Simplify and fix ec_GFp_simple_points_make_affine

[thirdparty/openssl.git] / CHANGES

 OpenSSL CHANGES
 _______________

 Changes between 1.0.1h and 1.0.2 [xx XXX xxxx]

  *) Fix ec_GFp_simple_points_make_affine (thus, EC_POINTs_mul etc.)
     for corner cases. (Certain input points at infinity could lead to
     bogus results, with non-infinity inputs mapped to infinity too.)
     [Bodo Moeller]

  *) Initial support for PowerISA 2.0.7, first implemented in POWER8.
     This covers AES, SHA256/512 and GHASH. "Initial" means that most
     common cases are optimized and there still is room for further
     improvements. Vector Permutation AES for Altivec is also added.
     [Andy Polyakov]

  *) Add support for little-endian ppc64 Linux target.
     [Marcelo Cerri (IBM)]

  *) Initial support for AMRv8 ISA crypto extensions. This covers AES,
     SHA1, SHA256 and GHASH. "Initial" means that most common cases
     are optimized and there still is room for further improvements.
     Both 32- and 64-bit modes are supported.
     [Andy Polyakov, Ard Biesheuvel (Linaro)]

  *) Improved ARMv7 NEON support.
     [Andy Polyakov]

  *) Support for SPARC Architecture 2011 crypto extensions, first
     implemented in SPARC T4. This covers AES, DES, Camellia, SHA1,
     SHA256/512, MD5, GHASH and modular exponentiation.
     [Andy Polyakov, David Miller]

  *) Accelerated modular exponentiation for Intel processors, a.k.a.
     RSAZ.
     [Shay Gueron (Intel Corp)]

  *) Support for new and upcoming Intel processors, including AVX2,
     BMI and SHA ISA extensions. This includes additional "stitched"
     implementations, AESNI-SHA256 and GCM, and multi-buffer support
     for TLS encrypt.

     This work was sponsored by Intel Corp.
     [Andy Polyakov]

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

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

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

  *) Use algorithm specific chains in SSL_CTX_use_certificate_chain_file():
     this fixes a limiation in previous versions of OpenSSL.
     [Steve Henson]

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

  *) 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]

  *) Add functions to allocate and set the fields of an ECDSA_METHOD
     structure.
     [Douglas E. Engert, Steve Henson]

  *) Add option SSL_OP_SAFARI_ECDHE_ECDSA_BUG (part of SSL_OP_ALL) which
     avoids preferring ECDHE-ECDSA ciphers when the client appears to be
     Safari on OS X.  Safari on OS X 10.8..10.8.3 advertises support for
     several ECDHE-ECDSA ciphers, but fails to negotiate them.  The bug
     is fixed in OS X 10.8.4, but Apple have ruled out both hot fixing
     10.8..10.8.3 and forcing users to upgrade to 10.8.4 or newer.
     [Rob Stradling, Adam Langley]

  *) New functions OPENSSL_gmtime_diff and ASN1_TIME_diff to find the
     difference in days and seconds between two tm or ASN1_TIME structures.
     [Steve Henson]

  *) Add -rev test option to s_server to just reverse order of characters
     received by client and send back to server. Also prints an abbreviated
     summary of the connection parameters.
     [Steve Henson]

  *) New option -brief for s_client and s_server to print out a brief summary
     of connection parameters.
     [Steve Henson]

  *) Add callbacks for arbitrary TLS extensions.
     [Trevor Perrin <trevp@trevp.net> and Ben Laurie]

  *) New option -crl_download in several openssl utilities to download CRLs
     from CRLDP extension in certificates.
     [Steve Henson]

  *) New options -CRL and -CRLform for s_client and s_server for CRLs.
     [Steve Henson]

  *) New function X509_CRL_diff to generate a delta CRL from the difference
     of two full CRLs. Add support to "crl" utility.
     [Steve Henson]

  *) New functions to set lookup_crls function and to retrieve
     X509_STORE from X509_STORE_CTX.
     [Steve Henson]

  *) Print out deprecated issuer and subject unique ID fields in
     certificates.
     [Steve Henson]

  *) Extend OCSP I/O functions so they can be used for simple general purpose
     HTTP as well as OCSP. New wrapper function which can be used to download
     CRLs using the OCSP API.
     [Steve Henson]

  *) Delegate command line handling in s_client/s_server to SSL_CONF APIs.
     [Steve Henson]

