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2015-01-16Add OCB cipher modeWerner Koch1-8/+31
* cipher/cipher-ocb.c: New. * cipher/Makefile.am (libcipher_la_SOURCES): Add cipher-ocb.c * cipher/cipher-internal.h (OCB_BLOCK_LEN, OCB_L_TABLE_SIZE): New. (gcry_cipher_handle): Add fields marks.finalize and u_mode.ocb. * cipher/cipher.c (_gcry_cipher_open_internal): Add OCB mode. (_gcry_cipher_open_internal): Setup default taglen of OCB. (cipher_reset): Clear OCB specific data. (cipher_encrypt, cipher_decrypt, _gcry_cipher_authenticate) (_gcry_cipher_gettag, _gcry_cipher_checktag): Call OCB functions. (_gcry_cipher_setiv): Add OCB specific nonce setting. (_gcry_cipher_ctl): Add GCRYCTL_FINALIZE and GCRYCTL_SET_TAGLEN * src/gcrypt.h.in (GCRYCTL_SET_TAGLEN): New. (gcry_cipher_final): New. * cipher/bufhelp.h (buf_xor_1): New. * tests/basic.c (hex2buffer): New. (check_ocb_cipher): New. (main): Call it here. Add option --cipher-modes. * tests/bench-slope.c (bench_aead_encrypt_do_bench): Call gcry_cipher_final. (bench_aead_decrypt_do_bench): Ditto. (bench_aead_authenticate_do_bench): Ditto. Check error code. (bench_ocb_encrypt_do_bench): New. (bench_ocb_decrypt_do_bench): New. (bench_ocb_authenticate_do_bench): New. (ocb_encrypt_ops): New. (ocb_decrypt_ops): New. (ocb_authenticate_ops): New. (cipher_modes): Add them. (cipher_bench_one): Skip wrong block length for OCB. * tests/benchmark.c (cipher_bench): Add field noncelen to MODES. Add OCB support. -- See the comments on top of cipher/cipher-ocb.c for the patent status of the OCB mode. The implementation has not yet been optimized and as such is not faster that the other AEAD modes. A first candidate for optimization is the double_block function. Large improvements can be expected by writing an AES ECB function to work on multiple blocks. Signed-off-by: Werner Koch <wk@gnupg.org>
2015-01-08cipher: Prepare for OCB mode.Werner Koch1-6/+13
* src/gcrypt.h.in (GCRY_CIPHER_MODE_OCB): New. -- This is merely a claim that I am working on OCB mode.
2015-01-05doc: Update yat2m to current upstream version (GnuPG).Werner Koch1-3/+100
2015-01-05doc: State that gcry_md_write et al may be used after md_read.Werner Koch1-7/+16
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2015-01-05doc: typo fixWerner Koch1-1/+1
-- GnuPG-bug-id: 1589
2014-10-08mpi: Add gcry_mpi_ec_sub.Markus Teich1-0/+9
* NEWS (gcry_mpi_ec_sub): New. * doc/gcrypt.texi (gcry_mpi_ec_sub): New. * mpi/ec.c (_gcry_mpi_ec_sub, sub_points_edwards): New. (sub_points_montgomery, sub_points_weierstrass): New stubs. * src/gcrypt-int.h (_gcry_mpi_ec_sub): New. * src/gcrypt.h.in (gcry_mpi_ec_sub): New. * src/libgcrypt.def (gcry_mpi_ec_sub): New. * src/libgcrypt.vers (gcry_mpi_ec_sub): New. * src/mpi.h (_gcry_mpi_ec_sub_points): New. * src/visibility.c (gcry_mpi_ec_sub): New. * src/visibility.h (gcry_mpi_ec_sub): New. -- This function subtracts two points on the curve. Only Twisted Edwards curves are supported with this change. Signed-off-by: Markus Teich <markus dot teich at stusta dot mhn dot de>
2014-10-08doc: Fix a configure option name.Werner Koch1-1/+1
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2014-10-02build: Document SYSROOT.Werner Koch1-4/+17
* configure.ac: Mark SYSROOT as arg var.
2014-10-02build: Support SYSROOT based config script finding.Werner Koch1-1/+1
* src/libgcrypt.m4: Add support for SYSROOT and set gpg_config_script_warn. Use AC_PATH_PROG instead of AC_PATH_TOOL because the config script is not expected to be installed with a prefix for its name * configure.ac: Print a library mismatch warning. * m4/gpg-error.m4: Update from git master. -- Also fixed the false copyright notice in libgcrypt.m4.
2014-07-25ecc: Support the non-standard 0x40 compression flag for EdDSA.Werner Koch1-4/+8
* cipher/ecc.c (ecc_generate): Check the "comp" flag for EdDSA. * cipher/ecc-eddsa.c (eddsa_encode_x_y): Add arg WITH_PREFIX. (_gcry_ecc_eddsa_encodepoint): Ditto. (_gcry_ecc_eddsa_ensure_compact): Handle the 0x40 compression prefix. (_gcry_ecc_eddsa_decodepoint): Ditto. * tests/keygrip.c: Check an compresssed with prefix Ed25519 key. * tests/t-ed25519.inp: Ditto.
