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 OpenSSL CHANGES
 Changes between 1.0.2 and 1.1.0  [xx XXX xxxx]
  *) Given the pervasive nature of TLS extensions it is inadvisable to run
     OpenSSL without support for them. It also means that maintaining
     the OPENSSL_NO_TLSEXT option within the code is very invasive (and probably
     not well tested). Therefore the OPENSSL_NO_TLSEXT option has been removed.
     [Matt Caswell]

  *) Version negotiation has been rewritten. In particular SSLv23_method(),
     SSLv23_client_method() and SSLv23_server_method() have been deprecated,
     and turned into macros which simply call the new preferred function names
     TLS_method(), TLS_client_method() and TLS_server_method(). All new code
     should use the new names instead. Also as part of this change the ssl23.h
     header file has been removed.
     [Matt Caswell]

  *) Support for Kerberos ciphersuites in TLS (RFC2712) has been removed. This
     code and the associated standard is no longer considered fit-for-purpose.
     [Matt Caswell]
  *) Added HTTP GET support to the ocsp command.
     [Rich Salz]

  *) RAND_pseudo_bytes has been deprecated. Users should use RAND_bytes instead.
     [Matt Caswell]
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  *) Added support for TLS extended master secret from
     draft-ietf-tls-session-hash-03.txt. Thanks for Alfredo Pironti for an
     initial patch which was a great help during development.
     [Steve Henson]

  *) All libssl internal structures have been removed from the public header
     files, and the OPENSSL_NO_SSL_INTERN option has been removed (since it is
     now redundant). Users should not attempt to access internal structures
     directly. Instead they should use the provided API functions.
     [Matt Caswell]
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  *) config has been changed so that by default OPENSSL_NO_DEPRECATED is used.
     Access to deprecated functions can be re-enabled by running config with
     "enable-deprecated". In addition applications wishing to use deprecated
     functions must define OPENSSL_USE_DEPRECATED. Note that this new behaviour
     will, by default, disable some transitive includes that previously existed
     in the header files (e.g. ec.h will no longer, by default, include bn.h)
     [Matt Caswell]

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  *) Added support for OCB mode. OpenSSL has been granted a patent license
     compatible with the OpenSSL license for use of OCB. Details are available
     at https://www.openssl.org/docs/misc/OCB-patent-grant-OpenSSL.pdf. Support
     for OCB can be removed by calling config with no-ocb.
     [Matt Caswell]
  *) SSLv2 support has been removed.  It still supports receiving a SSLv2
     compatible client hello.
     [Kurt Roeckx]

  *) Increased the minimal RSA keysize from 256 to 512 bits [Rich Salz],
     done while fixing the error code for the key-too-small case.
     [Annie Yousar <a.yousar@informatik.hu-berlin.de>]

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  *) CA.sh has been removmed; use CA.pl instead.
     [Rich Salz]

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  *) Removed old DES API.
     [Rich Salz]

  *) Remove various unsupported platforms:
        Sony NEWS4
        BEOS and BEOS_R5
        NeXT
        SUNOS
        MPE/iX
        Sinix/ReliantUNIX RM400
        DGUX
        NCR
        Tandem
        Cray
        16-bit platforms such as WIN16
  *) Clean up OPENSSL_NO_xxx #define's
        Use setbuf() and remove OPENSSL_NO_SETVBUF_IONBF
        Rename OPENSSL_SYSNAME_xxx to OPENSSL_SYS_xxx
        OPENSSL_NO_EC{DH,DSA} merged into OPENSSL_NO_EC
        OPENSSL_NO_RIPEMD160, OPENSSL_NO_RIPEMD merged into OPENSSL_NO_RMD160
        OPENSSL_NO_FP_API merged into OPENSSL_NO_STDIO
        Remove OPENSSL_NO_BIO OPENSSL_NO_BUFFER OPENSSL_NO_CHAIN_VERIFY
        OPENSSL_NO_EVP OPENSSL_NO_FIPS_ERR OPENSSL_NO_HASH_COMP
        OPENSSL_NO_LHASH OPENSSL_NO_OBJECT OPENSSL_NO_SPEED OPENSSL_NO_STACK
        OPENSSL_NO_X509 OPENSSL_NO_X509_VERIFY
        Remove MS_STATIC; it's a relic from platforms <32 bits.
     [Rich Salz]

