+ Changes between 1.1.1a and 1.1.1b [xx XXX xxxx]
+
+ *) Added SCA hardening for modular field inversion in EC_GROUP through
+ a new dedicated field_inv() pointer in EC_METHOD.
+ This also addresses a leakage affecting conversions from projective
+ to affine coordinates.
+ [Billy Bob Brumley, Nicola Tuveri]
+
+ *) Change the info callback signals for the start and end of a post-handshake
+ message exchange in TLSv1.3. In 1.1.1/1.1.1a we used SSL_CB_HANDSHAKE_START
+ and SSL_CB_HANDSHAKE_DONE. Experience has shown that many applications get
+ confused by this and assume that a TLSv1.2 renegotiation has started. This
+ can break KeyUpdate handling. Instead we no longer signal the start and end
+ of a post handshake message exchange (although the messages themselves are
+ still signalled). This could break some applications that were expecting
+ the old signals. However without this KeyUpdate is not usable for many
+ applications.
+ [Matt Caswell]
+
+ *) Fix a bug in the computation of the endpoint-pair shared secret used
+ by DTLS over SCTP. This breaks interoperability with older versions
+ of OpenSSL like OpenSSL 1.1.0 and OpenSSL 1.0.2. There is a runtime
+ switch SSL_MODE_DTLS_SCTP_LABEL_LENGTH_BUG (off by default) enabling
+ interoperability with such broken implementations. However, enabling
+ this switch breaks interoperability with correct implementations.
+
+ *) Fix a use after free bug in d2i_X509_PUBKEY when overwriting a
+ re-used X509_PUBKEY object if the second PUBKEY is malformed.
+ [Bernd Edlinger]
+
+ *) Move strictness check from EVP_PKEY_asn1_new() to EVP_PKEY_asn1_add0().
+ [Richard Levitte]
+
+ *) Remove the 'dist' target and add a tarball building script. The
+ 'dist' target has fallen out of use, and it shouldn't be
+ necessary to configure just to create a source distribution.
+ [Richard Levitte]
+
+ Changes between 1.1.1 and 1.1.1a [20 Nov 2018]
+
+ *) Timing vulnerability in DSA signature generation
+
+ The OpenSSL DSA signature algorithm has been shown to be vulnerable to a
+ timing side channel attack. An attacker could use variations in the signing
+ algorithm to recover the private key.
+
+ This issue was reported to OpenSSL on 16th October 2018 by Samuel Weiser.
+ (CVE-2018-0734)
+ [Paul Dale]
+
+ *) Timing vulnerability in ECDSA signature generation
+
+ The OpenSSL ECDSA signature algorithm has been shown to be vulnerable to a
+ timing side channel attack. An attacker could use variations in the signing
+ algorithm to recover the private key.
+
+ This issue was reported to OpenSSL on 25th October 2018 by Samuel Weiser.
+ (CVE-2018-0735)
+ [Paul Dale]
+
+ *) Added EVP_PKEY_ECDH_KDF_X9_63 and ecdh_KDF_X9_63() as replacements for
+ the EVP_PKEY_ECDH_KDF_X9_62 KDF type and ECDH_KDF_X9_62(). The old names
+ are retained for backwards compatibility.
+ [Antoine Salon]
+
+ *) Fixed the issue that RAND_add()/RAND_seed() silently discards random input
+ if its length exceeds 4096 bytes. The limit has been raised to a buffer size
+ of two gigabytes and the error handling improved.
+
+ This issue was reported to OpenSSL by Dr. Falko Strenzke. It has been
+ categorized as a normal bug, not a security issue, because the DRBG reseeds
+ automatically and is fully functional even without additional randomness
+ provided by the application.
+
+ Changes between 1.1.0i and 1.1.1 [11 Sep 2018]
+
+ *) Add a new ClientHello callback. Provides a callback interface that gives
+ the application the ability to adjust the nascent SSL object at the
+ earliest stage of ClientHello processing, immediately after extensions have
+ been collected but before they have been processed. In particular, this
+ callback can adjust the supported TLS versions in response to the contents
+ of the ClientHello
+ [Benjamin Kaduk]
+
+ *) Add SM2 base algorithm support.
+ [Jack Lloyd]
+
+ *) s390x assembly pack: add (improved) hardware-support for the following
+ cryptographic primitives: sha3, shake, aes-gcm, aes-ccm, aes-ctr, aes-ofb,
+ aes-cfb/cfb8, aes-ecb.
