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NEWS

Noteworthy changes in version 1.10.0 (2022-02-01)  [C24/A4/R0]
-------------------------------------------------

* New and extended interfaces:

- New control codes to check for FIPS 140-3 approved algorithms.

- New control code to switch into non-FIPS mode.

- New cipher modes SIV and GCM-SIV as specified by RFC-5297.

- Extended cipher mode AESWRAP with padding as specified by
     RFC-5649.  [T5752]

- New set of KDF functions.

- New KDF modes Argon2 and Balloon.

- New functions for combining hashing and signing/verification.  [T4894]

* Performance:

- Improved support for PowerPC architectures.

- Improved ECC performance on zSeries/s390x by using accelerated
     scalar multiplication.

- Many more assembler performance improvements for several
     architectures.

* Bug fixes:

- Fix Elgamal encryption for other implementations.
     [R5328,CVE-2021-40528]

- Fix alignment problem on macOS.  [T5440]

- Check the input length of the point in ECDH.  [T5423]

- Fix an abort in gcry_pk_get_param for "Curve25519".  [T5490]

* Other features:

- The control code GCRYCTL_SET_ENFORCED_FIPS_FLAG is ignored
     because it is useless with the FIPS 140-3 related changes.

- Update of the jitter entropy RNG code.  [T5523]

- Simplification of the entropy gatherer when using the getentropy
     system call.

* Interface changes relative to the 1.10.0 release:
   ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   GCRYCTL_SET_DECRYPTION_TAG            NEW control code.
   GCRYCTL_FIPS_SERVICE_INDICATOR_CIPHER NEW control code.
   GCRYCTL_FIPS_SERVICE_INDICATOR_KDF    NEW control code.
   GCRYCTL_NO_FIPS_MODE = 83             NEW control code.
   GCRY_CIPHER_MODE_SIV                  NEW mode.
   GCRY_CIPHER_MODE_GCM_SIV              NEW mode.
   GCRY_CIPHER_EXTENDED                  NEW flag.
   GCRY_SIV_BLOCK_LEN                    NEW macro.
   gcry_cipher_set_decryption_tag        NEW macro.
   GCRY_KDF_ARGON2                       NEW constant.
   GCRY_KDF_BALLOON                      NEW constant.
   GCRY_KDF_ARGON2D                      NEW constant.
   GCRY_KDF_ARGON2I                      NEW constant.
   GCRY_KDF_ARGON2ID                     NEW constant.
   gcry_kdf_hd_t                         NEW type.
   gcry_kdf_job_fn_t                     NEW type.
   gcry_kdf_dispatch_job_fn_t            NEW type.
   gcry_kdf_wait_all_jobs_fn_t           NEW type.
   struct gcry_kdf_thread_ops            NEW struct.
   gcry_kdf_open                         NEW function.
   gcry_kdf_compute                      NEW function.
   gcry_kdf_final                        NEW function.
   gcry_kdf_close                        NEW function.
   gcry_pk_hash_sign                     NEW function.
   gcry_pk_hash_verify                   NEW function.
   gcry_pk_random_override_new           NEW function.

Release-info: https://dev.gnupg.org/T5691

Release dates of 1.9.x versions:
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   Version 1.9.4 (2021-08-22)

Noteworthy changes in version 1.9.3 (2021-04-19)  [C23/A3/R3]
------------------------------------------------

* Bug fixes:

- Fix build problems on i386 using gcc-4.7.

- Fix checksum calculation in OCB decryption for AES on s390.
     [#5356]

- Fix a regression in gcry_mpi_ec_add related to certain usages of
     curve 25519.  [#5372]

- Fix a symbol not found problem on Apple M1.  [#5370]

- Fix for Apple iOS getentropy peculiarity.  [#5375]

- Make keygrip computation work for compressed points.  [#4961]

* Performance:

- Add x86_64 VAES/AVX2 accelerated implementation of Camellia.
     [0e7e60241a]

- Add x86_64 VAES/AVX2 accelerated implementation of AES.
     [e72498a54f]

- Add VPMSUMD acceleration for GCM mode on PPC.  [#5040]

* Internal changes.

- Harden MPI conditional code against EM leakage.  [#5330]

- Harden Elgamal by introducing exponent blinding.  [#5328]

- Fix memory leaks in the error code paths of EdDSA.  [#5385]

Release-info: https://dev.gnupg.org/T5305

Noteworthy changes in version 1.9.2 (2021-02-17)  [C23/A3/R2]
------------------------------------------------

* Bug fixes:

- Fix build problem for macOS in the random code.  [#5268]

- Fix building with --disable-asm on x86.  [#5277]

- Check public key for ECDSA verify operation.  [#5282]

- Make sure gcry_get_config (NULL) returns a nul-terminated string.
     [8716e4b2ad]

- Fix a memory leak in the ECDH code.  [289543544e]

- Fix a reading beyond end of input buffer in SHA2-avx2.
     [24af2a55d8]

* Other features:

- New test driver to allow for standalone regression
     tests. [b142da4c88]

Release-info: https://dev.gnupg.org/T5276

Noteworthy changes in version 1.9.1 (2021-01-29)  [C23/A3/R1]
------------------------------------------------

* Bug fixes:

- Fix exploitable bug in hash functions introduced with 1.9.0.
     [#5275]

- Return an error if a negative MPI is used with sexp scan
     functions.  [#4964]

- Check for operational FIPS in the random and KDF functions.
     [#5243]

- Fix compile error on ARMv7 with NEON disabled.  [#5251]

- Fix self-test in KDF module.  [#5254]

- Improve assembler checks for better LTO support.  [#5255]

- Fix assember problem on macOS running on M1.  [#5157]

- Support older macOS without posix_spawn. [#5159]

- Fix 32-bit cross build on x86.  [#5257]

- Fix non-NEON ARM assembly implementation for SHA512.  [#5263]

- Fix build problems with the cipher_bulk_ops_t typedef.  [#5264]

- Fix Ed25519 private key handling for preceding ZEROs. [#5267]

- Fix overflow in modular inverse implementation.  [#5269]

- Fix register access for AVX/AVX2 implementations of Blake2.
     [#5271].

* Performance:

- Add optimized cipher and hash functions for s390x/zSeries.

- Use hardware bit counting functions when available.

* Internal changes:

- The macOS getentropy syscall is used when available.  [#5268]

- Update DSA functions to match FIPS 186-3.  [30ed9593f6]

- New self-tests for CMACs and KDFs.  [385a89e35b,7a0da24925]

- Add bulk cipher functions for OFB and GCM modes.
     [f12b6788f2,f4e63e92dc]

Release-info: https://dev.gnupg.org/T5259

Noteworthy changes in version 1.9.0 (2021-01-19)  [C23/A3/R0]
------------------------------------------------

* New and extended interfaces:

- New curves Ed448, X448, and SM2.

- New cipher mode EAX.

- New cipher algo SM4.

- New hash algo SM3.

- New hash algo variants SHA512/224 and SHA512/256.

