diff options
Diffstat (limited to 'lib/ssl/doc')
| -rw-r--r-- | lib/ssl/doc/src/notes.xml | 397 | ||||
| -rw-r--r-- | lib/ssl/doc/src/ssl.xml | 182 | ||||
| -rw-r--r-- | lib/ssl/doc/src/ssl_app.xml | 57 | ||||
| -rw-r--r-- | lib/ssl/doc/src/ssl_crl_cache_api.xml | 6 | ||||
| -rw-r--r-- | lib/ssl/doc/src/ssl_distribution.xml | 23 | ||||
| -rw-r--r-- | lib/ssl/doc/src/ssl_session_cache_api.xml | 10 |
6 files changed, 576 insertions, 99 deletions
diff --git a/lib/ssl/doc/src/notes.xml b/lib/ssl/doc/src/notes.xml index b87b1b4fa7..1e8de1a8a3 100644 --- a/lib/ssl/doc/src/notes.xml +++ b/lib/ssl/doc/src/notes.xml @@ -26,7 +26,382 @@ <file>notes.xml</file> </header> <p>This document describes the changes made to the SSL application.</p> - <section><title>SSL 7.0</title> + + +<section><title>SSL 7.3.3.1</title> + + <section><title>Fixed Bugs and Malfunctions</title> + <list> + <item> + <p> + The TLS/SSL protocol version selection for the SSL server + has been corrected to follow RFC 5246 Appendix E.1 + especially in case where the list of supported versions + has gaps. Now the server selects the highest protocol + version it supports that is not higher than what the + client supports.</p> + <p> + Own Id: OTP-13753 Aux Id: seq13150 </p> + </item> + </list> + </section> + +</section> + +<section><title>SSL 7.3.3</title> + + <section><title>Fixed Bugs and Malfunctions</title> + <list> + <item> + <p> + Correct ssl:prf/5 to use the negotiated cipher suite's + prf function in ssl:prf/5 instead of the default prf.</p> + <p> + Own Id: OTP-13546</p> + </item> + <item> + <p> + Timeouts may have the value 0, guards have been corrected + to allow this</p> + <p> + Own Id: OTP-13635</p> + </item> + <item> + <p> + Change of internal handling of hash sign pairs as the + used one enforced to much restrictions making some valid + combinations unavailable.</p> + <p> + Own Id: OTP-13670</p> + </item> + </list> + </section> + + + <section><title>Improvements and New Features</title> + <list> + <item> + <p> + Create a little randomness in sending of session + invalidation messages, to mitigate load when whole table + is invalidated.</p> + <p> + Own Id: OTP-13490</p> + </item> + </list> + </section> + +</section> + +<section><title>SSL 7.3.2</title> + + <section><title>Fixed Bugs and Malfunctions</title> + <list> + <item> + <p> + Correct cipher suites conversion and gaurd expression. + Caused problems with GCM cipher suites and client side + option to set signature_algorithms extention values.</p> + <p> + Own Id: OTP-13525</p> + </item> + </list> + </section> + +</section> + +<section><title>SSL 7.3.1</title> + + <section><title>Fixed Bugs and Malfunctions</title> + <list> + <item> + <p> + Corrections to cipher suite handling using the 3 and 4 + tuple format in addition to commit + 89d7e21cf4ae988c57c8ef047bfe85127875c70c</p> + <p> + Own Id: OTP-13511</p> + </item> + </list> + </section> + + + <section><title>Improvements and New Features</title> + <list> + <item> + <p> + Make values for the TLS-1.2 signature_algorithms + extension configurable</p> + <p> + Own Id: OTP-13261</p> + </item> + </list> + </section> + +</section> + +<section><title>SSL 7.3</title> + + <section><title>Fixed Bugs and Malfunctions</title> + <list> + <item> + <p> + Make sure there is only one poller validator at a time + for validating the session cache.</p> + <p> + Own Id: OTP-13185</p> + </item> + <item> + <p> + A timing related issue could cause ssl to hang, + especially happened with newer versions of OpenSSL in + combination with ECC ciphers.</p> + <p> + Own Id: OTP-13253</p> + </item> + <item> + <p> + Work around a race condition in the TLS distribution + start.</p> + <p> + Own Id: OTP-13268</p> + </item> + <item> + <p> + Big handshake messages are now correctly fragmented in + the TLS record layer.