+ [Patrick Steuer]
+
+ *) Make EVP_PKEY_asn1_new() a bit stricter about its input. A NULL pem_str
+ parameter is no longer accepted, as it leads to a corrupt table. NULL
+ pem_str is reserved for alias entries only.
+ [Richard Levitte]
+
+ *) Use the new ec_scalar_mul_ladder scaffold to implement a specialized ladder
+ step for prime curves. The new implementation is based on formulae from
+ differential addition-and-doubling in homogeneous projective coordinates
+ from Izu-Takagi "A fast parallel elliptic curve multiplication resistant
+ against side channel attacks" and Brier-Joye "Weierstrass Elliptic Curves
+ and Side-Channel Attacks" Eq. (8) for y-coordinate recovery, modified
+ to work in projective coordinates.
+ [Billy Bob Brumley, Nicola Tuveri]
+
+ *) Change generating and checking of primes so that the error rate of not
+ being prime depends on the intended use based on the size of the input.
+ For larger primes this will result in more rounds of Miller-Rabin.
+ The maximal error rate for primes with more than 1080 bits is lowered
+ to 2^-128.
+ [Kurt Roeckx, Annie Yousar]
+
+ *) Increase the number of Miller-Rabin rounds for DSA key generating to 64.
+ [Kurt Roeckx]
+
+ *) The 'tsget' script is renamed to 'tsget.pl', to avoid confusion when
+ moving between systems, and to avoid confusion when a Windows build is
+ done with mingw vs with MSVC. For POSIX installs, there's still a
+ symlink or copy named 'tsget' to avoid that confusion as well.
+ [Richard Levitte]
+
+ *) Revert blinding in ECDSA sign and instead make problematic addition
+ length-invariant. Switch even to fixed-length Montgomery multiplication.
+ [Andy Polyakov]
+
+ *) Use the new ec_scalar_mul_ladder scaffold to implement a specialized ladder
+ step for binary curves. The new implementation is based on formulae from
+ differential addition-and-doubling in mixed Lopez-Dahab projective
+ coordinates, modified to independently blind the operands.
+ [Billy Bob Brumley, Sohaib ul Hassan, Nicola Tuveri]
+
+ *) Add a scaffold to optionally enhance the Montgomery ladder implementation
+ for `ec_scalar_mul_ladder` (formerly `ec_mul_consttime`) allowing
+ EC_METHODs to implement their own specialized "ladder step", to take
+ advantage of more favorable coordinate systems or more efficient
+ differential addition-and-doubling algorithms.
+ [Billy Bob Brumley, Sohaib ul Hassan, Nicola Tuveri]
+
+ *) Modified the random device based seed sources to keep the relevant
+ file descriptors open rather than reopening them on each access.
+ This allows such sources to operate in a chroot() jail without
+ the associated device nodes being available. This behaviour can be
+ controlled using RAND_keep_random_devices_open().
+ [Paul Dale]
+
+ *) Numerous side-channel attack mitigations have been applied. This may have
+ performance impacts for some algorithms for the benefit of improved
+ security. Specific changes are noted in this change log by their respective
+ authors.
+ [Matt Caswell]
+
+ *) AIX shared library support overhaul. Switch to AIX "natural" way of
+ handling shared libraries, which means collecting shared objects of
+ different versions and bitnesses in one common archive. This allows to
+ mitigate conflict between 1.0 and 1.1 side-by-side installations. It
+ doesn't affect the way 3rd party applications are linked, only how
+ multi-version installation is managed.
+ [Andy Polyakov]
+
+ *) Make ec_group_do_inverse_ord() more robust and available to other
+ EC cryptosystems, so that irrespective of BN_FLG_CONSTTIME, SCA
+ mitigations are applied to the fallback BN_mod_inverse().
+ When using this function rather than BN_mod_inverse() directly, new
+ EC cryptosystem implementations are then safer-by-default.
+ [Billy Bob Brumley]
+
+ *) Add coordinate blinding for EC_POINT and implement projective
+ coordinate blinding for generic prime curves as a countermeasure to
+ chosen point SCA attacks.
+ [Sohaib ul Hassan, Nicola Tuveri, Billy Bob Brumley]
+
+ *) Add blinding to ECDSA and DSA signatures to protect against side channel
+ attacks discovered by Keegan Ryan (NCC Group).