- New MAC algos for Blake-2 algorithms, the new SHA512 variants,
     SM3, SM4 and for a GOST variant.

- New convenience function gcry_mpi_get_ui.

- gcry_sexp_extract_param understands new format specifiers to
     directly store to integers and strings.

- New function gcry_ecc_mul_point and curve constants for Curve448
     and Curve25519.  [#4293]

- New function gcry_ecc_get_algo_keylen.

- New control code GCRYCTL_AUTO_EXPAND_SECMEM to allow growing the
     secure memory area.  Also in 1.8.2 as an undocumented feature.

* Performance:

- Optimized implementations for Aarch64.

- Faster implementations for Poly1305 and ChaCha.  Also for
     PowerPC.  [b9a471ccf5,172ad09cbe,#4460]

- Optimized implementations of AES and SHA-256 on PowerPC.
     [#4529,#4530]

- Improved use of AES-NI to speed up AES-XTS (6 times faster).
     [a00c5b2988]

- Improved use of AES-NI for OCB.  [eacbd59b13,e924ce456d]

- Speedup AES-XTS on ARMv8/CE (2.5 times faster).  [93503c127a]

- New AVX and AVX2 implementations for Blake-2 (1.3/1.4 times
     faster).  [af7fc732f9, da58a62ac1]

- Use Intel SHA extension for SHA-1 and SHA-256 (4.0/3.7 times
     faster).  [d02958bd30, 0b3ec359e2]

- Use ARMv7/NEON accelerated GCM implementation (3 times faster).
     [2445cf7431]

- Use of i386/SSSE3 for SHA-512 (4.5 times faster on Ryzen 7).
     [b52dde8609]

- Use 64 bit ARMv8/CE PMULL for CRC (7 times faster).  [14c8a593ed]

- Improve CAST5 (40% to 70% faster).  [4ec566b368]

- Improve Blowfish (60% to 80% faster).  [ced7508c85]

* Bug fixes:

- Fix infinite loop due to applications using fork the wrong
     way.  [#3491][also in 1.8.4]

- Fix possible leak of a few bits of secret primes to pageable
     memory.  [#3848][also in 1.8.4]

- Fix possible hang in the RNG (1.8.3 only).  [#4034][also in 1.8.4]

- Several minor fixes.  [#4102,#4208,#4209,#4210,#4211,#4212]
     [also in 1.8.4]

- On Linux always make use of getrandom if possible and then use
     its /dev/urandom behaviour.  [#3894][also in 1.8.4]

- Use blinding for ECDSA signing to mitigate a novel side-channel
     attack.  [#4011,CVE-2018-0495] [also in 1.8.3, 1.7.10]

- Fix incorrect counter overflow handling for GCM when using an IV
     size other than 96 bit.  [#3764] [also in 1.8.3, 1.7.10]

- Fix incorrect output of AES-keywrap mode for in-place encryption
     on some platforms.  [also in 1.8.3, 1.7.10]

- Fix the gcry_mpi_ec_curve_point point validation function.
     [also in 1.8.3, 1.7.10]

- Fix rare assertion failure in gcry_prime_check.  [also in 1.8.3]

- Do not use /dev/srandom on OpenBSD.  [also in 1.8.2]

- Fix test suite failure on systems with large pages. [#3351]
     [also in 1.8.2]

- Fix test suite to not use mmap on Windows.  [also in 1.8.2]

- Fix fatal out of secure memory status in the s-expression parser
     on heavy loaded systems.  [also in 1.8.2]

- Fix build problems on OpenIndiana et al. [#4818, also in 1.8.6]

- Fix GCM bug on arm64 which troubles for example OMEMO.  [#4986,
     also in 1.8.6]

- Detect a div-by-zero in a debug helper tool.  [#4868, also in 1.8.6]

- Use a constant time mpi_inv and related changes.  [#4869, partly
     also in 1.8.6]

- Fix mpi_copy to correctly handle flags of opaque MPIs.
     [also in 1.8.6]

- Fix mpi_cmp to consider +0 and -0 the same.  [also in 1.8.6]

- Fix extra entropy collection via clock_gettime.  Note that this
     fallback code path is not used on any decent hardware.  [#4966,
     also in 1.8.7]

- Support opaque MPI with gcry_mpi_print.  [#4872, also in 1.8.7]

- Allow for a Unicode random seed file on Windows.  [#5098, also in
     1.8.7]

* Other features:

- Add OIDs from RFC-8410 as aliases for Ed25519 and Curve25519.
     [also in 1.8.6]

- Add mitigation against ECC timing attack CVE-2019-13627.  [#4626]

- Internal cleanup of the ECC implementation.

- Support reading EC point in compressed format for some curves.
     [#4951]

* Interface changes relative to the 1.8.0 release:
   ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   gcry_mpi_get_ui                 NEW function.
   GCRYCTL_AUTO_EXPAND_SECMEM      NEW control code.
   gcry_sexp_extract_param         EXTENDED.
   GCRY_CIPHER_GOST28147_MESH      NEW cipher algo.
   GCRY_CIPHER_SM4                 NEW cipher algo.
   GCRY_CIPHER_MODE_EAX            NEW mode.
   GCRY_ECC_CURVE25519             NEW curve id.
   GCRY_ECC_CURVE448               NEW curve id.
   gcry_ecc_get_algo_keylen        NEW function.
   gcry_ecc_mul_point              NEW function.
   GCRY_MD_SM3                     NEW hash algo.
   GCRY_MD_SHA512_256              NEW hash algo.
   GCRY_MD_SHA512_224              NEW hash algo.
   GCRY_MAC_GOST28147_IMIT         NEW mac algo.
   GCRY_MAC_HMAC_GOSTR3411_CP      NEW mac algo.
   GCRY_MAC_HMAC_BLAKE2B_512       NEW mac algo.
   GCRY_MAC_HMAC_BLAKE2B_384       NEW mac algo.
   GCRY_MAC_HMAC_BLAKE2B_256       NEW mac algo.
   GCRY_MAC_HMAC_BLAKE2B_160       NEW mac algo.
   GCRY_MAC_HMAC_BLAKE2S_256       NEW mac algo.
   GCRY_MAC_HMAC_BLAKE2S_224       NEW mac algo.
   GCRY_MAC_HMAC_BLAKE2S_160       NEW mac algo.
   GCRY_MAC_HMAC_BLAKE2S_128       NEW mac algo.
   GCRY_MAC_HMAC_SM3               NEW mac algo.
   GCRY_MAC_HMAC_SHA512_256        NEW mac algo.
   GCRY_MAC_HMAC_SHA512_224        NEW mac algo.
   GCRY_MAC_CMAC_SM4               NEW mac algo.

