diff options
Diffstat (limited to 'src/plugins')
| -rw-r--r-- | src/plugins/crypto_native/aes.h | 480 | ||||
| -rw-r--r-- | src/plugins/crypto_native/aes_cbc.c | 459 | ||||
| -rw-r--r-- | src/plugins/crypto_native/aes_gcm.c | 1164 | ||||
| -rw-r--r-- | src/plugins/crypto_native/ghash.h | 419 |
4 files changed, 72 insertions, 2450 deletions
diff --git a/src/plugins/crypto_native/aes.h b/src/plugins/crypto_native/aes.h deleted file mode 100644 index 40fe681e2b7..00000000000 --- a/src/plugins/crypto_native/aes.h +++ /dev/null @@ -1,480 +0,0 @@ -/* - *------------------------------------------------------------------ - * Copyright (c) 2020 Cisco and/or its affiliates. - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at: - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - *------------------------------------------------------------------ - */ - -#ifndef __aesni_h__ -#define __aesni_h__ - -typedef enum -{ - AES_KEY_128 = 0, - AES_KEY_192 = 1, - AES_KEY_256 = 2, -} aes_key_size_t; - -#define AES_KEY_ROUNDS(x) (10 + x * 2) -#define AES_KEY_BYTES(x) (16 + x * 8) - -static const u8x16 byte_mask_scale = { - 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 -}; - -static_always_inline u8x16 -aes_block_load (u8 * p) -{ - return *(u8x16u *) p; -} - -static_always_inline u8x16 -aes_enc_round (u8x16 a, u8x16 k) -{ -#if defined (__AES__) - return (u8x16) _mm_aesenc_si128 ((__m128i) a, (__m128i) k); -#elif defined (__ARM_FEATURE_CRYPTO) - return vaesmcq_u8 (vaeseq_u8 (a, u8x16_splat (0))) ^ k; -#endif -} - -#if defined(__VAES__) && defined(__AVX512F__) -static_always_inline u8x64 -aes_enc_round_x4 (u8x64 a, u8x64 k) -{ - return (u8x64) _mm512_aesenc_epi128 ((__m512i) a, (__m512i) k); -} - -static_always_inline u8x64 -aes_enc_last_round_x4 (u8x64 a, u8x64 k) -{ - return (u8x64) _mm512_aesenclast_epi128 ((__m512i) a, (__m512i) k); -} - -static_always_inline u8x64 -aes_dec_round_x4 (u8x64 a, u8x64 k) -{ - return (u8x64) _mm512_aesdec_epi128 ((__m512i) a, (__m512i) k); -} - -static_always_inline u8x64 -aes_dec_last_round_x4 (u8x64 a, u8x64 k) -{ - return (u8x64) _mm512_aesdeclast_epi128 ((__m512i) a, (__m512i) k); -} -#endif - -#ifdef __VAES__ -static_always_inline u8x32 -aes_enc_round_x2 (u8x32 a, u8x32 k) -{ - return (u8x32) _mm256_aesenc_epi128 ((__m256i) a, (__m256i) k); -} - -static_always_inline u8x32 -aes_enc_last_round_x2 (u8x32 a, u8x32 k) -{ - return (u8x32) _mm256_aesenclast_epi128 ((__m256i) a, (__m256i) k); -} - -static_always_inline u8x32 -aes_dec_round_x2 (u8x32 a, u8x32 k) -{ - return (u8x32) _mm256_aesdec_epi128 ((__m256i) a, (__m256i) k); -} - -static_always_inline u8x32 -aes_dec_last_round_x2 (u8x32 a, u8x32 k) -{ - return (u8x32) _mm256_aesdeclast_epi128 ((__m256i) a, (__m256i) k); -} -#endif - -static_always_inline u8x16 -aes_enc_last_round (u8x16 a, u8x16 k) -{ -#if defined (__AES__) - return (u8x16) _mm_aesenclast_si128 ((__m128i) a, (__m128i) k); -#elif defined (__ARM_FEATURE_CRYPTO) - return vaeseq_u8 (a, u8x16_splat (0)) ^ k; -#endif -} - -#ifdef __x86_64__ - -static_always_inline u8x16 -aes_dec_round (u8x16 a, u8x16 k) -{ - return (u8x16) _mm_aesdec_si128 ((__m128i) a, (__m128i) k); -} - -static_always_inline u8x16 -aes_dec_last_round (u8x16 a, u8x16 k) -{ - return (u8x16) _mm_aesdeclast_si128 ((__m128i) a, (__m128i) k); -} -#endif - -static_always_inline void -aes_block_store (u8 * p, u8x16 r) -{ - *(u8x16u *) p = r; -} - -static_always_inline u8x16 -aes_byte_mask (u8x16 x, u8 n_bytes) -{ - return x & (u8x16_splat (n_bytes) > byte_mask_scale); -} - -static_always_inline u8x16 -aes_load_partial (u8x16u * p, int n_bytes) -{ - ASSERT (n_bytes <= 16); -#ifdef __AVX512F__ - __m128i zero = { }; - return (u8x16) _mm_mask_loadu_epi8 (zero, (1 << n_bytes) - 1, p); -#else - u8x16 v = {}; - CLIB_ASSUME (n_bytes < 16); - clib_memcpy_fast (&v, p, n_bytes); - return v; -#endif -} - -static_always_inline void -aes_store_partial (void *p, u8x16 r, int n_bytes) -{ -#if __aarch64__ - clib_memcpy_fast (p, &r, n_bytes); -#else -#ifdef __AVX512F__ - _mm_mask_storeu_epi8 (p, (1 << n_bytes) - 1, (__m128i) r); -#else - u8x16 mask = u8x16_splat (n_bytes) > byte_mask_scale; - _mm_maskmoveu_si128 ((__m128i) r, (__m128i) mask, p); -#endif -#endif -} - - -static_always_inline u8x16 -aes_encrypt_block (u8x16 block, const u8x16 * round_keys, aes_key_size_t ks) -{ - int rounds = AES_KEY_ROUNDS (ks); - block ^= round_keys[0]; - for (int i = 1; i < rounds; i += 1) - block = aes_enc_round (block, round_keys[i]); - return aes_enc_last_round (block, round_keys[rounds]); -} - -static_always_inline u8x16 -aes_inv_mix_column (u8x16 a) -{ -#if defined (__AES__) - return (u8x16) _mm_aesimc_si128 ((__m128i) a); -#elif defined (__ARM_FEATURE_CRYPTO) - return vaesimcq_u8 (a); -#endif -} - -#ifdef __x86_64__ -#define aes_keygen_assist(a, b) \ - (u8x16) _mm_aeskeygenassist_si128((__m128i) a, b) - -/* AES-NI based AES key expansion based on code samples from - Intel(r) Advanced Encryption Standard (AES) New Instructions White Paper - (323641-001) */ - -static_always_inline void -aes128_key_assist (u8x16 * rk, u8x16 r) -{ - u8x16 t = rk[-1]; - t ^= u8x16_word_shift_left (t, 4); - t ^= u8x16_word_shift_left (t, 4); - t ^= u8x16_word_shift_left (t, 4); - rk[0] = t ^ (u8x16) u32x4_shuffle ((u32x4) r, 3, 3, 3, 3); -} - -static_always_inline void -aes128_key_expand (u8x16 *rk, u8x16u const *k) -{ - rk[0] = k[0]; - aes128_key_assist (rk + 1, aes_keygen_assist (rk[0], 0x01)); - aes128_key_assist (rk + 2, aes_keygen_assist (rk[1], 0x02)); - aes128_key_assist (rk + 3, aes_keygen_assist (rk[2], 0x04)); - aes128_key_assist (rk + 4, aes_keygen_assist (rk[3], 0x08)); - aes128_key_assist (rk + 5, aes_keygen_assist (rk[4], 0x10)); - aes128_key_assist (rk + 6, aes_keygen_assist (rk[5], 0x20)); - aes128_key_assist (rk + 7, aes_keygen_assist (rk[6], 0x40)); - aes128_key_assist (rk + 8, aes_keygen_assist (rk[7], 0x80)); - aes128_key_assist (rk + 9, aes_keygen_assist (rk[8], 0x1b)); - aes128_key_assist (rk + 10, aes_keygen_assist (rk[9], 0x36)); -} - -static_always_inline void -aes192_key_assist (u8x16 * r1, u8x16 * r2, u8x16 key_assist) -{ - u8x16 t; - r1[0] ^= t = u8x16_word_shift_left (r1[0], 4); - r1[0] ^= t = u8x16_word_shift_left (t, 4); - r1[0] ^= u8x16_word_shift_left (t, 4); - r1[0] ^= (u8x16) _mm_shuffle_epi32 ((__m128i) key_assist, 0x55); - r2[0] ^= u8x16_word_shift_left (r2[0], 4); - r2[0] ^= (u8x16) _mm_shuffle_epi32 ((__m128i) r1[0], 0xff); -} - -static_always_inline void -aes192_key_expand (u8x16 * rk, u8x16u const *k) -{ - u8x16 r1, r2; - - rk[0] = r1 = k[0]; - /* *INDENT-OFF* */ - rk[1] = r2 = (u8x16) (u64x2) { *(u64 *) (k + 1), 0 }; - /* *INDENT-ON* */ - - aes192_key_assist (&r1, &r2, aes_keygen_assist (r2, 0x1)); - rk[1] = (u8x16) _mm_shuffle_pd ((__m128d) rk[1], (__m128d) r1, 0); - rk[2] = (u8x16) _mm_shuffle_pd ((__m128d) r1, (__m128d) r2, 1); - - aes192_key_assist (&r1, &r2, aes_keygen_assist (r2, 0x2)); - rk[3] = r1; - rk[4] = r2; - - aes192_key_assist (&r1, &r2, aes_keygen_assist (r2, 0x4)); - rk[4] = (u8x16) _mm_shuffle_pd ((__m128d) rk[4], (__m128d) r1, 0); - rk[5] = (u8x16) _mm_shuffle_pd ((__m128d) r1, (__m128d) r2, 1); - - aes192_key_assist (&r1, &r2, aes_keygen_assist (r2, 0x8)); - rk[6] = r1; - rk[7] = r2; - - aes192_key_assist (&r1, &r2, aes_keygen_assist (r2, 0x10)); - rk[7] = (u8x16) _mm_shuffle_pd ((__m128d) rk[7], (__m128d) r1, 0); - rk[8] = (u8x16) _mm_shuffle_pd ((__m128d) r1, (__m128d) r2, 1); - - aes192_key_assist (&r1, &r2, aes_keygen_assist (r2, 0x20)); - rk[9] = r1; - rk[10] = r2; - - aes192_key_assist (&r1, &r2, aes_keygen_assist (r2, 0x40)); - rk[10] = (u8x16) _mm_shuffle_pd ((__m128d) rk[10], (__m128d) r1, 0); - rk[11] = (u8x16) _mm_shuffle_pd ((__m128d) r1, (__m128d) r2, 1); - - aes192_key_assist (&r1, &r2, aes_keygen_assist (r2, 0x80)); - rk[12] = r1; -} - -static_always_inline void -aes256_key_assist (u8x16 * rk, int i, u8x16 key_assist) -{ - u8x16 r, t; - rk += i; - r = rk[-2]; - r ^= t = u8x16_word_shift_left (r, 4); - r ^= t = u8x16_word_shift_left (t, 4); - r ^= u8x16_word_shift_left (t, 4); - r ^= (u8x16) u32x4_shuffle ((u32x4) key_assist, 3, 3, 3, 3); - rk[0] = r; - - if (i >= 14) - return; - - key_assist = aes_keygen_assist (rk[0], 0x0); - r = rk[-1]; - r ^= t = u8x16_word_shift_left (r, 4); - r ^= t = u8x16_word_shift_left (t, 4); - r ^= u8x16_word_shift_left (t, 4); - r ^= (u8x16) u32x4_shuffle ((u32x4) key_assist, 2, 2, 2, 2); - rk[1] = r; -} - -static_always_inline void -aes256_key_expand (u8x16 * rk, u8x16u const *k) -{ - rk[0] = k[0]; - rk[1] = k[1]; - aes256_key_assist (rk, 2, aes_keygen_assist (rk[1], 0x01)); - aes256_key_assist (rk, 4, aes_keygen_assist (rk[3], 0x02)); - aes256_key_assist (rk, 6, aes_keygen_assist (rk[5], 0x04)); - aes256_key_assist (rk, 8, aes_keygen_assist (rk[7], 0x08)); - aes256_key_assist (rk, 10, aes_keygen_assist (rk[9], 0x10)); - aes256_key_assist (rk, 12, aes_keygen_assist (rk[11], 0x20)); - aes256_key_assist (rk, 14, aes_keygen_assist (rk[13], 0x40)); -} -#endif - -#ifdef __aarch64__ - -static const u8x16 aese_prep_mask1 = - { 13, 14, 15, 12, 13, 14, 15, 12, 13, 14, 15, 12, 13, 14, 15, 12 }; -static const u8x16 aese_prep_mask2 = - { 12, 13, 14, 15, 12, 13, 14, 15, 12, 13, 14, 15, 12, 13, 14, 15 }; - -static_always_inline void -aes128_key_expand_round_neon (u8x16 * rk, u32 rcon) -{ - u8x16 r, t, last_round = rk[-1], z = { }; - r = vqtbl1q_u8 (last_round, aese_prep_mask1); - r = vaeseq_u8 (r, z); - r ^= (u8x16) vdupq_n_u32 (rcon); - r ^= last_round; - r ^= t = vextq_u8 (z, last_round, 12); - r ^= t = vextq_u8 (z, t, 12); - r ^= vextq_u8 (z, t, 12); - rk[0] = r; -} - -static_always_inline void -aes128_key_expand (u8x16 *rk, u8x16u const *k) -{ - rk[0] = k[0]; - aes128_key_expand_round_neon (rk + 1, 0x01); - aes128_key_expand_round_neon (rk + 2, 0x02); - aes128_key_expand_round_neon (rk + 3, 0x04); - aes128_key_expand_round_neon (rk + 4, 0x08); - aes128_key_expand_round_neon (rk + 5, 0x10); - aes128_key_expand_round_neon (rk + 6, 0x20); - aes128_key_expand_round_neon (rk + 7, 0x40); - aes128_key_expand_round_neon (rk + 8, 0x80); - aes128_key_expand_round_neon (rk + 9, 0x1b); - aes128_key_expand_round_neon (rk + 10, 0x36); -} - -static_always_inline void -aes192_key_expand_round_neon (u8x8 * rk, u32 rcon) -{ - u8x8 r, last_round = rk[-1], z = { }; - u8x16 r2, z2 = { }; - - r2 = (u8x16) vdupq_lane_u64 ((uint64x1_t) last_round, 0); - r2 = vqtbl1q_u8 (r2, aese_prep_mask1); - r2 = vaeseq_u8 (r2, z2); - r2 ^= (u8x16) vdupq_n_u32 (rcon); - - r = (u8x8) vdup_laneq_u64 ((u64x2) r2, 0); - r ^= rk[-3]; - r ^= vext_u8 (z, rk[-3], 4); - rk[0] = r; - - r = rk[-2] ^ vext_u8 (r, z, 4); - r ^= vext_u8 (z, r, 4); - rk[1] = r; - - if (rcon == 0x80) - return; - - r = rk[-1] ^ vext_u8 (r, z, 4); - r ^= vext_u8 (z, r, 4); - rk[2] = r; -} - -static_always_inline void -aes192_key_expand (u8x16 * ek, const u8x16u * k) -{ - u8x8 *rk = (u8x8 *) ek; - ek[0] = k[0]; - rk[2] = *(u8x8u *) (k + 1); - aes192_key_expand_round_neon (rk + 3, 0x01); - aes192_key_expand_round_neon (rk + 6, 0x02); - aes192_key_expand_round_neon (rk + 9, 0x04); - aes192_key_expand_round_neon (rk + 12, 0x08); - aes192_key_expand_round_neon (rk + 15, 0x10); - aes192_key_expand_round_neon (rk + 18, 0x20); - aes192_key_expand_round_neon (rk + 21, 0x40); - aes192_key_expand_round_neon (rk + 24, 0x80); -} - - -static_always_inline void -aes256_key_expand_round_neon (u8x16 * rk, u32 rcon) -{ - u8x16 r, t, z = { }; - - r = vqtbl1q_u8 (rk[-1], rcon ? aese_prep_mask1 : aese_prep_mask2); - r = vaeseq_u8 (r, z); - if (rcon) - r ^= (u8x16) vdupq_n_u32 (rcon); - r ^= rk[-2]; - r ^= t = vextq_u8 (z, rk[-2], 12); - r ^= t = vextq_u8 (z, t, 12); - r ^= vextq_u8 (z, t, 12); - rk[0] = r; -} - -static_always_inline void -aes256_key_expand (u8x16 *rk, u8x16u const *k) -{ - rk[0] = k[0]; - rk[1] = k[1]; - aes256_key_expand_round_neon (rk + 2, 0x01); - aes256_key_expand_round_neon (rk + 3, 0); - aes256_key_expand_round_neon (rk + 4, 0x02); - aes256_key_expand_round_neon (rk + 5, 0); - aes256_key_expand_round_neon (rk + 6, 0x04); - aes256_key_expand_round_neon (rk + 7, 0); - aes256_key_expand_round_neon (rk + 8, 0x08); - aes256_key_expand_round_neon (rk + 9, 0); - aes256_key_expand_round_neon (rk + 10, 0x10); - aes256_key_expand_round_neon (rk + 11, 0); - aes256_key_expand_round_neon (rk + 12, 0x20); - aes256_key_expand_round_neon (rk + 13, 0); - aes256_key_expand_round_neon (rk + 14, 0x40); -} - -#endif - -static_always_inline void -aes_key_expand (u8x16 * key_schedule, u8 const *key, aes_key_size_t ks) -{ - switch (ks) - { - case AES_KEY_128: - aes128_key_expand (key_schedule, (u8x16u const *) key); - break; - case AES_KEY_192: - aes192_key_expand (key_schedule, (u8x16u const *) key); - break; - case AES_KEY_256: - aes256_key_expand (key_schedule, (u8x16u const *) key); - break; - } -} - -static_always_inline void -aes_key_enc_to_dec (u8x16 * ke, u8x16 * kd, aes_key_size_t ks) -{ - int rounds = AES_KEY_ROUNDS (ks); - - kd[rounds] = ke[0]; - kd[0] = ke[rounds]; - - for (int i = 1; i < (rounds / 2); i++) - { - kd[rounds - i] = aes_inv_mix_column (ke[i]); - kd[i] = aes_inv_mix_column (ke[rounds - i]); - } - - kd[rounds / 2] = aes_inv_mix_column (ke[rounds / 2]); -} - -#endif /* __aesni_h__ */ - -/* - * fd.io coding-style-patch-verification: ON - * - * Local Variables: - * eval: (c-set-style "gnu") - * End: - */ diff --git a/src/plugins/crypto_native/aes_cbc.c b/src/plugins/crypto_native/aes_cbc.c index 02d96b31c79..1f21dc149fa 100644 --- a/src/plugins/crypto_native/aes_cbc.c +++ b/src/plugins/crypto_native/aes_cbc.c @@ -19,7 +19,7 @@ #include <vnet/plugin/plugin.h> #include <vnet/crypto/crypto.h> #include <crypto_native/crypto_native.h> -#include <crypto_native/aes.h> +#include <vppinfra/crypto/aes_cbc.h> #if __GNUC__ > 4 && !__clang__ && CLIB_DEBUG == 0 #pragma GCC optimize ("O3") @@ -48,412 +48,6 @@ #define u32xN_splat u32x4_splat #endif -typedef struct -{ - u8x16 encrypt_key[15]; - u8xN decrypt_key[15]; -} aes_cbc_key_data_t; - -static_always_inline void __clib_unused -aes_cbc_dec (u8x16 * k, u8x16u * src, u8x16u * dst, u8x16u * iv, int count, - int rounds) -{ - u8x16 r[4], c[4], f; - - f = iv[0]; - while (count >= 64) - { - clib_prefetch_load (src + 8); - clib_prefetch_load (dst + 8); - - c[0] = r[0] = src[0]; - c[1] = r[1] = src[1]; - c[2] = r[2] = src[2]; - c[3] = r[3] = src[3]; - -#if __x86_64__ - r[0] ^= k[0]; - r[1] ^= k[0]; - r[2] ^= k[0]; - r[3] ^= k[0]; - - for (int i = 1; i < rounds; i++) - { - r[0] = aes_dec_round (r[0], k[i]); - r[1] = aes_dec_round (r[1], k[i]); - r[2] = aes_dec_round (r[2], k[i]); - r[3] = aes_dec_round (r[3], k[i]); - } - - r[0] = aes_dec_last_round (r[0], k[rounds]); - r[1] = aes_dec_last_round (r[1], k[rounds]); - r[2] = aes_dec_last_round (r[2], k[rounds]); - r[3] = aes_dec_last_round (r[3], k[rounds]); -#else - for (int i = 0; i < rounds - 1; i++) - { - r[0] = vaesimcq_u8 (vaesdq_u8 (r[0], k[i])); - r[1] = vaesimcq_u8 (vaesdq_u8 (r[1], k[i])); - r[2] = vaesimcq_u8 (vaesdq_u8 (r[2], k[i])); - r[3] = vaesimcq_u8 (vaesdq_u8 (r[3], k[i])); - } - r[0] = vaesdq_u8 (r[0], k[rounds - 1]) ^ k[rounds]; - r[1] = vaesdq_u8 (r[1], k[rounds - 1]) ^ k[rounds]; - r[2] = vaesdq_u8 (r[2], k[rounds - 1]) ^ k[rounds]; - r[3] = vaesdq_u8 (r[3], k[rounds - 1]) ^ k[rounds]; -#endif - dst[0] = r[0] ^ f; - dst[1] = r[1] ^ c[0]; - dst[2] = r[2] ^ c[1]; - dst[3] = r[3] ^ c[2]; - f = c[3]; - - count -= 64; - src += 4; - dst += 4; - } - - while (count > 0) - { - c[0] = r[0] = src[0]; -#if __x86_64__ - r[0] ^= k[0]; - for (int i = 1; i < rounds; i++) - r[0] = aes_dec_round (r[0], k[i]); - r[0] = aes_dec_last_round (r[0], k[rounds]); -#else - c[0] = r[0] = src[0]; - for (int i = 0; i < rounds - 1; i++) - r[0] = vaesimcq_u8 (vaesdq_u8 (r[0], k[i])); - r[0] = vaesdq_u8 (r[0], k[rounds - 1]) ^ k[rounds]; -#endif - dst[0] = r[0] ^ f; - f = c[0]; - - count -= 16; - src += 1; - dst += 1; - } -} - -#if __x86_64__ -#if defined(__VAES__) && defined(__AVX512F__) - -static_always_inline u8x64 -aes_block_load_x4 (u8 * src[], int i) -{ - u8x64 r = { }; - r = u8x64_insert_u8x16 (r, aes_block_load (src[0] + i), 0); - r = u8x64_insert_u8x16 (r, aes_block_load (src[1] + i), 1); - r = u8x64_insert_u8x16 (r, aes_block_load (src[2] + i), 2); - r = u8x64_insert_u8x16 (r, aes_block_load (src[3] + i), 3); - return r; -} - -static_always_inline void -aes_block_store_x4 (u8 * dst[], int i, u8x64 r) -{ - aes_block_store (dst[0] + i, u8x64_extract_u8x16 (r, 0)); - aes_block_store (dst[1] + i, u8x64_extract_u8x16 (r, 1)); - aes_block_store (dst[2] + i, u8x64_extract_u8x16 (r, 2)); - aes_block_store (dst[3] + i, u8x64_extract_u8x16 (r, 3)); -} - -static_always_inline u8x64 -aes4_cbc_dec_permute (u8x64 a, u8x64 b) -{ - return (u8x64) u64x8_shuffle2 (a, b, 6, 7, 8, 9, 10, 11, 12, 13); -} - -static_always_inline void -aes4_cbc_dec (u8x64 *k, u8x64u *src, u8x64u *dst, u8x16u *iv, int count, - aes_key_size_t rounds) -{ - u8x64 f, r[4], c[4] = { }; - __mmask8 m; - int i, n_blocks = count >> 4; - - f = (u8x64) _mm512_mask_loadu_epi64 (_mm512_setzero_si512 (), 