</p> + <p> + Own Id: OTP-13306</p> + </item> + <item> + <p> + Improve portability of ECC tests in Crypto and SSL for + "exotic" OpenSSL versions.</p> + <p> + Own Id: OTP-13311</p> + </item> + <item> + <p> + Certificate extensions marked as critical are ignored + when using verify_none</p> + <p> + Own Id: OTP-13377</p> + </item> + <item> + <p> + If a certificate doesn't contain a CRL Distribution + Points extension, and the relevant CRL is not in the + cache, and the <c>crl_check</c> option is not set to + <c>best_effort</c> , the revocation check should fail.</p> + <p> + Own Id: OTP-13378</p> + </item> + <item> + <p> + Enable TLS distribution over IPv6</p> + <p> + Own Id: OTP-13391</p> + </item> + </list> + </section> + + + <section><title>Improvements and New Features</title> + <list> + <item> + <p> + Improve error reporting for TLS distribution</p> + <p> + Own Id: OTP-13219</p> + </item> + <item> + <p> + Include options from connect, listen and accept in + <c>connection_information/1,2</c></p> + <p> + Own Id: OTP-13232</p> + </item> + <item> + <p> + Allow adding extra options for outgoing TLS distribution + connections, as supported for plain TCP connections.</p> + <p> + Own Id: OTP-13285</p> + </item> + <item> + <p> + Use loopback as server option in TLS-distribution module</p> + <p> + Own Id: OTP-13300</p> + </item> + <item> + <p> + Verify certificate signature against original certificate + binary.</p> + <p> + This avoids bugs due to encoding errors when re-encoding + a decode certificate. As there exists several decode step + and using of different ASN.1 specification this is a risk + worth avoiding.</p> + <p> + Own Id: OTP-13334</p> + </item> + <item> + <p> + Use <c>application:ensure_all_started/2</c> instead of + hard-coding dependencies</p> + <p> + Own Id: OTP-13363</p> + </item> + </list> + </section> + +</section> + +<section><title>SSL 7.2</title> + + <section><title>Fixed Bugs and Malfunctions</title> + <list> + <item> + <p> + Honor distribution port range options</p> + <p> + Own Id: OTP-12838</p> + </item> + <item> + <p> + Correct supervisor specification in TLS distribution.</p> + <p> + Own Id: OTP-13134</p> + </item> + <item> + <p> + Correct cache timeout</p> + <p> + Own Id: OTP-13141</p> + </item> + <item> + <p> + Avoid crash and restart of ssl process when key file does + not exist.</p> + <p> + Own Id: OTP-13144</p> + </item> + <item> + <p> + Enable passing of raw socket options on the format + {raw,_,_,_} to the underlying socket.</p> + <p> + Own Id: OTP-13166</p> + </item> + <item> + <p> + Hibernation with small or a zero timeout will now work as + expected</p> + <p> + Own Id: OTP-13189</p> + </item> + </list> + </section> + + + <section><title>Improvements and New Features</title> + <list> + <item> + <p> + Add upper limit for session cache, configurable on ssl + application level.</p> + <p> + If upper limit is reached, invalidate the current cache + entries, e.i the session lifetime is the max time a + session will be keept, but it may be invalidated earlier + if the max limit for the table is reached. This will keep + the ssl manager process well behaved, not exhusting + memeory. Invalidating the entries will incrementally + empty the cache to make room for fresh sessions entries.</p> + <p> + Own Id: OTP-12392</p> + </item> + <item> + <p> + Use new time functions to measure passed time.</p> + <p> + Own Id: OTP-12457</p> + </item> + <item> + <p> + Improved error handling in TLS distribution</p> + <p> + Own Id: OTP-13142</p> + </item> + <item> + <p> + Distribution over TLS now honors the nodelay distribution + flag</p> + <p> + Own Id: OTP-13143</p> + </item> + </list> + </section> + +</section> + +<section><title>SSL 7.1</title> + <section><title>Fixed Bugs and Malfunctions</title> + <list> + <item> + <p> + Add DER encoded ECPrivateKey as valid input format for + key option.