Release-info: https://dev.gnupg.org/T4294

Release dates of 1.8.x versions:
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   Version 1.8.2 (2017-12-13)
   Version 1.8.3 (2018-06-13)
   Version 1.8.4 (2018-10-26)
   Version 1.8.5 (2019-08-29)
   Version 1.8.6 (2020-07-06)
   Version 1.8.7 (2020-10-23)

Noteworthy changes in version 1.8.1 (2017-08-27)  [C22/A2/R1]
------------------------------------------------

* Bug fixes:

- Mitigate a local side-channel attack on Curve25519 dubbed "May
     the Fourth be With You".  [CVE-2017-0379] [also in 1.7.9]

- Add more extra bytes to the pool after reading a seed file.

- Add the OID SHA384WithECDSA from RFC-7427 to SHA-384.

- Fix build problems with the Jitter RNG

- Fix assembler code build problems on Rasbian (ARMv8/AArch32-CE).

Noteworthy changes in version 1.8.0 (2017-07-18)  [C22/A2/R0]
------------------------------------------------

* New interfaces:

- New cipher mode XTS

- New hash function Blake-2

- New function gcry_mpi_point_copy.

- New function gcry_get_config.

- GCRYCTL_REINIT_SYSCALL_CLAMP allows to init nPth after Libgcrypt.

- New global configuration file /etc/gcrypt/random.conf.

* Extended interfaces:

- GCRYCTL_PRINT_CONFIG does now also print build information for
     libgpg-error and the used compiler version.

- GCRY_CIPHER_MODE_CFB8 is now supported.

- Add Stribog OIDs.  [also in 1.7.4]

* Performance:

- A jitter based entropy collector is now used in addition to the
     other entropy collectors.

- Optimized gcry_md_hash_buffers for SHA-256 and SHA-512.

- More ARMv8/AArch32 improvements for AES, GCM, SHA-256, and SHA-1.
     [also in 1.7.4]

- Add ARMv8/AArch32 assembly implementation for Twofish and
     Camellia.  [also in 1.7.4]

- Add bulk processing implementation for ARMv8/AArch32.
     [also in 1.7.4]

- Improve the DRBG performance and sync the code with the Linux
     version.  [also in 1.7.4]

* Internal changes:

- Libgpg-error 1.25 is now required.  This avoids stalling of nPth
     threads due to contention on internal Libgcrypt locks (e.g. the
     random pool lock).

- The system call clamp of libgpg-error is now used to wrap the
     blocking read of /dev/random.  This allows other nPth threads to
     run while Libgcrypt is gathering entropy.

- When secure memory is requested by the MPI functions or by
     gcry_xmalloc_secure, they do not anymore lead to a fatal error if
     the secure memory pool is used up.  Instead new pools are
     allocated as needed.  These new pools are not protected against
     being swapped out (mlock can't be used).  However, these days
     this is considered a minor issue and can easily be mitigated by
     using encrypted swap space.  [also in 1.7.4]

* Bug fixes:

- Fix AES CTR self-check detected failure in the SSSE3 based
     implementation.  [also in 1.7.6]

- Remove gratuitous select before the getrandom syscall.
     [also in 1.7.6]

- Fix regression in mlock detection.  [bug#2870] [also in 1.7.5]

- Fix GOST 28147 CryptoPro-B S-box.   [also in 1.7.4]

- Fix error code handling of mlock calls.  [also in 1.7.4]

- Fix possible timing attack on EdDSA session key. [also in 1.7.7]

- Fix long standing bug in secure memory implementation which could
     lead to a segv on free. [bug#3027] [also in 1.7.7]

- Mitigate a flush+reload side-channel attack on RSA secret keys
     dubbed "Sliding right into disaster".  For details see
     <https://eprint.iacr.org/2017/627>.  [CVE-2017-7526] [also in 1.7.8]

* Interface changes relative to the 1.7.0 release:
   ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   gcry_get_config                 NEW function.
   gcry_mpi_point_copy             NEW function.
   GCRYCTL_REINIT_SYSCALL_CLAMP    NEW macro.
   GCRY_MD_BLAKE2B_512             NEW constant.
   GCRY_MD_BLAKE2B_384             NEW constant.
   GCRY_MD_BLAKE2B_256             NEW constant.
   GCRY_MD_BLAKE2B_160             NEW constant.
   GCRY_MD_BLAKE2S_256             NEW constant.
   GCRY_MD_BLAKE2S_224             NEW constant.
   GCRY_MD_BLAKE2S_160             NEW constant.
   GCRY_MD_BLAKE2S_128             NEW constant.
   GCRY_CIPHER_MODE_XTS            NEW constant.
   gcry_md_info                    DEPRECATED.

* Release dates of 1.7.x versions:
   ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   Version 1.7.10 (2018-06-13) [C21/A1/R10]
   Version 1.7.9  (2017-08-27) [C21/A1/R9]
   Version 1.7.8  (2017-06-29) [C21/A1/R8]
   Version 1.7.7  (2017-06-02) [C21/A1/R7]
   Version 1.7.6  (2017-01-18) [C21/A1/R6]
   Version 1.7.5  (2016-12-15) [C21/A1/R5]
   Version 1.7.4  (2016-12-09) [C21/A1/R4]

Noteworthy changes in version 1.7.3 (2016-08-17)  [C21/A1/R3]
------------------------------------------------

* Bug fixes:

- Fix critical security bug in the RNG [CVE-2016-6313].  An
     attacker who obtains 580 bytes from the standard RNG can
     trivially predict the next 20 bytes of output.  Problem
     detected by Felix Dörre and Vladimir Klebanov, KIT.

- Fix building of some asm modules with older compilers and CPUs.

* Performance:

- ARMv8/AArch32 improvements for AES, GCM, SHA-256, and SHA-1.

Noteworthy changes in version 1.7.2 (2016-07-14)  [C21/A1/R2]
------------------------------------------------

* Bug fixes:

- Fix setting of the ECC cofactor if parameters are specified.

- Fix memory leak in the ECC code.

- Remove debug message about unsupported getrandom syscall.

- Fix build problems related to AVX use.

- Fix bus errors on ARM for Poly1305, ChaCha20, AES, and SHA-512.

* Internal changes:

- Improved fatal error message for wrong use of gcry_md_read.

- Disallow symmetric encryption/decryption if key is not set.

Noteworthy changes in version 1.7.1 (2016-06-15)  [C21/A1/R1]
------------------------------------------------

* Bug fixes:

- Fix ecc_verify for cofactor support.

- Fix portability bug when using gcc with Solaris 9 SPARC.

- Build fix for OpenBSD/amd64

- Add OIDs to the Serpent ciphers.

* Internal changes:

- Use getrandom system call on Linux if available.

- Blinding is now also used for RSA signature creation.

- Changed names of debug envvars

Noteworthy changes in version 1.7.0 (2016-04-15)  [C21/A1/R0]
------------------------------------------------

* New algorithms and modes:

- SHA3-224, SHA3-256, SHA3-384, SHA3-512, and MD2 hash algorithms.

- SHAKE128 and SHAKE256 extendable-output hash algorithms.

- ChaCha20 stream cipher.

- Poly1305 message authentication algorithm

- ChaCha20-Poly1305 Authenticated Encryption with Associated Data
     mode.

- OCB mode.

- HMAC-MD2 for use by legacy applications.