  *) SSL_CONF* functions. These provide a common framework for application
     configuration using configuration files or command lines.
     [Steve Henson]

  *) SSL/TLS tracing code. This parses out SSL/TLS records using the
     message callback and prints the results. Needs compile time option
     "enable-ssl-trace". New options to s_client and s_server to enable
     tracing.
     [Steve Henson]

  *) New ctrl and macro to retrieve supported points extensions.
     Print out extension in s_server and s_client.
     [Steve Henson]

  *) New functions to retrieve certificate signature and signature
     OID NID.
     [Steve Henson]

  *) Add functions to retrieve and manipulate the raw cipherlist sent by a
     client to OpenSSL.
     [Steve Henson]

  *) New Suite B modes for TLS code. These use and enforce the requirements
     of RFC6460: restrict ciphersuites, only permit Suite B algorithms and
     only use Suite B curves. The Suite B modes can be set by using the
     strings "SUITEB128", "SUITEB192" or "SUITEB128ONLY" for the cipherstring.
     [Steve Henson]

  *) New chain verification flags for Suite B levels of security. Check
     algorithms are acceptable when flags are set in X509_verify_cert.
     [Steve Henson]

  *) Make tls1_check_chain return a set of flags indicating checks passed
     by a certificate chain. Add additional tests to handle client
     certificates: checks for matching certificate type and issuer name
     comparison.
     [Steve Henson]

  *) If an attempt is made to use a signature algorithm not in the peer
     preference list abort the handshake. If client has no suitable
     signature algorithms in response to a certificate request do not
     use the certificate.
     [Steve Henson]

  *) If server EC tmp key is not in client preference list abort handshake.
     [Steve Henson]

  *) Add support for certificate stores in CERT structure. This makes it
     possible to have different stores per SSL structure or one store in
     the parent SSL_CTX. Include distint stores for certificate chain
     verification and chain building. New ctrl SSL_CTRL_BUILD_CERT_CHAIN
     to build and store a certificate chain in CERT structure: returing
     an error if the chain cannot be built: this will allow applications
     to test if a chain is correctly configured.

     Note: if the CERT based stores are not set then the parent SSL_CTX
     store is used to retain compatibility with existing behaviour.

     [Steve Henson]

  *) New function ssl_set_client_disabled to set a ciphersuite disabled
     mask based on the current session, check mask when sending client
     hello and checking the requested ciphersuite.
     [Steve Henson]

  *) New ctrls to retrieve and set certificate types in a certificate
     request message. Print out received values in s_client. If certificate
     types is not set with custom values set sensible values based on
     supported signature algorithms.
     [Steve Henson]

  *) Support for distinct client and server supported signature algorithms.
     [Steve Henson]

  *) Add certificate callback. If set this is called whenever a certificate
     is required by client or server. An application can decide which
     certificate chain to present based on arbitrary criteria: for example
     supported signature algorithms. Add very simple example to s_server.
     This fixes many of the problems and restrictions of the existing client
     certificate callback: for example you can now clear an existing
     certificate and specify the whole chain.
     [Steve Henson]

  *) Add new "valid_flags" field to CERT_PKEY structure which determines what
     the certificate can be used for (if anything). Set valid_flags field 
     in new tls1_check_chain function. Simplify ssl_set_cert_masks which used
     to have similar checks in it.

     Add new "cert_flags" field to CERT structure and include a "strict mode".
     This enforces some TLS certificate requirements (such as only permitting
     certificate signature algorithms contained in the supported algorithms
     extension) which some implementations ignore: this option should be used
     with caution as it could cause interoperability issues.
     [Steve Henson]

  *) Update and tidy signature algorithm extension processing. Work out
     shared signature algorithms based on preferences and peer algorithms
     and print them out in s_client and s_server. Abort handshake if no
     shared signature algorithms.
     [Steve Henson]

  *) Add new functions to allow customised supported signature algorithms
     for SSL and SSL_CTX structures. Add options to s_client and s_server
     to support them.
     [Steve Henson]

  *) New function SSL_certs_clear() to delete all references to certificates
     from an SSL structure. Before this once a certificate had been added
     it couldn't be removed.
     [Steve Henson]

  *) Integrate hostname, email address and IP address checking with certificate
     verification. New verify options supporting checking in opensl utility.
     [Steve Henson]

