being <c>internal</c> and an + empty argument list.</p> + + <p>There are two implementations available:</p> + + <taglist> + <tag><c>ssl_crl_cache</c></tag> + <item> + <p>This module maintains a cache of CRLs. CRLs can be + added to the cache using the function <seealso + marker="ssl:ssl_crl_cache#insert-1">ssl_crl_cache:insert/1</seealso>, + and optionally automatically fetched through HTTP if the + following argument is specified:</p> + + <taglist> + <tag><c>{http, timeout()}</c></tag> + <item><p> + Enables fetching of CRLs specified as http URIs in<seealso + marker="public_key:public_key_records">X509 certificate extensions</seealso>. + Requires the OTP inets application.</p> + </item> + </taglist> + </item> + + <tag><c>ssl_crl_hash_dir</c></tag> + <item> + <p>This module makes use of a directory where CRLs are + stored in files named by the hash of the issuer name.</p> + + <p>The file names consist of eight hexadecimal digits + followed by <c>.rN</c>, where <c>N</c> is an integer, + e.g. <c>1a2b3c4d.r0</c>. For the first version of the + CRL, <c>N</c> starts at zero, and for each new version, + <c>N</c> is incremented by one. The OpenSSL utility + <c>c_rehash</c> creates symlinks according to this + pattern.</p> + + <p>For a given hash value, this module finds all + consecutive <c>.r*</c> files starting from zero, and those + files taken together make up the revocation list. CRL + files whose <c>nextUpdate</c> fields are in the past, or + that are issued by a different CA that happens to have the + same name hash, are excluded.</p> + + <p>The following argument is required:</p> + + <taglist> + <tag><c>{dir, string()}</c></tag> + <item><p>Specifies the directory in which the CRLs can be found.</p></item> + </taglist> + </item> + </taglist> + </desc> + </datatype> + + <datatype> + <name name="root_fun"/> + <desc> + <code> +fun(Chain::[public_key:der_encoded()]) -> + {trusted_ca, DerCert::public_key:der_encoded()} | unknown_ca} + </code> + <p>Claim an intermediate CA in the chain as trusted. TLS then + performs <seealso + marker="public_key:public_key#pkix_path_validation-3">public_key:pkix_path_validation/3</seealso> + with the selected CA as trusted anchor and the rest of the chain.</p> + </desc> + </datatype> - <tag><c>{partial_chain, fun(Chain::[DerCert]) -> {trusted_ca, DerCert} | - unknown_ca }</c></tag> - <item><p>Claim an intermediate CA in the chain as trusted. TLS then - performs <seealso - marker="public_key:public_key#pkix_path_validation-3">public_key:pkix_path_validation/3</seealso> - with the selected CA as trusted anchor and the rest of the chain.</p></item> - <tag><c>{versions, [protocol_version()]}</c></tag> - <item><p>TLS protocol versions supported by started clients and servers. + <datatype> + <name name="protocol_versions"/> + <desc><p>TLS protocol versions supported by started clients and servers. This option overrides the application environment option - <c>protocol_version</c>. If the environment option is not set, it defaults + <c>protocol_version</c> and <c>dtls_protocol_version</c>. If the environment option is not set, it defaults to all versions, except SSL-3.0, supported by the SSL application. - See also <seealso marker="ssl:ssl_app">ssl(6).</seealso></p></item> + See also <seealso marker="ssl:ssl_app">ssl(6).</seealso></p> + </desc> + </datatype> - <tag><c>{hibernate_after, integer()|undefined}</c></tag> - <item><p>When an integer-value is specified, <c>ssl_connection</c> - goes into hibernation after the specified number of milliseconds - of inactivity, thus reducing its memory footprint. When - <c>undefined</c> is specified (this is the default), the process - never goes into hibernation.</p></item> - <tag><c>{user_lookup_fun, {Lookupfun :: fun(), UserState :: term()}}</c></tag> - <item><p>The lookup fun is to defined as follows:</p> + <datatype> + <name name="custom_user_lookup"/> + <desc><p>The lookup fun is to defined as follows:</p> <code> fun(psk, PSKIdentity ::string(), UserState :: term()) -> {ok, SharedSecret :: binary()} | error; fun(srp, Username :: string(), UserState :: term()) -> - {ok, {SRPParams :: srp_param_type(), Salt :: binary(), DerivedKey :: binary()}} | error. + {ok, {SRPParams :: srp_param_type(), Salt :: binary(), + DerivedKey :: binary()}} | error. </code> <p>For Pre-Shared Key (PSK) cipher suites, the lookup fun is @@ -502,20 +595,54 @@ fun(srp, Username :: string(), UserState :: term()) -> <url href="http://tools.ietf.org/html/rfc5054#section-2.4"> RFC 5054</url>: <c>crypto:sha([Salt, crypto:sha([Username, <<$:>>, Password])])</c> </p> - </item> + </desc> + </datatype> - <tag><c>{padding_check, boolean()}</c></tag> - <item><p>Affects TLS-1.0 connections only. + <datatype> + <name name="session_id"/> + <desc> + <p>Identifies a TLS session.</p> + </desc> + </datatype> + + <datatype> + <name name="log_alert"/> + <desc><p>If set to <c>false</c>, error reports are not displayed.</p> + </desc> + </datatype> + + <datatype> + <name name="hibernate_after"/> + <desc><p>When an integer-value is specified, <c>TLS/DTLS-connection</c> + goes into hibernation after the specified number of milliseconds + of inactivity, thus reducing its memory footprint. When + <c>undefined</c> is specified (this is the default), the process + never goes into hibernation.</p> + </desc> + </datatype> + + <datatype> + <name name="handshake_size"/> + <desc> + <p>Integer (24 bits unsigned). Used to limit the size of + valid TLS handshake packets to avoid DoS attacks. + Defaults to 256*1024.</p> + </desc> + </datatype> + + <datatype> + <name name="padding_check"/> + <desc><p>Affects TLS-1.0 connections only. If set to <c>false</c>, it disables the block cipher padding check to be able to interoperate with legacy software.</p> <warning><p>Using <c>{padding_check, boolean()}</c> makes TLS vulnerable to the Poodle attack.</p></warning> - </item> - - + </desc> + </datatype> - <tag><c>{beast_mitigation, one_n_minus_one | zero_n | disabled}</c></tag> - <item><p>Affects SSL-3.0 and TLS-1.0 connections only. Used to change the BEAST + <datatype> + <name name="beast_mitigation"/> + <desc><p>Affects SSL-3.0 and TLS-1.0 connections only. Used to change the BEAST mitigation strategy to interoperate with legacy software. Defaults to <c>one_n_minus_one</c>.</p> @@ -525,119 +652,170 @@ fun(srp, Username :: string(), UserState :: term()) -> <p><c>disabled</c> - Disable BEAST mitigation.</p> - <warning><p>Using <c>{beast_mitigation, disabled}</c> makes SSL or TLS + <warning><p>Using <c>{beast_mitigation, disabled}</c> makes SSL-3.0 or TLS-1.0 vulnerable to the BEAST attack.</p></warning> - </item> - </taglist> - - </section> - - <section> - <title>SSL OPTION DESCRIPTIONS - CLIENT SIDE</title> - - <p>The following options are client-specific or have a slightly different - meaning in the client than in the server:</p> - - <taglist> + </desc> + </datatype> + + <datatype> + <name name="ssl_imp"/> + <desc><p>Deprecated since OTP-17, has no affect.</p></desc> + </datatype> + + <datatype_title>TLS/DTLS OPTION DESCRIPTIONS - CLIENT</datatype_title> + + <datatype> + <name name="client_option"/> + </datatype> + + <datatype> + <name name="client_verify_type"/> + <desc><p>In mode <c>verify_none</c> the default behavior is to allow + all x509-path validation errors. See also option <seealso marker="#type-custom_verify">verify_fun</seealso>.</p> + </desc> + </datatype> - <tag><c>{verify, verify_type()}</c></tag> - <item><p>In mode <c>verify_none</c> the default behavior is to allow - all x509-path validation errors. See also option <c>verify_fun</c>.</p> - </item> + <datatype> + <name name="client_reuse_session"/> + <desc> + <p>Reuses a specific session earlier saved with the option + <c>{reuse_sessions, save} since OTP-21.3 </c> + </p> + </desc> + </datatype> - <tag><c>{reuse_sessions, boolean()}</c></tag> - <item><p>Specifies if the client is to try to reuse sessions - when possible.</p></item> + <datatype> + <name name="client_reuse_sessions"/> + <desc> + <p>When <c>save</c> is specified a new connection will be negotiated + and saved for later reuse. The session ID can be fetched with + <seealso marker="#connection_information-2">connection_information/2</seealso> + and used with the client option <seealso marker="#type-client_reuse_session">reuse_session</seealso> + The boolean value true specifies that if possible, automatized session reuse will + be performed. If a new session is created, and is unique in regard + to previous stored sessions, it will be saved for possible later reuse. Since OTP-21.3</p> + </desc> + </datatype> - <tag><c>{cacerts, [public_key:der_encoded()]}</c></tag> - <item><p>The DER-encoded trusted certificates. If this option - is supplied it overrides option <c>cacertfile</c>.</p></item> - - <tag><c>{cacertfile, path()}</c></tag> - <item><p>Path to a file containing PEM-encoded CA certificates. The CA + <datatype> + <name name="client_cacerts"/> + <desc> + <p>The DER-encoded trusted certificates. If this option + is supplied it overrides option <c>cacertfile</c>.</p> + </desc> + </datatype> + + <datatype> + <name name="client_cafile"/> + <desc> + <p>Path to a file containing PEM-encoded CA certificates. The CA certificates are used during server authentication and when building the client certificate chain.</p> - </item> - - <tag><c>{alpn_advertised_protocols, [binary()]}</c></tag> - <item> - <p>The list of protocols supported by the client to be sent to the - server to be used for an Application-Layer Protocol Negotiation (ALPN). - If the server supports ALPN then it will choose a protocol from this - list; otherwise it will fail the connection with a "no_application_protocol" - alert. A server that does not support ALPN will ignore this value.</p> - - <p>The list of protocols must not contain an empty binary.</p> - - <p>The negotiated protocol can be retrieved using the <c>negotiated_protocol/1</c> function.</p> - </item> - - <tag><c>{client_preferred_next_protocols, {Precedence :: server | client, ClientPrefs :: [binary()]}}</c><br/> - <c>{client_preferred_next_protocols, {Precedence :: server | client, ClientPrefs :: [binary()], Default :: binary()}}</c></tag> - <item> - <p>Indicates that the client is to try to perform Next Protocol - Negotiation.</p> - - <p>If precedence is server, the negotiated protocol is the - first protocol to be shown on the server advertised list, which is - also on the client preference list.</p> - - <p>If precedence is client, the negotiated protocol is the - first protocol to be shown on the client preference list, which is - also on the server advertised list.</p> - - <p>If the client does not support any of the server advertised - protocols or the server does not advertise any protocols, the - client falls back to the first protocol in its list or to the - default protocol (if a default is supplied). If the - server does not support Next Protocol Negotiation, the - connection terminates if no default protocol is supplied.</p> - </item> - - <tag><c>{psk_identity, string()}</c></tag> - <item><p>Specifies the identity the client presents to the server. - The matching secret is found by calling <c>user_lookup_fun</c>.</p> - </item> - - <tag><c>{srp_identity, {Username :: string(), Password :: string()} - </c></tag> - <item><p>Specifies the username and password to use to authenticate - to the server.</p></item> - - <tag><c>{server_name_indication, HostName :: hostname()}</c></tag> - <item><p>Specify the hostname to be used in TLS Server Name Indication extension. - If not specified it will default to the <c>Host</c> argument of <seealso marker="#connect-3">connect/[3,4]</seealso> - unless it is of type inet:ipaddress().