</p> + <p> + Own Id: OTP-12974</p> + </item> + <item> + <p> + Correct return value of default session callback module</p> + <p> + This error had the symptom that the client check for + unique session would always fail, potentially making the + client session table grow a lot and causing long setup + times.</p> + <p> + Own Id: OTP-12980</p> + </item> + </list> + </section> + + + <section><title>Improvements and New Features</title> + <list> + <item> + <p> + Add possibility to downgrade an SSL/TLS connection to a + tcp connection, and give back the socket control to a + user process.</p> + <p> + This also adds the possibility to specify a timeout to + the ssl:close function.</p> + <p> + Own Id: OTP-11397</p> + </item> + <item> + <p> + Add application setting to be able to change fatal alert + shutdown timeout, also shorten the default timeout. The + fatal alert timeout is the number of milliseconds between + sending of a fatal alert and closing the connection. + Waiting a little while improves the peers chances to + properly receiving the alert so it may shutdown + gracefully.</p> + <p> + Own Id: OTP-12832</p> + </item> + </list> + </section> + +</section> + +<section><title>SSL 7.0</title> <section><title>Fixed Bugs and Malfunctions</title> <list> @@ -51,12 +426,6 @@ <p> Own Id: OTP-12815</p> </item> - <item> - <p> - Gracefully ignore proprietary hash_sign algorithms</p> - <p> - Own Id: OTP-12829</p> - </item> </list> </section> @@ -107,6 +476,20 @@ </section> +<section><title>SSL 6.0.1.1</title> + <section><title>Fixed Bugs and Malfunctions</title> + <list> + <item> + <p> + Gracefully ignore proprietary hash_sign algorithms</p> + <p> + Own Id: OTP-12829</p> + </item> + </list> + </section> +</section> + + <section><title>SSL 6.0.1</title> <section><title>Fixed Bugs and Malfunctions</title> diff --git a/lib/ssl/doc/src/ssl.xml b/lib/ssl/doc/src/ssl.xml index f23b71e28b..e831f73530 100644 --- a/lib/ssl/doc/src/ssl.xml +++ b/lib/ssl/doc/src/ssl.xml @@ -31,37 +31,13 @@ <module>ssl</module> <modulesummary>Interface Functions for Secure Socket Layer</modulesummary> <description> - <p>This module contains interface functions for the SSL.</p> + <p> + This module contains interface functions for the SSL/TLS protocol. + For detailed information about the supported standards see + <seealso marker="ssl_app">ssl(6)</seealso>. + </p> </description> - - <section> - <title>SSL</title> - - <list type="bulleted"> - <item>For application dependencies see <seealso marker="ssl_app"> ssl(6)</seealso> </item> - <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>For security reasons SSL-3.0 is no longer supported by default, - but can be configured.</item> - <item>Ephemeral Diffie-Hellman cipher suites are supported, - but not Diffie Hellman Certificates cipher suites.</item> - <item>Elliptic Curve cipher suites are supported if the Crypto - application supports it and named curves are used. - </item> - <item>Export cipher suites are not supported as the - U.S. lifted its export restrictions in early 2000.</item> - <item>IDEA cipher suites are not supported as they have - become deprecated by the latest TLS specification so it is not - motivated to implement them.</item> - <item>CRL validation is supported.</item> - <item>Policy certificate extensions are not supported.</item> - <item>'Server Name Indication' extension client side - (RFC 6066, Section 3) is supported.</item> - </list> - - </section> - + <section> <title>DATA TYPES</title> <p>The following data types are used in the functions for SSL:</p> @@ -84,11 +60,12 @@ <seealso marker="kernel:gen_tcp">gen_tcp(3)</seealso> manual pages in Kernel.