2014-05-17Add Poly1305 to documentationJussi Kivilinna1-6/+36
* doc/gcrypt.texi: Add documentation for Poly1305 MACs and AEAD mode. -- Signed-off-by: Jussi Kivilinna <jussi.kivilinna@iki.fi>
2014-05-11Add ChaCha20 stream cipherJussi Kivilinna1-3/+7
* cipher/Makefile.am: Add 'chacha20.c'. * cipher/chacha20.c: New. * cipher/cipher.c (cipher_list): Add ChaCha20. * configure.ac: Add ChaCha20. * doc/gcrypt.texi: Add ChaCha20. * src/cipher.h (_gcry_cipher_spec_chacha20): New. * src/gcrypt.h.in (GCRY_CIPHER_CHACHA20): Add new algo. * tests/basic.c (MAX_DATA_LEN): Increase to 128 from 100. (check_stream_cipher): Add ChaCha20 test-vectors. (check_ciphers): Add ChaCha20. -- Patch adds Bernstein's ChaCha20 cipher to libgcrypt. Implementation is based on public domain implementations. Signed-off-by: Jussi Kivilinna <jussi.kivilinna@iki.fi>
2014-01-28sexp: Fix broken gcry_sexp_nth.Werner Koch1-2/+3
* src/sexp.c (_gcry_sexp_nth): Return a valid S-expression for a data element. (NODE): Remove unused typedef. (ST_HINT): Comment unused macro. * tests/t-sexp.c (bug_1594): New. (main): Run new test. -- Before 1.6.0 gcry_sexp_nth (list, 0) with a LIST of "(a (b 3:pqr) (c 3:456) (d 3:xyz))" returned the entire list. 1.6.0 instead returned NULL. However, this is also surprising and the expected value would be "(a)". This patch fixes this. Somewhat related to that gcry_sexp_nth returned a broken list if requesting index 1 of a list like "(n foo)". It returned just the "foo" but not as a list which is required by the S-expression specs. Due to this patch the returned value is now "(foo)". Thanks to Ludovic Courtès for pointing out these problems. GnuPG-bug-id: 1594
2014-01-19md: Add Whirlpool bug emulation feature.Werner Koch1-0/+16
* src/gcrypt.h.in (GCRY_MD_FLAG_BUGEMU1): New. * src/cipher-proto.h (gcry_md_init_t): Add arg FLAGS. Change all code to implement that flag. * cipher/md.c (gcry_md_context): Replace SECURE and FINALIZED by bit field FLAGS. Add flag BUGEMU1. Change all users. (md_open): Replace args SECURE and HMAC by FLAGS. Init flags.bugemu1. (_gcry_md_open): Add for GCRY_MD_FLAG_BUGEMU1. (md_enable): Pass bugemu1 flag to the hash init function. (_gcry_md_reset): Ditto. -- This problem is for example exhibited in the Linux cryptsetup tool. See https://bbs.archlinux.org/viewtopic.php?id=175737 . It has be been tracked down by Milan Broz. The suggested way of using the flag is: if (whirlpool_bug_assumed) { #if GCRYPT_VERSION_NUMBER >= 0x010601 err = gcry_md_open (&hd, GCRY_MD_WHIRLPOOL, GCRY_MD_FLAG_BUGEMU1) if (gpg_err_code (err) == GPG_ERR_INV_ARG) error ("Need at least Libggcrypt 1.6.1 for the fix"); else { do_hash (hd); gcry_md_close (hd); } #endif } Signed-off-by: Werner Koch <wk@gnupg.org>
2014-01-16Replace ath based mutexes by gpgrt based locks.Werner Koch1-89/+6
* configure.ac (NEED_GPG_ERROR_VERSION): Require 1.13. (gl_LOCK): Remove. * src/ath.c, src/ath.h: Remove. Remove from all files. Replace all mutexes by gpgrt based statically initialized locks. * src/global.c (global_init): Remove ath_init. (_gcry_vcontrol): Make ath install a dummy function. (print_config): Remove threads info line. * doc/gcrypt.texi: Simplify the multi-thread related documentation. -- The current code does only work on ELF systems with weak symbol support. In particular no locks were used under Windows. With the new gpgrt_lock functions from the soon to be released libgpg-error 1.13 we have a better portable scheme which also allows for static initialized mutexes. Signed-off-by: Werner Koch <wk@gnupg.org>
2014-01-13Add a function to retrieve algorithm used by MAC handlerDmitry Eremin-Solenikov1-0/+10
* cipher/mac.c (_gcry_mac_get_algo): New function, returns used algo. * src/visibility.c (gcry_mac_get_algo): New wrapper. * src/visibility.h: Hanlde gcry_mac_get_algo. * src/gcrypt-int.h (_gcry_mac_get_algo): New. * src/gcrypt.h.in (gcry_mac_get_algo): New. * src/libgcrypt.def (gcry_mac_get_algo): New. * src/libgcrypt.vers (gcry_mac_get_algo): New. * doc/gcrypt.texi: Document gcry_mac_get_algo. * tests/basic.c (check_one_mac): Verify gcry_mac_get_algo. Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
2014-01-13Correct formatting of gcry_mac_get_algo_keylen documentationDmitry Eremin-Solenikov1-1/+1