+ [Matt Caswell]
+
+ *) Enforce checking in the pkeyutl command line app to ensure that the input
+ length does not exceed the maximum supported digest length when performing
+ a sign, verify or verifyrecover operation.
+ [Matt Caswell]
+
+ *) SSL_MODE_AUTO_RETRY is enabled by default. Applications that use blocking
+ I/O in combination with something like select() or poll() will hang. This
+ can be turned off again using SSL_CTX_clear_mode().
+ Many applications do not properly handle non-application data records, and
+ TLS 1.3 sends more of such records. Setting SSL_MODE_AUTO_RETRY works
+ around the problems in those applications, but can also break some.
+ It's recommended to read the manpages about SSL_read(), SSL_write(),
+ SSL_get_error(), SSL_shutdown(), SSL_CTX_set_mode() and
+ SSL_CTX_set_read_ahead() again.
+ [Kurt Roeckx]
+
+ *) When unlocking a pass phrase protected PEM file or PKCS#8 container, we
+ now allow empty (zero character) pass phrases.
+ [Richard Levitte]
+
+ *) Apply blinding to binary field modular inversion and remove patent
+ pending (OPENSSL_SUN_GF2M_DIV) BN_GF2m_mod_div implementation.
+ [Billy Bob Brumley]
+
+ *) Deprecate ec2_mult.c and unify scalar multiplication code paths for
+ binary and prime elliptic curves.
+ [Billy Bob Brumley]
+
+ *) Remove ECDSA nonce padding: EC_POINT_mul is now responsible for
+ constant time fixed point multiplication.
+ [Billy Bob Brumley]
+
+ *) Revise elliptic curve scalar multiplication with timing attack
+ defenses: ec_wNAF_mul redirects to a constant time implementation
+ when computing fixed point and variable point multiplication (which
+ in OpenSSL are mostly used with secret scalars in keygen, sign,
+ ECDH derive operations).
+ [Billy Bob Brumley, Nicola Tuveri, Cesar Pereida García,
+ Sohaib ul Hassan]
+
+ *) Updated CONTRIBUTING
+ [Rich Salz]
+
+ *) Updated DRBG / RAND to request nonce and additional low entropy
+ randomness from the system.
+ [Matthias St. Pierre]
+
+ *) Updated 'openssl rehash' to use OpenSSL consistent default.
+ [Richard Levitte]
+
+ *) Moved the load of the ssl_conf module to libcrypto, which helps
+ loading engines that libssl uses before libssl is initialised.
+ [Matt Caswell]
+
+ *) Added EVP_PKEY_sign() and EVP_PKEY_verify() for EdDSA
+ [Matt Caswell]
+
+ *) Fixed X509_NAME_ENTRY_set to get multi-valued RDNs right in all cases.
+ [Ingo Schwarze, Rich Salz]
+
+ *) Added output of accepting IP address and port for 'openssl s_server'
+ [Richard Levitte]
+
+ *) Added a new API for TLSv1.3 ciphersuites:
+ SSL_CTX_set_ciphersuites()
+ SSL_set_ciphersuites()
+ [Matt Caswell]
+
+ *) Memory allocation failures consistenly add an error to the error
+ stack.
+ [Rich Salz]
+
+ *) Don't use OPENSSL_ENGINES and OPENSSL_CONF environment values
+ in libcrypto when run as setuid/setgid.
+ [Bernd Edlinger]
+
+ *) Load any config file by default when libssl is used.
+ [Matt Caswell]
+
+ *) Added new public header file <openssl/rand_drbg.h> and documentation
+ for the RAND_DRBG API. See manual page RAND_DRBG(7) for an overview.
+ [Matthias St. Pierre]
+
+ *) QNX support removed (cannot find contributors to get their approval
+ for the license change).
+ [Rich Salz]
+
+ *) TLSv1.3 replay protection for early data has been implemented. See the
+ SSL_read_early_data() man page for further details.
+ [Matt Caswell]
+
+ *) Separated TLSv1.3 ciphersuite configuration out from TLSv1.2 ciphersuite
+ configuration. TLSv1.3 ciphersuites are not compatible with TLSv1.2 and
+ below. Similarly TLSv1.2 ciphersuites are not compatible with TLSv1.3.