* New curves for ECC:

- Curve25519.

- sec256k1.

- GOST R 34.10-2001 and GOST R 34.10-2012.

* Performance:

- Improved performance of KDF functions.

- Assembler optimized implementations of Blowfish and Serpent on
     ARM.

- Assembler optimized implementation of 3DES on x86.

- Improved AES using the SSSE3 based vector permutation method by
     Mike Hamburg.

- AVX/BMI is used for SHA-1 and SHA-256 on x86.  This is for SHA-1
     about 20% faster than SSSE3 and more than 100% faster than the
     generic C implementation.

- 40% speedup for SHA-512 and 72% for SHA-1 on ARM Cortex-A8.

- 60-90% speedup for Whirlpool on x86.

- 300% speedup for RIPE MD-160.

- Up to 11 times speedup for CRC functions on x86.

* Other features:

- Improved ECDSA and FIPS 186-4 compliance.

- Support for Montgomery curves.

- gcry_cipher_set_sbox to tweak S-boxes of the gost28147 cipher
     algorithm.

- gcry_mpi_ec_sub to subtract two points on a curve.

- gcry_mpi_ec_decode_point to decode an MPI into a point object.

- Emulation for broken Whirlpool code prior to 1.6.0.  [from 1.6.1]

- Flag "pkcs1-raw" to enable PCKS#1 padding with a user supplied
     hash part.

- Parameter "saltlen" to set a non-default salt length for RSA PSS.

- A SP800-90A conforming DRNG replaces the former X9.31 alternative
     random number generator.

- Map deprecated RSA algo number to the RSA algo number for better
     backward compatibility. [from 1.6.2]

- Use ciphertext blinding for Elgamal decryption [CVE-2014-3591].
     See http://www.cs.tau.ac.il/~tromer/radioexp/ for details.
     [from 1.6.3]

- Fixed data-dependent timing variations in modular exponentiation
     [related to CVE-2015-0837, Last-Level Cache Side-Channel Attacks
      are Practical]. [from 1.6.3]

- Flag "no-keytest" for ECC key generation.  Due to a bug in
     the parser that flag will also be accepted but ignored by older
     version of Libgcrypt. [from 1.6.4]

- Speed up the random number generator by requiring less extra
     seeding. [from 1.6.4]

- Always verify a created RSA signature to avoid private key leaks
     due to hardware failures. [from 1.6.4]

- Mitigate side-channel attack on ECDH with Weierstrass curves
     [CVE-2015-7511].  See http://www.cs.tau.ac.IL/~tromer/ecdh/ for
     details. [from 1.6.5]

* Internal changes:

- Moved locking out to libgpg-error.

- Support of the SYSROOT envvar in the build system.

- Refactor some code.

- The availability of a 64 bit integer type is now mandatory.

* Bug fixes:

- Fixed message digest lookup by OID (regression in 1.6.0).

- Fixed a build problem on NetBSD

- Fixed memory leaks in ECC code.

- Fixed some asm build problems and feature detection bugs.

* Interface changes relative to the 1.6.0 release:
   ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   gcry_cipher_final               NEW macro.
   GCRY_CIPHER_MODE_CFB8           NEW constant.
   GCRY_CIPHER_MODE_OCB            NEW.
   GCRY_CIPHER_MODE_POLY1305       NEW.
   gcry_cipher_set_sbox            NEW macro.
   gcry_mac_get_algo               NEW.
   GCRY_MAC_HMAC_MD2               NEW.
   GCRY_MAC_HMAC_SHA3_224          NEW.
   GCRY_MAC_HMAC_SHA3_256          NEW.
   GCRY_MAC_HMAC_SHA3_384          NEW.
   GCRY_MAC_HMAC_SHA3_512          NEW.
   GCRY_MAC_POLY1305               NEW.
   GCRY_MAC_POLY1305_AES           NEW.
   GCRY_MAC_POLY1305_CAMELLIA      NEW.
   GCRY_MAC_POLY1305_SEED          NEW.
   GCRY_MAC_POLY1305_SERPENT       NEW.
   GCRY_MAC_POLY1305_TWOFISH       NEW.
   gcry_md_extract                 NEW.
   GCRY_MD_FLAG_BUGEMU1            NEW [from 1.6.1].
   GCRY_MD_GOSTR3411_CP            NEW.
   GCRY_MD_SHA3_224                NEW.
   GCRY_MD_SHA3_256                NEW.
   GCRY_MD_SHA3_384                NEW.
   GCRY_MD_SHA3_512                NEW.
   GCRY_MD_SHAKE128                NEW.
   GCRY_MD_SHAKE256                NEW.
   gcry_mpi_ec_decode_point        NEW.
   gcry_mpi_ec_sub                 NEW.
   GCRY_PK_EDDSA                   NEW constant.
   GCRYCTL_GET_TAGLEN              NEW.
   GCRYCTL_SET_SBOX                NEW.
   GCRYCTL_SET_TAGLEN              NEW.
   ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Version 1.6.5 (2016-02-09) [C20/A0/R5]
Version 1.6.4 (2015-09-08) [C20/A0/R4]
Version 1.6.3 (2015-02-27) [C20/A0/R3]
Version 1.6.2 (2014-08-21) [C20/A0/R2]
Version 1.6.1 (2014-01-29) [C20/A0/R1]

Noteworthy changes in version 1.6.0 (2013-12-16) [C20/A0/R0]
------------------------------------------------

* Removed the long deprecated gcry_ac interface.  Thus Libgcrypt is
   not anymore ABI compatible to previous versions if they used the ac
   interface.

* Removed the module register subsystem.

* The deprecated message digest debug macros have been removed.  Use
   gcry_md_debug instead.

* Removed deprecated control codes.

* Improved performance of most cipher algorithms as well as for the
   SHA family of hash functions.

* Added support for the IDEA cipher algorithm.

* Added support for the Salsa20 and reduced Salsa20/12 stream ciphers.

* Added limited support for the GOST 28147-89 cipher algorithm.

* Added support for the GOST R 34.11-94 and R 34.11-2012 (Stribog)
   hash algorithms.

* Added a random number generator to directly use the system's RNG.
   Also added an interface to prefer the use of a specified RNG.

* Added support for the SCRYPT algorithm.

* Mitigated the Yarom/Falkner flush+reload side-channel attack on RSA
   secret keys.  See <http://eprint.iacr.org/2013/448> [CVE-2013-4242].

* Added support for Deterministic DSA as per RFC-6979.

* Added support for curve Ed25519.

* Added a scatter gather hash convenience function.

* Added several MPI amd SEXP helper functions.

* Added support for negative numbers to gcry_mpi_print,
   gcry_mpi_aprint and gcry_mpi_scan.

* The algorithm ids GCRY_PK_ECDSA and GCRY_PK_ECDH are now
   deprecated.  Use GCRY_PK_ECC if you need an algorithm id.

* Changed gcry_pk_genkey for "ecc" to only include the curve name and
   not the parameters.  The flag "param" may be used to revert this.

* Added a feature to globally disable selected hardware features.