* doc/gcrypt.texi: add braces near gcry_mac_get_algo_keylen documentation. Use braces around unsigned int in gcry_mac_get_algo_keylen documentation, otherwise texinfo breaks that and uses 'int' as a function definition. Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
2014-01-10Move all helper scripts to build-aux/Werner Koch3-7686/+5
* scripts/: Rename to build-aux/. * compile, config.guess, config.rpath, config.sub * depcomp, doc/mdate-sh, doc/texinfo.tex * install-sh, ltmain.sh, missing: Move to build-aux/. * Makefile.am (EXTRA_DIST): Adjust. * configure.ac (AC_CONFIG_AUX_DIR): New. (AM_SILENT_RULES): New. Signed-off-by: Werner Koch <wk@gnupg.org>
2014-01-08Fix another minor typo.Werner Koch1-1/+1
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2014-01-08Typo fixes.Werner Koch1-1/+1
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2013-12-16doc: Change yat2m to allow arbitrary condition names.Werner Koch1-107/+266
* doc/yat2m.c (MAX_CONDITION_NESTING): New. (gpgone_defined): Remove. (condition_s, condition_stack, condition_stack_idx): New. (cond_is_active, cond_in_verbatim): New. (add_predefined_macro, set_macro, macro_set_p): New. (evaluate_conditions, push_condition, pop_condition): New. (parse_file): Rewrite to use the condition stack. (top_parse_file): Set prefined macros. (main): Change -D to define arbitrary macros. -- This change allows the use of other conditionals than "gpgone" and thus make "gpgtwoone" et al. actually work. It does now also track conditionals over included files. Signed-off-by: Werner Koch <wk@gnupg.org> From GnuPG master commit a15c35f37ed2b58805adc213029998aa3e52f038
2013-12-13doc: Minor manual fix.Werner Koch1-1/+1
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2013-12-13SHA-512: Add AVX and AVX2 implementations for x86-64Jussi Kivilinna1-0/+2
* cipher/Makefile.am: Add 'sha512-avx-amd64.S' and 'sha512-avx2-bmi2-amd64.S'. * cipher/sha512-avx-amd64.S: New. * cipher/sha512-avx2-bmi2-amd64.S: New. * cipher/sha512.c (USE_AVX, USE_AVX2): New. (SHA512_CONTEXT) [USE_AVX]: Add 'use_avx'. (SHA512_CONTEXT) [USE_AVX2]: Add 'use_avx2'. (sha512_init, sha384_init) [USE_AVX]: Initialize 'use_avx'. (sha512_init, sha384_init) [USE_AVX2]: Initialize 'use_avx2'. [USE_AVX] (_gcry_sha512_transform_amd64_avx): New. [USE_AVX2] (_gcry_sha512_transform_amd64_avx2): New. (transform) [USE_AVX2]: Add call for AVX2 implementation. (transform) [USE_AVX]: Add call for AVX implementation. * configure.ac (HAVE_GCC_INLINE_ASM_BMI2): New check. (sha512): Add 'sha512-avx-amd64.lo' and 'sha512-avx2-bmi2-amd64.lo'. * doc/gcrypt.texi: Document 'intel-cpu' and 'intel-bmi2'. * src/g10lib.h (HWF_INTEL_CPU, HWF_INTEL_BMI2): New. * src/hwfeatures.c (hwflist): Add "intel-cpu" and "intel-bmi2". * src/hwf-x86.c (detect_x86_gnuc): Check for HWF_INTEL_CPU and HWF_INTEL_BMI2. -- Patch adds fast AVX and AVX2 implementation of SHA-512 by Intel Corporation. The assembly source is licensed under 3-clause BSD license, thus compatible with LGPL2.1+. Original source can be accessed at: http://www.intel.com/p/en_US/embedded/hwsw/technology/packet-processing#docs Implementation is described in white paper "Fast SHA512 Implementations on Intel® Architecture Processors" http://www.intel.com/content/www/us/en/intelligent-systems/intel-technology/fast-sha512-implementat$ Note: AVX implementation uses SHLD instruction to emulate RORQ, since it's faster on Intel Sandy-Bridge. However, on non-Intel CPUs SHLD is much slower than RORQ, so therefore AVX implementation is (for now) limited to Intel CPUs. Note: AVX2 implementation also uses BMI2 instruction rorx, thus additional HWF flag. Benchmarks: cpu Old SSSE3 AVX/AVX2 Old vs AVX/AVX2 vs SSSE3 Intel i5-4570 10.11 c/B 7.56 c/B 6.72 c/B 1.50x 1.12x Intel i5-2450M 14.11 c/B 10.53 c/B 8.88 c/B 1.58x 1.18x Signed-off-by: Jussi Kivilinna <jussi.kivilinna@iki.fi>
2013-12-12SHA-256: Add SSSE3 implementation for x86-64Jussi Kivilinna1-0/+1
