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add 2.6.1 changelog

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Brent Cook 2017-09-03 21:52:18 -05:00
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ChangeLog
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@ -28,6 +28,59 @@ history is also available from Git.
LibreSSL Portable Release Notes:
2.6.1 - Code removal, rewrites
* Added a "-T tlscompat" option to nc(1), which enables the use of all
TLS protocols and "compat" ciphers. This allows for TLS connections
to TLS servers that are using less than ideal cipher suites, without
having to resort to "-T tlsall" which enables all known cipher
suites. Diff from Kyle J. McKay.
* Added a new TLS extension handling framework, somewhat analogous to
BoringSSL, and converted all TLS extensions to use it. Added new TLS
extension regression tests.
* Improved and added many new manpages. Updated *check_private_key
manpages with additional cautions regarding their use.
* Cleaned up the EC key/curve configuration handling.
* Added tls_config_set_ecdhecurves() to libtls, which allows the names
of the eliptical curves that may be used during client and server
key exchange to be specified.
* Converted more code paths to use CBB/CBS.
* Removed support for DSS/DSA, since we removed the cipher suites a
while back.
* Removed NPN support. NPN was never standardised and the last draft
expired in October 2012. ALPN was standardised in July 2014 and has
been supported in LibreSSL since December 2014. NPN has also been
removed from Chromium in May 2016.
* Removed SSL_OP_CRYPTOPRO_TLSEXT_BUG workaround for old/broken
CryptoPro clients.
* Removed support for the TLS padding extension, which was added as a
workaround for an old bug in F5's TLS termintation.
* Workaround a new bug in F5's TLS termination handling the
elliptical curves extension. RFC 4492 only defines elliptic_curves
for ClientHello. However, F5 is sending it in ServerHello. We need
to skip over it since our TLS extension parsing code is now more
strict. Thanks to Armin Wolfermann and WJ Liu for reporting.
* Added ability to clamp notafter valies in certificates for systems
with 32-bit time_t. This is necessary to conform to RFC 5280
4.1.2.5.
* Imported SSL_CTX_set_min_proto_version(3) from OpenSSL
* Remove the original (pre-IETF) chacha20-poly1305 cipher suites.
* Reclassified ECDHE-RSA-DES-CBC3-SHA from HIGH to MEDIUM.
2.6.0 - New APIs, bug fixes and improvements
* Added support for providing CRLs to libtls. Once a CRL is provided we