0xc0, - (__m512i *) (iv - 3)); - - while (n_blocks >= 16) - { - c[0] = src[0]; - c[1] = src[1]; - c[2] = src[2]; - c[3] = src[3]; - - r[0] = c[0] ^ k[0]; - r[1] = c[1] ^ k[0]; - r[2] = c[2] ^ k[0]; - r[3] = c[3] ^ k[0]; - - for (i = 1; i < rounds; i++) - { - r[0] = aes_dec_round_x4 (r[0], k[i]); - r[1] = aes_dec_round_x4 (r[1], k[i]); - r[2] = aes_dec_round_x4 (r[2], k[i]); - r[3] = aes_dec_round_x4 (r[3], k[i]); - } - - r[0] = aes_dec_last_round_x4 (r[0], k[i]); - r[1] = aes_dec_last_round_x4 (r[1], k[i]); - r[2] = aes_dec_last_round_x4 (r[2], k[i]); - r[3] = aes_dec_last_round_x4 (r[3], k[i]); - - dst[0] = r[0] ^= aes4_cbc_dec_permute (f, c[0]); - dst[1] = r[1] ^= aes4_cbc_dec_permute (c[0], c[1]); - dst[2] = r[2] ^= aes4_cbc_dec_permute (c[1], c[2]); - dst[3] = r[3] ^= aes4_cbc_dec_permute (c[2], c[3]); - f = c[3]; - - n_blocks -= 16; - src += 4; - dst += 4; - } - - if (n_blocks >= 12) - { - c[0] = src[0]; - c[1] = src[1]; - c[2] = src[2]; - - r[0] = c[0] ^ k[0]; - r[1] = c[1] ^ k[0]; - r[2] = c[2] ^ k[0]; - - for (i = 1; i < rounds; i++) - { - r[0] = aes_dec_round_x4 (r[0], k[i]); - r[1] = aes_dec_round_x4 (r[1], k[i]); - r[2] = aes_dec_round_x4 (r[2], k[i]); - } - - r[0] = aes_dec_last_round_x4 (r[0], k[i]); - r[1] = aes_dec_last_round_x4 (r[1], k[i]); - r[2] = aes_dec_last_round_x4 (r[2], k[i]); - - dst[0] = r[0] ^= aes4_cbc_dec_permute (f, c[0]); - dst[1] = r[1] ^= aes4_cbc_dec_permute (c[0], c[1]); - dst[2] = r[2] ^= aes4_cbc_dec_permute (c[1], c[2]); - f = c[2]; - - n_blocks -= 12; - src += 3; - dst += 3; - } - else if (n_blocks >= 8) - { - c[0] = src[0]; - c[1] = src[1]; - - r[0] = c[0] ^ k[0]; - r[1] = c[1] ^ k[0]; - - for (i = 1; i < rounds; i++) - { - r[0] = aes_dec_round_x4 (r[0], k[i]); - r[1] = aes_dec_round_x4 (r[1], k[i]); - } - - r[0] = aes_dec_last_round_x4 (r[0], k[i]); - r[1] = aes_dec_last_round_x4 (r[1], k[i]); - - dst[0] = r[0] ^= aes4_cbc_dec_permute (f, c[0]); - dst[1] = r[1] ^= aes4_cbc_dec_permute (c[0], c[1]); - f = c[1]; - - n_blocks -= 8; - src += 2; - dst += 2; - } - else if (n_blocks >= 4) - { - c[0] = src[0]; - - r[0] = c[0] ^ k[0]; - - for (i = 1; i < rounds; i++) - { - r[0] = aes_dec_round_x4 (r[0], k[i]); - } - - r[0] = aes_dec_last_round_x4 (r[0], k[i]); - - dst[0] = r[0] ^= aes4_cbc_dec_permute (f, c[0]); - f = c[0]; - - n_blocks -= 4; - src += 1; - dst += 1; - } - - if (n_blocks > 0) - { - m = (1 << (n_blocks * 2)) - 1; - c[0] = (u8x64) _mm512_mask_loadu_epi64 ((__m512i) c[0], m, - (__m512i *) src); - f = aes4_cbc_dec_permute (f, c[0]); - r[0] = c[0] ^ k[0]; - for (i = 1; i < rounds; i++) - r[0] = aes_dec_round_x4 (r[0], k[i]); - r[0] = aes_dec_last_round_x4 (r[0], k[i]); - _mm512_mask_storeu_epi64 ((__m512i *) dst, m, (__m512i) (r[0] ^ f)); - } -} -#elif defined(__VAES__) - -static_always_inline u8x32 -aes_block_load_x2 (u8 *src[], int i) -{ - u8x32 r = {}; - r = u8x32_insert_lo (r, aes_block_load (src[0] + i)); - r = u8x32_insert_hi (r, aes_block_load (src[1] + i)); - return r; -} - -static_always_inline void -aes_block_store_x2 (u8 *dst[], int i, u8x32 r) -{ - aes_block_store (dst[0] + i, u8x32_extract_lo (r)); - aes_block_store (dst[1] + i, u8x32_extract_hi (r)); -} - -static_always_inline u8x32 -aes2_cbc_dec_permute (u8x32 a, u8x32 b) -{ - return (u8x32) u64x4_shuffle2 ((u64x4) a, (u64x4) b, 2, 3, 4, 5); -} - -static_always_inline void -aes2_cbc_dec (u8x32 *k, u8x32u *src, u8x32u *dst, u8x16u *iv, int count, - aes_key_size_t rounds) -{ - u8x32 f = {}, r[4], c[4] = {}; - int i, n_blocks = count >> 4; - - f = u8x32_insert_hi (f, *iv); - - while (n_blocks >= 8) - { - c[0] = src[0]; - c[1] = src[1]; - c[2] = src[2]; - c[3] = src[3]; - - r[0] = c[0] ^ k[0]; - r[1] = c[1] ^ k[0]; - r[2] = c[2] ^ k[0]; - r[3] = c[3] ^ k[0]; - - for (i = 1; i < rounds; i++) - { - r[0] = aes_dec_round_x2 (r[0], k[i]); - r[1] = aes_dec_round_x2 (r[1], k[i]); - r[2] = aes_dec_round_x2 (r[2], k[i]); - r[3] = aes_dec_round_x2 (r[3], k[i]); - } - - r[0] = aes_dec_last_round_x2 (r[0], k[i]); - r[1] = aes_dec_last_round_x2 (r[1], k[i]); - r[2] = aes_dec_last_round_x2 (r[2], k[i]); - r[3] = aes_dec_last_round_x2 (r[3], k[i]); - - dst[0] = r[0] ^= aes2_cbc_dec_permute (f, c[0]); - dst[1] = r[1] ^= aes2_cbc_dec_permute (c[0], c[1]); - dst[2] = r[2] ^= aes2_cbc_dec_permute (c[1], c[2]); - dst[3] = r[3] ^= aes2_cbc_dec_permute (c[2], c[3]); - f = c[3]; - - n_blocks -= 8; - src += 4; - dst += 4; - } - - if (n_blocks >= 6) - { - c[0] = src[0]; - c[1] = src[1]; - c[2] = src[2]; - - r[0] = c[0] ^ k[0]; - r[1] = c[1] ^ k[0]; - r[2] = c[2] ^ k[0]; - - for (i = 1; i < rounds; i++) - { - r[0] = aes_dec_round_x2 (r[0], k[i]); - r[1] = aes_dec_round_x2 (r[1], k[i]); - r[2] = aes_dec_round_x2 (r[2], k[i]); - } - - r[0] = aes_dec_last_round_x2 (r[0], k[i]); - r[1] = aes_dec_last_round_x2 (r[1], k[i]); - r[2] = aes_dec_last_round_x2 (r[2], k[i]); - - dst[0] = r[0] ^= aes2_cbc_dec_permute (f, c[0]); - dst[1] = r[1] ^= aes2_cbc_dec_permute (c[0], c[1]); - dst[2] = r[2] ^= aes2_cbc_dec_permute (c[1], c[2]); - f = c[2]; - - n_blocks -= 6; - src += 3; - dst += 3; - } - else if (n_blocks >= 4) - { - c[0] = src[0]; - c[1] = src[1]; - - r[0] = c[0] ^ k[0]; - r[1] = c[1] ^ k[0]; - - for (i = 1; i < rounds; i++) - { - r[0] = aes_dec_round_x2 (r[0], k[i]); - r[1] = aes_dec_round_x2 (r[1], k[i]); - } - - r[0] = aes_dec_last_round_x2 (r[0], k[i]); - r[1] = aes_dec_last_round_x2 (r[1], k[i]); - - dst[0] = r[0] ^= aes2_cbc_dec_permute (f, c[0]); - dst[1] = r[1] ^= aes2_cbc_dec_permute (c[0], c[1]); - f = c[1]; - - n_blocks -= 4; - src += 2; - dst += 2; - } - else if (n_blocks >= 2) - { - c[0] = src[0]; - r[0] = c[0] ^ k[0]; - - for (i = 1; i < rounds; i++) - r[0] = aes_dec_round_x2 (r[0], k[i]); - - r[0] = aes_dec_last_round_x2 (r[0], k[i]); - dst[0] = r[0] ^= aes2_cbc_dec_permute (f, c[0]); - f = c[0]; - - n_blocks -= 2; - src += 1; - dst += 1; - } - - if (n_blocks > 0) - { - u8x16 rl = *(u8x16u *) src ^ u8x32_extract_lo (k[0]); - for (i = 1; i < rounds; i++) - rl = aes_dec_round (rl, u8x32_extract_lo (k[i])); - rl = aes_dec_last_round (rl, u8x32_extract_lo (k[i])); - *(u8x16 *) dst = rl ^ u8x32_extract_hi (f); - } -} -#endif -#endif - static_always_inline u32 aes_ops_enc_aes_cbc (vlib_main_t * vm, vnet_crypto_op_t * ops[], u32 n_ops, aes_key_size_t ks) @@ -658,28 +252,6 @@ decrypt: return n_ops; } -static_always_inline void * -aes_cbc_key_exp (vnet_crypto_key_t * key, aes_key_size_t ks) -{ - u8x16 e[15], d[15]; - aes_cbc_key_data_t *kd; - kd = clib_mem_alloc_aligned (sizeof (*kd), CLIB_CACHE_LINE_BYTES); - aes_key_expand (e, key->data, ks); - aes_key_enc_to_dec (e, d, ks); - for (int i = 0; i < AES_KEY_ROUNDS (ks) + 1; i++) - { -#if defined(__VAES__) && defined(__AVX512F__) - kd->decrypt_key[i] = u8x64_splat_u8x16 (d[i]); -#elif defined(__VAES__) - kd->decrypt_key[i] = u8x32_splat_u8x16 (d[i]); -#else - kd->decrypt_key[i] = d[i]; -#endif - kd->encrypt_key[i] = e[i]; - } - return kd; -} - #define foreach_aes_cbc_handler_type _(128) _(192) _(256) #define _(x) \ @@ -689,12 +261,37 @@ static u32 aes_ops_dec_aes_cbc_##x \ static u32 aes_ops_enc_aes_cbc_##x \ (vlib_main_t * vm, vnet_crypto_op_t * ops[], u32 n_ops) \ { return aes_ops_enc_aes_cbc (vm, ops, n_ops, AES_KEY_##x); } \ -static void * aes_cbc_key_exp_##x (vnet_crypto_key_t *key) \ -{ return aes_cbc_key_exp (key, AES_KEY_##x); } foreach_aes_cbc_handler_type; #undef _ +static void * +aes_cbc_key_exp_128 (vnet_crypto_key_t *key) +{ + aes_cbc_key_data_t *kd; + kd = clib_mem_alloc_aligned (sizeof (*kd), CLIB_CACHE_LINE_BYTES); + clib_aes128_cbc_key_expand (kd, key->data); + return kd; +} + +static void * +aes_cbc_key_exp_192 (vnet_crypto_key_t *key) +{ + aes_cbc_key_data_t *kd; + kd = clib_mem_alloc_aligned (sizeof (*kd), CLIB_CACHE_LINE_BYTES); + clib_aes192_cbc_key_expand (kd, key->data); + return kd; +} + +static void * +aes_cbc_key_exp_256 (vnet_crypto_key_t *key) +{ + aes_cbc_key_data_t *kd; + kd = clib_mem_alloc_aligned (sizeof (*kd), CLIB_CACHE_LINE_BYTES); + clib_aes256_cbc_key_expand (kd, key->data); + return kd; +} + #include <fcntl.h> clib_error_t * diff --git a/src/plugins/crypto_native/aes_gcm.c b/src/plugins/crypto_native/aes_gcm.c index c13665e3fb1..6589d411975 100644 --- a/src/plugins/crypto_native/aes_gcm.c +++ b/src/plugins/crypto_native/aes_gcm.c @@ -19,1098 +19,26 @@ #include <vnet/plugin/plugin.h> #include <vnet/crypto/crypto.h> #include <crypto_native/crypto_native.h> -#include <crypto_native/aes.h> -#include <crypto_native/ghash.h> +#include <vppinfra/crypto/aes_gcm.h> -#if __GNUC__ > 4 && !