</p> - <p> - The <c>HostName</c> will also be used in the hostname verification of the peer certificate using - <seealso marker="public_key:public_key#pkix_verify_hostname-2">public_key:pkix_verify_hostname/2</seealso>. - </p> - </item> - <tag><c>{server_name_indication, disable}</c></tag> - <item> - <p> Prevents the Server Name Indication extension from being sent and - disables the hostname verification check - <seealso marker="public_key:public_key#pkix_verify_hostname-2">public_key:pkix_verify_hostname/2</seealso> </p> - </item> - <tag><c>{fallback, boolean()}</c></tag> - <item> - <p> Send special cipher suite TLS_FALLBACK_SCSV to avoid undesired TLS version downgrade. - Defaults to false</p> - <warning><p>Note this option is not needed in normal TLS usage and should not be used - to implement new clients. But legacy clients that retries connections in the following manner</p> - - <p><c> ssl:connect(Host, Port, [...{versions, ['tlsv2', 'tlsv1.1', 'tlsv1', 'sslv3']}])</c></p> - <p><c> ssl:connect(Host, Port, [...{versions, [tlsv1.1', 'tlsv1', 'sslv3']}, {fallback, true}])</c></p> - <p><c> ssl:connect(Host, Port, [...{versions, ['tlsv1', 'sslv3']}, {fallback, true}]) </c></p> - <p><c> ssl:connect(Host, Port, [...{versions, ['sslv3']}, {fallback, true}]) </c></p> - - <p>may use it to avoid undesired TLS version downgrade. Note that TLS_FALLBACK_SCSV must also - be supported by the server for the prevention to work. - </p></warning> - </item> - <tag><marker id="client_signature_algs"/><c>{signature_algs, [{hash(), ecdsa | rsa | dsa}]}</c></tag> - <item> - <p>In addition to the algorithms negotiated by the cipher + </desc> + </datatype> + + <datatype> + <name name="client_alpn"/> + <desc> + <p>The list of protocols supported by the client to be sent to the + server to be used for an Application-Layer Protocol Negotiation (ALPN). + If the server supports ALPN then it will choose a protocol from this + list; otherwise it will fail the connection with a "no_application_protocol" + alert. A server that does not support ALPN will ignore this value.</p> + + <p>The list of protocols must not contain an empty binary.</p> + + <p>The negotiated protocol can be retrieved using the <c>negotiated_protocol/1</c> function.</p> + </desc> + </datatype> + + <datatype> + <name name="client_preferred_next_protocols"/> + <desc> + <p>Indicates that the client is to try to perform Next Protocol + Negotiation.</p> + + <p>If precedence is server, the negotiated protocol is the + first protocol to be shown on the server advertised list, which is + also on the client preference list.</p> + + <p>If precedence is client, the negotiated protocol is the + first protocol to be shown on the client preference list, which is + also on the server advertised list.</p> + + <p>If the client does not support any of the server advertised + protocols or the server does not advertise any protocols, the + client falls back to the first protocol in its list or to the + default protocol (if a default is supplied). If the + server does not support Next Protocol Negotiation, the + connection terminates if no default protocol is supplied.</p> + </desc> + </datatype> + + <datatype> + <name name="client_psk_identity"/> + <desc> + <p>Specifies the identity the client presents to the server. + The matching secret is found by calling <c>user_lookup_fun</c></p> + </desc> + </datatype> + + <datatype> + <name name="client_srp_identity"/> + <desc> + <p>Specifies the username and password to use to authenticate + to the server.</p> + </desc> + </datatype> + + <datatype> + <name name="sni"/> + <desc> + <p>Specify the hostname to be used in TLS Server Name Indication extension. + If not specified it will default to the <c>Host</c> argument of <seealso marker="#connect-3">connect/[3,4]</seealso> + unless it is of type inet:ipaddress().</p> + <p> + The <c>HostName</c> will also be used in the hostname verification of the peer certificate using + <seealso marker="public_key:public_key#pkix_verify_hostname-2">public_key:pkix_verify_hostname/2</seealso>. + </p> + <p> The special value <c>disable</c> prevents the Server Name Indication extension from being sent and + disables the hostname verification check + <seealso marker="public_key:public_key#pkix_verify_hostname-2">public_key:pkix_verify_hostname/2</seealso> </p> + </desc> + </datatype> + + <datatype> + <name name="customize_hostname_check"/> + <desc> + <p> Customizes the hostname verification of the peer certificate, as different protocols that use + TLS such as HTTP or LDAP may want to do it differently, for possible options see + <seealso marker="public_key:public_key#pkix_verify_hostname-3">public_key:pkix_verify_hostname/3</seealso> </p> + </desc> + </datatype> + + <datatype> + <name name="fallback"/> + <desc> + <p> Send special cipher suite TLS_FALLBACK_SCSV to avoid undesired TLS version downgrade. + Defaults to false</p> + <warning><p>Note this option is not needed in normal TLS usage and should not be used + to implement new clients. But legacy clients that retries connections in the following manner</p> + + <p><c> ssl:connect(Host, Port, [...{versions, ['tlsv2', 'tlsv1.1', 'tlsv1', 'sslv3']}])</c></p> + <p><c> ssl:connect(Host, Port, [...{versions, [tlsv1.1', 'tlsv1', 'sslv3']}, {fallback, true}])</c></p> + <p><c> ssl:connect(Host, Port, [...{versions, ['tlsv1', 'sslv3']}, {fallback, true}]) </c></p> + <p><c> ssl:connect(Host, Port, [...{versions, ['sslv3']}, {fallback, true}]) </c></p> + + <p>may use it to avoid undesired TLS version downgrade. Note that TLS_FALLBACK_SCSV must also + be supported by the server for the prevention to work. + </p></warning> + </desc> + </datatype> + + <datatype> + <name name="client_signature_algs"/> + <desc> + <p>In addition to the algorithms negotiated by the cipher suite used for key exchange, payload encryption, message authentication and pseudo random calculation, the TLS signature algorithm extension <url @@ -668,184 +846,226 @@ fun(srp, Username :: string(), UserState :: term()) -> Selected signature algorithm can restrict which hash functions that may be selected. Default support for {md5, rsa} removed in ssl-8.0 </p> - </item> - </taglist> - </section> - - <section> - <title>SSL OPTION DESCRIPTIONS - SERVER SIDE</title> + </desc> + </datatype> + - <p>The following options are server-specific or have a slightly different - meaning in the server than in the client:</p> + <datatype_title>TLS/DTLS OPTION DESCRIPTIONS - SERVER </datatype_title> - <taglist> - <tag><c>{cacerts, [public_key:der_encoded()]}</c></tag> - <item><p>The DER-encoded trusted certificates. If this option - is supplied it overrides option <c>cacertfile</c>.</p></item> + <datatype> + <name name="server_option"/> + </datatype> + + <datatype> + <name name="server_cacerts"/> + <desc><p>The DER-encoded trusted certificates. If this option + is supplied it overrides option <c>cacertfile</c>.</p> + </desc> + </datatype> - <tag><c>{cacertfile, path()}</c></tag> - <item><p>Path to a file containing PEM-encoded CA - certificates. The CA certificates are used to build the server - certificate chain and for client authentication. The CAs are - also used in the list of acceptable client CAs passed to the - client when a certificate is requested. Can be omitted if there - is no need to verify the client and if there are no - intermediate CAs for the server certificate.</p></item> - - <tag><c>{dh, public_key:der_encoded()}</c></tag> - <item><p>The DER-encoded Diffie-Hellman parameters. If specified, - it overrides option <c>dhfile</c>.</p></item> - - <tag><c>{dhfile, path()}</c></tag> - <item><p>Path to a file containing PEM-encoded Diffie Hellman parameters - to be used by the server if a cipher suite using Diffie Hellman key - exchange is negotiated. If not specified, default parameters are used. - </p></item> - - <tag><c>{verify, verify_type()}</c></tag> - <item><p>A server only does x509-path validation in mode <c>verify_peer</c>, - as it then sends a certificate request to the client - (this message is not sent if the verify option is <c>verify_none</c>). - You can then also want to specify option <c>fail_if_no_peer_cert</c>. - </p></item> - - <tag><c>{fail_if_no_peer_cert, boolean()}</c></tag> - <item><p>Used together with <c>{verify, verify_peer}</c> by an SSL server. - If set to <c>true</c>, the server fails if the client does not have - a certificate to send, that is, sends an empty certificate. If set to - <c>false</c>, it fails only if the client sends an invalid - certificate (an empty certificate is considered valid). Defaults to false.</p> - </item> - - <tag><c>{reuse_sessions, boolean()}</c></tag> - <item><p>Specifies if the server is to agree to reuse sessions - when requested by the clients. See also option <c>reuse_session</c>. - </p></item> - - <tag><c>{reuse_session, fun(SuggestedSessionId, - PeerCert, Compression, CipherSuite) -> boolean()}</c></tag> - <item><p>Enables the SSL server to have a local policy - for deciding if a session is to be reused or not. - Meaningful only if <c>reuse_sessions</c> is set to <c>true</c>. - <c>SuggestedSessionId</c> is a <c>binary()</c>, <c>PeerCert</c> is - a DER-encoded certificate, <c>Compression</c> is an enumeration integer, - and <c>CipherSuite</c> is of type <c>ciphersuite()</c>.</p></item> - - <tag><c>{alpn_preferred_protocols, [binary()]}</c></tag> - <item> - <p>Indicates the server will try to perform Application-Layer - Protocol Negotiation (ALPN).</p> - - <p>The list of protocols is in order of preference. The protocol - negotiated will be the first in the list that matches one of the - protocols advertised by the client. If no protocol matches, the - server will fail the connection with a "no_application_protocol" alert.</p> - - <p>The negotiated protocol can be retrieved using the <c>negotiated_protocol/1</c> function.</p> - </item> - - <tag><c>{next_protocols_advertised, Protocols :: [binary()]}</c></tag> - <item><p>List of protocols to send to the client if the client indicates that - it supports the Next Protocol extension. The client can select a protocol - that is not on this list. The list of protocols must not contain an empty - binary. If the server negotiates a Next Protocol, it can be accessed - using the <c>negotiated_next_protocol/1</c> method.</p></item> - - <tag><c>{psk_identity, string()}</c></tag> - <item><p>Specifies the server identity hint, which the server presents to - the client.</p></item> - - <tag><c>{log_alert, boolean()}</c></tag> - <item><p>If set to <c>false</c>, error reports are not displayed.</p></item> - - <tag><c>{honor_cipher_order, boolean()}</c></tag> - <item><p>If set to <c>true</c>, use the server preference for cipher - selection. If set to <c>false</c> (the default), use the client - preference.</p></item> - - <tag><c>{sni_hosts, [{hostname(), [ssl_option()]}]}</c></tag> - <item><p>If the server receives a SNI (Server Name Indication) from the client - matching a host listed in the <c>sni_hosts</c> option, the specific options for - that host will override previously specified options. - - The option <c>sni_fun</c>, and <c>sni_hosts</c> are mutually exclusive.</p></item> - - <tag><c>{sni_fun, SNIfun::fun()}</c></tag> - <item><p>If the server receives a SNI (Server Name Indication) from the client, - the given function will be called to retrieve <c>[ssl_option()]</c> for the indicated server. - These options will be merged into predefined <c>[ssl_option()]</c>. - - The function should be defined as: - <c>fun(ServerName :: string()) -> [ssl_option()]</c> - and can be specified as a fun or as named <c>fun module:function/1</c> - - The option <c>sni_fun</c>, and <c>sni_hosts</c> are mutually exclusive.