</p></item> - <tag><marker id="type-ssloption"></marker><c>ssloption() =</c></tag> + <tag><marker id="type-ssloption"/><c>ssloption() =</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()} {depth, integer()}</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' @@ -159,7 +136,7 @@ <tag><c>sslsocket() =</c></tag> <item><p>opaque()</p></item> - <tag><c>protocol() =</c></tag> + <tag><marker id="type-protocol"/><c>protocol() =</c></tag> <item><p><c>sslv3 | tlsv1 | 'tlsv1.1' | 'tlsv1.2'</c></p></item> <tag><c>ciphers() =</c></tag> @@ -167,7 +144,9 @@ <p>According to old API.</p></item> <tag><c>ciphersuite() =</c></tag> - <item><p><c>{key_exchange(), cipher(), hash()}</c></p></item> + + <item><p><c>{key_exchange(), cipher(), MAC::hash()} | + {key_exchange(), cipher(), MAC::hash(), PRF::hash()}</c></p></item> <tag><c>key_exchange()=</c></tag> <item><p><c>rsa | dhe_dss | dhe_rsa | dh_anon | psk | dhe_psk @@ -179,7 +158,7 @@ | aes_128_cbc | aes_256_cbc | aes_128_gcm | aes_256_gcm</c></p></item> <tag><c>hash() =</c></tag> - <item><p><c>md5 | sha</c></p></item> + <item><p><c>md5 | sha | sha224 | sha256 | sha348 | sha512</c></p></item> <tag><c>prf_random() =</c></tag> <item><p><c>client_random | server_random</c></p></item> @@ -244,7 +223,7 @@ <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 fallback to unsecure renegotiation if the peer + 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> @@ -292,7 +271,11 @@ atom()}} | terminate regarding verification failures and the connection is established.</p></item> <item><p>If called with an extension unknown to the user application, - return value <c>{unknown, UserState}</c> is to be used.</p></item> + return value <c>{unknown, UserState}</c> is to be used.</p> + + <p>Note that if the fun returns <c>unknown</c> for an extension marked + as critical, validation will fail.</p> + </item> </list> <p>Default option <c>verify_fun</c> in <c>verify_peer mode</c>:</p> @@ -314,6 +297,8 @@ atom()}} | <code> {fun(_,{bad_cert, _}, UserState) -> {valid, UserState}; + (_,{extension, #'Extension'{critical = true}}, UserState) -> + {valid, UserState}; (_,{extension, _}, UserState) -> {unknown, UserState}; (_, valid, UserState) -> @@ -330,7 +315,7 @@ atom()}} | <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 intermediat CA (trusted anchor does not have to be + 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> @@ -375,7 +360,7 @@ marker="public_key:public_key#pkix_path_validation-3">public_key:pkix_path_valid <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 cerificate extensions.</seealso> + marker="public_key:public_key_records"> X509 certificate extensions.</seealso> Requires the OTP inets application.</p> </item> </taglist> @@ -436,7 +421,6 @@ fun(srp, Username :: string(), UserState :: term()) -> <warning><p>Using <c>{padding_check, boolean()}</c> makes TLS vulnerable to the Poodle attack.</p></warning> - </section> <section> @@ -479,8 +463,8 @@ fun(srp, Username :: string(), UserState :: term()) -> <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></tag> - <tag><c>{client_preferred_next_protocols, {Precedence :: server | client, ClientPrefs :: [binary()], Default :: binary()}}</c></tag> + <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> @@ -537,10 +521,45 @@ fun(srp, Username :: string(), UserState :: term()) -> be supported by the server for the prevention to work. </p></warning> </item> - - </taglist> + <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 + suite used for key exchange, payload encryption, message + authentication and pseudo random calculation, the TLS signature + algorithm extension <url + href="http://www.ietf.org/rfc/rfc5246.txt">Section 7.4.1.4.1 in RFC 5246</url> may