__clang__ && CLIB_DEBUG == 0 -#pragma GCC optimize ("O3") +#if __GNUC__ > 4 && !__clang__ && CLIB_DEBUG == 0 +#pragma GCC optimize("O3") #endif -#if defined(__VAES__) && defined(__AVX512F__) -#define NUM_HI 32 -#else -#define NUM_HI 8 -#endif - -typedef struct -{ - /* pre-calculated hash key values */ - const u8x16 Hi[NUM_HI]; - /* extracted AES key */ - const u8x16 Ke[15]; -#if defined(__VAES__) && defined(__AVX512F__) - const u8x64 Ke4[15]; -#endif -} aes_gcm_key_data_t; - -typedef struct -{ - u32 counter; - union - { - u32x4 Y; - u32x16 Y4; - }; -} aes_gcm_counter_t; - -typedef enum -{ - AES_GCM_F_WITH_GHASH = (1 << 0), - AES_GCM_F_LAST_ROUND = (1 << 1), - AES_GCM_F_ENCRYPT = (1 << 2), - AES_GCM_F_DECRYPT = (1 << 3), -} aes_gcm_flags_t; - -static const u32x4 ctr_inv_1 = { 0, 0, 0, 1 << 24 }; - -static_always_inline void -aes_gcm_enc_first_round (u8x16 * r, aes_gcm_counter_t * ctr, u8x16 k, - int n_blocks) -{ - if (PREDICT_TRUE ((u8) ctr->counter < (256 - 2 * n_blocks))) - { - for (int i = 0; i < n_blocks; i++) - { - r[i] = k ^ (u8x16) ctr->Y; - ctr->Y += ctr_inv_1; - } - ctr->counter += n_blocks; - } - else - { - for (int i = 0; i < n_blocks; i++) - { - r[i] = k ^ (u8x16) ctr->Y; - ctr->counter++; - ctr->Y[3] = clib_host_to_net_u32 (ctr->counter + 1); - } - } -} - -static_always_inline void -aes_gcm_enc_round (u8x16 * r, u8x16 k, int n_blocks) -{ - for (int i = 0; i < n_blocks; i++) - r[i] = aes_enc_round (r[i], k); -} - -static_always_inline void -aes_gcm_enc_last_round (u8x16 * r, u8x16 * d, u8x16 const *k, - int rounds, int n_blocks) -{ - - /* additional ronuds for AES-192 and AES-256 */ - for (int i = 10; i < rounds; i++) - aes_gcm_enc_round (r, k[i], n_blocks); - - for (int i = 0; i < n_blocks; i++) - d[i] ^= aes_enc_last_round (r[i], k[rounds]); -} - -static_always_inline u8x16 -aes_gcm_ghash_blocks (u8x16 T, aes_gcm_key_data_t * kd, - u8x16u * in, int n_blocks) -{ - ghash_data_t _gd, *gd = &_gd; - u8x16 *Hi = (u8x16 *) kd->Hi + NUM_HI - n_blocks; - ghash_mul_first (gd, u8x16_reflect (in[0]) ^ T, Hi[0]); - for (int i = 1; i < n_blocks; i++) - ghash_mul_next (gd, u8x16_reflect ((in[i])), Hi[i]); - ghash_reduce (gd); - ghash_reduce2 (gd); - return ghash_final (gd); -} - -static_always_inline u8x16 -aes_gcm_ghash (u8x16 T, aes_gcm_key_data_t * kd, u8x16u * in, u32 n_left) -{ - - while (n_left >= 128) - { - T = aes_gcm_ghash_blocks (T, kd, in, 8); - n_left -= 128; - in += 8; - } - - if (n_left >= 64) - { - T = aes_gcm_ghash_blocks (T, kd, in, 4); - n_left -= 64; - in += 4; - } - - if (n_left >= 32) - { - T = aes_gcm_ghash_blocks (T, kd, in, 2); - n_left -= 32; - in += 2; - } - - if (n_left >= 16) - { - T = aes_gcm_ghash_blocks (T, kd, in, 1); - n_left -= 16; - in += 1; - } - - if (n_left) - { - u8x16 r = aes_load_partial (in, n_left); - T = ghash_mul (u8x16_reflect (r) ^ T, kd->Hi[NUM_HI - 1]); - } - return T; -} - -static_always_inline __clib_unused u8x16 -aes_gcm_calc (u8x16 T, aes_gcm_key_data_t *kd, u8x16 *d, - aes_gcm_counter_t *ctr, u8x16u *inv, u8x16u *outv, int rounds, - int n, int last_block_bytes, aes_gcm_flags_t f) -{ - u8x16 r[n]; - ghash_data_t _gd = { }, *gd = &_gd; - const u8x16 *rk = (u8x16 *) kd->Ke; - int ghash_blocks = (f & AES_GCM_F_ENCRYPT) ? 4 : n, gc = 1; - u8x16 *Hi = (u8x16 *) kd->Hi + NUM_HI - ghash_blocks; - - clib_prefetch_load (inv + 4); - - /* AES rounds 0 and 1 */ - aes_gcm_enc_first_round (r, ctr, rk[0], n); - aes_gcm_enc_round (r, rk[1], n); - - /* load data - decrypt round */ - if (f & AES_GCM_F_DECRYPT) - { - for (int i = 0; i < n - ((f & AES_GCM_F_LAST_ROUND) != 0); i++) - d[i] = inv[i]; - - if (f & AES_GCM_F_LAST_ROUND) - d[n - 1] = aes_load_partial (inv + n - 1, last_block_bytes); - } - - /* GHASH multiply block 1 */ - if (f & AES_GCM_F_WITH_GHASH) - ghash_mul_first (gd, u8x16_reflect (d[0]) ^ T, Hi[0]); - - /* AES rounds 2 and 3 */ - aes_gcm_enc_round (r, rk[2], n); - aes_gcm_enc_round (r, rk[3], n); - - /* GHASH multiply block 2 */ - if ((f & AES_GCM_F_WITH_GHASH) && gc++ < ghash_blocks) - ghash_mul_next (gd, u8x16_reflect (d[1]), Hi[1]); - - /* AES rounds 4 and 5 */ - aes_gcm_enc_round (r, rk[4], n); - aes_gcm_enc_round (r, rk[5], n); - - /* GHASH multiply block 3 */ - if ((f & AES_GCM_F_WITH_GHASH) && gc++ < ghash_blocks) - ghash_mul_next (gd, u8x16_reflect (d[2]), Hi[2]); - - /* AES rounds 6 and 7 */ - aes_gcm_enc_round (r, rk[6], n); - aes_gcm_enc_round (r, rk[7], n); - - /* GHASH multiply block 4 */ - if ((f & AES_GCM_F_WITH_GHASH) && gc++ < ghash_blocks) - ghash_mul_next (gd, u8x16_reflect (d[3]), Hi[3]); - - /* AES rounds 8 and 9 */ - aes_gcm_enc_round (r, rk[8], n); - aes_gcm_enc_round (r, rk[9], n); - - /* GHASH reduce 1st step */ - if (f & AES_GCM_F_WITH_GHASH) - ghash_reduce (gd); - - /* load data - encrypt round */ - if (f & AES_GCM_F_ENCRYPT) - { - for (int i = 0; i < n - ((f & AES_GCM_F_LAST_ROUND) != 0); i++) - d[i] = inv[i]; - - if (f & AES_GCM_F_LAST_ROUND) - d[n - 1] = aes_load_partial (inv + n - 1, last_block_bytes); - } - - /* GHASH reduce 2nd step */ - if (f & AES_GCM_F_WITH_GHASH) - ghash_reduce2 (gd); - - /* AES last round(s) */ - aes_gcm_enc_last_round (r, d, rk, rounds, n); - - /* store data */ - for (int i = 0; i < n - ((f & AES_GCM_F_LAST_ROUND) != 0); i++) - outv[i] = d[i]; - - if (f & AES_GCM_F_LAST_ROUND) - aes_store_partial (outv + n - 1, d[n - 1], last_block_bytes); - - /* GHASH final step */ - if (f & AES_GCM_F_WITH_GHASH) - T = ghash_final (gd); - - return T; -} - -static_always_inline __clib_unused u8x16 -aes_gcm_calc_double (u8x16 T, aes_gcm_key_data_t *kd, u8x16 *d, - aes_gcm_counter_t *ctr, u8x16u *inv, u8x16u *outv, - int rounds, aes_gcm_flags_t f) -{ - u8x16 r[4]; - ghash_data_t _gd, *gd = &_gd; - const u8x16 *rk = (u8x16 *) kd->Ke; - u8x16 *Hi = (u8x16 *) kd->Hi + NUM_HI - 8; - - /* AES rounds 0 and 1 */ - aes_gcm_enc_first_round (r, ctr, rk[0], 4); - aes_gcm_enc_round (r, rk[1], 4); - - /* load 4 blocks of data - decrypt round */ - if (f & AES_GCM_F_DECRYPT) - { - d[0] = inv[0]; - d[1] = inv[1]; - d[2] = inv[2]; - d[3] = inv[3]; - } - - /* GHASH multiply block 0 */ - ghash_mul_first (gd, u8x16_reflect (d[0]) ^ T, Hi[0]); - - /* AES rounds 2 and 3 */ - aes_gcm_enc_round (r, rk[2], 4); - aes_gcm_enc_round (r, rk[3], 4); - - /* GHASH multiply block 1 */ - ghash_mul_next (gd, u8x16_reflect (d[1]), Hi[1]); - - /* AES rounds 4 and 5 */ - aes_gcm_enc_round (r, rk[4], 4); - aes_gcm_enc_round (r, rk[5], 4); - - /* GHASH multiply block 2 */ - ghash_mul_next (gd, u8x16_reflect (d[2]), Hi[2]); - - /* AES rounds 6 and 7 */ - aes_gcm_enc_round (r, rk[6], 4); - aes_gcm_enc_round (r, rk[7], 4); - - /* GHASH multiply block 3 */ - ghash_mul_next (gd, u8x16_reflect (d[3]), Hi[3]); - - /* AES rounds 8 and 9 */ - aes_gcm_enc_round (r, rk[8], 4); - aes_gcm_enc_round (r, rk[9], 4); - - /* load 4 blocks of data - encrypt round */ - if (f & AES_GCM_F_ENCRYPT) - { - d[0] = inv[0]; - d[1] = inv[1]; - d[2] = inv[2]; - d[3] = inv[3]; - } - - /* AES last round(s) */ - aes_gcm_enc_last_round (r, d, rk, rounds, 4); - - /* store 4 blocks of data */ - outv[0] = d[0]; - outv[1] = d[1]; - outv[2] = d[2]; - outv[3] = d[3]; - - /* load next 4 blocks of data data - decrypt round */ - if (f & AES_GCM_F_DECRYPT) - { - d[0] = inv[4]; - d[1] = inv[5]; - d[2] = inv[6]; - d[3] = inv[7]; - } - - /* GHASH multiply block 4 */ - ghash_mul_next (gd, u8x16_reflect (d[0]), Hi[4]); - - /* AES rounds 0, 1 and 2 */ - aes_gcm_enc_first_round (r, ctr, rk[0], 4); - aes_gcm_enc_round (r, rk[1], 4); - aes_gcm_enc_round (r, rk[2], 4); - - /* GHASH multiply block 5 */ - ghash_mul_next (gd, u8x16_reflect (d[1]), Hi[5]); - - /* AES rounds 3 and 4 */ - aes_gcm_enc_round (r, rk[3], 4); - aes_gcm_enc_round (r, rk[4], 4); - - /* GHASH multiply block 6 */ - ghash_mul_next (gd, u8x16_reflect (d[2]), Hi[6]); - - /* AES rounds 5 and 6 */ - aes_gcm_enc_round (r, rk[5], 4); - aes_gcm_enc_round (r, rk[6], 4); - - /* GHASH multiply block 7 */ - ghash_mul_next (gd, u8x16_reflect (d[3]), Hi[7]); - - /* AES rounds 7 and 8 */ - aes_gcm_enc_round (r, rk[7], 4); - aes_gcm_enc_round (r, rk[8], 4); - - /* GHASH reduce 1st step */ - ghash_reduce (gd); - - /* AES round 9 */ - aes_gcm_enc_round (r, rk[9], 4); - - /* load data - encrypt round */ - if (f & AES_GCM_F_ENCRYPT) - { - d[0] = inv[4]; - d[1] = inv[5]; - d[2] = inv[6]; - d[3] = inv[7]; - } - - /* GHASH reduce 2nd step */ - ghash_reduce2 (gd); - - /* AES last round(s) */ - aes_gcm_enc_last_round (r, d, rk, rounds, 4); - - /* store data */ - outv[4] = d[0]; - outv[5] = d[1]; - outv[6] = d[2]; - outv[7] = d[3]; - - /* GHASH