</p></item> - - <tag><c>{client_renegotiation, boolean()}</c></tag> - <item>In protocols that support client-initiated renegotiation, the cost - of resources of such an operation is higher for the server than the - client. This can act as a vector for denial of service attacks. The SSL - application already takes measures to counter-act such attempts, - but client-initiated renegotiation can be strictly disabled by setting - this option to <c>false</c>. The default value is <c>true</c>. - Note that disabling renegotiation can result in long-lived connections - becoming unusable due to limits on the number of messages the underlying - cipher suite can encipher. - </item> - - <tag><c>{honor_cipher_order, boolean()}</c></tag> - <item>If true, use the server's preference for cipher selection. If false - (the default), use the client's preference. - </item> - <tag><c>{honor_ecc_order, boolean()}</c></tag> - <item>If true, use the server's preference for ECC curve selection. If false - (the default), use the client's preference. - </item> - - <tag><c>{signature_algs, [{hash(), ecdsa | rsa | dsa}]}</c></tag> - <item><p> The algorithms specified by - this option will be the ones accepted by the server in a signature algorithm - negotiation, introduced in TLS-1.2. The algorithms will also be offered to the client if a - client certificate is requested. For more details see the <seealso marker="#client_signature_algs">corresponding client option</seealso>. - </p> </item> - - <tag><c>{v2_hello_compatible, boolean()}</c></tag> - <item>If true, the server accepts clients that send hello messages on SSL-2.0 format but offers - supported SSL/TLS versions. Defaults to false, that is the server will not interoperate with clients that - offers SSL-2.0. - </item> - - </taglist> - </section> - - <section> - <title>General</title> + <datatype> + <name name="server_cafile"/> + <desc><p>Path to a file containing PEM-encoded CA + certificates. The CA certificates are used to build the server + certificate chain and for client authentication. The CAs are + also used in the list of acceptable client CAs passed to the + client when a certificate is requested. Can be omitted if + there is no need to verify the client and if there are no + intermediate CAs for the server certificate.</p> + </desc> + </datatype> + + <datatype> + <name name="dh_der"/> + <desc><p>The DER-encoded Diffie-Hellman parameters. If + specified, it overrides option <c>dhfile</c>.</p> + </desc> + </datatype> + + <datatype> + <name name="dh_file"/> + <desc><p>Path to a file containing PEM-encoded Diffie Hellman + parameters to be used by the server if a cipher suite using + Diffie Hellman key exchange is negotiated. If not specified, + default parameters are used.</p> + </desc> + </datatype> - <p>When an SSL socket is in active mode (the default), data from the - socket is delivered to the owner of the socket in the form of - messages:</p> - <list type="bulleted"> - <item><p><c>{ssl, Socket, Data}</c></p></item> - <item><p><c>{ssl_closed, Socket}</c></p></item> - <item><p><c>{ssl_error, Socket, Reason}</c></p></item> - </list> + <datatype> + <name name="server_verify_type"/> + <desc><p>A server only does x509-path validation in mode + <c>verify_peer</c>, as it then sends a certificate request to + the client (this message is not sent if the verify option is + <c>verify_none</c>). You can then also want to specify option + <c>fail_if_no_peer_cert</c>. </p> + </desc> + </datatype> + + <datatype> + <name name="fail_if_no_peer_cert"/> + <desc><p>Used together with <c>{verify, verify_peer}</c> by an + TLS/DTLS server. If set to <c>true</c>, the server fails if + the client does not have a certificate to send, that is, sends + an empty certificate. If set to <c>false</c>, it fails only if + the client sends an invalid certificate (an empty certificate + is considered valid). Defaults to false.</p> + </desc> + </datatype> + + <datatype> + <name name="server_reuse_sessions"/> + <desc><p>The boolean value true specifies that the server will + agree to reuse sessions. Setting it to false will result in an empty + session table, that is no sessions will be reused. + See also option <seealso marker="#type-server_reuse_session">reuse_session</seealso> + </p> + </desc> + </datatype> + + <datatype> + <name name="server_reuse_session"/> + <desc><p>Enables the TLS/DTLS server to have a local policy + for deciding if a session is to be reused or not. Meaningful + only if <c>reuse_sessions</c> is set to <c>true</c>. + <c>SuggestedSessionId</c> is a <c>binary()</c>, + <c>PeerCert</c> is a DER-encoded certificate, + <c>Compression</c> is an enumeration integer, and + <c>CipherSuite</c> is of type <c>ciphersuite()</c>.</p> + </desc> + </datatype> + + <datatype> + <name name="server_alpn"/> + <desc> + <p>Indicates the server will try to perform + Application-Layer Protocol Negotiation (ALPN).</p> + + <p>The list of protocols is in order of preference. The + protocol negotiated will be the first in the list that + matches one of the protocols advertised by the client. If no + protocol matches, the server will fail the connection with a + "no_application_protocol" alert.</p> + + <p>The negotiated protocol can be retrieved using the + <c>negotiated_protocol/1</c> function.</p> + </desc> + </datatype> + + <datatype> + <name name="server_next_protocol"/> + <desc><p>List of protocols to send to the client if the client + indicates that it supports the Next Protocol extension. The + client can select a protocol that is not on this list. The + list of protocols must not contain an empty binary. If the + server negotiates a Next Protocol, it can be accessed using + the <c>negotiated_next_protocol/1</c> method.</p> + </desc> + </datatype> + + <datatype> + <name name="server_psk_identity"/> + <desc> + <p>Specifies the server identity hint, which the server presents to + the client.</p> + </desc> + </datatype> + + <datatype> + <name name="honor_cipher_order"/> + <desc> + <p>If set to <c>true</c>, use the server preference for cipher + selection. If set to <c>false</c> (the default), use the client + preference.</p> + </desc> + </datatype> + + <datatype> + <name name="sni_hosts"/> + <desc><p>If the server receives a SNI (Server Name Indication) from the client + matching a host listed in the <c>sni_hosts</c> option, the specific options for + that host will override previously specified options. + + The option <c>sni_fun</c>, and <c>sni_hosts</c> are mutually exclusive.</p> + </desc> + </datatype> + + <datatype> + <name name="sni_fun"/> + <desc> + <p>If the server receives a SNI (Server Name Indication) + from the client, the given function will be called to + retrieve <seealso marker="#type-server_option">[server_option()] </seealso> for the indicated server. + These options will be merged into predefined + <seealso marker="#type-server_option">[server_option()] </seealso> list. + + The function should be defined as: + fun(ServerName :: string()) -> <seealso marker="#type-server_option">[server_option()] </seealso> + and can be specified as a fun or as named <c>fun module:function/1</c> + + The option <c>sni_fun</c>, and <c>sni_hosts</c> are mutually exclusive.</p> + </desc> + </datatype> + + <datatype> + <name name="client_renegotiation"/> + <desc><p>In protocols that support client-initiated + renegotiation, the cost of resources of such an operation is + higher for the server than the client. This can act as a + vector for denial of service attacks. The SSL application + already takes measures to counter-act such attempts, but + client-initiated renegotiation can be strictly disabled by + setting this option to <c>false</c>. The default value is + <c>true</c>. Note that disabling renegotiation can result in + long-lived connections becoming unusable due to limits on the + number of messages the underlying cipher suite can + encipher.</p> + </desc> + </datatype> + + <datatype> + <name name="honor_cipher_order"/> + <desc><p>If true, use the server's preference for cipher + selection. If false (the default), use the client's + preference.</p> + </desc> + </datatype> + + <datatype> + <name name="honor_ecc_order"/> + <desc><p>If true, use the server's preference for ECC curve + selection. If false (the default), use the client's + preference.</p> + </desc> + </datatype> + + <datatype> + <name name="server_signature_algs"/> + <desc><p> The algorithms specified by this option will be the + ones accepted by the server in a signature algorithm + negotiation, introduced in TLS-1.2. The algorithms will also + be offered to the client if a client certificate is + requested. For more details see the <seealso + marker="#type-client_signature_algs">corresponding client + option</seealso>. + </p> + </desc> + </datatype> + </datatypes> + +<!-- + ================================================================ + = Function definitions = + ================================================================ +--> - <p>A <c>Timeout</c> argument specifies a time-out in milliseconds. The - default value for argument <c>Timeout</c> is <c>infinity</c>.</p> - </section> - <funcs> <func> - <name>append_cipher_suites(Deferred, Suites) -> ciphers() </name> + <name name="append_cipher_suites" arity="2" since="OTP 20.3"/> <fsummary></fsummary> - <type> - <v>Deferred = ciphers() | cipher_filters() </v> - <v>Suites = ciphers() </v> - </type> <desc><p>Make <c>Deferred</c> suites become the least preferred suites, that is put them at the end of the cipher suite list <c>Suites</c> after removing them from <c>Suites</c> if @@ -856,54 +1076,37 @@ fun(srp, Username :: string(), UserState :: term()) -> </func> <func> - <name>cipher_suites() -></name> - <name>cipher_suites(Type) -> old_ciphers()</name> + <name name="cipher_suites" arity="0" since="OTP R14B"/> + <name name="cipher_suites" arity="1" since="OTP R14B"/> <fsummary>Returns a list of supported cipher suites.</fsummary> - <type> - <v>Type = erlang | openssl | all</v> - </type> <desc> - <p>Returns a list of supported cipher suites. - This function will become deprecated in OTP 21, and replaced - by <seealso marker="#cipher_suites-2">ssl:cipher-suites/2</seealso> - <c>cipher_suites()</c> is equivalent to <c>cipher_suites(erlang).</c> - Type <c>openssl</c> is provided for backwards compatibility with the - old SSL, which used OpenSSL. <c>cipher_suites(all)</c> returns - all available cipher suites. The cipher suites not present - in <c>cipher_suites(erlang)</c> but included in - <c>cipher_suites(all)</c> are not used unless explicitly configured - by the user.</p> + <p>Deprecated in OTP 21, use <seealso marker="#cipher_suites-2">cipher_suites/2</seealso> instead.</p> </desc> </func> <func> - <name>cipher_suites(Supported, Version) -> ciphers()</name> + <name name="cipher_suites" arity="2" since="OTP 20.3"/> <fsummary>Returns a list of all default or all supported cipher suites.</fsummary> - <type> - <v> Supported = default | all | anonymous </v> - <v> Version = protocol_version() </v> - </type> - <desc><p>Returns all default or all supported (except anonymous), or all anonymous cipher suites for a + <desc><p>Returns all default or all supported (except anonymous), + or all anonymous cipher suites for a TLS version</p> </desc> </func> <func> - <name>eccs() -></name> - <name>eccs(protocol_version()) -> [named_curve()]</name> + <name name="eccs" arity="0" since="OTP 19.2"/> + <name name="eccs" arity="1" since="OTP 19.2"/> <fsummary>Returns a list of supported ECCs.</fsummary> - <desc><p>Returns a list of supported ECCs. <c>eccs()</c> is equivalent to calling <c>eccs(Protocol)</c> with all supported protocols and then deduplicating the output.</p> </desc> </func> - + <func> - <name>clear_pem_cache() -> ok </name> + <name name="clear_pem_cache" arity="0" since="OTP 17.5"/> <fsummary> Clears the pem cache</fsummary> - <desc><p>PEM files, used by ssl API-functions, are cached. The cache is regularly checked to see if any cache entries should be invalidated, however this function provides a way to @@ -913,50 +1116,51 @@ fun(srp, Username :: string(), UserState :: term()) -> </func> <func> - <name>connect(Socket, SslOptions) -> </name> - <name>connect(Socket, SslOptions, Timeout) -> {ok, SslSocket} - | {error, Reason}</name> + <name name="connect" arity="2" since="OTP R14B"/> + <name name="connect" arity="3" clause_i="1" since=""/> <fsummary>Upgrades a <c>gen_tcp</c>, or - equivalent, connected socket to an SSL socket.</fsummary> - <type> - <v>Socket = socket()</v> - <v>SslOptions = [ssl_option()]</v> - <v>Timeout = integer() | infinity</v> - <v>SslSocket = sslsocket()</v> - <v>Reason = term()</v> - </type> + equivalent, connected socket to an TLS socket.</fsummary> <desc><p>Upgrades a <c>gen_tcp</c>, or equivalent, - connected socket to an SSL socket, that is, performs the - client-side ssl handshake.</p> + connected socket to an TLS socket, that is, performs the + client-side TLS handshake.