be + used, from TLS 1.2, to negotiate which signature algorithm to use during the + TLS handshake. If no lower TLS versions than 1.2 are supported, + the client will send a TLS signature algorithm extension + with the algorithms specified by this option. + Defaults to + + <code>[ +%% SHA2 +{sha512, ecdsa}, +{sha512, rsa}, +{sha384, ecdsa}, +{sha384, rsa}, +{sha256, ecdsa}, +{sha256, rsa}, +{sha224, ecdsa}, +{sha224, rsa}, +%% SHA +{sha, ecdsa}, +{sha, rsa}, +{sha, dsa}, +%% MD5 +{md5, rsa} +]</code> + + The algorithms should be in the preferred order. + Selected signature algorithm can restrict which hash functions + that may be selected. + </p> + </item> + </taglist> </section> - + <section> <title>SSL OPTION DESCRIPTIONS - SERVER SIDE</title> @@ -635,14 +654,14 @@ fun(srp, Username :: string(), UserState :: term()) -> <tag><c>{sni_hosts, [{hostname(), ssloptions()}]}</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 speicific options for + 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 retrive <c>ssloptions()</c> for indicated server. + the given function will be called to retrieve <c>ssloptions()</c> for the indicated server. These options will be merged into predefined <c>ssloptions()</c>. The function should be defined as: @@ -656,22 +675,25 @@ fun(srp, Username :: string(), UserState :: term()) -> 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 stricly disabled by setting + 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>{psk_identity, string()}</c></tag> - <item>Specifies the server identity hint the server presents to the client. - </item> - <tag><c>{log_alert, boolean()}</c></tag> - <item>If false, error reports will not be displayed.</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>{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> + </taglist> </section> @@ -770,18 +792,20 @@ fun(srp, Username :: string(), UserState :: term()) -> </func> <func> - <name>connection_info(SslSocket) -> - {ok, {ProtocolVersion, CipherSuite}} | {error, Reason}</name> - <fsummary>Returns the Negotiated Protocol version and cipher suite. - </fsummary> + <name>close(SslSocket, How) -> ok | {ok, port()} | {error, Reason}</name> + <fsummary>Closes an SSL connection.</fsummary> <type> - <v>CipherSuite = ciphersuite()</v> - <v>ProtocolVersion = protocol()</v> + <v>SslSocket = sslsocket()</v> + <v>How = timeout() | {NewController::pid(), timeout()} </v> + <v>Reason = term()</v> </type> - <desc><p>Returns the Negotiated Protocol version and cipher suite.</p> + <desc><p>Closes or downgrades an SSL 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> </desc> </func> - + <func> <name>controlling_process(SslSocket, NewOwner) -> ok | {error, Reason}</name> @@ -800,40 +824,36 @@ fun(srp, Username :: string(), UserState :: term()) -> <func> <name>connection_information(SslSocket) -> - {ok, Info} | {error, Reason} </name> + {ok, Result} | {error, Reason} </name> <fsummary>Returns all the connection information. </fsummary> <type> - <v>Info = [InfoTuple]</v> - <v>InfoTuple = {protocol, Protocol} | {cipher_suite, CipherSuite} | {sni_hostname, SNIHostname}</v> - <v>CipherSuite = ciphersuite()</v> - <v>ProtocolVersion = protocol()</v> - <v>SNIHostname = string()</v> + <v>Item = protocol | cipher_suite | sni_hostname | 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>Return all the connection information containing negotiated protocol version, cipher suite, and the hostname of SNI extension. - Info will be a proplists containing all the connection information on success, otherwise <c>{error, Reason}</c> will be returned.</p> + <desc><p>Returns all relevant information about the connection, ssl options that + are undefined will be filtered out.