* Added debug helper functions.

* Interface changes relative to the 1.5.0 release:
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 gcry_ac_*               	 REMOVED.
 GCRY_AC_*               	 REMOVED.
 gcry_module_t          	 REMOVED.
 gcry_cipher_register   	 REMOVED.
 gcry_cipher_unregister 	 REMOVED.
 gcry_cipher_list       	 REMOVED.
 gcry_pk_register       	 REMOVED.
 gcry_pk_unregister     	 REMOVED.
 gcry_pk_list           	 REMOVED.
 gcry_md_register       	 REMOVED.
 gcry_md_unregister     	 REMOVED.
 gcry_md_list           	 REMOVED.
 gcry_md_start_debug    	 REMOVED (macro).
 gcry_md_stop_debug     	 REMOVED (macro).
 GCRYCTL_SET_KEY                 REMOVED.
 GCRYCTL_SET_IV                  REMOVED.
 GCRYCTL_SET_CTR                 REMOVED.
 GCRYCTL_DISABLE_ALGO            CHANGED: Not anymore thread-safe.
 gcry_pk_genkey                  CHANGED: ECC curve params not returned.
 gcry_md_hash_buffers            NEW.
 gcry_buffer_t                   NEW.
 GCRYCTL_SET_ENFORCED_FIPS_FLAG  NEW.
 GCRYCTL_SET_PREFERRED_RNG_TYPE  NEW.
 GCRYCTL_GET_CURRENT_RNG_TYPE    NEW.
 GCRYCTL_CLOSE_RANDOM_DEVICE     NEW.
 GCRY_RNG_TYPE_STANDARD          NEW.
 GCRY_RNG_TYPE_FIPS              NEW.
 GCRY_RNG_TYPE_SYSTEM            NEW.
 gcry_mpi_is_neg                 NEW.
 gcry_mpi_neg                    NEW.
 gcry_mpi_abs                    NEW.
 gcry_mpi_snatch                 NEW.
 gcry_mpi_set_opaque_copy        NEW.
 gcry_mpi_point_t                NEW.
 gcry_mpi_point_new              NEW.
 gcry_mpi_point_release          NEW.
 gcry_mpi_point_get              NEW.
 gcry_mpi_point_snatch_get       NEW.
 gcry_mpi_point_set              NEW.
 gcry_mpi_point_snatch_set       NEW.
 gcry_ctx_t                      NEW.
 gcry_ctx_release                NEW.
 gcry_mpi_ec_new                 NEW.
 gcry_mpi_ec_get_mpi             NEW.
 gcry_mpi_ec_get_point           NEW.
 gcry_mpi_ec_set_mpi             NEW.
 gcry_mpi_ec_set_point           NEW.
 gcry_mpi_ec_get_affine          NEW.
 gcry_mpi_ec_dup                 NEW.
 gcry_mpi_ec_add                 NEW.
 gcry_mpi_ec_mul                 NEW.
 gcry_mpi_ec_curve_point         NEW.
 GCRYMPI_FLAG_IMMUTABLE          NEW.
 GCRYMPI_FLAG_CONST              NEW.
 GCRYMPI_FLAG_USER1              NEW.
 GCRYMPI_FLAG_USER2              NEW.
 GCRYMPI_FLAG_USER3              NEW.
 GCRYMPI_FLAG_USER4              NEW.
 GCRYMPI_CONST_ONE               NEW.
 GCRYMPI_CONST_TWO               NEW.
 GCRYMPI_CONST_THREE             NEW.
 GCRYMPI_CONST_FOUR              NEW.
 GCRYMPI_CONST_EIGHT             NEW.
 GCRYMPI_FMT_OPAQUE              NEW.
 GCRYPT_VERSION_NUMBER           NEW.
 GCRY_KDF_SCRYPT                 NEW.
 gcry_pubkey_get_sexp            NEW.
 GCRYCTL_DISABLE_LOCKED_SECMEM   NEW.
 GCRYCTL_DISABLE_PRIV_DROP       NEW.
 GCRY_CIPHER_SALSA20             NEW.
 gcry_sexp_nth_buffer            NEW.
 gcry_sexp_extract_param         NEW.
 GCRY_CIPHER_SALSA20R12          NEW.
 GCRY_CIPHER_GOST28147           NEW.
 GCRY_MD_GOSTR3411_94            NEW.
 GCRY_MD_STRIBOG256              NEW.
 GCRY_MD_STRIBOG512              NEW.
 GCRY_PK_ECC                     NEW.
 gcry_log_debug                  NEW.
 gcry_log_debughex               NEW.
 gcry_log_debugmpi               NEW.
 gcry_log_debugpnt               NEW.

Noteworthy changes in version 1.5.0 (2011-06-29)
------------------------------------------------

* New function gcry_kdf_derive implementing OpenPGP S2K algorithms
   and PBKDF2.

* Support for WindowsCE.

* Support for ECDH.

* Support for OAEP and PSS methods as described by RFC-3447.

* Fixed PKCS v1.5 code to always return the leading zero.

* New format specifiers "%M" and "%u" for gcry_sexp_build.

* Support opaque MPIs with "%m" and "%M" in gcry_sexp_build.

* New functions gcry_pk_get_curve and gcry_pk_get_param to map ECC
   parameters to a curve name and to retrieve parameter values.

* gcry_mpi_cmp applied to opaque values has a defined semantic now.

* Uses the Intel AES-NI instructions if available.

* The use of the deprecated Alternative Public Key Interface
   (gcry_ac_*) will now print compile time warnings.

* The module register subsystem has been deprecated.  This subsystem
   is not flexible enough and would always require ABI changes to
   extend the internal interfaces.  It will eventually be removed.
   Please contact us on the gcrypt-devel mailing list to discuss
   whether you really need this feature or how it can be replaced by
   an internal plugin mechanism.

* CTR mode may now be used with data chunks of arbitrary length.

* Changes also done in 1.4.6 (2010-07-13):
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

* New variants of the TIGER algorithm.

* New cipher algorithm mode for AES-WRAP.

* Changes also done in 1.4.5 (2009-12-11):
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

* Fixed minor memory leak in DSA key generation.

* No more switching to FIPS mode if /proc/version is not readable.

* Fixed sigill during Padlock detection on old CPUs.

* Fixed a hang on some W2000 machines.

* Boosted SHA-512 performance by 30% on ia32 boxes and gcc 4.3;
   SHA-256 went up by 25%.

* Interface changes relative to the 1.4.6 release:
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 GCRY_PK_ECDH               NEW.
 gcry_pk_get_curve          NEW.
 gcry_pk_get_param          NEW.
 GCRYCTL_DISABLE_HWF        NEW.
 gcry_kdf_derive            NEW.
 gcry_pk_encrypt            EXTENDED: Support OAEP.
 gcry_pk_decrypt            EXTENDED: Support OAEP.
 gcry_pk_sign               EXTENDED: Support PSS.
 gcry_pk_verify             EXTENDED: Support PSS.
 gcry_sexp_build            EXTENDED: Add format specifiers M and u.