</p> - <note><p>If the option <c>verify</c> is set to <c>verify_peer</c> - the option <c>server_name_indication</c> shall also be specified, - if it is not no Server Name Indication extension will be sent, - and <seealso marker="public_key:public_key#pkix_verify_hostname-2">public_key:pkix_verify_hostname/2</seealso> - will be called with the IP-address of the connection as <c>ReferenceID</c>, which is proably not what you want.</p></note> + <note><p>If the option <c>verify</c> is set to + <c>verify_peer</c> the option <c>server_name_indication</c> + shall also be specified, if it is not no Server Name + Indication extension will be sent, and <seealso + marker="public_key:public_key#pkix_verify_hostname-2">public_key:pkix_verify_hostname/2</seealso> + will be called with the IP-address of the connection as + <c>ReferenceID</c>, which is proably not what you want.</p> + </note> + + <p> If the option <c>{handshake, hello}</c> is used the + handshake is paused after receiving the server hello message + and the success response is <c>{ok, SslSocket, Ext}</c> + instead of <c>{ok, SslSocket}</c>. Thereafter the handshake + is continued or canceled by calling <seealso + marker="#handshake_continue-3"> + <c>handshake_continue/3</c></seealso> or <seealso + marker="#handshake_cancel-1"><c>handshake_cancel/1</c></seealso>. + </p> + + <p> If the option <c>active</c> is set to <c>once</c>, <c>true</c> or an integer value, + the process owning the sslsocket will receive messages of type + <seealso marker="#type-active_msgs"> active_msgs() </seealso> + </p> </desc> </func> <func> - <name>connect(Host, Port, Options) -></name> - <name>connect(Host, Port, Options, Timeout) -> - {ok, SslSocket} | {error, Reason}</name> - <fsummary>Opens an SSL connection to <c>Host</c>, <c>Port</c>.</fsummary> - <type> - <v>Host = host()</v> - <v>Port = integer()</v> - <v>Options = [option()]</v> - <v>Timeout = integer() | infinity</v> - <v>SslSocket = sslsocket()</v> - <v>Reason = term()</v> - </type> - <desc><p>Opens an SSL connection to <c>Host</c>, <c>Port</c>.</p> + <name since="" name="connect" arity="3" clause_i="2"/> + <name since="" name="connect" arity="4"/> + <fsummary>Opens an TLS/DTLS connection to <c>Host</c>, <c>Port</c>.</fsummary> + <desc><p>Opens an TLS/DTLS connection to <c>Host</c>, <c>Port</c>.</p> <p> When the option <c>verify</c> is set to <c>verify_peer</c> the check <seealso marker="public_key:public_key#pkix_verify_hostname-2">public_key:pkix_verify_hostname/2</seealso> will be performed in addition to the usual x509-path validation checks. If the check fails the error {bad_cert, hostname_check_failed} will - be propagated to the path validation fun <seealso marker="#verify_fun">verify_fun</seealso>, where it is possible to do customized - checks by using the full possibilitis of the <seealso marker="public_key:public_key#pkix_verify_hostname-2">public_key:pkix_verify_hostname/2</seealso> API. + be propagated to the path validation fun <seealso marker="#type-custom_verify">verify_fun</seealso>, where it is possible to do customized + checks by using the full possibilities of the <seealso marker="public_key:public_key#pkix_verify_hostname-3">public_key:pkix_verify_hostname/3</seealso> API. When the option <c>server_name_indication</c> is provided, its value (the DNS name) will be used as <c>ReferenceID</c> to <seealso marker="public_key:public_key#pkix_verify_hostname-2">public_key:pkix_verify_hostname/2</seealso>. @@ -967,29 +1171,35 @@ fun(srp, Username :: string(), UserState :: term()) -> <c>dns_id</c> will be assumed with a fallback to <c>ip</c> if that fails. </p> <note><p>According to good practices certificates should not use IP-addresses as "server names". It would be very surprising if this happen outside a closed network. </p></note> + + + <p> If the option <c>{handshake, hello}</c> is used the + handshake is paused after receiving the server hello message + and the success response is <c>{ok, SslSocket, Ext}</c> + instead of <c>{ok, SslSocket}</c>. Thereafter the handshake is continued or + canceled by calling <seealso marker="#handshake_continue-3"> + <c>handshake_continue/3</c></seealso> or <seealso + marker="#handshake_cancel-1"><c>handshake_cancel/1</c></seealso>. + </p> + + <p> If the option <c>active</c> is set to <c>once</c>, <c>true</c> or an integer value, + the process owning the sslsocket will receive messages of type + <seealso marker="#type-active_msgs"> active_msgs() </seealso> + </p> </desc> </func> <func> - <name>close(SslSocket) -> ok | {error, Reason}</name> - <fsummary>Closes an SSL connection.</fsummary> - <type> - <v>SslSocket = sslsocket()</v> - <v>Reason = term()</v> - </type> - <desc><p>Closes an SSL connection.</p> + <name since="" name="close" arity="1" /> + <fsummary>Closes an TLS/DTLS connection.</fsummary> + <desc><p>Closes an TLS/DTLS connection.</p> </desc> </func> <func> - <name>close(SslSocket, How) -> ok | {ok, port()} | {error, Reason}</name> - <fsummary>Closes an SSL connection.</fsummary> - <type> - <v>SslSocket = sslsocket()</v> - <v>How = timeout() | {NewController::pid(), timeout()} </v> - <v>Reason = term()</v> - </type> - <desc><p>Closes or downgrades an SSL connection. In the latter case the transport + <name since="OTP 18.1" name="close" arity="2"/> + <fsummary>Closes an TLS connection.</fsummary> + <desc><p>Closes or downgrades an TLS connection. In the latter case the transport connection will be handed over to the <c>NewController</c> process after receiving the TLS close alert from the peer. The returned transport socket will have the following options set: <c>[{active, false}, {packet, 0}, {mode, binary}]</c></p> @@ -997,15 +1207,9 @@ fun(srp, Username :: string(), UserState :: term()) -> </func> <func> - <name>controlling_process(SslSocket, NewOwner) -> - ok | {error, Reason}</name> + <name since="" name="controlling_process" arity="2" /> <fsummary>Assigns a new controlling process to the - SSL socket.</fsummary> - <type> - <v>SslSocket = sslsocket()</v> - <v>NewOwner = pid()</v> - <v>Reason = term()</v> - </type> + TLS/DTLS socket.</fsummary> <desc><p>Assigns a new controlling process to the SSL socket. A controlling process is the owner of an SSL socket, and receives all messages from the socket.</p> @@ -1013,50 +1217,36 @@ fun(srp, Username :: string(), UserState :: term()) -> </func> <func> - <name>connection_information(SslSocket) -> - {ok, Result} | {error, Reason} </name> + <name since="OTP 18.0" name="connection_information" arity="1"/> <fsummary>Returns all the connection information. </fsummary> - <type> - <v>Item = protocol | cipher_suite | sni_hostname | ecc | session_id | atom()</v> - <d>Meaningful atoms, not specified above, are the ssl option names.</d> - <v>Result = [{Item::atom(), Value::term()}]</v> - <v>Reason = term()</v> - </type> <desc><p>Returns the most relevant information about the connection, ssl options that are undefined will be filtered out. Note that values that affect the security of the connection will only be returned if explicitly requested by connection_information/2.</p> + <note><p>The legacy <c>Item = cipher_suite</c> is still supported + and returns the cipher suite on its (undocumented) legacy format. + It should be replaced by <c>selected_cipher_suite</c>.</p></note> </desc> </func> <func> - <name>connection_information(SslSocket, Items) -> - {ok, Result} | {error, Reason} </name> + <name since="OTP 18.0" name="connection_information" arity="2"/> <fsummary>Returns the requested connection information. </fsummary> - <type> - <v>Items = [Item]</v> - <v>Item = protocol | cipher_suite | sni_hostname | ecc | session_id | client_random - | server_random | master_secret | atom()</v> - <d>Note that client_random, server_random and master_secret are values - that affect the security of connection. Meaningful atoms, not specified above, are the ssl option names.</d> - <v>Result = [{Item::atom(), Value::term()}]</v> - <v>Reason = term()</v> - </type> <desc><p>Returns the requested information items about the connection, if they are defined.</p> + <p>Note that client_random, server_random and master_secret are values + that affect the security of connection. Meaningful atoms, not specified + above, are the ssl option names.</p> + <note><p>If only undefined options are requested the resulting list can be empty.</p></note> </desc> </func> <func> - <name>filter_cipher_suites(Suites, Filters) -> ciphers()</name> + <name since="OTP 20.3" name="filter_cipher_suites" arity="2" /> <fsummary></fsummary> - <type> - <v> Suites = ciphers()</v> - <v> Filters = cipher_filters()</v> - </type> <desc><p>Removes cipher suites if any of the filter functions returns false for any part of the cipher suite. This function also calls default filter functions to make sure the cipher @@ -1066,24 +1256,16 @@ fun(srp, Username :: string(), UserState :: term()) -> </func> <func> - <name>format_error(Reason) -> string()</name> + <name since="" name="format_error" arity="1" /> <fsummary>Returns an error string.</fsummary> - <type> - <v>Reason = term()</v> - </type> <desc> <p>Presents the error returned by an SSL function as a printable string.</p> </desc> </func> <func> - <name>getopts(Socket, OptionNames) -> - {ok, [socketoption()]} | {error, Reason}</name> + <name since="" name="getopts" arity="2" /> <fsummary>Gets the values of the specified options.</fsummary> - <type> - <v>Socket = sslsocket()</v> - <v>OptionNames = [atom()]</v> - </type> <desc> <p>Gets the values of the specified socket options. </p> @@ -1091,16 +1273,9 @@ fun(srp, Username :: string(), UserState :: term()) -> </func> <func> - <name>getstat(Socket) -> - {ok, OptionValues} | {error, inet:posix()}</name> - <name>getstat(Socket, OptionNames) -> - {ok, OptionValues} | {error, inet:posix()}</name> + <name since="OTP 19.0" name="getstat" arity="1" /> + <name since="OTP 19.0" name="getstat" arity="2" /> <fsummary>Get one or more statistic options for a socket</fsummary> - <type> - <v>Socket = sslsocket()</v> - <v>OptionNames = [atom()]</v> - <v>OptionValues = [{inet:stat_option(), integer()}]</v> - </type> <desc> <p>Gets one or more statistic options for the underlying TCP socket.</p> <p>See inet:getstat/2 for statistic options description.</p> @@ -1108,26 +1283,86 @@ fun(srp, Username :: string(), UserState :: term()) -> </func> <func> - <name>listen(Port, Options) -> - {ok, ListenSocket} | {error, Reason}</name> + <name since="OTP 21.0" name="handshake" arity="1" /> + <name since="OTP 21.0" name="handshake" arity="2" clause_i="1" /> + <fsummary>Performs server-side SSL/TLS handshake.</fsummary> + <desc> + <p>Performs the SSL/TLS/DTLS server-side handshake.</p> + <p>Returns a new TLS/DTLS socket if the handshake is successful.</p> + + <p> If the option <c>active</c> is set to <c>once</c>, <c>true</c> or an integer value, + the process owning the sslsocket will receive messages of type + <seealso marker="#type-active_msgs"> active_msgs() </seealso> + </p> + </desc> + </func> + + <func> + <name since="OTP 21.0" name="handshake" arity="2" clause_i="2" /> + <name since="OTP 21.0" name="handshake" arity="3" /> + <fsummary>Performs server-side SSL/TLS/DTLS handshake.</fsummary> + <desc> + <p>If <c>Socket</c> is a ordinary <c>socket()</c>: upgrades a <c>gen_tcp</c>, + or equivalent, socket to an SSL socket, that is, performs + the SSL/TLS server-side handshake and returns a TLS socket.</p> + + <warning><p>The <c>Socket</c> shall be in passive mode ({active, + false}) before calling this function or else the behavior of this function + is undefined. + </p></warning> + + <p>If <c>Socket</c> is an + <seealso marker="#type-sslsocket"> sslsocket() </seealso>: provides extra SSL/TLS/DTLS + options to those specified in + <seealso marker="#listen-2">listen/2 </seealso> and then performs + the SSL/TLS/DTLS handshake. Returns a new TLS/DTLS socket if the handshake is successful.