* cipher/Makefile.am: Add 'sha256-ssse3-amd64.S'. * cipher/sha256-ssse3-amd64.S: New. * cipher/sha256.c (USE_SSSE3): New. (SHA256_CONTEXT) [USE_SSSE3]: Add 'use_ssse3'. (sha256_init, sha224_init) [USE_SSSE3]: Initialize 'use_ssse3'. (transform): Rename to... (_transform): This. [USE_SSSE3] (_gcry_sha256_transform_amd64_ssse3): New. (transform): New. * configure.ac (HAVE_INTEL_SYNTAX_PLATFORM_AS): New check. (sha256): Add 'sha256-ssse3-amd64.lo'. * doc/gcrypt.texi: Document 'intel-ssse3'. * src/g10lib.h (HWF_INTEL_SSSE3): New. * src/hwfeatures.c (hwflist): Add "intel-ssse3". * src/hwf-x86.c (detect_x86_gnuc): Test for SSSE3. -- Patch adds fast SSSE3 implementation of SHA-256 by Intel Corporation. The assembly source is licensed under 3-clause BSD license, thus compatible with LGPL2.1+. Original source can be accessed at: http://www.intel.com/p/en_US/embedded/hwsw/technology/packet-processing#docs Implementation is described in white paper "Fast SHA - 256 Implementations on Intel® Architecture Processors" http://www.intel.com/content/www/us/en/intelligent-systems/intel-technology/sha-256-implementations-paper.html Benchmarks: cpu Old New Diff Intel i5-4570 13.99 c/B 10.66 c/B 1.31x Intel i5-2450M 21.53 c/B 15.79 c/B 1.36x Intel Core2 T8100 20.84 c/B 15.07 c/B 1.38x Signed-off-by: Jussi Kivilinna <jussi.kivilinna@iki.fi>
2013-12-12Add a configuration file to disable hardware features.Werner Koch1-0/+45
* src/hwfeatures.c: Inclyde syslog.h and ctype.h. (HWF_DENY_FILE): New. (my_isascii): New. (parse_hwf_deny_file): New. (_gcry_detect_hw_features): Call it. * src/mpicalc.c (main): Correctly initialize Libgcrypt. Add options "--print-config" and "--disable-hwf". Signed-off-by: Werner Koch <wk@gnupg.org>
2013-12-11random: Add a feature to close device file descriptors.Werner Koch1-0/+12
* src/gcrypt.h.in (GCRYCTL_CLOSE_RANDOM_DEVICE): New. * src/global.c (_gcry_vcontrol): Call _gcry_random_close_fds. * random/random.c (_gcry_random_close_fds): New. * random/random-csprng.c (_gcry_rngcsprng_close_fds): New. * random/random-fips.c (_gcry_rngfips_close_fds): New. * random/random-system.c (_gcry_rngsystem_close_fds): New. * random/rndlinux.c (open_device): Add arg retry. (_gcry_rndlinux_gather_random): Add mode to close open fds. * tests/random.c (check_close_random_device): New. (main): Call new test. Signed-off-by: Werner Koch <wk@gnupg.org>
2013-12-07sexp: Allow long names and white space in gcry_sexp_extract_param.Werner Koch1-10/+14
* src/sexp.c (_gcry_sexp_vextract_param): Skip white space. Support long parameter names. * tests/tsexp.c (check_extract_param): Add test cases for long parameter names and white space. Signed-off-by: Werner Koch <wk@gnupg.org>
2013-12-02mpi: Introduce 4 user flags for gcry_mpi_t.Werner Koch1-0/+5
* src/gcrypt.h.in (GCRYMPI_FLAG_USER1, GCRYMPI_FLAG_USER2) (GCRYMPI_FLAG_USER3, GCRYMPI_FLAG_USER4): New. * mpi/mpiutil.c (gcry_mpi_set_flag, gcry_mpi_clear_flag) (gcry_mpi_get_flag, _gcry_mpi_free): Implement them. (gcry_mpi_set_opaque): Keep user flags. -- The space for the flags in the MPI struct is free and thus we can help applications to make use of some flags. This is for example useful to indicate that an MPI needs special processing before use. Signed-off-by: Werner Koch <wk@gnupg.org>
2013-11-21Add GMAC to MAC APIJussi Kivilinna1-7/+27
* cipher/Makefile.am: Add 'mac-gmac.c'. * cipher/mac-gmac.c: New. * cipher/mac-internal.h (gcry_mac_handle): Add 'u.gcm'. (_gcry_mac_type_spec_gmac_aes, _gcry_mac_type_spec_gmac_twofish) (_gcry_mac_type_spec_gmac_serpent, _gcry_mac_type_spec_gmac_seed) (_gcry_mac_type_spec_gmac_camellia): New externs. * cipher/mac.c (mac_list): Add GMAC specifications. * doc/gcrypt.texi: Add mention of GMAC. * src/gcrypt.h.in (gcry_mac_algos): Add GCM algorithms. * tests/basic.c (check_one_mac): Add support for MAC IVs. (check_mac): Add support for MAC IVs and add GMAC test vectors. * tests/bench-slope.c (mac_bench): Iterate algorithm numbers to 499. * tests/benchmark.c (mac_bench): Iterate algorithm numbers to 499. -- Signed-off-by: Jussi Kivilinna <jussi.kivilinna@iki.fi>
2013-11-20Add some documentation for GCM modeJussi Kivilinna1-3/+9
* doc/gcrypt.texi: Add mention of GCM mode. -- Signed-off-by: Jussi Kivilinna <jussi.kivilinna@iki.fi>
2013-11-19Add CMAC (Cipher-based MAC) to MAC APIJussi Kivilinna1-1/+47