</p> </desc> </func> <func> <name>connection_information(SslSocket, Items) -> - {ok, Info} | {error, Reason} </name> + {ok, Result} | {error, Reason} </name> <fsummary>Returns the requested connection information. </fsummary> <type> - <v>Items = [Item]</v> - <v>Item = protocol | cipher_suite | sni_hostname</v> - <v>Info = [InfoTuple]</v> - <v>InfoTuple = {protocol, Protocol} | {cipher_suite, CipherSuite} | {sni_hostname, SNIHostname}</v> - <v>CipherSuite = ciphersuite()</v> - <v>ProtocolVersion = protocol()</v> - <v>SNIHostname = string()</v> + <v>Items = [Item]</v> + <v>Item = protocol | cipher_suite | sni_hostname | 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 connection information you requested. The connection information you can request contains protocol, cipher_suite, and sni_hostname. - <c>{ok, Info}</c> will be returned if it executes sucessfully. The Info is a proplists containing the information you requested. - Otherwise, <c>{error, Reason}</c> will be returned.</p> + <desc><p>Returns the requested information items about the connection, + if they are defined.</p> + <note><p>If only undefined options are requested the + resulting list can be empty.</p></note> </desc> </func> @@ -1160,7 +1180,7 @@ fun(srp, Username :: string(), UserState :: term()) -> <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_info-1">ssl:connection_info/1 + marker="#connection_information-1">ssl:connection_information/1 </seealso>.</item> <tag><c>available</c></tag> diff --git a/lib/ssl/doc/src/ssl_app.xml b/lib/ssl/doc/src/ssl_app.xml index 2b6dc7e8be..6c82e32a74 100644 --- a/lib/ssl/doc/src/ssl_app.xml +++ b/lib/ssl/doc/src/ssl_app.xml @@ -33,7 +33,33 @@ <appsummary>The ssl application provides secure communication over sockets.</appsummary> - <description></description> + <description> + <p> + The ssl application is an implementation of the SSL/TLS 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>For security reasons SSL-3.0 is no longer supported by default, + but can be configured.</item> + <item>Ephemeral Diffie-Hellman cipher suites are supported, + but not Diffie Hellman Certificates cipher suites.</item> + <item>Elliptic Curve cipher suites are supported if the Crypto + application supports it and named curves are used. + </item> + <item>Export cipher suites are not supported as the + U.S. lifted its export restrictions in early 2000.</item> + <item>IDEA cipher suites are not supported as they have + become deprecated by the latest TLS specification so it is not + motivated to implement them.</item> + <item>CRL validation is supported.</item> + <item>Policy certificate extensions are not supported.</item> + <item>'Server Name Indication' extension client side + (RFC 6066, Section 3) is supported.</item> + </list> + </description> + <section> <title>DEPENDENCIES</title> <p>The SSL application uses the <c>public_key</c> and @@ -58,7 +84,7 @@ <p><c>erl -ssl protocol_version "['tlsv1.2', 'tlsv1.1']"</c></p> <taglist> - <tag><c><![CDATA[protocol_version = <seealso marker="kernel:error_logger">ssl:protocol()</seealso> <optional>]]></c>.</tag> + <tag><c>protocol_version = </c><seealso marker="ssl#type-protocol">ssl: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. @@ -66,17 +92,24 @@ 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>Lifetime of the session data in seconds.</p></item> + <item><p>Maximum lifetime of the session data in seconds.</p></item> <tag><c><![CDATA[session_cb = atom() <optional>]]></c></tag> <item><p>Name of the session cache callback module that implements the <c>ssl_session_cache_api</c> behavior. Defaults to - <c>ssl_session_cache.erl</c>.</p></item> + <c>ssl_session_cache</c>.</p></item> <tag><c><![CDATA[session_cb_init_args = proplist:proplist() <optional>]]></c></tag> <item><p>List of extra user-defined arguments to the <c>init</c> function in the session cache callback module. Defaults to <c>[]</c>.