</p> + + <p> + If option <c>{handshake, hello}</c> is specified the handshake is + paused after receiving the client hello message and the + success response is <c>{ok, SslSocket, Ext}</c> instead of <c>{ok, + SslSocket}</c>. Thereafter the handshake is continued or + canceled by calling <seealso marker="#handshake_continue-3"> + <c>handshake_continue/3</c></seealso> or <seealso + marker="#handshake_cancel-1"><c>handshake_cancel/1</c></seealso>. + </p> + + <p> If the option <c>active</c> is set to <c>once</c>, <c>true</c> or an integer value, + the process owning the sslsocket will receive messages of type + <seealso marker="#type-active_msgs"> active_msgs() </seealso> + </p> + + </desc> + </func> + + <func> + <name since="OTP 21.0" name="handshake_cancel" arity="1" /> + <fsummary>Cancel handshake with a fatal alert</fsummary> + <desc> + <p>Cancel the handshake with a fatal <c>USER_CANCELED</c> alert.</p> + </desc> + </func> + + <func> + <name since="OTP 21.0" name="handshake_continue" arity="2" /> + <name since="OTP 21.0" name="handshake_continue" arity="3" /> + <fsummary>Continue the SSL/TLS handshake.</fsummary> + <desc> + <p>Continue the SSL/TLS handshake possiby with new, additional or changed options.</p> + </desc> + </func> + + <func> + <name since="" name="listen" arity="2" /> <fsummary>Creates an SSL listen socket.</fsummary> - <type> - <v>Port = integer()</v> - <v>Options = options()</v> - <v>ListenSocket = sslsocket()</v> - </type> <desc> <p>Creates an SSL listen socket.</p> </desc> </func> <func> - <name>negotiated_protocol(Socket) -> {ok, Protocol} | {error, protocol_not_negotiated}</name> + <name since="OTP 18.0" name="negotiated_protocol" arity="1" /> <fsummary>Returns the protocol negotiated through ALPN or NPN extensions.</fsummary> - <type> - <v>Socket = sslsocket()</v> - <v>Protocol = binary()</v> - </type> <desc> <p> Returns the protocol negotiated through ALPN or NPN extensions. @@ -1136,40 +1371,27 @@ fun(srp, Username :: string(), UserState :: term()) -> </func> <func> - <name>peercert(Socket) -> {ok, Cert} | {error, Reason}</name> + <name since="" name="peercert" arity="1" /> <fsummary>Returns the peer certificate.</fsummary> - <type> - <v>Socket = sslsocket()</v> - <v>Cert = binary()</v> - </type> <desc> <p>The peer certificate is returned as a DER-encoded binary. The certificate can be decoded with - <c>public_key:pkix_decode_cert/2</c>.</p> + <seealso marker="public_key:public_key#pkix_decode_cert-2">public_key:pkix_decode_cert/2</seealso> + </p> </desc> </func> <func> - <name>peername(Socket) -> {ok, {Address, Port}} | - {error, Reason}</name> + <name since="" name="peername" arity="1" /> <fsummary>Returns the peer address and port.</fsummary> - <type> - <v>Socket = sslsocket()</v> - <v>Address = ipaddress()</v> - <v>Port = integer()</v> - </type> <desc> <p>Returns the address and port number of the peer.</p> </desc> </func> <func> - <name>prepend_cipher_suites(Preferred, Suites) -> ciphers()</name> + <name since="OTP 20.3" name="prepend_cipher_suites" arity="2" /> <fsummary></fsummary> - <type> - <v>Preferred = ciphers() | cipher_filters() </v> - <v>Suites = ciphers() </v> - </type> <desc><p>Make <c>Preferred</c> suites become the most preferred suites that is put them at the head of the cipher suite list <c>Suites</c> after removing them from <c>Suites</c> if @@ -1180,36 +1402,27 @@ fun(srp, Username :: string(), UserState :: term()) -> </func> <func> - <name>prf(Socket, Secret, Label, Seed, WantedLength) -> {ok, binary()} | {error, reason()}</name> + <name since="OTP R15B01" name="prf" arity="5" /> <fsummary>Uses a session Pseudo-Random Function to generate key material.</fsummary> - <type> - <v>Socket = sslsocket()</v> - <v>Secret = binary() | master_secret</v> - <v>Label = binary()</v> - <v>Seed = [binary() | prf_random()]</v> - <v>WantedLength = non_neg_integer()</v> - </type> <desc> <p>Uses the Pseudo-Random Function (PRF) of a TLS session to generate extra key material. It either takes user-generated values for <c>Secret</c> and <c>Seed</c> or atoms directing it to use a specific value from the session security parameters.</p> - <p>Can only be used with TLS connections; <c>{error, undefined}</c> + <p>Can only be used with TLS/DTLS connections; <c>{error, undefined}</c> is returned for SSLv3 connections.</p> </desc> </func> <func> - <name>recv(Socket, Length) -> </name> - <name>recv(Socket, Length, Timeout) -> {ok, Data} | {error, - Reason}</name> + <name since="" name="recv" arity="2" /> + <name since="" name="recv" arity="3" /> <fsummary>Receives data on a socket.</fsummary> - <type> - <v>Socket = sslsocket()</v> - <v>Length = integer()</v> - <v>Timeout = integer()</v> - <v>Data = [char()] | binary()</v> - </type> + <type_desc variable="HttpPacket">See the description of + <c>HttpPacket</c> in + <seealso marker="erts:erlang#decode_packet/3"><c>erlang:decode_packet/3</c></seealso> + in ERTS. + </type_desc> <desc> <p>Receives a packet from a socket in passive mode. A closed socket is indicated by return value @@ -1227,11 +1440,8 @@ fun(srp, Username :: string(), UserState :: term()) -> </func> <func> - <name>renegotiate(Socket) -> ok | {error, Reason}</name> + <name since="OTP R14B" name="renegotiate" arity="1" /> <fsummary>Initiates a new handshake.</fsummary> - <type> - <v>Socket = sslsocket()</v> - </type> <desc><p>Initiates a new handshake. A notable return value is <c>{error, renegotiation_rejected}</c> indicating that the peer refused to go through with the renegotiation, but the connection @@ -1240,40 +1450,27 @@ fun(srp, Username :: string(), UserState :: term()) -> </func> <func> - <name>send(Socket, Data) -> ok | {error, Reason}</name> + <name since="" name="send" arity="2" /> <fsummary>Writes data to a socket.</fsummary> - <type> - <v>Socket = sslsocket()</v> - <v>Data = iodata()</v> - </type> <desc> - <p>Writes <c>Data</c> to <c>Socket</c>.</p> + <p>Writes <c>Data</c> to <c>SslSocket</c>.</p> <p>A notable return value is <c>{error, closed}</c> indicating that the socket is closed.</p> </desc> </func> <func> - <name>setopts(Socket, Options) -> ok | {error, Reason}</name> + <name since="" name="setopts" arity="2" /> <fsummary>Sets socket options.</fsummary> - <type> - <v>Socket = sslsocket()</v> - <v>Options = [socketoption]()</v> - </type> <desc> <p>Sets options according to <c>Options</c> for socket - <c>Socket</c>.</p> + <c>SslSocket</c>.</p> </desc> </func> <func> - <name>shutdown(Socket, How) -> ok | {error, Reason}</name> + <name since="OTP R14B" name="shutdown" arity="2" /> <fsummary>Immediately closes a socket.</fsummary> - <type> - <v>Socket = sslsocket()</v> - <v>How = read | write | read_write</v> - <v>Reason = reason()</v> - </type> <desc> <p>Immediately closes a socket in one or two directions.</p> <p><c>How == write</c> means closing the socket for writing, @@ -1285,72 +1482,37 @@ fun(srp, Username :: string(), UserState :: term()) -> </func> <func> - <name>ssl_accept(Socket) -> </name> - <name>ssl_accept(Socket, Timeout) -> ok | {error, Reason}</name> + <name since="" name="ssl_accept" arity="1" /> + <name since="" name="ssl_accept" arity="2" /> <fsummary>Performs server-side SSL/TLS handshake.</fsummary> - <type> - <v>Socket = sslsocket()</v> - <v>Timeout = integer()</v> - <v>Reason = term()</v> - </type> <desc> - <p>Performs the SSL/TLS server-side handshake.</p> - <p><c>Socket</c> is a socket as returned by - <seealso marker="#transport_accept-2">ssl:transport_accept/[1,2]</seealso> - </p> + <p>Deprecated in OTP 21, use <seealso marker="#handshake-1">handshake/[1,2]</seealso> instead.</p> + <note><p>handshake/[1,2] always returns a new socket.</p></note> </desc> </func> <func> - <name>ssl_accept(Socket, SslOptions) -> </name> - <name>ssl_accept(Socket, SslOptions, Timeout) -> {ok, Socket} | ok | {error, Reason}</name> - <fsummary>Performs server-side SSL/TLS handshake.</fsummary> - <type> - <v>Socket = socket() | sslsocket() </v> - <v>SslOptions = [ssl_option()]</v> - <v>Timeout = integer()</v> - <v>Reason = term()</v> - </type> + <name since="OTP R14B" name="ssl_accept" arity="3" /> + <fsummary>Performs server-side SSL/TLS/DTLS handshake.</fsummary> <desc> - <p>If <c>Socket</c> is a <c>socket()</c>: upgrades a <c>gen_tcp</c>, - or equivalent, socket to an SSL socket, that is, performs - the SSL/TLS server-side handshake and returns the SSL socket.</p> - - <warning><p>The listen socket is to be in mode <c>{active, false}</c> - before telling the client that the server is ready to upgrade - by calling this function, else the upgrade succeeds or does not - succeed depending on timing.</p></warning> - - <p>If <c>Socket</c> is an <c>sslsocket()</c>: provides extra SSL/TLS - options to those specified in - <seealso marker="#listen-2">ssl:listen/2 </seealso> and then performs - the SSL/TLS handshake. - </p> + <p>Deprecated in OTP 21, use <seealso marker="#handshake-3">handshake/[2,3]</seealso> instead.</p> + <note><p>handshake/[2,3] always returns a new socket.</p></note> </desc> </func> <func> - <name>sockname(Socket) -> {ok, {Address, Port}} | - {error, Reason}</name> + <name since="" name="sockname" arity="1" /> <fsummary>Returns the local address and port.</fsummary> - <type> - <v>Socket = sslsocket()</v> - <v>Address = ipaddress()</v> - <v>Port = integer()</v> - </type> <desc> <p>Returns the local address and port number of socket - <c>Socket</c>.</p> + <c>SslSocket</c>.</p> </desc> </func> <func> - <name>start() -> </name> - <name>start(Type) -> ok | {error, Reason}</name> + <name since="OTP R14B" name="start" arity="0" /> + <name since="OTP R14B">start(Type) -> ok | {error, Reason}</name> <fsummary>Starts the SSL application.</fsummary> - <type> - <v>Type = permanent | transient | temporary</v> - </type> <desc> <p>Starts the SSL application. Default type is <c>temporary</c>.</p> @@ -1358,7 +1520,7 @@ fun(srp, Username :: string(), UserState :: term()) -> </func> <func> - <name>stop() -> ok </name> + <name since="OTP R14B" name="stop" arity="0" /> <fsummary>Stops the SSL application.</fsummary> <desc> <p>Stops the SSL application.</p> @@ -1366,32 +1528,34 @@ fun(srp, Username :: string(), UserState :: term()) -> </func> <func> - <name>transport_accept(ListenSocket) -></name> - <name>transport_accept(ListenSocket, Timeout) -> - {ok, NewSocket} | {error, Reason}</name> + <name since="OTP 21.0" name="suite_to_str" arity="1" clause_i="1" /> + <fsummary>Returns the string representation of a cipher suite.</fsummary> + <desc> + <p>Returns the string representation of a cipher suite.</p> + </desc> + </func> + + <func> + <name since="" name="transport_accept" arity="1" /> + <name since="" name="transport_accept" arity="2" /> <fsummary>Accepts an incoming connection and prepares for <c>ssl_accept</c>.</fsummary> - <type> - <v>ListenSocket = NewSocket = sslsocket()</v> - <v>Timeout = integer()</v> - <v>Reason = reason()</v> - </type> <desc> <p>Accepts an incoming connection request on a listen socket. <c>ListenSocket</c> must be a socket returned from - <seealso marker="#listen-2"> ssl:listen/2</seealso>. + <seealso marker="#listen-2"> listen/2</seealso>. The socket returned is to be passed to - <seealso marker="#ssl_accept-2"> ssl:ssl_accept[2,3]</seealso> + <seealso marker="#handshake-2"> handshake/[2,3]</seealso> to complete handshaking, that is, - establishing the SSL/TLS connection.</p> + establishing the SSL/TLS/DTLS connection.</p> <warning> - <p>The socket returned can only be used with - <seealso marker="#ssl_accept-2"> ssl:ssl_accept[2,3]</seealso>. - No traffic can be sent or received before that call.</p> + <p>Most API functions require that the TLS/DTLS + connection is established to work as expected. + </p> </warning> <p>The accepted socket inherits the options set for <c>ListenSocket</c> in - <seealso marker="#listen-2"> ssl:listen/2</seealso>.</p> + <seealso marker="#listen-2"> listen/2</seealso>.</p> <p>The default value for <c>Timeout</c> is <c>infinity</c>. If <c>Timeout</c> is specified and no connection is accepted @@ -1401,12 +1565,9 @@ fun(srp, Username :: string(), UserState :: term()) -> </func> <func> - <name>versions() -> [versions_info()]</name> + <name since="OTP R14B" name="versions" arity="0" /> <fsummary>Returns version information relevant for the SSL application.