  *) Fixes and wildcard matching support to hostname and email checking
     functions. Add manual page.
     [Florian Weimer (Red Hat Product Security Team)]

  *) New functions to check a hostname email or IP address against a
     certificate. Add options x509 utility to print results of checks against
     a certificate.
     [Steve Henson]

  *) Fix OCSP checking.
     [Rob Stradling <rob.stradling@comodo.com> and Ben Laurie]

  *) Initial experimental support for explicitly trusted non-root CAs. 
     OpenSSL still tries to build a complete chain to a root but if an
     intermediate CA has a trust setting included that is used. The first
     setting is used: whether to trust (e.g., -addtrust option to the x509
     utility) or reject.
     [Steve Henson]

  *) Add -trusted_first option which attempts to find certificates in the
     trusted store even if an untrusted chain is also supplied.
     [Steve Henson]

  *) MIPS assembly pack updates: support for MIPS32r2 and SmartMIPS ASE,
     platform support for Linux and Android.
     [Andy Polyakov]

  *) Support for linux-x32, ILP32 environment in x86_64 framework.
     [Andy Polyakov]

  *) Experimental multi-implementation support for FIPS capable OpenSSL.
     When in FIPS mode the approved implementations are used as normal,
     when not in FIPS mode the internal unapproved versions are used instead.
     This means that the FIPS capable OpenSSL isn't forced to use the
     (often lower perfomance) FIPS implementations outside FIPS mode.
     [Steve Henson]

  *) Transparently support X9.42 DH parameters when calling
     PEM_read_bio_DHparameters. This means existing applications can handle
     the new parameter format automatically.
     [Steve Henson]

  *) Initial experimental support for X9.42 DH parameter format: mainly
     to support use of 'q' parameter for RFC5114 parameters.
     [Steve Henson]

  *) Add DH parameters from RFC5114 including test data to dhtest.
     [Steve Henson]

  *) Support for automatic EC temporary key parameter selection. If enabled
     the most preferred EC parameters are automatically used instead of
     hardcoded fixed parameters. Now a server just has to call:
     SSL_CTX_set_ecdh_auto(ctx, 1) and the server will automatically
     support ECDH and use the most appropriate parameters.
     [Steve Henson]

  *) Enhance and tidy EC curve and point format TLS extension code. Use
     static structures instead of allocation if default values are used.
     New ctrls to set curves we wish to support and to retrieve shared curves.
     Print out shared curves in s_server. New options to s_server and s_client
     to set list of supported curves.
     [Steve Henson]

  *) New ctrls to retrieve supported signature algorithms and 
     supported curve values as an array of NIDs. Extend openssl utility
     to print out received values.
     [Steve Henson]

  *) Add new APIs EC_curve_nist2nid and EC_curve_nid2nist which convert
     between NIDs and the more common NIST names such as "P-256". Enhance
     ecparam utility and ECC method to recognise the NIST names for curves.
     [Steve Henson]

  *) Enhance SSL/TLS certificate chain handling to support different
     chains for each certificate instead of one chain in the parent SSL_CTX.
     [Steve Henson]

  *) Support for fixed DH ciphersuite client authentication: where both
     server and client use DH certificates with common parameters.
     [Steve Henson]

  *) Support for fixed DH ciphersuites: those requiring DH server
     certificates.
     [Steve Henson]

 Changes between 1.0.1g and 1.0.1h [5 Jun 2014]

  *) Fix for SSL/TLS MITM flaw. An attacker using a carefully crafted
     handshake can force the use of weak keying material in OpenSSL
     SSL/TLS clients and servers.

     Thanks to KIKUCHI Masashi (Lepidum Co. Ltd.) for discovering and
     researching this issue. (CVE-2014-0224)
     [KIKUCHI Masashi, Steve Henson]

  *) Fix DTLS recursion flaw. By sending an invalid DTLS handshake to an
     OpenSSL DTLS client the code can be made to recurse eventually crashing
     in a DoS attack.

     Thanks to Imre Rad (Search-Lab Ltd.) for discovering this issue.
     (CVE-2014-0221)
     [Imre Rad, Steve Henson]

  *) Fix DTLS invalid fragment vulnerability. A buffer overrun attack can
     be triggered by sending invalid DTLS fragments to an OpenSSL DTLS
     client or server. This is potentially exploitable to run arbitrary
     code on a vulnerable client or server.