* cipher/Makefile.am: Add 'cipher-cmac.c' and 'mac-cmac.c'. * cipher/cipher-cmac.c: New. * cipher/cipher-internal.h (gcry_cipher_handle.u_mode): Add 'cmac'. * cipher/cipher.c (gcry_cipher_open): Rename to... (_gcry_cipher_open_internal): ...this and add CMAC. (gcry_cipher_open): New wrapper that disallows use of internal modes (CMAC) from outside. (cipher_setkey, cipher_encrypt, cipher_decrypt) (_gcry_cipher_authenticate, _gcry_cipher_gettag) (_gcry_cipher_checktag): Add handling for CMAC mode. (cipher_reset): Do not reset 'marks.key' and do not clear subkeys in 'u_mode' in CMAC mode. * cipher/mac-cmac.c: New. * cipher/mac-internal.h: Add CMAC support and algorithms. * cipher/mac.c: Add CMAC algorithms. * doc/gcrypt.texi: Add documentation for CMAC. * src/cipher.h (gcry_cipher_internal_modes): New. (_gcry_cipher_open_internal, _gcry_cipher_cmac_authenticate) (_gcry_cipher_cmac_get_tag, _gcry_cipher_cmac_check_tag) (_gcry_cipher_cmac_set_subkeys): New prototypes. * src/gcrypt.h.in (gcry_mac_algos): Add CMAC algorithms. * tests/basic.c (check_mac): Add CMAC test vectors. -- Patch adds CMAC (Cipher-based MAC) as defined in RFC 4493 and NIST Special Publication 800-38B. Internally CMAC is added to cipher module, but is available to outside only through MAC API. [v2]: - Add documentation. [v3]: - CMAC algorithm ids start from 201. - Coding style fixes. Signed-off-by: Jussi Kivilinna <jussi.kivilinna@iki.fi>
2013-11-16Add new MAC API, initially with HMACJussi Kivilinna1-3/+251
* cipher/Makefile.am: Add 'mac.c', 'mac-internal.h' and 'mac-hmac.c'. * cipher/bufhelp.h (buf_eq_const): New. * cipher/cipher-ccm.c (_gcry_cipher_ccm_tag): Use 'buf_eq_const' for constant-time compare. * cipher/mac-hmac.c: New. * cipher/mac-internal.h: New. * cipher/mac.c: New. * doc/gcrypt.texi: Add documentation for MAC API. * src/gcrypt-int.h [GPG_ERROR_VERSION_NUMBER < 1.13] (GPG_ERR_MAC_ALGO): New. * src/gcrypt.h.in (gcry_mac_handle, gcry_mac_hd_t, gcry_mac_algos) (gcry_mac_flags, gcry_mac_open, gcry_mac_close, gcry_mac_ctl) (gcry_mac_algo_info, gcry_mac_setkey, gcry_mac_setiv, gcry_mac_write) (gcry_mac_read, gcry_mac_verify, gcry_mac_get_algo_maclen) (gcry_mac_get_algo_keylen, gcry_mac_algo_name, gcry_mac_map_name) (gcry_mac_reset, gcry_mac_test_algo): New. * src/libgcrypt.def (gcry_mac_open, gcry_mac_close, gcry_mac_ctl) (gcry_mac_algo_info, gcry_mac_setkey, gcry_mac_setiv, gcry_mac_write) (gcry_mac_read, gcry_mac_verify, gcry_mac_get_algo_maclen) (gcry_mac_get_algo_keylen, gcry_mac_algo_name, gcry_mac_map_name): New. * src/libgcrypt.vers (gcry_mac_open, gcry_mac_close, gcry_mac_ctl) (gcry_mac_algo_info, gcry_mac_setkey, gcry_mac_setiv, gcry_mac_write) (gcry_mac_read, gcry_mac_verify, gcry_mac_get_algo_maclen) (gcry_mac_get_algo_keylen, gcry_mac_algo_name, gcry_mac_map_name): New. * src/visibility.c (gcry_mac_open, gcry_mac_close, gcry_mac_ctl) (gcry_mac_algo_info, gcry_mac_setkey, gcry_mac_setiv, gcry_mac_write) (gcry_mac_read, gcry_mac_verify, gcry_mac_get_algo_maclen) (gcry_mac_get_algo_keylen, gcry_mac_algo_name, gcry_mac_map_name): New. * src/visibility.h (gcry_mac_open, gcry_mac_close, gcry_mac_ctl) (gcry_mac_algo_info, gcry_mac_setkey, gcry_mac_setiv, gcry_mac_write) (gcry_mac_read, gcry_mac_verify, gcry_mac_get_algo_maclen) (gcry_mac_get_algo_keylen, gcry_mac_algo_name, gcry_mac_map_name): New. * tests/basic.c (check_one_mac, check_mac): New. (main): Call 'check_mac'. * tests/bench-slope.c (bench_print_header, bench_print_footer): Allow variable algorithm name width. (_cipher_bench, hash_bench): Update to above change. (bench_hash_do_bench): Add 'gcry_md_reset'. (bench_mac_mode, bench_mac_init, bench_mac_free, bench_mac_do_bench) (mac_ops, mac_modes, mac_bench_one, _mac_bench, mac_bench): New. (main): Add 'mac' benchmark options. * tests/benchmark.c (mac_repetitions, mac_bench): New. (main): Add 'mac' benchmark options. -- Add MAC API, with HMAC algorithms. Internally uses HMAC functionality of the MD module. [v2]: - Add documentation for MAC API. - Change length argument for gcry_mac_read from size_t to size_t* for returning number of written bytes. [v3]: - HMAC algorithm ids start from 101. - Fix coding style for new files. Signed-off-by: Jussi Kivilinna <jussi.kivilinna@iki.fi>
2013-11-08ecc: Implement the "nocomp" flag for key generation.Werner Koch1-4/+8
* cipher/ecc.c (ecc_generate): Support the "nocomp" flag. * tests/keygen.c (check_ecc_keys): Add a test for it. Signed-off-by: Werner Koch <wk@gnupg.org>
2013-11-08ecc: Make "noparam" the default and replace by "param".Werner Koch1-12/+8