</fsummary> - <type> - <v>versions_info() = {app_vsn, string()} | {supported | available, [protocol_version()] </v> - </type> <desc> <p>Returns version information relevant for the SSL application.</p> @@ -1415,19 +1576,35 @@ fun(srp, Username :: string(), UserState :: term()) -> <item>The application version of the SSL application.</item> <tag><c>supported</c></tag> - <item>TLS/SSL versions supported by default. + <item>SSL/TLS versions supported by default. Overridden by a version option on <seealso marker="#connect-2"> connect/[2,3,4]</seealso>, <seealso marker="#listen-2"> listen/2</seealso>, and <seealso marker="#ssl_accept-2">ssl_accept/[1,2,3]</seealso>. - For the negotiated TLS/SSL version, see <seealso - marker="#connection_information-1">ssl:connection_information/1 + For the negotiated SSL/TLS version, see <seealso + marker="#connection_information-1">connection_information/1 </seealso>.</item> - + + <tag><c>supported_dtls</c></tag> + <item>DTLS versions supported by default. + Overridden by a version option on + <seealso marker="#connect-2"> connect/[2,3,4]</seealso>, + <seealso marker="#listen-2"> listen/2</seealso>, and <seealso + marker="#ssl_accept-2">ssl_accept/[1,2,3]</seealso>. + For the negotiated DTLS version, see <seealso + marker="#connection_information-1">connection_information/1 + </seealso>.</item> + <tag><c>available</c></tag> - <item>All TLS/SSL versions supported by the SSL application. + <item>All SSL/TLS versions supported by the SSL application. TLS 1.2 requires sufficient support from the Crypto application.</item> + + <tag><c>available_dtls</c></tag> + <item>All DTLS versions supported by the SSL application. + DTLS 1.2 requires sufficient support from the Crypto + application.</item> + </taglist> </desc> </func> @@ -1438,6 +1615,7 @@ fun(srp, Username :: string(), UserState :: term()) -> <title>SEE ALSO</title> <p><seealso marker="kernel:inet">inet(3)</seealso> and <seealso marker="kernel:gen_tcp">gen_tcp(3)</seealso> + <seealso marker="kernel:gen_udp">gen_udp(3)</seealso> </p> </section> diff --git a/lib/ssl/doc/src/ssl_app.xml b/lib/ssl/doc/src/ssl_app.xml index f317dfded4..893919aeb4 100644 --- a/lib/ssl/doc/src/ssl_app.xml +++ b/lib/ssl/doc/src/ssl_app.xml @@ -4,7 +4,7 @@ <appref> <header> <copyright> - <year>1999</year><year>2016</year> + <year>1999</year><year>2018</year> <holder>Ericsson AB. All Rights Reserved.</holder> </copyright> <legalnotice> @@ -35,16 +35,21 @@ <description> <p> - The ssl application is an implementation of the SSL/TLS protocol in Erlang. + The ssl application is an implementation of the SSL/TLS/DTLS protocol in Erlang. </p> <list type="bulleted"> - <item>Supported SSL/TLS-versions are SSL-3.0, TLS-1.0, - TLS-1.1, and TLS-1.2.</item> - <item>For security reasons SSL-2.0 is not supported.</item> + <item>Supported SSL/TLS/DTLS-versions are SSL-3.0, TLS-1.0, + TLS-1.1, TLS-1.2, DTLS-1.0 (based on TLS-1.1), DTLS-1.2 (based on TLS-1.2)</item> + <item>For security reasons SSL-2.0 is not supported. + Interoperability with SSL-2.0 enabled clients dropped. (OTP 21) </item> <item>For security reasons SSL-3.0 is no longer supported by default, - but can be configured.</item> + but can be configured. (OTP 19) </item> + <item>For security reasons RSA key exchange cipher suites are no longer supported by default, + but can be configured. (OTP 21) </item> <item>For security reasons DES cipher suites are no longer supported by default, - but can be configured.</item> + but can be configured. (OTP 20) </item> + <item>For security reasons 3DES cipher suites are no longer supported by default, + but can be configured. (OTP 21) </item> <item> Renegotiation Indication Extension <url href="http://www.ietf.org/rfc/rfc5746.txt">RFC 5746</url> is supported </item> <item>Ephemeral Diffie-Hellman cipher suites are supported, @@ -72,7 +77,7 @@ <section> <title>DEPENDENCIES</title> - <p>The SSL application uses the <c>public_key</c> and + <p>The SSL application uses the <c>public_key</c>, <c>asn1</c> and Crypto application to handle public keys and encryption, hence these applications must be loaded for the SSL application to work. In an embedded environment this means they must be started with @@ -94,13 +99,20 @@ <p><c>erl -ssl protocol_version "['tlsv1.2', 'tlsv1.1']"</c></p> <taglist> - <tag><c>protocol_version = </c><seealso marker="ssl#type-protocol">ssl:protocol()</seealso><c><![CDATA[<optional>]]></c></tag> + <tag><c>protocol_version = </c><seealso marker="ssl#type-protocol">ssl:ssl_tls_protocol()</seealso><c><![CDATA[<optional>]]></c></tag> <item><p>Protocol supported by started clients and servers. If this option is not set, it defaults to all - protocols currently supported by the SSL application. + TLS protocols currently supported by the SSL application. This option can be overridden by the version option to <c>ssl:connect/[2,3]</c> and <c>ssl:listen/2</c>.</p></item> + <tag><c>dtls_protocol_version = </c><seealso marker="ssl#type-protocol">ssl:dtls_protocol()</seealso><c><![CDATA[<optional>]]></c></tag> + <item><p>Protocol supported by started clients and + servers. If this option is not set, it defaults to all + DTLS protocols currently supported by the SSL application. + This option can be overridden by the version option + to <c>ssl:connect/[2,3]</c> and <c>ssl:listen/2</c>.</p></item> + <tag><c><![CDATA[session_lifetime = integer() <optional>]]></c></tag> <item><p>Maximum lifetime of the session data in seconds. Defaults to 24 hours which is the maximum recommended lifetime by <url href="http://www.ietf.org/rfc/5246rfc.txt">RFC 5246</url>. However @@ -123,14 +135,14 @@ new client connections. If the maximum number of sessions is reached, the current cache entries will be invalidated regardless of their remaining lifetime. Defaults to - 1000.</p></item> + 1000. Recommended ssl-8.2.1 or later for this option to work as intended.</p></item> <tag> <c><![CDATA[session_cache_server_max = integer() <optional>]]></c></tag> <item><p>Limits the growth of the servers session cache, that is how many client sessions are cached by the server. If the maximum number of sessions is reached, the current cache entries will be invalidated regardless of their remaining - lifetime. Defaults to 1000.</p></item> + lifetime. Defaults to 1000. Recommended ssl-8.2.1 or later for this option to work as intended.</p></item> <tag><c><![CDATA[ssl_pem_cache_clean = integer() <optional>]]></c></tag> <item> @@ -145,9 +157,8 @@ <tag><c><![CDATA[bypass_pem_cache = boolean() <optional>]]></c></tag> <item> <p>Introduced in ssl-8.0.2. Disables the PEM-cache. - The PEM cache has proven to be a bottleneck, until the - implementation has been improved this can be used as - a workaround. Defaults to false. + Can be used as a workaround for the PEM-cache bottleneck + before ssl-8.1.1. Defaults to false. </p> </item> @@ -160,6 +171,20 @@ shutdown gracefully. Defaults to 5000 milliseconds. </p> </item> + + <tag><c><![CDATA[internal_active_n = integer() <optional>]]></c></tag> + <item> + <p> + For TLS connections this value is used to handle the + internal socket. As the implementation was changed from an + active once to an active N behavior (N = 100), for + performance reasons, this option exist for possible tweaking + or restoring of the old behavior (internal_active_n = 1) in + unforeseen scenarios. The option will not affect erlang + distribution over TLS that will always run in active N mode. + Added in ssl-9.1 (OTP-21.2). + </p> + </item> </taglist> </section> @@ -167,7 +192,7 @@ <title>ERROR LOGGER AND EVENT HANDLERS</title> <p>The SSL application uses the default <seealso marker="kernel:error_logger">OTP error logger</seealso> to log - unexpected errors and TLS alerts. The logging of TLS alerts may be + unexpected errors and TLS/DTLS alerts. The logging of TLS/DTLS alerts may be turned off with the <c>log_alert</c> option. </p> </section> diff --git a/lib/ssl/doc/src/ssl_crl_cache.xml b/lib/ssl/doc/src/ssl_crl_cache.xml index 7a67de3971..a33aec62a7 100644 --- a/lib/ssl/doc/src/ssl_crl_cache.xml +++ b/lib/ssl/doc/src/ssl_crl_cache.xml @@ -4,7 +4,7 @@ <erlref> <header> <copyright> - <year>2015</year><year>2015</year> + <year>2015</year><year>2018</year> <holder>Ericsson AB. All Rights Reserved.</holder> </copyright> <legalnotice> @@ -24,7 +24,7 @@ <file>ssl_crl_cache.xml</file> </header> - <module>ssl_crl_cache</module> + <module since="OTP 18.0">ssl_crl_cache</module> <modulesummary>CRL cache </modulesummary> <description> <p> @@ -34,33 +34,44 @@ the following functions are available. </p> </description> + + <datatypes> + <datatype_title>DATA TYPES</datatype_title> + + <datatype> + <name name="crl_src"/> + </datatype> + + <datatype> + <name name="uri"/> + </datatype> + + </datatypes> <funcs> <func> - <name>delete(Entries) -> ok | {error, Reason} </name> + <name since="OTP 18.0">delete(Entries) -> ok | {error, Reason} </name> <fsummary> </fsummary> <type> - <v> Entries = <seealso marker="inets:http_uri">http_uri:uri() </seealso> | {file, string()} | {der, [<seealso - marker="public_key:public_key"> public_key:der_encoded() </seealso>]}</v> - <v> Reason = term()</v> + <v> Entries = <seealso marker="#type-crl_src">crl_src()</seealso>]}</v> + <v> Reason = crl_reason()</v> </type> <desc> <p>Delete CRLs from the ssl applications local cache. </p> </desc> </func> <func> - <name>insert(CRLSrc) -> ok | {error, Reason}</name> - <name>insert(URI, CRLSrc) -> ok | {error, Reason}</name> + <name since="OTP 18.0">insert(CRLSrc) -> ok | {error, Reason}</name> + <name since="OTP 18.0">insert(URI, CRLSrc) -> ok | {error, Reason}</name> <fsummary> </fsummary> <type> - <v> CRLSrc = {file, string()} | {der, [ <seealso - marker="public_key:public_key"> public_key:der_encoded() </seealso> ]}</v> - <v> URI = <seealso marker="inets:http_uri">http_uri:uri() </seealso> </v> + <v> CRLSrc = <seealso marker="#type-crl_src">crl_src()</seealso>]}</v> + <v> URI = <seealso marker="#type-uri">uri()</seealso> </v> <v> Reason = term()</v> </type> <desc> - <p>Insert CRLs into the ssl applications local cache. </p> + <p>Insert CRLs, available to fetch on DER format from <c>URI</c>, into the ssl applications local cache. </p> </desc> </func> </funcs> -</erlref>
\ No newline at end of file +</erlref> diff --git a/lib/ssl/doc/src/ssl_crl_cache_api.xml b/lib/ssl/doc/src/ssl_crl_cache_api.xml index c6774b4df6..4cba4e1de1 100644 --- a/lib/ssl/doc/src/ssl_crl_cache_api.xml +++ b/lib/ssl/doc/src/ssl_crl_cache_api.xml @@ -24,7 +24,7 @@ <file>ssl_crl_cache_api.xml</file> </header> - <module>ssl_crl_cache_api</module> + <module since="OTP 18.0">ssl_crl_cache_api</module> <modulesummary>API for a SSL/TLS CRL (Certificate Revocation List) cache.</modulesummary> <description> <p> @@ -39,35 +39,44 @@ a CRL cache. </p> </description> - - <section> - <title>DATA TYPES</title> - - <p>The following data types are used in the functions below: - </p> - - <taglist> - - <tag><c>cache_ref() =</c></tag> - <item>opaque()</item> - <tag><c>dist_point() =</c></tag> - <item><p>#'DistributionPoint'{} see <seealso - marker="public_key:public_key_records"> X509 certificates records</seealso></p></item> - - </taglist> + + + <!-- + ================================================================ + = Data types = + ================================================================ + --> + + <datatypes> - </section> + <datatype> + <name name="crl_cache_ref"/> + <desc> + <p>Reference to the CRL cache.