The sed options that clear out optimization
options for rndjent.c, that must be compiled
without optimization, did not take away -O
as reported by Jason Bacon on pkgsrc-users.
While here also make it take away the -Oz
optimization option supported by gcc 12
and later.
Noteworthy changes in version 1.10.1 (2022-03-28)
-------------------------------------------------
* Bug fixes:
- Fix minor memory leaks in FIPS mode.
- Build fixes for MUSL libc.
* Other:
- More portable integrity check in FIPS mode.
- Add X9.62 OIDs to sha256 and sha512 modules.
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.
All checksums have been double-checked against existing RMD160 and
SHA512 hashes
Unfetchable distfiles (fetched conditionally?):
./security/cyrus-sasl/distinfo cyrus-sasl-dedad73e5e7a75d01a5f3d5a6702ab8ccd2ff40d.patch.v2
Noteworthy changes in version 1.9.4 (2021-08-22) [C23/A3/R4]
------------------------------------------------
* Bug fixes:
- Fix Elgamal encryption for other implementations.
[#5328,CVE-2021-33560]
- Fix alignment problem on macOS. [#5440]
- Check the input length of the point in ECDH. [#5423]
- Fix an abort in gcry_pk_get_param for "Curve25519". [#5490]
* Other features:
- Add GCM and CCM to OID mapping table for AES. [a83fb13a3b]
Noteworthy changes in version 1.9.3 (2021-04-19)
------------------------------------------------
* Bug fixes:
- Fix build problems on i386 using gcc-4.7.
- Fix checksum calculation in OCB decryption for AES on s390.
- Fix a regression in gcry_mpi_ec_add related to certain usages of
curve 25519.
- Fix a symbol not found problem on Apple M1.
- Fix for Apple iOS getentropy peculiarity.
- Make keygrip computation work for compressed points.
* Performance:
- Add x86_64 VAES/AVX2 accelerated implementation of Camellia.
- Add x86_64 VAES/AVX2 accelerated implementation of AES.
- Add VPMSUMD acceleration for GCM mode on PPC.
* Internal changes.
- Harden MPI conditional code against EM leakage.
- Harden Elgamal by introducing exponent blinding.
- Fix memory leaks in the error code paths of EdDSA.
Noteworthy changes in version 1.9.2 (2021-02-17)
------------------------------------------------
* Bug fixes:
- Fix build problem for macOS in the random code.
- Fix building with --disable-asm on x86.
- Check public key for ECDSA verify operation.
- Make sure gcry_get_config (NULL) returns a nul-terminated string.
- Fix a memory leak in the ECDH code.
- Fix a reading beyond end of input buffer in SHA2-avx2.
* Other features:
- New test driver to allow for standalone regression
tests.
Comment out some old workarounds for configure script/compiler issues,
and trust the upstream configure script again until proven wrong.
Remove hacks.mk, the grep does not match anything any longer.
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 functionx 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-2019-13626. [#4626]
- Internal cleanup of the ECC implementation.
- Support reading EC point in compressed format for some curves.
[#4951]
Noteworthy changes in version 1.8.7 (2020-10-23) [C22/A2/R8]
------------------------------------------------
* Bug fixes:
- Support opaque MPI with gcry_mpi_print. [#4872]
- Fix extra entropy collection via clock_gettime. Note that this
fallback code path is not used on any decent hardware. [#4966]
- Allow for a Unicode random seed file on Windows. [#5098]
Noteworthy changes in version 1.8.6 (2020-07-06) [C22/A2/R6]
------------------------------------------------
* Bug fixes:
- Fix build problems on OpenIndiana et al. [#4818]
- Fix GCM bug on arm64 which troubles for example OMEMO. [#4986]
- Fix wrong code execution in Poly1305 ARM/NEON implementation.
[#4833]
- Detect a div-by-zero in a debug helper tool. [#4868]
- Use a constant time mpi_inv in some cases and change the order
mpi_invm is called. [#4869]
- Fix mpi_copy to correctly handle flags of opaque MPIs.
- Fix mpi_cmp to consider +0 and -0 the same.
* Other features:
- Add OIDs from RFC-8410 as aliases for Ed25519 and Curve25519.
Noteworthy changes in version 1.8.5 (2019-08-29) [C22/A2/R5]
------------------------------------------------
* Bug fixes:
- Add mitigation against an ECDSA timing attack.
[#4626,CVE-2019-13627]
- Improve ECDSA unblinding.
* Other features:
- Provide a pkg-config file for libgcrypt.
Release-info: https://dev.gnupg.org/T4683
Noteworthy changes in version 1.8.4:
* Bug fixes:
- Fix infinite loop due to applications using fork the wrong
way.
- Fix possible leak of a few bits of secret primes to pageable
memory.
- Fix possible hang in the RNG (1.8.3 only).
- Several minor fixes.