* src/cipher.h (PUBKEY_FLAG_NOCOMP): New. (PUBKEY_FLAG_NOPARAM): Remove. (PUBKEY_FLAG_PARAM): New. * cipher/pubkey-util.c (_gcry_pk_util_parse_flaglist): Support the new flags and ignore the obsolete "noparam" flag. * cipher/ecc-curves.c (_gcry_ecc_fill_in_curve): Return the curve name also for curves selected by NBITS. (_gcry_mpi_ec_new): Support the "param" flag. * cipher/ecc.c (ecc_generate, ecc_sign, ecc_verify): Ditto. * tests/keygen.c (check_ecc_keys): Remove the "noparam" flag. -- This is an API change but there are not many ECC users yet and adding the "param" flag for those who really need the parameters (e.g. if private keys have been stored without the curve name, it can easily be added. Note that no version of Libgcrypt with support for "noparam" has been released but for the sake of projects already working with the master version we don't bail out on "noparam". Signed-off-by: Werner Koch <wk@gnupg.org>
2013-11-05ecc: Require "eddsa" flag for curve Ed25519.Werner Koch1-10/+5
* src/cipher.h (PUBKEY_FLAG_ECDSA): Remove. * cipher/pubkey-util.c (_gcry_pk_util_parse_flaglist): Remove "ecdsa". * cipher/ecc.c (ecc_generate, ecc_sign, ecc_verify): Require "eddsa" flag. * cipher/ecc-misc.c (_gcry_ecc_compute_public): Depend "eddsa" flag. * tests/benchmark.c, tests/keygen.c, tests/pubkey.c * tests/t-ed25519.c, tests/t-mpi-point.c: Adjust for changed flags. -- This changes make using ECDSA signatures the default for all curves. If another signing algorithm is to be used, the corresponding flag needs to be given. In particular the flags "eddsa" is now always required with curve Ed25519 to comply with the specs. This change makes the code better readable by not assuming a certain signature algorithm depending on the curve. Signed-off-by: Werner Koch <wk@gnupg.org>
2013-11-05ecc: Fully implement Ed25519 compression in ECDSA mode.Werner Koch1-1/+1
* src/ec-context.h (mpi_ec_ctx_s): Add field FLAGS. * mpi/ec.c (ec_p_init): Add arg FLAGS. Change all callers to pass it. * cipher/ecc-curves.c (point_from_keyparam): Add arg EC, parse as opaque mpi and use eddsa decoding depending on the flag. (_gcry_mpi_ec_new): Rearrange to parse Q and D after knowing the curve. Signed-off-by: Werner Koch <wk@gnupg.org>
2013-11-05mpi: Add function gcry_mpi_set_opaque_copy.Werner Koch1-0/+7
* src/gcrypt.h.in (gcry_mpi_set_opaque_copy): New. * src/visibility.c (gcry_mpi_set_opaque_copy): New. * src/visibility.h (gcry_mpi_set_opaque_copy): Mark visible. * src/libgcrypt.def, src/libgcrypt.vers: Add new API. * tests/mpitests.c (test_opaque): Add test. Signed-off-by: Werner Koch <wk@gnupg.org>
2013-10-29ecc: Add flags "noparam" and "comp".Werner Koch1-2/+36
* src/cipher.h (PUBKEY_FLAG_NOPARAM, PUBKEY_FLAG_COMP): New. * cipher/pubkey-util.c (_gcry_pk_util_parse_flaglist): Parse new flags and change code for possible faster parsing. * cipher/ecc.c (ecc_generate): Implement the "noparam" flag. (ecc_sign): Ditto. (ecc_verify): Ditto. * tests/keygen.c (check_ecc_keys): Use the "noparam" flag. * cipher/ecc.c (ecc_generate): Fix parsing of the deprecated transient-flag parameter. (ecc_verify): Do not make Q optional in the extract-param call. -- Note that the "comp" flag has not yet any effect. Signed-off-by: Werner Koch <wk@gnupg.org>
2013-10-28Fix typos in documentationJussi Kivilinna1-43/+43
* doc/gcrypt.texi: Fix some typos. -- Signed-off-by: Jussi Kivilinna <jussi.kivilinna@iki.fi>
2013-10-22Add Counter with CBC-MAC mode (CCM)Jussi Kivilinna1-4/+12
* cipher/Makefile.am: Add 'cipher-ccm.c'. * cipher/cipher-ccm.c: New. * cipher/cipher-internal.h (gcry_cipher_handle): Add 'u_mode'. (_gcry_cipher_ccm_encrypt, _gcry_cipher_ccm_decrypt) (_gcry_cipher_ccm_set_nonce, _gcry_cipher_ccm_authenticate) (_gcry_cipher_ccm_get_tag, _gcry_cipher_ccm_check_tag) (_gcry_cipher_ccm_set_lengths): New prototypes. * cipher/cipher.c (gcry_cipher_open, cipher_encrypt, cipher_decrypt) (_gcry_cipher_setiv, _gcry_cipher_authenticate, _gcry_cipher_gettag) (_gcry_cipher_checktag, gry_cipher_ctl): Add handling for CCM mode. * doc/gcrypt.texi: Add documentation for GCRY_CIPHER_MODE_CCM. * src/gcrypt.h.in (gcry_cipher_modes): Add 'GCRY_CIPHER_MODE_CCM'. (gcry_ctl_cmds): Add 'GCRYCTL_SET_CCM_LENGTHS'. (GCRY_CCM_BLOCK_LEN): New. * tests/basic.c (check_ccm_cipher): New. (check_cipher_modes): Call 'check_ccm_cipher'. * tests/benchmark.c (ccm_aead_init): New. (cipher_bench): Add handling for AEAD modes and add CCM benchmarking. -- Patch adds CCM (Counter with CBC-MAC) mode as defined in RFC 3610 and NIST Special Publication 800-38C. Example for encrypting message (split in two buffers; buf1, buf2) and authenticating additional non-encrypted data (split in two buffers; aadbuf1, aadbuf2) with authentication tag length of eigth bytes: size_t params[3]; taglen = 8; gcry_cipher_setkey(h, key, len(key)); gcry_cipher_setiv(h, nonce, len(nonce)); params[0] = len(buf1) + len(buf2); /* 0: enclen */ params[1] = len(aadbuf1) + len(aadbuf2); /* 1: aadlen */ params[2] = taglen; /* 2: authtaglen */ gcry_cipher_ctl(h, GCRYCTL_SET_CCM_LENGTHS, params, sizeof(size_t) * 3); gcry_cipher_authenticate(h, aadbuf1, len(aadbuf1)); gcry_cipher_authenticate(h, aadbuf2, len(aadbuf2)); gcry_cipher_encrypt(h, buf1, len(buf1), buf1, len(buf1)); gcry_cipher_encrypt(h, buf2, len(buf2), buf2, len(buf2)); gcry_cipher_gettag(h, tag, taglen); Example for decrypting above message and checking authentication tag: size_t params[3]; taglen = 8; gcry_cipher_setkey(h, key, len(key)); gcry_cipher_setiv(h, nonce, len(nonce)); params[0] = len(buf1) + len(buf2); /* 0: enclen */ params[1] = len(aadbuf1) + len(aadbuf2); /* 1: aadlen */ params[2] = taglen; /* 2: authtaglen */ gcry_cipher_ctl(h, GCRYCTL_SET_CCM_LENGTHS, params, sizeof(size_t) * 3); gcry_cipher_authenticate(h, aadbuf1, len(aadbuf1)); gcry_cipher_authenticate(h, aadbuf2, len(aadbuf2)); gcry_cipher_decrypt(h, buf1, len(buf1), buf1, len(buf1)); gcry_cipher_decrypt(h, buf2, len(buf2), buf2, len(buf2)); err = gcry_cipher_checktag(h, tag, taglen); if (gpg_err_code (err) == GPG_ERR_CHECKSUM) { /* Authentication failed. */ } else if (err == 0) { /* Authentication ok. */ } Example for encrypting message without additional authenticated data: size_t params[3]; taglen = 10; gcry_cipher_setkey(h, key, len(key)); gcry_cipher_setiv(h, nonce, len(nonce)); params[0] = len(buf1); /* 0: enclen */ params[1] = 0; /* 1: aadlen */ params[2] = taglen; /* 2: authtaglen */ gcry_cipher_ctl(h, GCRYCTL_SET_CCM_LENGTHS, params, sizeof(size_t) * 3); gcry_cipher_encrypt(h, buf1, len(buf1), buf1, len(buf1)); gcry_cipher_gettag(h, tag, taglen); To reset CCM state for cipher handle, one can either set new nonce or use 'gcry_cipher_reset'. This implementation reuses existing CTR mode code for encryption/decryption and is there for able to process multiple buffers that are not multiple of blocksize. AAD data maybe also be passed into gcry_cipher_authenticate in non-blocksize chunks. [v4]: GCRYCTL_SET_CCM_PARAMS => GCRY_SET_CCM_LENGTHS Signed-off-by: Jussi Kivilinna <jussi.kivilinna@iki.fi>
2013-10-22Add API to support AEAD cipher modesJussi Kivilinna1-0/+35
* cipher/cipher.c (_gcry_cipher_authenticate, _gcry_cipher_checktag) (_gcry_cipher_gettag): New. * doc/gcrypt.texi: Add documentation for new API functions. * src/visibility.c (gcry_cipher_authenticate, gcry_cipher_checktag) (gcry_cipher_gettag): New. * src/gcrypt.h.in, src/visibility.h: add declarations of these functions. * src/libgcrypt.defs, src/libgcrypt.vers: export functions. -- Authenticated Encryption with Associated Data (AEAD) cipher modes provide authentication tag that can be used to authenticate message. At the same time it allows one to specify additional (unencrypted data) that will be authenticated together with the message. This class of cipher modes requires additional API present in this commit. This patch is based on original patch by Dmitry Eremin-Solenikov. Changes in v2: - Change gcry_cipher_tag to gcry_cipher_checktag and gcry_cipher_gettag for giving tag (checktag) for decryption and reading tag (gettag) after encryption. - Change gcry_cipher_authenticate to gcry_cipher_setaad, since additional parameters needed for some AEAD modes (in this case CCM, which needs the length of encrypted data and tag for MAC initialization). - Add some documentation. Changes in v3: - Change gcry_cipher_setaad back to gcry_cipher_authenticate. Additional parameters (encrypt_len, tag_len, aad_len) for CCM will be given through GCRY_CTL_SET_CCM_LENGTHS. Changes in v4: - log_fatal => log_error Signed-off-by: Jussi Kivilinna <jussi.kivilinna@iki.fi>
2013-10-16sexp: Add function gcry_sexp_extract_param.Werner Koch1-0/+60