</p></item> + + <tag><c><![CDATA[session_cache_client_max = integer() <optional>]]></c><br/> + <c><![CDATA[session_cache_server_max = integer() <optional>]]></c></tag> + <item><p>Limits the growth of the clients/servers session cache, + 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> <tag><c><![CDATA[ssl_pem_cache_clean = integer() <optional>]]></c></tag> <item> @@ -87,12 +120,26 @@ marker="ssl#clear_pem_cache-0">ssl:clear_pem_cache/0</seealso> </item> + <tag><c><![CDATA[alert_timeout = integer() <optional>]]></c></tag> + <item> + <p> + Number of milliseconds between sending of a fatal alert and + closing the connection. Waiting a little while improves the + peers chances to properly receiving the alert so it may + shutdown gracefully. Defaults to 5000 milliseconds. + </p> + </item> + + </taglist> </section> <section> <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 turned off with the <c>log_alert</c> option. </p> + <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 + turned off with the <c>log_alert</c> option. </p> </section> <section> diff --git a/lib/ssl/doc/src/ssl_crl_cache_api.xml b/lib/ssl/doc/src/ssl_crl_cache_api.xml index 71c1c61fe8..03ac010bfe 100644 --- a/lib/ssl/doc/src/ssl_crl_cache_api.xml +++ b/lib/ssl/doc/src/ssl_crl_cache_api.xml @@ -84,9 +84,9 @@ <v> CRLs = [<seealso marker="public_key:public_key">public_key:der_encoded()</seealso>] </v> </type> - <desc> <p>Lookup the CRLs belonging to the distribution point <c> Distributionpoint</c>. </p> + <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 - links depending on how the cache is administrated. + links depending on how the cache is administrated. </p> </desc> </func> @@ -103,4 +103,4 @@ </desc> </func> </funcs> -</erlref>
\ No newline at end of file +</erlref> diff --git a/lib/ssl/doc/src/ssl_distribution.xml b/lib/ssl/doc/src/ssl_distribution.xml index a347ce5ae6..dc04d446b0 100644 --- a/lib/ssl/doc/src/ssl_distribution.xml +++ b/lib/ssl/doc/src/ssl_distribution.xml @@ -271,4 +271,27 @@ Eshell V5.0 (abort with ^G) <p>The <c>init:get_arguments()</c> call verifies that the correct arguments are supplied to the emulator.</p> </section> + + <section> + <title>Using SSL distribution over IPv6</title> + <p>It is possible to use SSL 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 + variable.</p> + + <p>An example command line with this option would look like this:</p> + <code type="none"> +$ erl -boot /home/me/ssl/start_ssl -proto_dist inet6_tls + -ssl_dist_opt server_certfile "/home/me/ssl/erlserver.pem" + -ssl_dist_opt server_secure_renegotiate true client_secure_renegotiate true + -sname ssl_test +Erlang (BEAM) emulator version 5.0 [source] + +Eshell V5.0 (abort with ^G) +(ssl_test@myhost)1> </code> + + <p>A node started in this way will only be able to communicate with + other nodes using SSL distribution over IPv6.</p> + </section> </chapter> diff --git a/lib/ssl/doc/src/ssl_session_cache_api.xml b/lib/ssl/doc/src/ssl_session_cache_api.xml index bd9330056d..b85d8fb284 100644 --- a/lib/ssl/doc/src/ssl_session_cache_api.xml +++ b/lib/ssl/doc/src/ssl_session_cache_api.xml @@ -31,9 +31,13 @@ <module>ssl_session_cache_api</module> <modulesummary>TLS session cache API</modulesummary> - <description>Defines the API for the TLS session cache so - that the data storage scheme can be replaced by - defining a new callback module implementing this API.</description> + <description> + <p> + Defines the API for the TLS session cache so + that the data storage scheme can be replaced by + defining a new callback module implementing this API. + </p> + </description> <section> <title>DATA TYPES</title> |