final step */ - return ghash_final (gd); -} - -static_always_inline __clib_unused u8x16 -aes_gcm_ghash_last (u8x16 T, aes_gcm_key_data_t *kd, u8x16 *d, int n_blocks, - int n_bytes) -{ - ghash_data_t _gd, *gd = &_gd; - u8x16 *Hi = (u8x16 *) kd->Hi + NUM_HI - n_blocks; - - if (n_bytes) - d[n_blocks - 1] = aes_byte_mask (d[n_blocks - 1], n_bytes); - - ghash_mul_first (gd, u8x16_reflect (d[0]) ^ T, Hi[0]); - if (n_blocks > 1) - ghash_mul_next (gd, u8x16_reflect (d[1]), Hi[1]); - if (n_blocks > 2) - ghash_mul_next (gd, u8x16_reflect (d[2]), Hi[2]); - if (n_blocks > 3) - ghash_mul_next (gd, u8x16_reflect (d[3]), Hi[3]); - ghash_reduce (gd); - ghash_reduce2 (gd); - return ghash_final (gd); -} - -#if defined(__VAES__) && defined(__AVX512F__) -static const u32x16 ctr_inv_1234 = { - 0, 0, 0, 1 << 24, 0, 0, 0, 2 << 24, 0, 0, 0, 3 << 24, 0, 0, 0, 4 << 24, -}; - -static const u32x16 ctr_inv_4444 = { - 0, 0, 0, 4 << 24, 0, 0, 0, 4 << 24, 0, 0, 0, 4 << 24, 0, 0, 0, 4 << 24 -}; - -static const u32x16 ctr_1234 = { - 1, 0, 0, 0, 2, 0, 0, 0, 3, 0, 0, 0, 4, 0, 0, 0, -}; - -static_always_inline void -aes4_gcm_enc_first_round (u8x64 * r, aes_gcm_counter_t * ctr, u8x64 k, int n) -{ - u8 last_byte = (u8) ctr->counter; - int i = 0; - - /* As counter is stored in network byte order for performance reasons we - are incrementing least significant byte only except in case where we - overlow. As we are processing four 512-blocks in parallel except the - last round, overflow can happen only when n == 4 */ - - if (n == 4) - for (; i < 2; i++) - { - r[i] = k ^ (u8x64) ctr->Y4; - ctr->Y4 += ctr_inv_4444; - } - - if (n == 4 && PREDICT_TRUE (last_byte == 241)) - { - u32x16 Yc, Yr = (u32x16) u8x64_reflect_u8x16 ((u8x64) ctr->Y4); - - for (; i < n; i++) - { - r[i] = k ^ (u8x64) ctr->Y4; - Yc = u32x16_splat (ctr->counter + 4 * (i + 1)) + ctr_1234; - Yr = (u32x16) u32x16_mask_blend (Yr, Yc, 0x1111); - ctr->Y4 = (u32x16) u8x64_reflect_u8x16 ((u8x64) Yr); - } - } - else - { - for (; i < n; i++) - { - r[i] = k ^ (u8x64) ctr->Y4; - ctr->Y4 += ctr_inv_4444; - } - } - ctr->counter += n * 4; -} - -static_always_inline void -aes4_gcm_enc_round (u8x64 * r, u8x64 k, int n_blocks) -{ - for (int i = 0; i < n_blocks; i++) - r[i] = aes_enc_round_x4 (r[i], k); -} - -static_always_inline void -aes4_gcm_enc_last_round (u8x64 * r, u8x64 * d, u8x64 const *k, - int rounds, int n_blocks) -{ - - /* additional ronuds for AES-192 and AES-256 */ - for (int i = 10; i < rounds; i++) - aes4_gcm_enc_round (r, k[i], n_blocks); - - for (int i = 0; i < n_blocks; i++) - d[i] ^= aes_enc_last_round_x4 (r[i], k[rounds]); -} - -static_always_inline u8x16 -aes4_gcm_calc (u8x16 T, aes_gcm_key_data_t * kd, u8x64 * d, - aes_gcm_counter_t * ctr, u8x16u * in, u8x16u * out, - int rounds, int n, int last_4block_bytes, aes_gcm_flags_t f) -{ - ghash4_data_t _gd, *gd = &_gd; - const u8x64 *rk = (u8x64 *) kd->Ke4; - int i, ghash_blocks, gc = 1; - u8x64u *Hi4, *inv = (u8x64u *) in, *outv = (u8x64u *) out; - u8x64 r[4]; - u64 byte_mask = _bextr_u64 (-1LL, 0, last_4block_bytes); - - if (f & AES_GCM_F_ENCRYPT) - { - /* during encryption we either hash four 512-bit blocks from previous - round or we don't hash at all */ - ghash_blocks = 4; - Hi4 = (u8x64u *) (kd->Hi + NUM_HI - ghash_blocks * 4); - } - else - { - /* during deccryption we hash 1..4 512-bit blocks from current round */ - ghash_blocks = n; - int n_128bit_blocks = n * 4; - /* if this is last round of decryption, we may have less than 4 - 128-bit blocks in the last 512-bit data block, so we need to adjust - Hi4 pointer accordingly */ - if (f & AES_GCM_F_LAST_ROUND) - n_128bit_blocks += ((last_4block_bytes + 15) >> 4) - 4; - Hi4 = (u8x64u *) (kd->Hi + NUM_HI - n_128bit_blocks); - } - - /* AES rounds 0 and 1 */ - aes4_gcm_enc_first_round (r, ctr, rk[0], n); - aes4_gcm_enc_round (r, rk[1], n); - - /* load 4 blocks of data - decrypt round */ - if (f & AES_GCM_F_DECRYPT) - { - for (i = 0; i < n - ((f & AES_GCM_F_LAST_ROUND) != 0); i++) - d[i] = inv[i]; - - if (f & AES_GCM_F_LAST_ROUND) - d[i] = u8x64_mask_load (u8x64_splat (0), inv + i, byte_mask); - } - - /* GHASH multiply block 0 */ - if (f & AES_GCM_F_WITH_GHASH) - ghash4_mul_first (gd, u8x64_reflect_u8x16 (d[0]) ^ - u8x64_insert_u8x16 (u8x64_splat (0), T, 0), Hi4[0]); - - /* AES rounds 2 and 3 */ - aes4_gcm_enc_round (r, rk[2], n); - aes4_gcm_enc_round (r, rk[3], n); - - /* GHASH multiply block 1 */ - if ((f & AES_GCM_F_WITH_GHASH) && gc++ < ghash_blocks) - ghash4_mul_next (gd, u8x64_reflect_u8x16 (d[1]), Hi4[1]); - - /* AES rounds 4 and 5 */ - aes4_gcm_enc_round (r, rk[4], n); - aes4_gcm_enc_round (r, rk[5], n); - - /* GHASH multiply block 2 */ - if ((f & AES_GCM_F_WITH_GHASH) && gc++ < ghash_blocks) - ghash4_mul_next (gd, u8x64_reflect_u8x16 (d[2]), Hi4[2]); - - /* AES rounds 6 and 7 */ - aes4_gcm_enc_round (r, rk[6], n); - aes4_gcm_enc_round (r, rk[7], n); - - /* GHASH multiply block 3 */ - if ((f & AES_GCM_F_WITH_GHASH) && gc++ < ghash_blocks) - ghash4_mul_next (gd, u8x64_reflect_u8x16 (d[3]), Hi4[3]); - - /* load 4 blocks of data - decrypt round */ - if (f & AES_GCM_F_ENCRYPT) - { - for (i = 0; i < n - ((f & AES_GCM_F_LAST_ROUND) != 0); i++) - d[i] = inv[i]; - - if (f & AES_GCM_F_LAST_ROUND) - d[i] = u8x64_mask_load (u8x64_splat (0), inv + i, byte_mask); - } - - /* AES rounds 8 and 9 */ - aes4_gcm_enc_round (r, rk[8], n); - aes4_gcm_enc_round (r, rk[9], n); - - /* AES last round(s) */ - aes4_gcm_enc_last_round (r, d, rk, rounds, n); - - /* store 4 blocks of data */ - for (i = 0; i < n - ((f & AES_GCM_F_LAST_ROUND) != 0); i++) - outv[i] = d[i]; - - if (f & AES_GCM_F_LAST_ROUND) - u8x64_mask_store (d[i], outv + i, byte_mask); - - /* GHASH reduce 1st step */ - ghash4_reduce (gd); - - /* GHASH reduce 2nd step */ - ghash4_reduce2 (gd); - - /* GHASH final step */ - return ghash4_final (gd); -} - -static_always_inline u8x16 -aes4_gcm_calc_double (u8x16 T, aes_gcm_key_data_t * kd, u8x64 * d, - aes_gcm_counter_t * ctr, u8x16u * in, u8x16u * out, - int rounds, aes_gcm_flags_t f) -{ - u8x64 r[4]; - ghash4_data_t _gd, *gd = &_gd; - const u8x64 *rk = (u8x64 *) kd->Ke4; - u8x64 *Hi4 = (u8x64 *) (kd->Hi + NUM_HI - 32); - u8x64u *inv = (u8x64u *) in, *outv = (u8x64u *) out; - - /* AES rounds 0 and 1 */ - aes4_gcm_enc_first_round (r, ctr, rk[0], 4); - aes4_gcm_enc_round (r, rk[1], 4); - - /* load 4 blocks of data - decrypt round */ - if (f & AES_GCM_F_DECRYPT) - for (int i = 0; i < 4; i++) - d[i] = inv[i]; - - /* GHASH multiply block 0 */ - ghash4_mul_first (gd, u8x64_reflect_u8x16 (d[0]) ^ - u8x64_insert_u8x16 (u8x64_splat (0), T, 0), Hi4[0]); - - /* AES rounds 2 and 3 */ - aes4_gcm_enc_round (r, rk[2], 4); - aes4_gcm_enc_round (r, rk[3], 4); - - /* GHASH multiply block 1 */ - ghash4_mul_next (gd, u8x64_reflect_u8x16 (d[1]), Hi4[1]); - - /* AES rounds 4 and 5 */ - aes4_gcm_enc_round (r, rk[4], 4); - aes4_gcm_enc_round (r, rk[5], 4); - - /* GHASH multiply block 2 */ - ghash4_mul_next (gd, u8x64_reflect_u8x16 (d[2]), Hi4[2]); - - /* AES rounds 6 and 7 */ - aes4_gcm_enc_round (r, rk[6], 4); - aes4_gcm_enc_round (r, rk[7], 4); - - /* GHASH multiply block 3 */ - ghash4_mul_next (gd, u8x64_reflect_u8x16 (d[3]), Hi4[3]); - - /* AES rounds 8 and 9 */ - aes4_gcm_enc_round (r, rk[8], 4); - aes4_gcm_enc_round (r, rk[9], 4); - - /* load 4 blocks of data - encrypt round */ - if (f & AES_GCM_F_ENCRYPT) - for (int i = 0; i < 4; i++) - d[i] = inv[i]; - - /* AES last round(s) */ - aes4_gcm_enc_last_round (r, d, rk, rounds, 4); - - /* store 4 blocks of data */ - for (int i = 0; i < 4; i++) - outv[i] = d[i]; - - /* load 4 blocks of data - decrypt round */ - if (f & AES_GCM_F_DECRYPT) - for (int i = 0; i < 4; i++) - d[i] = inv[i + 4]; - - /* GHASH multiply block 3 */ - ghash4_mul_next (gd, u8x64_reflect_u8x16 (d[0]), Hi4[4]); - - /* AES rounds 0 and 1 */ - aes4_gcm_enc_first_round (r, ctr, rk[0], 4); - aes4_gcm_enc_round (r, rk[1], 4); - - /* GHASH multiply block 5 */ - ghash4_mul_next (gd, u8x64_reflect_u8x16 (d[1]), Hi4[5]); - - /* AES rounds 2 and 3 */ - aes4_gcm_enc_round (r, rk[2], 4); - aes4_gcm_enc_round (r, rk[3], 4); - - /* GHASH multiply block 6 */ - ghash4_mul_next (gd, u8x64_reflect_u8x16 (d[2]), Hi4[6]); - - /* AES rounds 4 and 5 */ - aes4_gcm_enc_round (r, rk[4], 4); - aes4_gcm_enc_round (r, rk[5], 4); - - /* GHASH multiply block 7 */ - ghash4_mul_next (gd, u8x64_reflect_u8x16 (d[3]), Hi4[7]); - - /* AES rounds 6 and 7 */ - aes4_gcm_enc_round (r, rk[6], 4); - aes4_gcm_enc_round (r, rk[7], 4); - - /* GHASH reduce 1st