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Diffstat (limited to 'src/plugins/crypto_native/aes.h')
| -rw-r--r-- | src/plugins/crypto_native/aes.h | 480 |
1 files changed, 0 insertions, 480 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: - */ |