+ In order to avoid issues where legacy TLSv1.2 ciphersuite configuration
+ would otherwise inadvertently disable all TLSv1.3 ciphersuites the
+ configuration has been separated out. See the ciphers man page or the
+ SSL_CTX_set_ciphersuites() man page for more information.
+ [Matt Caswell]
+
+ *) On POSIX (BSD, Linux, ...) systems the ocsp(1) command running
+ in responder mode now supports the new "-multi" option, which
+ spawns the specified number of child processes to handle OCSP
+ requests. The "-timeout" option now also limits the OCSP
+ responder's patience to wait to receive the full client request
+ on a newly accepted connection. Child processes are respawned
+ as needed, and the CA index file is automatically reloaded
+ when changed. This makes it possible to run the "ocsp" responder
+ as a long-running service, making the OpenSSL CA somewhat more
+ feature-complete. In this mode, most diagnostic messages logged
+ after entering the event loop are logged via syslog(3) rather than
+ written to stderr.
+ [Viktor Dukhovni]
+
+ *) Added support for X448 and Ed448. Heavily based on original work by
+ Mike Hamburg.
+ [Matt Caswell]
+
+ *) Extend OSSL_STORE with capabilities to search and to narrow the set of
+ objects loaded. This adds the functions OSSL_STORE_expect() and
+ OSSL_STORE_find() as well as needed tools to construct searches and
+ get the search data out of them.
+ [Richard Levitte]
+
+ *) Support for TLSv1.3 added. Note that users upgrading from an earlier
+ version of OpenSSL should review their configuration settings to ensure
+ that they are still appropriate for TLSv1.3. For further information see:
+ https://wiki.openssl.org/index.php/TLS1.3
+ [Matt Caswell]
+
+ *) Grand redesign of the OpenSSL random generator
+
+ The default RAND method now utilizes an AES-CTR DRBG according to
+ NIST standard SP 800-90Ar1. The new random generator is essentially
+ a port of the default random generator from the OpenSSL FIPS 2.0
+ object module. It is a hybrid deterministic random bit generator
+ using an AES-CTR bit stream and which seeds and reseeds itself
+ automatically using trusted system entropy sources.
+
+ Some of its new features are:
+ o Support for multiple DRBG instances with seed chaining.
+ o The default RAND method makes use of a DRBG.
+ o There is a public and private DRBG instance.
+ o The DRBG instances are fork-safe.
+ o Keep all global DRBG instances on the secure heap if it is enabled.
+ o The public and private DRBG instance are per thread for lock free
+ operation
+ [Paul Dale, Benjamin Kaduk, Kurt Roeckx, Rich Salz, Matthias St. Pierre]
+
+ *) Changed Configure so it only says what it does and doesn't dump
+ so much data. Instead, ./configdata.pm should be used as a script
+ to display all sorts of configuration data.
+ [Richard Levitte]
+
+ *) Added processing of "make variables" to Configure.
+ [Richard Levitte]
+
+ *) Added SHA512/224 and SHA512/256 algorithm support.
+ [Paul Dale]
+
+ *) The last traces of Netware support, first removed in 1.1.0, have
+ now been removed.
+ [Rich Salz]
+
+ *) Get rid of Makefile.shared, and in the process, make the processing
+ of certain files (rc.obj, or the .def/.map/.opt files produced from
+ the ordinal files) more visible and hopefully easier to trace and
+ debug (or make silent).
+ [Richard Levitte]
+
+ *) Make it possible to have environment variable assignments as
+ arguments to config / Configure.
+ [Richard Levitte]
+
+ *) Add multi-prime RSA (RFC 8017) support.
+ [Paul Yang]
+
+ *) Add SM3 implemented according to GB/T 32905-2016
+ [ Jack Lloyd <jack.lloyd@ribose.com>,
+ Ronald Tse <ronald.tse@ribose.com>,
+ Erick Borsboom <erick.borsboom@ribose.com> ]
+
+ *) Add 'Maximum Fragment Length' TLS extension negotiation and support
+ as documented in RFC6066.
+ Based on a patch from Tomasz Moń
+ [Filipe Raimundo da Silva]
+
+ *) Add SM4 implemented according to GB/T 32907-2016.
+ [ Jack Lloyd <jack.lloyd@ribose.com>,
+ Ronald Tse <ronald.tse@ribose.com>,
+ Erick Borsboom <erick.borsboom@ribose.com> ]