</p> + </desc> + </datatype> + + + <datatype> + <name name="dist_point"/> + <desc> + <p>For description see <seealso + marker="public_key:public_key_records"> X509 certificates records</seealso></p> + </desc> + </datatype> + </datatypes> + <funcs> <func> - <name>fresh_crl(DistributionPoint, CRL) -> FreshCRL</name> + <name since="OTP 18.0">fresh_crl(DistributionPoint, CRL) -> FreshCRL</name> <fsummary> <c>fun fresh_crl/2 </c> will be used as input option <c>update_crl</c> to public_key:pkix_crls_validate/3 </fsummary> <type> - <v> DistributionPoint = dist_point() </v> + <v> DistributionPoint = <seealso marker="#type-dist_point"> dist_point() </seealso> </v> <v> CRL = [<seealso - marker="public_key:public_key">public_key:der_encoded()</seealso>] </v> + marker="public_key:public_key#type-der_encoded">public_key:der_encoded()</seealso>] </v> <v> FreshCRL = [<seealso - marker="public_key:public_key">public_key:der_encoded()</seealso>] </v> + marker="public_key:public_key#type-der_encoded">public_key:der_encoded()</seealso>] </v> </type> <desc> <p> <c>fun fresh_crl/2 </c> will be used as input option <c>update_crl</c> to @@ -76,16 +85,16 @@ </func> <func> - <name>lookup(DistributionPoint, Issuer, DbHandle) -> not_available | CRLs </name> - <name>lookup(DistributionPoint, DbHandle) -> not_available | CRLs </name> + <name since="OTP 19.0">lookup(DistributionPoint, Issuer, DbHandle) -> not_available | CRLs </name> + <name since="OTP 18.0">lookup(DistributionPoint, DbHandle) -> not_available | CRLs </name> <fsummary> </fsummary> <type> - <v> DistributionPoint = dist_point() </v> + <v> DistributionPoint = <seealso marker="#type-dist_point"> dist_point() </seealso> </v> <v> Issuer = <seealso - marker="public_key:public_key">public_key:issuer_name()</seealso> </v> - <v> DbHandle = cache_ref() </v> + marker="public_key:public_key#type-issuer_name">public_key:issuer_name()</seealso> </v> + <v> DbHandle = <seealso marker="#type-crl_cache_ref"> crl_cache_ref() </seealso></v> <v> CRLs = [<seealso - marker="public_key:public_key">public_key:der_encoded()</seealso>] </v> + marker="public_key:public_key#type-der_encoded">public_key:der_encoded()</seealso>] </v> </type> <desc> <p>Lookup the CRLs belonging to the distribution point <c> Distributionpoint</c>. This function may choose to only look in the cache or to follow distribution point @@ -106,12 +115,12 @@ </func> <func> - <name>select(Issuer, DbHandle) -> CRLs </name> + <name since="OTP 18.0">select(Issuer, DbHandle) -> CRLs </name> <fsummary>Select the CRLs in the cache that are issued by <c>Issuer</c></fsummary> <type> <v> Issuer = <seealso - marker="public_key:public_key">public_key:issuer_name()</seealso></v> - <v> DbHandle = cache_ref() </v> + marker="public_key:public_key#type-issuer_name">public_key:issuer_name()</seealso></v> + <v> DbHandle = <seealso marker="#type-crl_cache_ref"> cache_ref() </seealso></v> </type> <desc> <p>Select the CRLs in the cache that are issued by <c>Issuer</c> </p> diff --git a/lib/ssl/doc/src/ssl_distribution.xml b/lib/ssl/doc/src/ssl_distribution.xml index 7f8a08f704..e14f3f90dc 100644 --- a/lib/ssl/doc/src/ssl_distribution.xml +++ b/lib/ssl/doc/src/ssl_distribution.xml @@ -22,7 +22,7 @@ </legalnotice> - <title>Using SSL for Erlang Distribution</title> + <title>Using TLS for Erlang Distribution</title> <prepared>P Nyblom</prepared> <responsible></responsible> <docno></docno> @@ -33,7 +33,7 @@ <file>ssl_distribution.xml</file> </header> <p>This section describes how the Erlang distribution can use - SSL to get extra verification and security.</p> + TLS to get extra verification and security.</p> <p>The Erlang distribution can in theory use almost any connection-based protocol as bearer. However, a module that @@ -45,16 +45,16 @@ <p>In the SSL application, an extra distribution module, <c>inet_tls_dist</c>, can be used as an - alternative. All distribution connections will use SSL and + alternative. All distribution connections will use TLS and all participating Erlang nodes in a distributed system must use this distribution module.</p> <p>The security level depends on the parameters provided to the - SSL connection setup. Erlang node cookies are however always + TLS connection setup. Erlang node cookies are however always used, as they can be used to differentiate between two different Erlang networks.</p> - <p>To set up Erlang distribution over SSL:</p> + <p>To set up Erlang distribution over TLS:</p> <list type="bulleted"> <item><em>Step 1:</em> Build boot scripts including the @@ -63,13 +63,13 @@ <c>net_kernel</c>.</item> <item><em>Step 3:</em> Specify the security options and other SSL options.</item> - <item><em>Step 4:</em> Set up the environment to always use SSL.</item> + <item><em>Step 4:</em> Set up the environment to always use TLS.</item> </list> <p>The following sections describe these steps.</p> <section> - <title>Building Boot Scripts Including the ssl Application</title> + <title>Building Boot Scripts Including the SSL Application</title> <p>Boot scripts are built using the <c>systools</c> utility in the SASL application. For more information on <c>systools</c>, see the SASL documentation. This is only an example of @@ -90,7 +90,7 @@ STDLIB application.</p></item> </list> - <p>The following shows an example <c>.rel</c> file with SSL + <p>The following shows an example <c>.rel</c> file with TLS added:</p> <code type="none"> {release, {"OTP APN 181 01","R15A"}, {erts, "5.9"}, @@ -154,7 +154,7 @@ Eshell V5.0 (abort with ^G) <section> <title>Specifying Distribution Module for net_kernel</title> - <p>The distribution module for SSL is named <c>inet_tls_dist</c> + <p>The distribution module for SSL/TLS is named <c>inet_tls_dist</c> and is specified on the command line with option <c>-proto_dist</c>. The argument to <c>-proto_dist</c> is to be the module name without suffix <c>_dist</c>. So, this distribution @@ -174,21 +174,21 @@ Eshell V5.0 (abort with ^G) (ssl_test@myhost)1> </code> <p>However, a node started in this way refuses to talk - to other nodes, as no SSL parameters are supplied + to other nodes, as no TLS parameters are supplied (see the next section).</p> </section> <section> - <title>Specifying SSL Options</title> + <title>Specifying SSL/TLS Options</title> <p> - The SSL distribution options can be written into a file + The SSL/TLS distribution options can be written into a file that is consulted when the node is started. This file name is then specified with the command line argument <c>-ssl_dist_optfile</c>. </p> <p> - Any available SSL option can be specified in an options file, + Any available SSL/TLS option can be specified in an options file, but note that options that take a <c>fun()</c> has to use the syntax <c>fun Mod:Func/Arity</c> since a function body can not be compiled when consulting a file. @@ -202,7 +202,7 @@ Eshell V5.0 (abort with ^G) interfere severely, so beware! </p> <p> - For SSL to work, at least a public key and a certificate + For SSL/TLS to work, at least a public key and a certificate must be specified for the server side. In the following example, the PEM file <c>"/home/me/ssl/erlserver.pem"</c> contains both @@ -257,13 +257,13 @@ $ erl -boot /home/me/ssl/start_ssl -proto_dist inet_tls still be accepted if it does not present any certificate. </p> <p> - A node started in this way is fully functional, using SSL + A node started in this way is fully functional, using TLS as the distribution protocol. </p> </section> <section> - <title>Specifying SSL Options (Legacy)</title> + <title>Specifying SSL/TLS Options (Legacy)</title> <p> As in the previous section the PEM file @@ -272,9 +272,9 @@ $ erl -boot /home/me/ssl/start_ssl -proto_dist inet_tls </p> <p>On the <c>erl</c> command line you can specify options that the - SSL distribution adds when creating a socket.</p> + SSL/TLS distribution adds when creating a socket.</p> - <p>The simplest SSL options in the following list can be specified + <p>The simplest SSL/TLS options in the following list can be specified by adding the prefix <c>server_</c> or <c>client_</c> to the option name:</p> <list type="bulleted"> @@ -294,7 +294,7 @@ $ erl -boot /home/me/ssl/start_ssl -proto_dist inet_tls </list> <p>Note that <c>verify_fun</c> needs to be written in a different - form than the corresponding SSL option, since funs are not + form than the corresponding SSL/TLS option, since funs are not accepted on the command line.</p> <p>The server can also take the options <c>dhfile</c> and @@ -307,7 +307,7 @@ $ erl -boot /home/me/ssl/start_ssl -proto_dist inet_tls <p>Raw socket options, such as <c>packet</c> and <c>size</c> must not be specified on the command line.</p> - <p>The command-line argument for specifying the SSL options is named + <p>The command-line argument for specifying the SSL/TLS options is named <c>-ssl_dist_opt</c> and is to be followed by pairs of SSL options and their values. Argument <c>-ssl_dist_opt</c> can be repeated any number of times.</p> @@ -331,10 +331,10 @@ Eshell V5.0 (abort with ^G) </section> <section> - <title>Setting up Environment to Always Use SSL (Legacy)</title> + <title>Setting up Environment to Always Use SSL/TLS (Legacy)</title> <p>A convenient way to specify arguments to Erlang is to use environment variable <c>ERL_FLAGS</c>. All the flags needed to - use the SSL distribution can be specified in that variable and are + use the SSL/TLS distribution can be specified in that variable and are then interpreted as command-line arguments for all subsequent invocations of Erlang.</p> @@ -365,8 +365,8 @@ Eshell V5.0 (abort with ^G) </section> <section> - <title>Using SSL distribution over IPv6</title> - <p>It is possible to use SSL distribution over IPv6 instead of + <title>Using SSL/TLS distribution over IPv6</title> + <p>It is possible to use SSL/TLS distribution over IPv6 instead of IPv4. To do this, pass the option <c>-proto_dist inet6_tls</c> instead of <c>-proto_dist inet_tls</c> when starting Erlang, either on the command line or in the <c>ERL_FLAGS</c> environment @@ -380,6 +380,6 @@ $ erl -boot /home/me/ssl/start_ssl -proto_dist inet6_tls </code> <p>A node started in this way will only be able to communicate with - other nodes using SSL distribution over IPv6.</p> + other nodes using SSL/TLS distribution over IPv6.</p> </section> </chapter> diff --git a/lib/ssl/doc/src/ssl_introduction.xml b/lib/ssl/doc/src/ssl_introduction.xml index 25b05a769d..adcfb091b7 100644 --- a/lib/ssl/doc/src/ssl_introduction.xml +++ b/lib/ssl/doc/src/ssl_introduction.xml @@ -5,7 +5,7 @@ <header> <copyright> <year>2015</year> - <year>2015</year> + <year>2018</year> <holder>Ericsson AB, All Rights Reserved</holder> </copyright> <legalnotice> @@ -41,14 +41,15 @@ authenticate the counterpart with whom they communicate, and to exchange a symmetric key for payload encryption. The protocol provides data/message confidentiality (encryption), integrity (through message authentication code checks) - and host verification (through certificate path validation).</p> + and host verification (through certificate path validation). DTLS (Datagram Transport Layer Security) that + is based on TLS but datagram oriented instead of stream oriented.</p> </section> <section> <title>Prerequisites</title> <p>It is assumed that the reader is familiar with the Erlang programming language, the concepts of OTP, and has a basic - understanding of SSL/TLS.</p> + understanding of SSL/TLS/DTLS.</p> </section> </chapter> diff --git a/lib/ssl/doc/src/ssl_protocol.xml b/lib/ssl/doc/src/ssl_protocol.xml index 31a22db58b..3ab836443f 100644 --- a/lib/ssl/doc/src/ssl_protocol.xml +++ b/lib/ssl/doc/src/ssl_protocol.xml @@ -4,7 +4,7 @@ <chapter> <header> <copyright> - <year>2003</year><year>2015</year> + <year>2003</year><year>2018</year> <holder>Ericsson AB. All Rights Reserved.</holder> </copyright> <legalnotice> @@ -22,7 +22,7 @@ </legalnotice> - <title>TLS and its Predecessor, SSL</title> + <title>TLS/DTLS and TLS Predecessor, SSL</title> <prepared></prepared> <responsible></responsible> <docno></docno> @@ -33,7 +33,7 @@ <file>ssl_protocol.xml</file> </header> - <p>The Erlang SSL application implements the SSL/TLS protocol + <p>The Erlang SSL application implements the SSL/TLS/DTLS protocol for the currently supported versions, see the <seealso marker="ssl">ssl(3)</seealso> manual page. </p> @@ -41,20 +41,22 @@ <p>By default SSL/TLS is run over the TCP/IP protocol even though you can plug in any other reliable transport protocol with the same Application Programming Interface (API) as the - <c>gen_tcp</c> module in Kernel.</p> + <c>gen_tcp</c> module in Kernel. DTLS is by default run over UDP/IP, + which means that application data has no delivery guarentees. Other + transports, such as SCTP, may be supported in future releases.