* src/gcrypt.h.in (_GCRY_GCC_ATTR_SENTINEL): New. (gcry_sexp_extract_param): New. * src/visibility.c (gcry_sexp_extract_param): New. * src/visibility.h (gcry_sexp_extract_param): Add hack to detect internal use. * cipher/pubkey-util.c (_gcry_pk_util_extract_mpis): Move and split into ... * src/sexp.c (_gcry_sexp_vextract_param) (_gcry_sexp_extract_param): this. Change all callers. Add support for buffer descriptors and a path option/ * tests/tsexp.c (die, hex2buffer, hex2mpi, hex2mpiopa): New. (cmp_mpihex, cmp_bufhex): New. (check_extract_param): New. Signed-off-by: Werner Koch <wk@gnupg.org>
2013-10-14pubkey: Remove duplicated flag parsing code.Werner Koch1-45/+80
* cipher/pubkey-util.c (_gcry_pk_util_preparse_encval) (_gcry_pk_util_data_to_mpi): Factor flag parsing code out to .. (parse_flag_list): New. * src/cipher.h (PUBKEY_FLAG_RAW_FLAG): New. -- A minor disadvantage of that code is that invalid flags are not anymore detected depending on the use. According to the documentation this is anyway the expected behavior. Signed-off-by: Werner Koch <wk@gnupg.org>
2013-10-02doc: Type fix.Werner Koch1-1/+1
--
2013-10-02doc: Remove note that RC2/128 is not yet supported.Werner Koch1-3/+1
--
2013-09-25ecc: Allow the name "q@eddsa" to get/set the public key.Werner Koch1-4/+10
* cipher/ecc-curves.c (_gcry_ecc_get_mpi): Support "q@eddsa". (_gcry_ecc_set_mpi): Support "q". * cipher/ecc.c (eddsa_encodepoint): Rename to ... (_gcry_ecc_eddsa_encodepoint): this and make global. Remove arg MINLEN and take from context. (eddsa_decodepoint): Rename to (_gcry_ecc_eddsa_decodepoint): this and make global. Remove arg LEN and take from context. (sign_eddsa, verify_eddsa): Take B from context. (ecc_sign, ecc_verify): Add hack to set DIALECT. (_gcry_pk_ecc_get_sexp): Use _gcry_ecc_compute_public. Handle EdDSA. * src/ec-context.h (mpi_ec_ctx_s): Add field NBITS. * mpi/ec.c (ec_p_init): Init NBITS. * tests/t-mpi-point.c (test_curve): Add Ed25519. (sample_ed25519_q): New. (context_param): Check new sample key. (hex2buffer, hex2mpiopa): New. (cmp_mpihex): Take care of opaque MPIs. Signed-off-by: Werner Koch <wk@gnupg.org>
2013-09-23pk: Add algo id GCRY_PK_ECC and deprecate ECDSA and ECDH.Werner Koch1-7/+12
* src/gcrypt.h.in (GCRY_PK_ECC): New. * cipher/pubkey.c (map_algo): New. (spec_from_algo, gcry_pk_get_param, _gcry_pk_selftest): Use it. * cipher/ecc.c (selftests_ecdsa): Report using GCRY_PK_ECC. (run_selftests): Simplify. (ecdh_names, ecdsa_names): Merge into a new ecc_names. (_gcry_pubkey_spec_ecdh, _gcry_pubkey_spec_ecdsa): Merge into new _gcry_pubkey_spec_ecc. -- The algo ids are actually a relict from Libgcrypt's former life as GnuPG's crypto code. They don't make much sense anymore and are often not needed. This patch requires some changes to the GnuPG 2.1 code (which has still not been released). For example the secret key transfer between gpg and gpg-agent (gpg --export and gpg --import). Fortunately this will also require to add usage flags to the secret key storage of gpg-agent which is is something we should have done a long time ago. Signed-off-by: Werner Koch <wk@gnupg.org>
2013-09-18pk: Simplify the public key dispatcher pubkey.c.Werner Koch1-2/+4
* src/cipher-proto.h (gcry_pk_spec_t): Add fields ALGO and FLAGS. * cipher/dsa.c (_gcry_pubkey_spec_dsa): Set these fields. * cipher/ecc.c (_gcry_pubkey_spec_ecdsa): Ditto. (_gcry_pubkey_spec_ecdh): Ditto. * cipher/rsa.c (_gcry_pubkey_spec_rsa): Ditto. * cipher/elgamal.c (_gcry_pubkey_spec_elg): Ditto (_gcry_pubkey_spec_elg_e): New. * cipher/pubkey.c: Change most code to replace the former module system by a simpler system to gain information about the algorithms. (disable_pubkey_algo): SImplified. Not anymore thread-safe, though. Signed-off-by: Werner Koch <wk@gnupg.org>
2013-09-18Rename the GOST algorithm identifiers.Werner Koch1-5/+5
-- Dots and dashes in the names are probably not a good idea. I also renamed the identifiers to names which are easier to remember. Signed-off-by: Werner Koch <wk@gnupg.org>
2013-09-18doc: fix building of ps and pdf documentationDmitry Eremin-Solenikov3-11/+1
* doc/gcrypt.texi, doc/gpl.texi, doc/lgpl.texi: fix texinfo errors. Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
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