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* cipher/cipher-gcm-intel-pclmul.c (gfmul_pclmul_aggr4)
(gfmul_pclmul_aggr8): Move assembly to new GFMUL_AGGRx_ASM* macros.
(GFMUL_AGGR4_ASM_1, GFMUL_AGGR4_ASM_2, gfmul_pclmul_aggr4_le)
(GFMUL_AGGR8_ASM, gfmul_pclmul_aggr8_le)
(_gcry_polyval_intel_pclmul): New.
* cipher/cipher-gcm-siv.c (do_polyval_buf): Use polyval function
if available.
* cipher/cipher-gcm.c (_gcry_polyval_intel_pclmul): New.
(setupM): Setup 'c->u_mode.gcm.polyval_fn' with accelerated polyval
function if available.
* cipher/cipher-internal.h (gcry_cipher_handle): Add member
'u_mode.gcm.polyval_fn'.
--
Benchmark on AMD Ryzen 7 5800X:
Before:
AES | nanosecs/byte mebibytes/sec cycles/byte auto Mhz
GCM-SIV enc | 0.150 ns/B 6337 MiB/s 0.730 c/B 4849
GCM-SIV dec | 0.163 ns/B 5862 MiB/s 0.789 c/B 4850
GCM-SIV auth | 0.119 ns/B 8022 MiB/s 0.577 c/B 4850
After (enc/dec ~26% faster, auth ~43% faster):
AES | nanosecs/byte mebibytes/sec cycles/byte auto Mhz
GCM-SIV enc | 0.117 ns/B 8138 MiB/s 0.568 c/B 4850
GCM-SIV dec | 0.128 ns/B 7429 MiB/s 0.623 c/B 4850
GCM-SIV auth | 0.083 ns/B 11507 MiB/s 0.402 c/B 4851
Signed-off-by: Jussi Kivilinna <jussi.kivilinna@iki.fi>
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* cipher/cipher-gcm-siv.c (do_ctr_le32): Use bulk function if
available.
* cipher/cipher-internal.h (cipher_bulk_ops): Add 'ctr32le_enc'.
* cipher/rijndael-aesni.c (_gcry_aes_aesni_ctr32le_enc): New.
* cipher/rijndael-vaes-avx2-amd64.S
(_gcry_vaes_avx2_ctr32le_enc_amd64, .Lle_addd_*): New.
* cipher/rijndael-vaes.c (_gcry_vaes_avx2_ctr32le_enc_amd64)
(_gcry_aes_vaes_ctr32le_enc): New.
* cipher/rijndael.c (_gcry_aes_aesni_ctr32le_enc)
(_gcry_aes_vaes_ctr32le_enc): New prototypes.
(do_setkey): Add setup of 'bulk_ops->ctr32le_enc' for AES-NI and
VAES.
* tests/basic.c (check_gcm_siv_cipher): Add large test-vector for
bulk ops testing.
--
Counter mode in GCM-SIV is little-endian on first 4 bytes of
of counter block, unlike regular CTR mode which works on
big-endian full block.
Benchmark on AMD Ryzen 7 5800X:
Before:
AES | nanosecs/byte mebibytes/sec cycles/byte auto Mhz
GCM-SIV enc | 1.00 ns/B 953.2 MiB/s 4.85 c/B 4850
GCM-SIV dec | 1.01 ns/B 940.1 MiB/s 4.92 c/B 4850
GCM-SIV auth | 0.118 ns/B 8051 MiB/s 0.575 c/B 4850
After (~6x faster):
AES | nanosecs/byte mebibytes/sec cycles/byte auto Mhz
GCM-SIV enc | 0.150 ns/B 6367 MiB/s 0.727 c/B 4850
GCM-SIV dec | 0.161 ns/B 5909 MiB/s 0.783 c/B 4850
GCM-SIV auth | 0.118 ns/B 8051 MiB/s 0.574 c/B 4850
GnuPG-bug-id: T4485
Signed-off-by: Jussi Kivilinna <jussi.kivilinna@iki.fi>
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* cipher/Makefile.am: Add 'cipher-gcm-siv.c'.
* cipher/cipher-gcm-siv.c: New.
* cipher/cipher-gcm.c (_gcry_cipher_gcm_setupM): New.
* cipher/cipher-internal.h (gcry_cipher_handle): Add 'siv_keylen'.
(_gcry_cipher_gcm_setupM, _gcry_cipher_gcm_siv_encrypt)
(_gcry_cipher_gcm_siv_decrypt, _gcry_cipher_gcm_siv_set_nonce)
(_gcry_cipher_gcm_siv_authenticate)
(_gcry_cipher_gcm_siv_set_decryption_tag)
(_gcry_cipher_gcm_siv_get_tag, _gcry_cipher_gcm_siv_check_tag)
(_gcry_cipher_gcm_siv_setkey): New prototypes.
(cipher_block_bswap): New helper function.
* cipher/cipher.c (_gcry_cipher_open_internal): Add
'GCRY_CIPHER_MODE_GCM_SIV'; Refactor mode requirement checks for
better size optimization (check pointers & blocksize in same order
for all).
(cipher_setkey, cipher_reset, _gcry_cipher_setup_mode_ops)
(_gcry_cipher_setup_mode_ops, _gcry_cipher_info): Add GCM-SIV.
(_gcry_cipher_ctl): Handle 'set decryption tag' for GCM-SIV.
* doc/gcrypt.texi: Add GCM-SIV.
* src/gcrypt.h.in (GCRY_CIPHER_MODE_GCM_SIV): New.
(GCRY_SIV_BLOCK_LEN, gcry_cipher_set_decryption_tag): Add to comment
that these are also for GCM-SIV in addition to SIV mode.
* tests/basic.c (check_gcm_siv_cipher): New.
(check_cipher_modes): Check for GCM-SIV.
* tests/bench-slope.c (bench_gcm_siv_encrypt_do_bench)
(bench_gcm_siv_decrypt_do_bench, bench_gcm_siv_authenticate_do_bench)
(gcm_siv_encrypt_ops, gcm_siv_decrypt_ops)
(gcm_siv_authenticate_ops): New.
(cipher_modes): Add GCM-SIV.
(cipher_bench_one): Check key length requirement for GCM-SIV.
--
GnuPG-bug-id: T4485
Signed-off-by: Jussi Kivilinna <jussi.kivilinna@iki.fi>
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