step */ - ghash4_reduce (gd); - - /* AES rounds 8 and 9 */ - aes4_gcm_enc_round (r, rk[8], 4); - aes4_gcm_enc_round (r, rk[9], 4); - - /* GHASH reduce 2nd step */ - ghash4_reduce2 (gd); - - /* load 4 blocks of data - encrypt round */ - if (f & AES_GCM_F_ENCRYPT) - for (int i = 0; i < 4; i++) - d[i] = inv[i + 4]; - - /* AES last round(s) */ - aes4_gcm_enc_last_round (r, d, rk, rounds, 4); - - /* store 4 blocks of data */ - for (int i = 0; i < 4; i++) - outv[i + 4] = d[i]; - - /* GHASH final step */ - return ghash4_final (gd); -} - -static_always_inline u8x16 -aes4_gcm_ghash_last (u8x16 T, aes_gcm_key_data_t * kd, u8x64 * d, - int n, int last_4block_bytes) -{ - ghash4_data_t _gd, *gd = &_gd; - u8x64u *Hi4; - int n_128bit_blocks; - u64 byte_mask = _bextr_u64 (-1LL, 0, last_4block_bytes); - n_128bit_blocks = (n - 1) * 4 + ((last_4block_bytes + 15) >> 4); - Hi4 = (u8x64u *) (kd->Hi + NUM_HI - n_128bit_blocks); - - d[n - 1] = u8x64_mask_blend (u8x64_splat (0), d[n - 1], byte_mask); - ghash4_mul_first (gd, u8x64_reflect_u8x16 (d[0]) ^ - u8x64_insert_u8x16 (u8x64_splat (0), T, 0), Hi4[0]); - if (n > 1) - ghash4_mul_next (gd, u8x64_reflect_u8x16 (d[1]), Hi4[1]); - if (n > 2) - ghash4_mul_next (gd, u8x64_reflect_u8x16 (d[2]), Hi4[2]); - if (n > 3) - ghash4_mul_next (gd, u8x64_reflect_u8x16 (d[3]), Hi4[3]); - ghash4_reduce (gd); - ghash4_reduce2 (gd); - return ghash4_final (gd); -} -#endif - -static_always_inline u8x16 -aes_gcm_enc (u8x16 T, aes_gcm_key_data_t * kd, aes_gcm_counter_t * ctr, - u8x16u * inv, u8x16u * outv, u32 n_left, int rounds) -{ - aes_gcm_flags_t f = AES_GCM_F_ENCRYPT; - - if (n_left == 0) - return T; - -#if defined(__VAES__) && defined(__AVX512F__) - u8x64 d4[4]; - if (n_left < 256) - { - f |= AES_GCM_F_LAST_ROUND; - if (n_left > 192) - { - n_left -= 192; - aes4_gcm_calc (T, kd, d4, ctr, inv, outv, rounds, 4, n_left, f); - return aes4_gcm_ghash_last (T, kd, d4, 4, n_left); - } - else if (n_left > 128) - { - n_left -= 128; - aes4_gcm_calc (T, kd, d4, ctr, inv, outv, rounds, 3, n_left, f); - return aes4_gcm_ghash_last (T, kd, d4, 3, n_left); - } - else if (n_left > 64) - { - n_left -= 64; - aes4_gcm_calc (T, kd, d4, ctr, inv, outv, rounds, 2, n_left, f); - return aes4_gcm_ghash_last (T, kd, d4, 2, n_left); - } - else - { - aes4_gcm_calc (T, kd, d4, ctr, inv, outv, rounds, 1, n_left, f); - return aes4_gcm_ghash_last (T, kd, d4, 1, n_left); - } - } - - aes4_gcm_calc (T, kd, d4, ctr, inv, outv, rounds, 4, 0, f); - - /* next */ - n_left -= 256; - outv += 16; - inv += 16; - - f |= AES_GCM_F_WITH_GHASH; - - while (n_left >= 512) - { - T = aes4_gcm_calc_double (T, kd, d4, ctr, inv, outv, rounds, f); - - /* next */ - n_left -= 512; - outv += 32; - inv += 32; - } - - while (n_left >= 256) - { - T = aes4_gcm_calc (T, kd, d4, ctr, inv, outv, rounds, 4, 0, f); - - /* next */ - n_left -= 256; - outv += 16; - inv += 16; - } - - if (n_left == 0) - return aes4_gcm_ghash_last (T, kd, d4, 4, 64); - - f |= AES_GCM_F_LAST_ROUND; - - if (n_left > 192) - { - n_left -= 192; - T = aes4_gcm_calc (T, kd, d4, ctr, inv, outv, rounds, 4, n_left, f); - return aes4_gcm_ghash_last (T, kd, d4, 4, n_left); - } - - if (n_left > 128) - { - n_left -= 128; - T = aes4_gcm_calc (T, kd, d4, ctr, inv, outv, rounds, 3, n_left, f); - return aes4_gcm_ghash_last (T, kd, d4, 3, n_left); - } - - if (n_left > 64) - { - n_left -= 64; - T = aes4_gcm_calc (T, kd, d4, ctr, inv, outv, rounds, 2, n_left, f); - return aes4_gcm_ghash_last (T, kd, d4, 2, n_left); - } - - T = aes4_gcm_calc (T, kd, d4, ctr, inv, outv, rounds, 1, n_left, f); - return aes4_gcm_ghash_last (T, kd, d4, 1, n_left); -#else - u8x16 d[4]; - if (n_left < 64) - { - f |= AES_GCM_F_LAST_ROUND; - if (n_left > 48) - { - n_left -= 48; - aes_gcm_calc (T, kd, d, ctr, inv, outv, rounds, 4, n_left, f); - return aes_gcm_ghash_last (T, kd, d, 4, n_left); - } - else if (n_left > 32) - { - n_left -= 32; - aes_gcm_calc (T, kd, d, ctr, inv, outv, rounds, 3, n_left, f); - return aes_gcm_ghash_last (T, kd, d, 3, n_left); - } - else if (n_left > 16) - { - n_left -= 16; - aes_gcm_calc (T, kd, d, ctr, inv, outv, rounds, 2, n_left, f); - return aes_gcm_ghash_last (T, kd, d, 2, n_left); - } - else - { - aes_gcm_calc (T, kd, d, ctr, inv, outv, rounds, 1, n_left, f); - return aes_gcm_ghash_last (T, kd, d, 1, n_left); - } - } - - aes_gcm_calc (T, kd, d, ctr, inv, outv, rounds, 4, 0, f); - - /* next */ - n_left -= 64; - outv += 4; - inv += 4; - - f |= AES_GCM_F_WITH_GHASH; - - while (n_left >= 128) - { - T = aes_gcm_calc_double (T, kd, d, ctr, inv, outv, rounds, f); - - /* next */ - n_left -= 128; - outv += 8; - inv += 8; - } - - if (n_left >= 64) - { - T = aes_gcm_calc (T, kd, d, ctr, inv, outv, rounds, 4, 0, f); - - /* next */ - n_left -= 64; - outv += 4; - inv += 4; - } - - if (n_left == 0) - return aes_gcm_ghash_last (T, kd, d, 4, 0); - - f |= AES_GCM_F_LAST_ROUND; - - if (n_left > 48) - { - n_left -= 48; - T = aes_gcm_calc (T, kd, d, ctr, inv, outv, rounds, 4, n_left, f); - return aes_gcm_ghash_last (T, kd, d, 4, n_left); - } - - if (n_left > 32) - { - n_left -= 32; - T = aes_gcm_calc (T, kd, d, ctr, inv, outv, rounds, 3, n_left, f); - return aes_gcm_ghash_last (T, kd, d, 3, n_left); - } - - if (n_left > 16) - { - n_left -= 16; - T = aes_gcm_calc (T, kd, d, ctr, inv, outv, rounds, 2, n_left, f); - return aes_gcm_ghash_last (T, kd, d, 2, n_left); - } - - T = aes_gcm_calc (T, kd, d, ctr, inv, outv, rounds, 1, n_left, f); - return aes_gcm_ghash_last (T, kd, d, 1, n_left); -#endif -} - -static_always_inline u8x16 -aes_gcm_dec (u8x16 T, aes_gcm_key_data_t * kd, aes_gcm_counter_t * ctr, - u8x16u * inv, u8x16u * outv, u32 n_left, int rounds) -{ - aes_gcm_flags_t f = AES_GCM_F_WITH_GHASH | AES_GCM_F_DECRYPT; -#if defined(__VAES__) && defined(__AVX512F__) - u8x64 d4[4] = { }; - - while (n_left >= 512) - { - T = aes4_gcm_calc_double (T, kd, d4, ctr, inv, outv, rounds, f); - - /* next */ - n_left -= 512; - outv += 32; - inv += 32; - } - - while (n_left >= 256) - { - T = aes4_gcm_calc (T, kd, d4, ctr, inv, outv, rounds, 4, 0, f); - - /* next */ - n_left -= 256; - outv += 16; - inv += 16; - } - - if (n_left == 0) - return T; - - f |= AES_GCM_F_LAST_ROUND; - - if (n_left > 192) - return aes4_gcm_calc (T, kd, d4, ctr, inv, outv, rounds, 4, - n_left - 192, f); - if (n_left > 128) - return aes4_gcm_calc (T, kd, d4, ctr, inv, outv, rounds, 3, - n_left - 128, f); - if (n_left > 64) - return aes4_gcm_calc (T, kd, d4, ctr, inv, outv, rounds, 2, - n_left - 64, f); - return aes4_gcm_calc (T, kd, d4, ctr, inv, outv, rounds, 1, n_left, f); -#else - u8x16 d[4] = {}; - while (n_left >= 128) - { - T = aes_gcm_calc_double (T, kd, d, ctr, inv, outv, rounds, f); - - /* next */ - n_left -= 128; - outv += 8; - inv += 8; - } - - if (n_left >= 64) - { - T = aes_gcm_calc (T, kd, d, ctr, inv, outv, rounds, 4, 0, f); - - /* next */ - n_left -= 64; - outv += 4; - inv += 4; - } - - if (n_left == 0) - return T; - - f |= AES_GCM_F_LAST_ROUND; - - if (n_left > 48) - return aes_gcm_calc (T, kd, d, ctr, inv, outv, rounds, 4, n_left - 48, f); - - if (n_left > 32) - return aes_gcm_calc (T, kd, d, ctr, inv, outv, rounds, 3, n_left - 32, f); - - if (n_left > 16) - return aes_gcm_calc (T, kd, d, ctr, inv, outv, rounds, 2, n_left - 16, f); - - return aes_gcm_calc (T, kd, d, ctr, inv, outv, rounds, 1, n_left, f); -#endif -} - -static_always_inline int -aes_gcm (u8x16u *in, u8x16u *out, u8x16u *addt, u8 *ivp, u8x16u *tag, - u32 data_bytes, u32 aad_bytes, u8 tag_len, aes_gcm_key_data_t *kd, - int aes_rounds, int is_encrypt) -{ - int i; - u8x16 r, T = { }; - vec128_t Y0 = {}; - ghash_data_t _gd, *gd = &_gd; - aes_gcm_counter_t _ctr, *ctr = &_ctr; - - clib_prefetch_load (ivp); - clib_prefetch_load (in); - clib_prefetch_load (in + 4); - - /* calculate ghash for AAD - optimized for ipsec common cases */ - if (aad_bytes == 8) - T = aes_gcm_ghash (T, kd, addt, 8); - else if (aad_bytes == 12) - T = aes_gcm_ghash (T, kd, addt, 12); - else - T = aes_gcm_ghash (T, kd, addt, aad_bytes); - - /* initalize counter */ - ctr->counter = 1; - Y0.as_u64x2[0] = *(u64u *) ivp; - Y0.as_u32x4[2] = *(u32u *) (ivp + 8); - Y0.as_u32x4 += ctr_inv_1; -#if defined(__VAES__) && defined(__AVX512F__) - ctr->Y4 = u32x16_splat_u32x4 (Y0.as_u32x4) + ctr_inv_1234; -#else - ctr->Y = Y0.as_u32x4 + ctr_inv_1; -#endif - - /* ghash and encrypt/edcrypt */ - if (is_encrypt) - T = aes_gcm_enc (T, kd, ctr, in, out, data_bytes, aes_rounds); - else - T = aes_gcm_dec (T, kd, ctr, in, out, data_bytes, aes_rounds); - - clib_prefetch_load (tag); - - /* Finalize ghash - data bytes and aad bytes converted to bits */ - /* *INDENT-OFF* */ - r = (u8x16) ((u64x2) {data_bytes, aad_bytes} << 3); - /* *INDENT-ON* */ - - /* interleaved computation of final ghash and E(Y0, k) */ - ghash_mul_first (gd, r ^ T, kd->Hi[NUM_HI - 1]); - r = kd->Ke[0] ^ Y0.as_u8x16; - for (i = 1; i < 5; i += 1) - r = aes_enc_round (r, kd->Ke[i]); - ghash_reduce (gd); - ghash_reduce2 (gd); - for (; i < 9; i += 1) - r = aes_enc_round (r, kd->Ke[i]); - T = ghash_final (gd); - for (; i < aes_rounds; i += 1) - r = aes_enc_round (r, kd->Ke[i]); - r = aes_enc_last_round (r, kd->Ke[aes_rounds]); - T = u8x16_reflect (T) ^ r; - - /* tag_len 16 -> 0 */ - tag_len &= 0xf; - - if (is_encrypt) - { - /* store tag */ - if (tag_len) - aes_store_partial (tag, T, tag_len); - else - tag[0] = T; - } - else - { - /* check tag */ - u16 tag_mask = tag_len ? (1 << tag_len) - 1 : 0xffff; - if ((u8x16_msb_mask (tag[0] == T) & tag_mask) != tag_mask) - return 0; - } - return 1; -} - static_always_inline u32 -aes_ops_enc_aes_gcm (vlib_main_t * vm, vnet_crypto_op_t * ops[], - u32 n_ops, aes_key_size_t ks) +aes_ops_enc_aes_gcm (vlib_main_t *vm, vnet_crypto_op_t *ops[], u32 n_ops, + aes_key_size_t ks) { crypto_native_main_t *cm = &crypto_native_main; vnet_crypto_op_t *op = ops[0]; aes_gcm_key_data_t *kd; u32 n_left = n_ops; - next: kd = (aes_gcm_key_data_t *) cm->key_data[op->key_index]; - aes_gcm ((u8x16u *) op->src, (u8x16u *) op->dst, (u8x16u *) op->aad, - (u8 *) op->iv, (u8x16u *) op->tag, op->len, op->aad_len, - op->tag_len, kd, AES_KEY_ROUNDS (ks), /* is_encrypt */ 1); + aes_gcm (op->src, op->dst, op->aad, (u8 *) op->iv, op->tag, op->len, + op->aad_len, op->tag_len, kd, AES_KEY_ROUNDS (ks), + AES_GCM_OP_ENCRYPT); op->status = VNET_CRYPTO_OP_STATUS_COMPLETED; if (--n_left) @@ -1123,7 +51,7 @@ next: } static_always_inline u32 -aes_ops_dec_aes_gcm (vlib_main_t * vm, vnet_crypto_op_t * ops[], u32 n_ops, +aes_ops_dec_aes_gcm (vlib_main_t *vm, vnet_crypto_op_t *ops[], u32 n_ops, aes_key_size_t ks) { crypto_native_main_t *cm = &crypto_native_main; @@ -1134,10 +62,9 @@ aes_ops_dec_aes_gcm (vlib_main_t * vm, vnet_crypto_op_t * ops[], u32 n_ops, next: kd = (aes_gcm_key_data_t *) cm->key_data[op->key_index]; - rv = aes_gcm ((u8x16u *) op->src, (u8x16u *) op->dst, (u8x16u *) op->aad, - (u8 *) op->iv, (u8x16u *) op->tag, op->len, op->aad_len, - op->tag_len, kd, AES_KEY_ROUNDS (ks), - /* is_encrypt */ 0); + rv = aes_gcm (op->src, op->dst, op->aad, (u8 *) op->iv, op->tag, op->len, + op->aad_len, op->tag_len, kd, AES_KEY_ROUNDS (ks), + AES_GCM_OP_DECRYPT); if (rv) { @@ -1159,39 +86,34 @@ next: } static_always_inline void * -aes_gcm_key_exp (vnet_crypto_key_t * key, aes_key_size_t ks) +aes_gcm_key_exp (vnet_crypto_key_t *key, aes_key_size_t ks) { aes_gcm_key_data_t *kd; - u8x16 H; kd = clib_mem_alloc_aligned (sizeof (*kd), CLIB_CACHE_LINE_BYTES); - /* expand AES key */ - aes_key_expand ((u8x16 *) kd->Ke, key->data, ks); + clib_aes_gcm_key_expand (kd, key->data, ks); - /* pre-calculate H */ - H = aes_encrypt_block (u8x16_splat (0), kd->Ke, ks); - H = u8x16_reflect (H); - ghash_precompute (H, (u8x16 *) kd->Hi, NUM_HI); -#if defined(__VAES__) && defined(__AVX512F__) - u8x64 *Ke4 = (u8x64 *) kd->Ke4; - for (int i = 0; i < AES_KEY_ROUNDS (ks) + 1; i++) - Ke4[i] = u8x64_splat_u8x16 (kd->Ke[i]); -#endif return kd; } -#define foreach_aes_gcm_handler_type _(128) _(192) _(256) - -#define _(x) \ -static u32 aes_ops_dec_aes_gcm_##x \ -(vlib_main_t * vm, vnet_crypto_op_t * ops[], u32 n_ops) \ -{ return aes_ops_dec_aes_gcm (vm, ops, n_ops, AES_KEY_##x); } \ -static u32 aes_ops_enc_aes_gcm_##x \ -(vlib_main_t * vm, vnet_crypto_op_t * ops[], u32 n_ops) \ -{ return aes_ops_enc_aes_gcm (vm, ops, n_ops, AES_KEY_##x); } \ -static void * aes_gcm_key_exp_##x (vnet_crypto_key_t *key) \ -{ return aes_gcm_key_exp (key, AES_KEY_##x); } +#define foreach_aes_gcm_handler_type _ (128) _ (192) _ (256) + +#define _(x) \ + static u32 aes_ops_dec_aes_gcm_##x (vlib_main_t *vm, \ + vnet_crypto_op_t *ops[], u32 n_ops) \ + { \ + return aes_ops_dec_aes_gcm (vm, ops, n_ops, AES_KEY_##x); \ + } \ + static u32 aes_ops_enc_aes_gcm_##x (vlib_main_t *vm, \ + vnet_crypto_op_t *ops[], u32 n_ops) \ + { \ + return aes_ops_enc_aes_gcm (vm, ops, n_ops, AES_KEY_##x); \ + } \ + static void *aes_gcm_key_exp_##x (vnet_crypto_key_t *key) \ + { \ + return aes_gcm_key_exp (key, AES_KEY_##x); \ + } foreach_aes_gcm_handler_type; #undef _ @@ -1199,25 +121,27 @@ foreach_aes_gcm_handler_type; clib_error_t * #if defined(__VAES__) && defined(__AVX512F__) crypto_native_aes_gcm_init_icl (vlib_main_t *vm) +#elif defined(__VAES__) +crypto_native_aes_gcm_init_adl (vlib_main_t *vm) #elif __AVX512F__ -crypto_native_aes_gcm_init_skx (vlib_main_t * vm) +crypto_native_aes_gcm_init_skx (vlib_main_t *vm) #elif __AVX2__ -crypto_native_aes_gcm_init_hsw (vlib_main_t * vm) +crypto_native_aes_gcm_init_hsw (vlib_main_t *vm) #elif __aarch64__ -crypto_native_aes_gcm_init_neon (vlib_main_t * vm) +crypto_native_aes_gcm_init_neon (vlib_main_t *vm) #else -crypto_native_aes_gcm_init_slm (vlib_main_t * vm) +crypto_native_aes_gcm_init_slm (vlib_main_t *vm) #endif { crypto_native_main_t *cm = &crypto_native_main; -#define _(x) \ - vnet_crypto_register_ops_handler (vm, cm->crypto_engine_index, \ - VNET_CRYPTO_OP_AES_##x##_GCM_ENC, \ - aes_ops_enc_aes_gcm_##x); \ - vnet_crypto_register_ops_handler (vm, cm->crypto_engine_index, \ - VNET_CRYPTO_OP_AES_##x##_GCM_DEC, \ - aes_ops_dec_aes_gcm_##x); \ +#define _(x) \ + vnet_crypto_register_ops_handler (vm, cm->crypto_engine_index, \ + VNET_CRYPTO_OP_AES_##x##_GCM_ENC, \ + aes_ops_enc_aes_gcm_##x); \ + vnet_crypto_register_ops_handler (vm, cm->crypto_engine_index, \ + VNET_CRYPTO_OP_AES_##x##_GCM_DEC, \ + aes_ops_dec_aes_gcm_##x); \ cm->key_fn[VNET_CRYPTO_ALG_AES_##x##_GCM] = aes_gcm_key_exp_##x; foreach_aes_gcm_handler_type; #undef _ diff --git a/src/plugins/crypto_native/ghash.h b/src/plugins/crypto_native/ghash.h deleted file mode 100644 index 5f619cfa129..00000000000 --- a/src/plugins/crypto_native/ghash.h +++ /dev/null @@ -1,419 +0,0 @@ -/* - *------------------------------------------------------------------ - * Copyright (c) 2019 Cisco and/or its affiliates. - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at: - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - *------------------------------------------------------------------ - */ - -/* - *------------------------------------------------------------------ - * Copyright(c) 2018, Intel Corporation All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in - * the documentation and/or other materials provided with the - * distribution. - * * Neither the name of Intel Corporation nor the names of its - * contributors may be used to endorse or promote products derived - * from this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT - * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES * LOSS OF USE, - * DATA, OR PROFITS * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - *------------------------------------------------------------------ - */ - -/* - * Based on work by: Shay Gueron, Michael E. Kounavis, Erdinc Ozturk, - * Vinodh Gopal, James Guilford, Tomasz Kantecki - * - * References: - * [1] Vinodh Gopal et. al. Optimized Galois-Counter-Mode Implementation on - * Intel Architecture Processors. August, 2010 - * [2] Erdinc Ozturk et. al. Enabling High-Performance Galois-Counter-Mode on - * Intel Architecture Processors. October, 2012. - * [3] intel-ipsec-mb library, https://github.com/01org/intel-ipsec-mb.git - * - * Definitions: - * GF Galois Extension Field GF(2^128) - finite field where elements are - * represented as polynomials with coefficients in GF(2) with the - * highest degree of 127. Polynomials are represented as 128-bit binary - * numbers where each bit represents one coefficient. - * e.g. polynomial x^5 + x^3 + x + 1 is represented in binary 101011. - * H hash key (128 bit) - * POLY irreducible polynomial x^127 + x^7 + x^2 + x + 1 - * RPOLY irreducible polynomial x^128 + x^127 + x^126 + x^121 + 1 - * + addition in GF, which equals to XOR operation - * * multiplication in GF - * - * GF multiplication consists of 2 steps: - * - carry-less multiplication of two 128-bit operands into 256-bit result - * - reduction of 256-bit result into 128-bit with modulo POLY - * - * GHash is calculated on 128-bit blocks of data according to the following - * formula: - * GH = (GH + data) * hash_key - * - * To avoid bit-reflection of data, this code