</p> <p>If a client and a server wants to use an upgrade mechanism, such as - defined by RFC 2817, to upgrade a regular TCP/IP connection to an SSL + defined by RFC 2817, to upgrade a regular TCP/IP connection to an TLS connection, this is supported by the Erlang SSL application API. This can be useful for, for example, supporting HTTP and HTTPS on the same port and - implementing virtual hosting. + implementing virtual hosting. Note this is a TLS feature only. </p> <section> <title>Security Overview</title> <p>To achieve authentication and privacy, the client and server - perform a TLS handshake procedure before transmitting or receiving + perform a TLS/DTLS handshake procedure before transmitting or receiving any data. During the handshake, they agree on a protocol version and cryptographic algorithms, generate shared secrets using public key cryptographies, and optionally authenticate each other with @@ -73,10 +75,10 @@ <p>The keys for the symmetric encryption are generated uniquely for each connection and are based on a secret negotiated - in the TLS handshake.</p> + in the TLS/DTLS handshake.</p> - <p>The TLS handshake protocol and data transfer is run on top of - the TLS Record Protocol, which uses a keyed-hash Message + <p>The TLS/DTLS handshake protocol and data transfer is run on top of + the TLS/DTLS Record Protocol, which uses a keyed-hash Message Authenticity Code (MAC), or a Hash-based MAC (HMAC), to protect the message data integrity. From the TLS RFC: "A Message Authentication Code is a @@ -152,8 +154,8 @@ from it was saved, for security reasons. The amount of time the session data is to be saved can be configured.</p> - <p>By default the SSL clients try to reuse an available session and - by default the SSL servers agree to reuse sessions when clients + <p>By default the TLS/DTLS clients try to reuse an available session and + by default the TLS/DTLS servers agree to reuse sessions when clients ask for it.</p> </section> diff --git a/lib/ssl/doc/src/ssl_session_cache_api.xml b/lib/ssl/doc/src/ssl_session_cache_api.xml index a84a3dfce9..e841729e57 100644 --- a/lib/ssl/doc/src/ssl_session_cache_api.xml +++ b/lib/ssl/doc/src/ssl_session_cache_api.xml @@ -28,7 +28,7 @@ <rev></rev> <file>ssl_session_cache_api.xml</file> </header> - <module>ssl_session_cache_api</module> + <module since="OTP R14B">ssl_session_cache_api</module> <modulesummary>TLS session cache API</modulesummary> <description> @@ -38,39 +38,50 @@ defining a new callback module implementing this API. </p> </description> - <section> - <title>DATA TYPES</title> - <p>The following data types are used in the functions for - <c>ssl_session_cache_api</c>:</p> - - <taglist> - <tag><c>cache_ref() =</c></tag> - <item><p><c>opaque()</c></p></item> - - <tag><c>key() =</c></tag> - <item><p><c>{partialkey(), session_id()}</c></p></item> - - <tag><c>partialkey() =</c></tag> - <item><p><c>opaque()</c></p></item> - - <tag><c>session_id() =</c></tag> - <item><p><c>binary()</c></p></item> - - <tag><c>session()</c> =</tag> - <item><p><c>opaque()</c></p></item> - </taglist> - - </section> + <!-- + ================================================================ + = Data types = + ================================================================ + --> + + <datatypes> + + <datatype> + <name name="session_cache_ref"/> + </datatype> + + <datatype> + <name name="session_cache_key"/> + <desc> + <p>A key to an entry in the session cache.</p> + </desc> + </datatype> + + <datatype> + <name name="partial_key"/> + <desc> + <p>The opaque part of the key. Does not need to be handled + by the callback.</p> + </desc> + </datatype> + + <datatype> + <name name="session"/> + <desc> + <p>The session data that is stored for each session.</p> + </desc> + </datatype> + </datatypes> <funcs> <func> - <name>delete(Cache, Key) -> _</name> + <name since="OTP R14B">delete(Cache, Key) -> _</name> <fsummary>Deletes a cache entry.</fsummary> <type> - <v>Cache = cache_ref()</v> - <v>Key = key()</v> + <v>Cache = <seealso marker="#type-session_cache_ref"> session_cache_ref() </seealso></v> + <v>Key = <seealso marker="#type-session_cache_key">session_cache_key() </seealso> </v> </type> <desc> <p>Deletes a cache entry. Is only called from the cache @@ -80,10 +91,12 @@ </func> <func> - <name>foldl(Fun, Acc0, Cache) -> Acc</name> + <name since="OTP R14B">foldl(Fun, Acc0, Cache) -> Acc</name> <fsummary></fsummary> <type> - <v></v> + <v>Fun = fun()</v> + <v>Acc0 = Acc = term()</v> + <v>Cache = <seealso marker="#type-session_cache_ref"> session_cache_ref() </seealso></v> </type> <desc> <p>Calls <c>Fun(Elem, AccIn)</c> on successive elements of the @@ -96,10 +109,11 @@ </func> <func> - <name>init(Args) -> opaque() </name> + <name since="OTP 18.0">init(Args) -> Cache </name> <fsummary>Returns cache reference.</fsummary> <type> - <v>Args = proplists:proplist()</v> + <v>Cache = <seealso marker="#type-session_cache_ref"> session_cache_ref() </seealso></v> + <v>Args = <seealso marker="stdlib:proplists#type-proplist">proplists:proplist()</seealso></v> </type> <desc> <p>Includes property <c>{role, client | server}</c>. @@ -121,12 +135,12 @@ </func> <func> - <name>lookup(Cache, Key) -> Entry</name> + <name since="OTP R14B">lookup(Cache, Key) -> Entry</name> <fsummary>Looks up a cache entry.</fsummary> <type> - <v>Cache = cache_ref()</v> - <v>Key = key()</v> - <v>Entry = session() | undefined</v> + <v>Cache = <seealso marker="#type-session_cache_ref"> session_cache_ref() </seealso></v> + <v>Key = <seealso marker="#type-session_cache_key">session_cache_key()</seealso> </v> + <v>Session = <seealso marker="#type-session">session()</seealso> | undefined</v> </type> <desc> <p>Looks up a cache entry. Is to be callable from any @@ -136,12 +150,12 @@ </func> <func> - <name>select_session(Cache, PartialKey) -> [session()]</name> + <name since="OTP R14B">select_session(Cache, PartialKey) -> [Session]</name> <fsummary>Selects sessions that can be reused.</fsummary> <type> - <v>Cache = cache_ref()</v> - <v>PartialKey = partialkey()</v> - <v>Session = session()</v> + <v>Cache = <seealso marker="#type-session_cache_ref"> session_cache_ref() </seealso></v> + <v>PartialKey = <seealso marker="#type-partial_key"> partial_key() </seealso></v> + <v>Session = <seealso marker="#type-session">session()</seealso></v> </type> <desc> <p>Selects sessions that can be reused. Is to be callable @@ -151,10 +165,10 @@ </func> <func> - <name>size(Cache) -> integer()</name> + <name since="OTP 19.3">size(Cache) -> integer()</name> <fsummary>Returns the number of sessions in the cache.</fsummary> <type> - <v>Cache = cache_ref()</v> + <v>Cache = <seealso marker="#type-session_cache_ref"> session_cache_ref() </seealso></v> </type> <desc> <p>Returns the number of sessions in the cache. If size @@ -166,11 +180,12 @@ </func> <func> - <name>terminate(Cache) -> _</name> + <name since="OTP R14B">terminate(Cache) -> _</name> <fsummary>Called by the process that handles the cache when it is about to terminate.</fsummary> <type> - <v>Cache = term() - as returned by init/0</v> + <v>Cache = <seealso marker="#type-session_cache_ref"> session_cache_ref() </seealso></v> + <d>As returned by init/0</d> </type> <desc> <p>Takes care of possible cleanup that is needed when the @@ -180,12 +195,12 @@ </func> <func> - <name>update(Cache, Key, Session) -> _</name> + <name since="OTP R14B">update(Cache, Key, Session) -> _</name> <fsummary>Caches a new session or updates an already cached one.</fsummary> <type> - <v>Cache = cache_ref()</v> - <v>Key = key()</v> - <v>Session = session()</v> + <v>Cache = <seealso marker="#type-session_cache_ref"> session_cache_ref() </seealso></v> + <v>Key = <seealso marker="#type-session_cache_key">session_cache_key()</seealso> </v> + <v>Session = <seealso marker="#type-session">session()</seealso></v> </type> <desc> <p>Caches a new session or updates an already cached one. Is diff --git a/lib/ssl/doc/src/using_ssl.xml b/lib/ssl/doc/src/using_ssl.xml index 775066ef7d..f2f9b66a31 100644 --- a/lib/ssl/doc/src/using_ssl.xml +++ b/lib/ssl/doc/src/using_ssl.xml @@ -4,7 +4,7 @@ <chapter> <header> <copyright> - <year>2003</year><year>2016</year> + <year>2003</year><year>2018</year> <holder>Ericsson AB. All Rights Reserved.</holder> </copyright> <legalnotice> @@ -22,7 +22,7 @@ </legalnotice> - <title>Using SSL API</title> + <title>Using SSL application API</title> <prepared></prepared> <responsible></responsible> <docno></docno> @@ -51,7 +51,7 @@ <section> <title>Minimal Example</title> - <note><p> The minimal setup is not the most secure setup of SSL.</p> + <note><p> The minimal setup is not the most secure setup of SSL/TLS/DTLS.</p> </note> <p>To set up client/server connections:</p> @@ -60,27 +60,27 @@ <code type="erl">1 server> ssl:start(). ok</code> - <p><em>Step 2:</em> Create an SSL listen socket:</p> + <p><em>Step 2:</em> Create an TLS listen socket: (To run DTLS add the option {protocol, dtls})</p> <code type="erl">2 server> {ok, ListenSocket} = ssl:listen(9999, [{certfile, "cert.pem"}, {keyfile, "key.pem"},{reuseaddr, true}]). {ok,{sslsocket, [...]}}</code> - <p><em>Step 3:</em> Do a transport accept on the SSL listen socket:</p> - <code type="erl">3 server> {ok, Socket} = ssl:transport_accept(ListenSocket). + <p><em>Step 3:</em> Do a transport accept on the TLS listen socket:</p> + <code type="erl">3 server> {ok, TLSTransportSocket} = ssl:transport_accept(ListenSocket). {ok,{sslsocket, [...]}}</code> - <p><em>Step 4:</em> Start the client side:</p> + <p><em>Step 4:</em> Start the client side: </p> <code type="erl">1 client> ssl:start(). ok</code> - + <p> To run DTLS add the option {protocol, dtls} to third argument.</p> <code type="erl">2 client> {ok, Socket} = ssl:connect("localhost", 9999, [], infinity). {ok,{sslsocket, [...]}}</code> - <p><em>Step 5:</em> Do the SSL handshake:</p> - <code type="erl">4 server> ok = ssl:ssl_accept(Socket). + <p><em>Step 5:</em> Do the TLS handshake:</p> + <code type="erl">4 server> {ok, Socket} = ssl:handshake(TLSTransportSocket). ok</code> - <p><em>Step 6:</em> Send a message over SSL:</p> + <p><em>Step 6:</em> Send a message over TLS:</p> <code type="erl">5 server> ssl:send(Socket, "foo"). ok</code> @@ -92,7 +92,7 @@ ok</code> </section> <section> - <title>Upgrade Example</title> + <title>Upgrade Example - TLS only </title> <note><p>To upgrade a TCP/IP connection to an SSL connection, the client and server must agree to do so. The agreement @@ -125,24 +125,24 @@ ok</code> <code type="erl">4 server> inet:setopts(Socket, [{active, false}]). ok</code> - <p><em>Step 6:</em> Do the SSL handshake:</p> - <code type="erl">5 server> {ok, SSLSocket} = ssl:ssl_accept(Socket, [{cacertfile, "cacerts.pem"}, + <p><em>Step 6:</em> Do the TLS handshake:</p> + <code type="erl">5 server> {ok, TLSSocket} = ssl:handshake(Socket, [{cacertfile, "cacerts.pem"}, {certfile, "cert.pem"}, {keyfile, "key.pem"}]). {ok,{sslsocket,[...]}}</code> - <p><em>Step 7:</em> Upgrade to an SSL connection. The client and server + <p><em>Step 7:</em> Upgrade to an TLS connection. The client and server must agree upon the upgrade. The server must call - <c>ssl:accept/2</c> before the client calls <c>ssl:connect/3.</c></p> - <code type="erl">3 client>{ok, SSLSocket} = ssl:connect(Socket, [{cacertfile, "cacerts.pem"}, + <c>ssl:handshake/2</c> before the client calls <c>ssl:connect/3.</c></p> + <code type="erl">3 client>{ok, TLSSocket} = ssl:connect(Socket, [{cacertfile, "cacerts.pem"}, {certfile, "cert.pem"}, {keyfile, "key.pem"}], infinity). {ok,{sslsocket,[...]}}</code> - <p><em>Step 8:</em> Send a message over SSL:</p> - <code type="erl">4 client> ssl:send(SSLSocket, "foo"). + <p><em>Step 8:</em> Send a message over TLS:</p> + <code type="erl">4 client> ssl:send(TLSSocket, "foo"). ok</code> - <p><em>Step 9:</em> Set <c>active true</c> on the SSL socket:</p> - <code type="erl">4 server> ssl:setopts(SSLSocket, [{active, true}]). + <p><em>Step 9:</em> Set <c>active true</c> on the TLS socket:</p> + <code type="erl">4 server> ssl:setopts(TLSSocket, [{active, true}]). ok</code> <p><em>Step 10:</em> Flush the shell message queue to see that the message |