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The Key Usage extension is described in section 4.2.1.3 of X.509, with the following possible flags:
KeyUsage ::= BIT STRING {
digitalSignature (0),
nonRepudiation (1), -- recent editions of X.509 have
-- renamed this bit to contentCommitment
keyEncipherment (2),
dataEncipherment (3),
keyAgreement (4),
keyCertSign (5),
cRLSign (6),
encipherOnly (7),
decipherOnly (8) }
In SSL/TLS, when the server certificate contains a RSA key, then:
either a DHE or ECDHE cipher suite is used, in which case the RSA key
is used for a signature (see section 7.4.3 of RFC 5246: the "Server
Key Exchange" message); this exercises the digitalSignature key usage;
or "plain RSA" is used, with a random value (the 48-byte pre-master
secret) being encrypted by the client with the server's public key
(see section 7.4.7.1 of RFC 5246); this is right in the definition of
the keyEncipherment key usage flag.
dataEncipherment does not apply, because what is encrypted is not
directly meaningful data, but a value which is mostly generated
randomly and used to derive symmetric keys. keyAgreement does not
apply either, because that one is for key agreement algorithms which
are not a case of asymmetric encryption (e.g. Diffie-Hellman). The
keyAgreement usage flag would appear in a certificate which contains a
DH key, not a RSA key. nonRepudiation is not used, because whatever is
signed as part of a SSL/TLS key exchange cannot be used as proof for a
third party (there is nothing in a SSL/TLS tunnel that the client
could record and then use to convince a judge when tring to sue the
server itself; the data which is exchanged within the tunnel is not
signed by the server).
When a ECDSA key is used then "keyAgreement" flag is needed for beeing
ECDH "capable" (as opposed to ephemeral ECDHE)
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ECDH suite handling did not use the EC parameters form the certs
as expected.
Conflicts:
lib/ssl/src/ssl_cipher.erl
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Fix test case code to use keyAgreement for ECDH_ECDSA
Conflicts:
lib/ssl/test/ssl_ECC.erl
lib/ssl/test/ssl_ECC_openssl_SUITE.erl
lib/ssl/test/ssl_to_openssl_SUITE.erl
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When test handling was corrected it was obvious that DTLS ECC handling
was not compleated.
Conflicts:
lib/ssl/src/ssl.erl
lib/ssl/test/Makefile
lib/ssl/test/ssl_ECC.erl
lib/ssl/test/ssl_ECC_SUITE.erl
lib/ssl/test/ssl_ECC_openssl_SUITE.erl
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into maint-20
* john/erts/fix-process-schedule-after-free/OTP-15067/ERL-573:
Don't enqueue system tasks if target process is in fail_state
Fix erroneous schedule of freed/exiting processes
Fix deadlock in run queue evacuation
Fix memory leak of processes that died in the run queue
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* sverker/ic/encode-atom-overrun/ERIERL-191/OTP-15160:
ic: Fix buffer overrun bug in oe_ei_encode_atom
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maint-20
* sverker/erl_interface/simultaneous-connect/OTP-15161:
erl_interface: Fix simultaneous connection setup
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* sverker/kernel/tick-fixes/OTP-15162:
kernel: Fix tick count bug when pending writes
kernel: Send tick to hidden node even if pending writes
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as c-nodes need ticks to send ticks.
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bug exists since OTP-20.3.4
1d3acb70debd134c8346b7e98347171d5cf6fc62
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* hans/ssh/sftp_ver4_xfer/ERIERL-199/OTP-15149:
ssh: Fix ssh_xfer decode_ATTR error for Vsn=4
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* hans/ssh/sftp_error_codes/ERIERL-194/OTP-15148:
ssh: Report the signal name if there is an exit-signal to sftpd
ssh: Bug fix sftp error codes
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maint-20
* hasse/syntax_tools/fix_map_type/OTP-15098/ERIERL-177:
syntax_tools: Fix a bug regarding reverting map types.
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* hans/ftp/socket_opts/ERIERL-192/OTP-15120:
ftp: Disallow 'packet_size' for low-level options
ftp: Socket options
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Report the signal name if the signal error message is ""
Do not report a return code of 0 as an error.
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by also accepting status "ok_simultaneous".
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The fail state wasn't re-checked in the state change loop; only
the FREE state was checked. In addition to that, we would leave
the task in the queue when bailing out which could lead to a
double-free.
This commit backports active_sys_enqueue from master to make it
easier to merge onwards.
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When scheduled out, the process was never checked for the FREE state
before rescheduling, which meant that a system task could sneak in
and cause a double-free later on.
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maint-20
* raimo/snmp/parse-mc_new_type-first/ERIERL-161/OTP-14196:
Add test case
Parse #mc_new_type{}s before definitions_loop/2
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* sverker/ets-auto-unfix-delete-race/OTP-15109:
erts: Fix race between ets table deletion and auto-unfix
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* ingela/inets/header-handling/OTP-15092:
inets: Gracefully handle bad headers
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* lars/erl_docgen/fix-xsl-makefile/OTP-15091:
[erl_docgen] Update version
[erl_docgen] Add missing file db_funcs.xsl to file list
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* sverker/system-profile-bug/OTP-15085:
erts: Fix bug in system_profile
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* sverker/enif_binary_to_term-bug/OTP-15080:
erts: Fix bug in enif_binary_to_term for immediates
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Problem:
1. Process A fixates table T.
2. Process B starts deleting table T (either by ets:delete or exit)
and does tid_clear().
3. Process A exits and does proc_cleanup_fixed_table()
and get NULL from btid2tab() and deallocates DbFixation.
4. Process B continues deleting table in free_fixations_locked()
and finds the deallocated DbFixation in the fixing_procs tree.
Solution:
Wait with tid_clear() until after free_fixations_locked()
has traversed the fixing_procs tree.
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max_headers operated on the individual header length instead of
the total length of all headers. Also headers with empty keys are
now discarded.
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seen to cause redundant {profile,_,active,_,_} messages
when process is terminating.
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Symptom: Heap corruption
Expanded test case to provoke this bug
and test some more term types.
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