* Interface changes relative to the 1.4.2 release:
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 GCRY_CIPHER_MODE_AESWRAP   NEW.
 GCRY_MD_TIGER1             NEW.
 GCRY_MD_TIGER2             NEW.

Noteworthy changes in version 1.4.4 (2009-01-22)
------------------------------------------------

* Publish GCRY_MODULE_ID_USER and GCRY_MODULE_ID_USER_LAST constants.
   This functionality has been in Libgcrypt since 1.3.0.

* MD5 may now be used in non-enforced fips mode.

* Fixed HMAC for SHA-384 and SHA-512 with keys longer than 64 bytes.

* In fips mode, RSA keys are now generated using the X9.31 algorithm
   and DSA keys using the FIPS 186-2 algorithm.

* The transient-key flag is now also supported for DSA key
   generation.  DSA domain parameters may be given as well.

Noteworthy changes in version 1.4.3 (2008-09-18)
------------------------------------------------

* Try to auto-initialize Libgcrypt to minimize the effect of
   applications not doing that correctly.  This is not a perfect
   solution but given that many applicationion would totally fail
   without such a hack, we try to help at least with the most common
   cases.  Folks, please read the manual to learn how to properly
   initialize Libgcrypt!

* Auto-initialize the secure memory to 32k instead of aborting the
   process.

* Log fatal errors via syslog.

* Changed the name and the semantics of the fips mode config file.

* Add convenience macro gcry_fips_mode_active.

* More self-tests.

* Documentation cleanups.

Noteworthy changes in version 1.4.2 (2008-09-08)
------------------------------------------------

* The long missing gcry_mpi_lshift function has been added.

* RSA key generation now supports a "transient-key" flag.

* The keygrip computation for ECDSA has been implemented thus ECDSA
   is now fully supported.

* A few macros have been replaced by functions for better type
   checking.

* The thread initialization structure now carries version
   information.

* The manual describes more clearly how to initialize Libgcrypt.

* The library may now be switched into a FIPS mode.

* Interface changes relative to the 1.3.0 release:
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 GCRYCTL_OPERATIONAL_P   NEW.
 GCRYCTL_FIPS_MODE_P     NEW.
 GCRYCTL_FORCE_FIPS_MODE NEW.
 gcry_cipher_setkey      NEW: Replaces macro.
 gcry_cipher_setiv       NEW: Replaces macro.
 gcry_cipher_setctr      NEW: Replaces macro.
 gcry_mpi_lshift         NEW.
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Noteworthy changes in version 1.4.1 (2008-04-25)
------------------------------------------------

* Fixed a bug introduced by 1.3.1 which led to the comsumption of far
   too much entropy for the intial seeding.

* Improved AES performance for CFB and CBC modes.

* Removed build problems for the Padlock support.

Noteworthy changes in version 1.4.0 (2007-12-10)
------------------------------------------------

* New configure option --disable-padlock-support which is mostly
   useful in case of build problems.

Noteworthy changes in version 1.3.2 (2007-12-03)
------------------------------------------------

* The visibility attribute is now used if supported by the toolchain.

* The ACE engine of VIA processors is now used for AES-128.

* The ASN.1 DER template for SHA-224 has been fixed.

Noteworthy changes in version 1.3.1 (2007-10-26)
------------------------------------------------

* The entire library is now under the LGPL. The helper programs and
   the manual are under the GPL.  Kudos to Peter Gutmann for giving
   permissions to relicense the rndw32 and rndunix modules.

* The Camellia cipher is now under the LGPL and included by default.

* Fixed a bug in the detection of symbol prefixes which inhibited the
   build of optimzied assembler code on certain systems.

* Updated the entropy gatherer for W32.

Noteworthy changes in version 1.3.0 (2007-05-04)
------------------------------------------------

* Changed the way the RNG gets initialized. This allows to keep it
   uninitialized as long as no random numbers are used.  To override
   this, the new macro gcry_fast_random_poll may be used.  It is in
   general a good idea to spread this macro into the application code
   to make sure that these polls happen often enough.

* Made the RNG immune against fork without exec.

* Reading and writing the random seed file is now protected by a
   fcntl style file lock on systems that provide this function.

* Support for SHA-224 and HMAC using SHA-384 and SHA-512.

* Support for the SEED cipher.

* Support for the Camellia cipher.  Note that Camellia is disabled by
   default, and that enabling it changes the license of libgcrypt from
   LGPL to GPL.

* Support for OFB encryption mode.

* gcry_mpi_rshift does not anymore truncate the shift count.

* Reserved algorithm ranges for use by applications.

* Support for DSA2.

* The new function gcry_md_debug should be used instead of the
   gcry_md_start_debug and gcry_md_stop_debug macros.

* New configure option --enable-random-daemon to support a system
   wide random daemon.  The daemon code is experimental and not yet
   very well working.  It will eventually allow to keep a global
   random pool for the sake of short living processes.

* Non executable stack support is now used by default on systems
   supporting it.

* Support for Microsoft Windows.

* Assembler support for the AMD64 architecture.

* New configure option --enable-mpi-path for optimized builds.

* Experimental support for ECDSA; should only be used for testing.

* New control code GCRYCTL_PRINT_CONFIG to print the build
   configuration.

* Minor changes to some function declarations.  Buffer arguments are
   now typed as void pointer.  This should not affect any compilation.
   Fixed two bugs in return values and clarified documentation.

* Interface changes relative to the 1.2.0 release:
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 gcry_fast_random_poll	 NEW
 gcry_md_debug           NEW
 gcry_sexp_nth_string    NEW
 GCRY_MD_SHA224          NEW
 GCRY_PK_USAGE_CERT      NEW
 GCRY_PK_USAGE_AUTH      NEW
 GCRY_PK_USAGE_UNKN      NEW
 GCRY_PK_ECDSA           NEW
 GCRY_CIPHER_SEED        NEW
 GCRY_CIPHER_CAMELLIA128 NEW
 GCRY_CIPHER_CAMELLIA192 NEW
 GCRY_CIPHER_CAMELLIA256 NEW
 GCRYCTL_FAKED_RANDOM_P  NEW
 GCRYCTL_PRINT_CONFIG    NEW
 GCRYCTL_SET_RNDEGD_SOCKET  NEW.
 gcry_mpi_scan           CHANGED: Argument BUFFER is now void*.
 gcry_pk_algo_name       CHANGED: Returns "?" instead of NULL.
 gcry_cipher_algo_name   CHANGED: Returns "?" instead of "".
 gcry_pk_spec_t          CHANGED: Element ALIASES is now const ptr.
 gcry_md_write_t         CHANGED: Argument BUF is now a const void*.
 gcry_md_ctl             CHANGED: Argument BUFFER is now void*.
 gcry_cipher_encrypt     CHANGED: Arguments IN and OUT are now void*.
 gcry_cipher_decrypt     CHANGED: Arguments IN and OUT are now void*.
 gcry_sexp_sprint        CHANGED: Argument BUFFER is now void*.
 gcry_create_nonce       CHANGED: Argument BUFFER is now void*.
 gcry_randomize          CHANGED: Argument BUFFER is now void*.
 gcry_cipher_register    CHANGED: Argument ALGORITHM_ID is now int*.
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Noteworthy changes in version 1.2.0 (2004-04-15)
------------------------------------------------

* First stable release.