* Performance:
- On Linux always make use of getrandom if possible and then use
its /dev/urandom behaviour.
version 1.8.3:
Bug fixes:
- Use blinding for ECDSA signing to mitigate a novel side-channel
attack.
- Fix incorrect counter overflow handling for GCM when using an IV
size other than 96 bit.
- Fix incorrect output of AES-keywrap mode for in-place encryption
on some platforms.
- Fix the gcry_mpi_ec_curve_point point validation function.
- Fix rare assertion failure in gcry_prime_check.
Noteworthy changes in version 1.8.2:
* Bug fixes:
- Do not use /dev/srandom on OpenBSD.
- Fix test suite failure on systems with large pages.
- Fix test suite to not use mmap on Windows.
- Fix fatal out of secure memory status in the s-expression parser
on heavy loaded systems.
* Other:
- Backport the auto expand secmem feature from master for use by
the forthcoming GnuPG 2.2.4.
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).
* 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 gobal 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.
* 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.
- Add ARMv8/AArch32 assembly implementation for Twofish and
Camellia.
- Add bulk processing implementation for ARMv8/AArch32.
- Improve the DRBG performance and sync the code with the Linux
version.
* 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.
* Bug fixes:
- Fix AES CTR self-check detected failure in the SSSE3 based
implementation.
- Remove gratuitous select before the getrandom syscall.
- Fix regression in mlock detection.
- Fix GOST 28147 CryptoPro-B S-box.
- Fix error code handling of mlock calls.
- Fix possible timing attack on EdDSA session key.
- Fix long standing bug in secure memory implementation which could
lead to a segv on free.
- Mitigate a flush+reload side-channel attack on RSA secret keys
dubbed "Sliding right into disaster".
Bug fixes:
- 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]
Noteworthy changes in version 1.7.7 (2017-06-02) [C21/A1/R7]
------------------------------------------------
* Bug fixes:
- Fix possible timing attack on EdDSA session key.
- Fix long standing bug in secure memory implementation which could
lead to a segv on free. [bug#3027]
All tests pass.
Noteworthy changes in version 1.7.6 (2017-01-18) [C21/A1/R6]
------------------------------------------------
* Bug fixes:
- Fix AES CTR self-check detected failure in the SSSE3 based
implementation.
- Remove gratuitous select before the getrandom syscall.
MASTER_SITES= site1 \
site2
style continuation lines to be simple repeated
MASTER_SITES+= site1
MASTER_SITES+= site2
lines. As previewed on tech-pkg. With thanks to rillig for fixing pkglint
accordingly.
Noteworthy changes in version 1.7.4 (2016-12-09) [C21/A1/R4]
------------------------------------------------
* Performance:
- More ARMv8/AArch32 improvements for AES, GCM, SHA-256, and SHA-1.
- Add ARMv8/AArch32 assembly implementation for Twofish and
Camellia.
- Add bulk processing implementation for ARMv8/AArch32.
- Add Stribog OIDs.
- Improve the DRBG performance and sync the code with the Linux
version.
* Internal changes:
- 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.
* Bug fixes:
- Fix GOST 28147 CryptoPro-B S-box.
- Fix error code handling of mlock calls.
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.
Noteworthy changes in version 1.6.5 (2016-02-09) [C20/A0/R5]
------------------------------------------------
* Mitigate side-channel attack on ECDH with Weierstrass curves
[CVE-2015-7511]. See http://www.cs.tau.ac.IL/~tromer/ecdh/ for
details.
* Fix build problem on Solaris.
Problems found locating distfiles:
Package f-prot-antivirus6-fs-bin: missing distfile fp-NetBSD.x86.32-fs-6.2.3.tar.gz
Package f-prot-antivirus6-ws-bin: missing distfile fp-NetBSD.x86.32-ws-6.2.3.tar.gz
Package libidea: missing distfile libidea-0.8.2b.tar.gz
Package openssh: missing distfile openssh-7.1p1-hpn-20150822.diff.bz2
Package uvscan: missing distfile vlp4510e.tar.Z
Otherwise, existing SHA1 digests verified and found to be the same on
the machine holding the existing distfiles (morden). All existing
SHA1 digests retained for now as an audit trail.
Noteworthy changes in version 1.6.4 (2015-09-08) [C20/A0/R4]
------------------------------------------------
* Speed up the random number generator by requiring less extra
seeding.
* New 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.
* Always verify a created RSA signature to avoid private key leaks
due to hardware failures.
* Fix alignment bug in the AESNI code on Windows > 7.
* Support FreeBSD 10 and later.
* Other minor bug fixes.
Noteworthy changes in version 1.6.3 (2015-02-27) [C20/A0/R3]
------------------------------------------------
* Use ciphertext blinding for Elgamal decryption [CVE-2014-3591].
See http://www.cs.tau.ac.il/~tromer/radioexp/ for details.
* Fixed data-dependent timing variations in modular exponentiation
[related to CVE-2015-0837, Last-Level Cache Side-Channel Attacks
are Practical].
* Improved asm support for older toolchains.