  *) Cleaned up dead code
        Remove all but one '#ifdef undef' which is to be looked at.
     [Rich Salz]

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  *) Clean up calling of xxx_free routines.
        Just like free(), fix most of the xxx_free routines to accept
        NULL.  Remove the non-null checks from callers.  Save much code.
     [Rich Salz]

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  *) Experimental support for a new, fast, unbiased prime candidate generator,
     bn_probable_prime_dh_coprime(). Not currently used by any prime generator.
     [Felix Laurie von Massenbach <felix@erbridge.co.uk>]

  *) New output format NSS in the sess_id command line tool. This allows
     exporting the session id and the master key in NSS keylog format.
     [Martin Kaiser <martin@kaiser.cx>]

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  *) Harmonize version and its documentation. -f flag is used to display
     compilation flags.
     [mancha <mancha1@zoho.com>]

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  *) Fix eckey_priv_encode so it immediately returns an error upon a failure
     in i2d_ECPrivateKey.
     [mancha <mancha1@zoho.com>]

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  *) Fix some double frees. These are not thought to be exploitable.
     [mancha <mancha1@zoho.com>]

  *) A missing bounds check in the handling of the TLS heartbeat extension
     can be used to reveal up to 64k of memory to a connected client or
     server.

     Thanks for Neel Mehta of Google Security for discovering this bug and to
     Adam Langley <agl@chromium.org> and Bodo Moeller <bmoeller@acm.org> for
     preparing the fix (CVE-2014-0160)
     [Adam Langley, Bodo Moeller]

  *) Fix for the attack described in the paper "Recovering OpenSSL
     ECDSA Nonces Using the FLUSH+RELOAD Cache Side-channel Attack"
     by Yuval Yarom and Naomi Benger. Details can be obtained from:
     http://eprint.iacr.org/2014/140

     Thanks to Yuval Yarom and Naomi Benger for discovering this
     flaw and to Yuval Yarom for supplying a fix (CVE-2014-0076)
     [Yuval Yarom and Naomi Benger]

  *) Use algorithm specific chains in SSL_CTX_use_certificate_chain_file():
     this fixes a limitation in previous versions of OpenSSL.
  *) Experimental encrypt-then-mac support.
    
     Experimental support for encrypt then mac from
     draft-gutmann-tls-encrypt-then-mac-02.txt
     To enable it set the appropriate extension number (0x42 for the test
     server) using e.g. -DTLSEXT_TYPE_encrypt_then_mac=0x42
     For non-compliant peers (i.e. just about everything) this should have no
     effect.

     WARNING: EXPERIMENTAL, SUBJECT TO CHANGE.
  *) Add EVP support for key wrapping algorithms, to avoid problems with
     existing code the flag EVP_CIPHER_CTX_WRAP_ALLOW has to be set in
     the EVP_CIPHER_CTX or an error is returned. Add AES and DES3 wrap
     algorithms and include tests cases.
     [Steve Henson]

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  *) Extend CMS code to support RSA-PSS signatures and RSA-OAEP for
     enveloped data.
     [Steve Henson]

  *) Extended RSA OAEP support via EVP_PKEY API. Options to specify digest,
     MGF1 digest and OAEP label.
     [Steve Henson]

  *) Make openssl verify return errors.
     [Chris Palmer <palmer@google.com> and Ben Laurie]

  *) New function ASN1_TIME_diff to calculate the difference between two
     ASN1_TIME structures or one structure and the current time.
     [Steve Henson]

  *) Update fips_test_suite to support multiple command line options. New
     test to induce all self test errors in sequence and check expected
     failures.
     [Steve Henson]

  *) Add FIPS_{rsa,dsa,ecdsa}_{sign,verify} functions which digest and
     sign or verify all in one operation.
     [Steve Henson]

  *) Add fips_algvs: a multicall fips utility incorporating all the algorithm
     test programs and fips_test_suite. Includes functionality to parse
     the minimal script output of fipsalgest.pl directly.
  *) Add authorisation parameter to FIPS_module_mode_set().
     [Steve Henson]

  *) Add FIPS selftest for ECDH algorithm using P-224 and B-233 curves.
     [Steve Henson]
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