Noteworthy changes in version 1.1.94 (2004-03-29)
-------------------------------------------------

* The support for multi-threaded users goes into its third
   incarnation.  We removed compile time support for thread libraries.
   To support the thread library of your choice, you have to set up
   callback handlers at initialization time.  New data structures, a
   new control command, and default initializers are provided for this
   purpose.

* Interface changes relative to the 1.1.93 release:
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
libgcrypt-config --thread	OBSOLETE
libgcrypt-pth.la		REMOVED
libgcrypt-pthread.la		REMOVED
GCRYCTL_SET_THREAD_CBS		NEW
struct gcrypt_thread_cbs	NEW
enum gcry_thread_option		NEW
GCRY_THREAD_OPTION_PTH_IMPL	NEW
GCRY_THREAD_OPTION_PTHREAD_IMPL	NEW
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Noteworthy changes in version 1.1.93 (2004-03-06)
-------------------------------------------------

* The automatic thread library detection has finally been removed.
   From now on, only linking explicitely to libgcrypt, libgcrypt-pth
   or libgcrypt-pthread is supported.

Noteworthy changes in version 1.1.92 (2004-02-20)
-------------------------------------------------

* Minor bug fixes.

* Included a limited implementation of RFC2268.

* Changed API of the gcry_ac_ functions.  Only a very few programs
   should be affected by this.

* Interface changes relative to the 1.1.91 release:
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
GCRY_CIPHER_RFC2268_40          NEW.
gcry_ac_data_set                CHANGED: New argument FLAGS.
gcry_ac_data_get_name           CHANGED: New argument FLAGS.
gcry_ac_data_get_index          CHANGED: New argument FLAGS.
gcry_ac_key_pair_generate       CHANGED: New and reordered arguments.
gcry_ac_key_test                CHANGED: New argument HANDLE.
gcry_ac_key_get_nbits           CHANGED: New argument HANDLE.
gcry_ac_key_get_grip            CHANGED: New argument HANDLE.
gcry_ac_data_search             REMOVED.
gcry_ac_data_add                REMOVED.
GCRY_AC_DATA_FLAG_NO_BLINDING   REMOVED.
GCRY_AC_FLAG_NO_BLINDING        NEW: Replaces above.

Noteworthy changes in version 1.1.91 (2003-12-19)
-------------------------------------------------

* Code cleanups and minor bug fixes.

Noteworthy changes in version 1.1.90 (2003-11-14)
-------------------------------------------------

* The use of the GCRY_WEAK_RANDOM level is now deprecated in favor of
   the new gcry_create_nonce function.

* gcry_sexp_build now supports a "%b" format to include a memory buffer.

* Minor configuration fixes.

* Interface changes relative to the 1.1.44 release:
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
gcry_create_nonce               NEW
gcry_sexp_build                 ENHANCED

Noteworthy changes in version 1.1.44 (2003-10-31)
-------------------------------------------------

* Bug fixes and more code cleanups.

* Enhanced the prime API.

* Interface changes relative to the 1.1.43 release:
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
gcry_prime_group_generator      NEW
gcry_prime_release_factors      NEW

Noteworthy changes in version 1.1.43 (2003-09-04)
-------------------------------------------------

* Bug fixes and internal code cleanups.

* Support for the Serpent cipher algorithm.

* Interface changes relative to the 1.1.42 release:
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
gcry_prime_generate             NEW
gcry_prime_check                NEW

Noteworthy changes in version 1.1.42 (2003-07-31)
-------------------------------------------------

* Major API cleanup.  Applications need to be converted to the new
   API.  See README.apichanges for hints on how to do that.  Backward
   compatibility is provided where it was possible without too much
   effort and did not collide with the overall sanitization effort.
   However, this is only for ease of transition.  NO DEPRECATED
   FUNCTION OR DATA TYPE IS CONSIDERED A PART OF THE API OR ABI AND
   WILL BE DROPPED IN THE FUTURE WITHOUT CHANGING THE SONAME OF THE
   LIBRARY.

* If gcrypt.h is included in sources compiled by GCC 3.1 or later,
   deprecated attributes will warn about use of obsolete functions and
   type definitions.  You can suppress these warnings by passing
   -Wno-deprecated-declarations to the gcc command.

* gcry_check_version must be called from now on to initialize the
   library, it is not longer optional.

* Removed `libgcrypt errno' concept.

* Libgcrypt depends on libgpg-error, a library that provides error
   codes and according functions for all GnuPG components.  Functions
   that used to return error codes asa `int' have been changed to
   return a code of type `gcry_error_t'.  All GCRYERR_* error symbols
   have been removed, since they are now contained in libgpg-error
   (GPG_ERR_*). All functions and types in libgpg-error have also been
   wrapped in Libgcrypt. The new types are gcry_err_code_t and
   gcry_err_source_t.  The new functions are gcry_err_code,
   gcry_err_source, gcry_error, gcry_err_make, gcry_error_from_errno,
   gcry_err_make_from_errno, gcry_err_code_from_errno,
   gcry_err_code_to_errno, gcry_strsource.

* New function gcry_mpi_dump to help in debugging.

* Added alternative interface for asymmetric cryptography.

* CRC-32, CRC-32 a'la RFC 1510, CRC-24 a'la RFC 2440 are now
   supported.

* SHA-256, SHA-384 and SHA-512 are now supported.

* 128 bit Twofish is now supported.

* The random module won't print the "not enough random bytes
   available" anymore.  A new progress status is issued instead.

* CBC-MAC for block ciphers is now supported, by using a
   GCRY_CIPHER_CBC_MAC cipher flag.

* CTR mode for block ciphers is now supported.

* The public RSA exponent can now be specified in key generation.

* RSA blinding is now supported and is used automatically for RSA
   decryption.  It can be explicitely disabled by using the
   `no-blinding' symbol in the `flags' S-Expression or by using the
   GCRY_AC_FLAG_DATA_NO_BLINDING flag when using the ac interface.

* gcry_sexp_canon_len does not use a `historically encoded' error
   code anymore.