uses GF multipication - * with reversed polynomial: - * a * b * x^-127 mod RPOLY - * - * To improve computation speed table Hi is precomputed with powers of H', - * where H' is calculated as H<<1 mod RPOLY. - * This allows us to improve performance by deferring reduction. For example - * to caclulate ghash of 4 128-bit blocks of data (b0, b1, b2, b3), we can do: - * - * __i128 Hi[4]; - * ghash_precompute (H, Hi, 4); - * - * ghash_data_t _gd, *gd = &_gd; - * ghash_mul_first (gd, GH ^ b0, Hi[3]); - * ghash_mul_next (gd, b1, Hi[2]); - * ghash_mul_next (gd, b2, Hi[1]); - * ghash_mul_next (gd, b3, Hi[0]); - * ghash_reduce (gd); - * ghash_reduce2 (gd); - * GH = ghash_final (gd); - * - * Reduction step is split into 3 functions so it can be better interleaved - * with other code, (i.e. with AES computation). - */ - -#ifndef __ghash_h__ -#define __ghash_h__ - -static_always_inline u8x16 -gmul_lo_lo (u8x16 a, u8x16 b) -{ -#if defined (__PCLMUL__) - return (u8x16) _mm_clmulepi64_si128 ((__m128i) a, (__m128i) b, 0x00); -#elif defined (__ARM_FEATURE_CRYPTO) - return (u8x16) vmull_p64 ((poly64_t) vget_low_p64 ((poly64x2_t) a), - (poly64_t) vget_low_p64 ((poly64x2_t) b)); -#endif -} - -static_always_inline u8x16 -gmul_hi_lo (u8x16 a, u8x16 b) -{ -#if defined (__PCLMUL__) - return (u8x16) _mm_clmulepi64_si128 ((__m128i) a, (__m128i) b, 0x01); -#elif defined (__ARM_FEATURE_CRYPTO) - return (u8x16) vmull_p64 ((poly64_t) vget_high_p64 ((poly64x2_t) a), - (poly64_t) vget_low_p64 ((poly64x2_t) b)); -#endif -} - -static_always_inline u8x16 -gmul_lo_hi (u8x16 a, u8x16 b) -{ -#if defined (__PCLMUL__) - return (u8x16) _mm_clmulepi64_si128 ((__m128i) a, (__m128i) b, 0x10); -#elif defined (__ARM_FEATURE_CRYPTO) - return (u8x16) vmull_p64 ((poly64_t) vget_low_p64 ((poly64x2_t) a), - (poly64_t) vget_high_p64 ((poly64x2_t) b)); -#endif -} - -static_always_inline u8x16 -gmul_hi_hi (u8x16 a, u8x16 b) -{ -#if defined (__PCLMUL__) - return (u8x16) _mm_clmulepi64_si128 ((__m128i) a, (__m128i) b, 0x11); -#elif defined (__ARM_FEATURE_CRYPTO) - return (u8x16) vmull_high_p64 ((poly64x2_t) a, (poly64x2_t) b); -#endif -} - -typedef struct -{ - u8x16 mid, hi, lo, tmp_lo, tmp_hi; - int pending; -} ghash_data_t; - -static const u8x16 ghash_poly = { - 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xc2 -}; - -static const u8x16 ghash_poly2 = { - 0x00, 0x00, 0x00, 0xc2, 0x01, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xc2 -}; - -static_always_inline void -ghash_mul_first (ghash_data_t * gd, u8x16 a, u8x16 b) -{ - /* a1 * b1 */ - gd->hi = gmul_hi_hi (a, b); - /* a0 * b0 */ - gd->lo = gmul_lo_lo (a, b); - /* a0 * b1 ^ a1 * b0 */ - gd->mid = (gmul_hi_lo (a, b) ^ gmul_lo_hi (a, b)); - - /* set gd->pending to 0 so next invocation of ghash_mul_next(...) knows that - there is no pending data in tmp_lo and tmp_hi */ - gd->pending = 0; -} - -static_always_inline void -ghash_mul_next (ghash_data_t * gd, u8x16 a, u8x16 b) -{ - /* a1 * b1 */ - u8x16 hi = gmul_hi_hi (a, b); - /* a0 * b0 */ - u8x16 lo = gmul_lo_lo (a, b); - - /* this branch will be optimized out by the compiler, and it allows us to - reduce number of XOR operations by using ternary logic */ - if (gd->pending) - { - /* there is peding data from previous invocation so we can XOR */ - gd->hi = u8x16_xor3 (gd->hi, gd->tmp_hi, hi); - gd->lo = u8x16_xor3 (gd->lo, gd->tmp_lo, lo); - gd->pending = 0; - } - else - { - /* there is no peding data from previous invocation so we postpone XOR */ - gd->tmp_hi = hi; - gd->tmp_lo = lo; - gd->pending = 1; - } - - /* gd->mid ^= a0 * b1 ^ a1 * b0 */ - gd->mid = u8x16_xor3 (gd->mid, gmul_hi_lo (a, b), gmul_lo_hi (a, b)); -} - -static_always_inline void -ghash_reduce (ghash_data_t * gd) -{ - u8x16 r; - - /* Final combination: - gd->lo ^= gd->mid << 64 - gd->hi ^= gd->mid >> 64 */ - u8x16 midl = u8x16_word_shift_left (gd->mid, 8); - u8x16 midr = u8x16_word_shift_right (gd->mid, 8); - - if (gd->pending) - { - gd->lo = u8x16_xor3 (gd->lo, gd->tmp_lo, midl); - gd->hi = u8x16_xor3 (gd->hi, gd->tmp_hi, midr); - } - else - { - gd->lo ^= midl; - gd->hi ^= midr; - } - r = gmul_hi_lo (ghash_poly2, gd->lo); - gd->lo ^= u8x16_word_shift_left (r, 8); -} - -static_always_inline void -ghash_reduce2 (ghash_data_t * gd) -{ - gd->tmp_lo = gmul_lo_lo (ghash_poly2, gd->lo); - gd->tmp_hi = gmul_lo_hi (ghash_poly2, gd->lo); -} - -static_always_inline u8x16 -ghash_final (ghash_data_t * gd) -{ - return u8x16_xor3 (gd->hi, u8x16_word_shift_right (gd->tmp_lo, 4), - u8x16_word_shift_left (gd->tmp_hi, 4)); -} - -static_always_inline u8x16 -ghash_mul (u8x16 a, u8x16 b) -{ - ghash_data_t _gd, *gd = &_gd; - ghash_mul_first (gd, a, b); - ghash_reduce (gd); - ghash_reduce2 (gd); - return ghash_final (gd); -} - -#if defined(__VPCLMULQDQ__) && defined(__AVX512F__) - -static const u8x64 ghash4_poly2 = { - 0x00, 0x00, 0x00, 0xc2, 0x01, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xc2, - 0x00, 0x00, 0x00, 0xc2, 0x01, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xc2, - 0x00, 0x00, 0x00, 0xc2, 0x01, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xc2, - 0x00, 0x00, 0x00, 0xc2, 0x01, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xc2, -}; - -typedef struct -{ - u8x64 hi, lo, mid, tmp_lo, tmp_hi; - int pending; -} ghash4_data_t; - -static_always_inline u8x64 -gmul4_lo_lo (u8x64 a, u8x64 b) -{ - return (u8x64) _mm512_clmulepi64_epi128 ((__m512i) a, (__m512i) b, 0x00); -} - -static_always_inline u8x64 -gmul4_hi_lo (u8x64 a, u8x64 b) -{ - return (u8x64) _mm512_clmulepi64_epi128 ((__m512i) a, (__m512i) b, 0x01); -} - -static_always_inline u8x64 -gmul4_lo_hi (u8x64 a, u8x64 b) -{ - return (u8x64) _mm512_clmulepi64_epi128 ((__m512i) a, (__m512i) b, 0x10); -} - -static_always_inline u8x64 -gmul4_hi_hi (u8x64 a, u8x64 b) -{ - return (u8x64) _mm512_clmulepi64_epi128 ((__m512i) a, (__m512i) b, 0x11); -} - - -static_always_inline void -ghash4_mul_first (ghash4_data_t * gd, u8x64 a, u8x64 b) -{ - gd->hi = gmul4_hi_hi (a, b); - gd->lo = gmul4_lo_lo (a, b); - gd->mid = (gmul4_hi_lo (a, b) ^ gmul4_lo_hi (a, b)); - gd->pending = 0; -} - -static_always_inline void -ghash4_mul_next (ghash4_data_t * gd, u8x64 a, u8x64 b) -{ - u8x64 hi = gmul4_hi_hi (a, b); - u8x64 lo = gmul4_lo_lo (a, b); - - if (gd->pending) - { - /* there is peding data from previous invocation so we can XOR */ - gd->hi = u8x64_xor3 (gd->hi, gd->tmp_hi, hi); - gd->lo = u8x64_xor3 (gd->lo, gd->tmp_lo, lo); - gd->pending = 0; - } - else - { - /* there is no peding data from previous invocation so we postpone XOR */ - gd->tmp_hi = hi; - gd->tmp_lo = lo; - gd->pending = 1; - } - gd->mid = u8x64_xor3 (gd->mid, gmul4_hi_lo (a, b), gmul4_lo_hi (a, b)); -} - -static_always_inline void -ghash4_reduce (ghash4_data_t * gd) -{ - u8x64 r; - - /* Final combination: - gd->lo ^= gd->mid << 64 - gd->hi ^= gd->mid >> 64 */ - - u8x64 midl = u8x64_word_shift_left (gd->mid, 8); - u8x64 midr = u8x64_word_shift_right (gd->mid, 8); - - if (gd->pending) - { - gd->lo = u8x64_xor3 (gd->lo, gd->tmp_lo, midl); - gd->hi = u8x64_xor3 (gd->hi, gd->tmp_hi, midr); - } - else - { - gd->lo ^= midl; - gd->hi ^= midr; - } - - r = gmul4_hi_lo (ghash4_poly2, gd->lo); - gd->lo ^= u8x64_word_shift_left (r, 8); - -} - -static_always_inline void -ghash4_reduce2 (ghash4_data_t * gd) -{ - gd->tmp_lo = gmul4_lo_lo (ghash4_poly2, gd->lo); - gd->tmp_hi = gmul4_lo_hi (ghash4_poly2, gd->lo); -} - -static_always_inline u8x16 -ghash4_final (ghash4_data_t * gd) -{ - u8x64 r; - u8x32 t; - - r = u8x64_xor3 (gd->hi, u8x64_word_shift_right (gd->tmp_lo, 4), - u8x64_word_shift_left (gd->tmp_hi, 4)); - - /* horizontal XOR of 4 128-bit lanes */ - t = u8x64_extract_lo (r) ^ u8x64_extract_hi (r); - return u8x32_extract_hi (t) ^ u8x32_extract_lo (t); -} -#endif - -static_always_inline void -ghash_precompute (u8x16 H, u8x16 * Hi, int n) -{ - u8x16 r8; - u32x4 r32; - /* calcullate H<<1 mod poly from the hash key */ - r8 = (u8x16) ((u64x2) H >> 63); - H = (u8x16) ((u64x2) H << 1); - H |= u8x16_word_shift_left (r8, 8); - r32 = (u32x4) u8x16_word_shift_right (r8, 8); -#ifdef __SSE2__ - r32 = u32x4_shuffle (r32, 0, 1, 2, 0); -#else - r32[3] = r32[0]; -#endif - /* *INDENT-OFF* */ - r32 = r32 == (u32x4) {1, 0, 0, 1}; - /* *INDENT-ON* */ - Hi[n - 1] = H = H ^ ((u8x16) r32 & ghash_poly); - - /* calculate H^(i + 1) */ - for (int i = n - 2; i >= 0; i--) - Hi[i] = ghash_mul (H, Hi[i + 1]); -} - -#endif /* __ghash_h__ */ - -/* - * fd.io coding-style-patch-verification: ON - * - * Local Variables: - * eval: (c-set-style "gnu") - * End: - */ |