* Interface changes relative to the 1.1.12 release:
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
GCRY_MPI			DEPRECATED; Use: gcry_mpi_t
GcryMPI				DEPRECATED; Use: gcry_mpi_t
GCRY_SEXP			DEPRECATED; Use: gcry_sexp_t
GcrySexp			DEPRECATED; Use: gcry_sexp_t
GCRY_CIPHER_HD			DEPRECATED; Use: gcry_cipher_hd_t
GcryCipherHd			DEPRECATED; Use: gcry_cipher_hd_t
GCRY_MD_HD			DEPRECATED; Use: gcry_md_hd_t
GcryMDHd			DEPRECATED; Use: gcry_md_hd_t
gcry_error_t			NEW
gcry_err_code_t			NEW
gcry_err_source_t		NEW
gcry_err_make			NEW
gcry_error			NEW
gcry_err_code			NEW
gcry_err_source			NEW
gcry_err_code_from_errno	NEW
gcry_err_code_to_errno		NEW
gcry_err_make_from_errno	NEW
gcry_error_from_errno		NEW
gcry_strsource			NEW
GCRYERR_{some error code}	REMOVED; Use GPG_ERR_*
                                         from libgpg-error instead.
gcry_errno                      REMOVED
gcry_sexp_canon_len		CHANGED
gcry_sexp_build_array		NEW
gcry_mpi_scan			CHANGED: New argument to separate in/out args.
gcry_mpi_print			CHANGED: Ditto.
gcry_mpi_dump			NEW
gcry_cipher_open		CHANGED
gcry_cipher_reset		NEW
gcry_cipher_register		NEW
gcry_cipher_unregister		NEW
gcry_cipher_list		NEW
gcry_cipher_algo_keylen		REPLACED macro with function.
gcry_cipher_algo_blklen		REPLACED macro with function.
gcry_pk_register		NEW
gcry_pk_unregister		NEW
gcry_pk_list			NEW
gcry_pk_decrypt			ENHANCED: Allows flag to return
                                          complete S-expression.
gcry_md_open			CHANGED
gcry_md_copy			CHANGED
gcry_md_is_enabled		NEW
gcry_md_is_secure		NEW
gcry_md_register		NEW
gcry_md_unregister		NEW
gcry_md_list			NEW
gcry_ac_data_t			NEW
gcry_ac_key_t			NEW
gcry_ac_key_pair_t		NEW
gcry_ac_handle_t		NEW
gcry_ac_key_spec_rsa_t		NEW
gcry_ac_data_new		NEW
gcry_ac_data_destroy		NEW
gcry_ac_data_set		NEW
gcry_ac_data_copy		NEW
gcry_ac_data_length		NEW
gcry_ac_data_get_name		NEW
gcry_ac_data_get_index		NEW
gcry_ac_data_clear		NEW
gcry_ac_open			NEW
gcry_ac_close			NEW
gcry_ac_key_init		NEW
gcry_ac_key_pair_generate	NEW
gcry_ac_key_pair_extract	NEW
gcry_ac_key_data_get		NEW
gcry_ac_key_test		NEW
gcry_ac_key_get_nbits		NEW
gcry_ac_key_get_grip		NEW
gcry_ac_key_destroy		NEW
gcry_ac_key_pair_destroy	NEW
gcry_ac_data_encrypt		NEW
gcry_ac_data_decrypt		NEW
gcry_ac_data_sign		NEW
gcry_ac_data_verify		NEW
gcry_ac_id_to_name		NEW
gcry_ac_name_to_id		NEW
gcry_handler_progress_t		NEW
gcry_handler_alloc_t		NEW
gcry_handler_secure_check_t	NEW
gcry_handle_realloc_t		NEW
gcry_handler_free_t		NEW
gcry_handler_no_mem_t		NEW
gcry_handler_error_t		NEW
gcry_handler_log_t		NEW
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Noteworthy changes in version 1.1.12 (2003-01-20)
-------------------------------------------------

* gcry_pk_sign, gcry_pk_verify and gcry_pk_encrypt can now handle an
   optional pkcs1 flags parameter in the S-expression.  A similar flag
   may be passed to gcry_pk_decrypt but it is only syntactically
   implemented.

* New convenience macro gcry_md_get_asnoid.

* There is now some real stuff in the manual.

Noteworthy changes in version 1.1.11 (2002-12-21)
-------------------------------------------------

* Don't export internal symbols anymore (currently only for GNU systems)

* New algorithm: MD4

* Implemented ciphertext stealing.

* Smaller bugs fixes and a few new OIDs.

* Interface changes relative to the 1.1.8 release:
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
gcry_cipher_cts                   NEW
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Noteworthy changes in version 1.1.10 (2002-09-20)
-------------------------------------------------

* Fixed shared library builds for i386, PPC and Sparc.

* Added simple benchmark tool.

* Replaced the internal mutexes by code which automatically adapts to
   the used threading library.  Currently Pth and Pthread are
   supported.  For non-ELF systems the GNU toolchain is now required..

* Added untested support to build Windows DLLs.

Noteworthy changes in version 1.1.9 (2002-08-23)
------------------------------------------------

* Support for plain old DES.

Noteworthy changes in version 1.1.8 (2002-06-25)
------------------------------------------------

* Minor cleanups and exported a few new functions.

* Interface changes relative to the 1.1.7 release:
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
gcry_mpi_div                      NEW
gcry_mpi_mod                      NEW
gcry_mpi_invm                     NEW
gcry_mpi_swap                     NEW
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Noteworthy changes in version 1.1.7 (2002-05-21)
------------------------------------------------

* Libgcrypt is now distributed under the terms of the GNU Lesser
  General Public License; see the README file for details.

* It is possible to use libgcrypt w/o intialized secure memory.

* Libgcrypt should now be thread safe after the initialization.
  gcry_control (GCRYCRL_INITIALIZATION_FINISHED,NULL,0) should have
  been called before creating additional threads.

* Interface changes relative to the 1.1.6 release:
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
GCRYCTL_DISABLE_INTERNAL_LOCKING  NEW
GCRYCTL_DISABLE_SECMEM            NEW
GCRYCTL_INITIALIZATION_FINISHED   NEW
GCRYCTL_INITIALIZATION_FINISHED_P NEW
GCRYCTL_ANY_INITIALIZATION_P      NEW
gcry_strdup                       NEW
gcry_sexp_create                  NEW
gcry_sexp_new                     NEW
gcry_set_progress_handler         NEW
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Noteworthy changes in version 1.1.6 (2002-02-07)
------------------------------------------------

* Enhanced the S-expression conversion functions.

Noteworthy changes in version 1.1.5 (2001-12-18)
------------------------------------------------

* gcry_{cipher,md}_map_name are now able to map stringified object IDs.

* New functions gcry_sexp_canon_len and gcry_cipher_mode_from_oid.

* Closed some memory leaks.

Noteworthy changes in version 1.1.4 (2001-08-03)
------------------------------------------------

* Arcfour does now work.

* Some minor fixes.

* Added a first test program

* Migrated to autoconf 2.52.

Noteworthy changes in version 1.1.3 (2001-05-31)
------------------------------------------------

* First release of Libgcrypt which is a result of splitting GnuPG
    into into libgcrypt and GnuPG.

Copyright 2001, 2002, 2003, 2004, 2007, 2008,
          2009, 2011 Free Software Foundation, Inc.
Copyright 2013 g10 Code GmbH

This file is free software; as a special exception the author gives
unlimited permission to copy and/or distribute it, with or without
modifications, as long as this notice is preserved.

This file is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY, to the extent permitted by law; without even the
implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

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