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Diffstat (limited to 'src/vppinfra/sha2.h')
| -rw-r--r-- | src/vppinfra/sha2.h | 637 |
1 files changed, 0 insertions, 637 deletions
diff --git a/src/vppinfra/sha2.h b/src/vppinfra/sha2.h deleted file mode 100644 index 61fb7f52961..00000000000 --- a/src/vppinfra/sha2.h +++ /dev/null @@ -1,637 +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. - */ - -#ifndef included_sha2_h -#define included_sha2_h - -#include <vppinfra/clib.h> - -#define SHA224_DIGEST_SIZE 28 -#define SHA224_BLOCK_SIZE 64 - -#define SHA256_DIGEST_SIZE 32 -#define SHA256_BLOCK_SIZE 64 -#define SHA256_ROTR(x, y) ((x >> y) | (x << (32 - y))) -#define SHA256_CH(a, b, c) ((a & b) ^ (~a & c)) -#define SHA256_MAJ(a, b, c) ((a & b) ^ (a & c) ^ (b & c)) -#define SHA256_CSIGMA0(x) (SHA256_ROTR(x, 2) ^ \ - SHA256_ROTR(x, 13) ^ \ - SHA256_ROTR(x, 22)); -#define SHA256_CSIGMA1(x) (SHA256_ROTR(x, 6) ^ \ - SHA256_ROTR(x, 11) ^ \ - SHA256_ROTR(x, 25)); -#define SHA256_SSIGMA0(x) (SHA256_ROTR (x, 7) ^ \ - SHA256_ROTR (x, 18) ^ \ - (x >> 3)) -#define SHA256_SSIGMA1(x) (SHA256_ROTR (x, 17) ^ \ - SHA256_ROTR (x, 19) ^ \ - (x >> 10)) - -#define SHA256_MSG_SCHED(w, j) \ -{ \ - w[j] = w[j - 7] + w[j - 16]; \ - w[j] += SHA256_SSIGMA0 (w[j - 15]); \ - w[j] += SHA256_SSIGMA1 (w[j - 2]); \ -} - -#define SHA256_TRANSFORM(s, w, i, k) \ -{ \ - __typeof__(s[0]) t1, t2; \ - t1 = k + w[i] + s[7]; \ - t1 += SHA256_CSIGMA1 (s[4]); \ - t1 += SHA256_CH (s[4], s[5], s[6]); \ - t2 = SHA256_CSIGMA0 (s[0]); \ - t2 += SHA256_MAJ (s[0], s[1], s[2]); \ - s[7] = s[6]; \ - s[6] = s[5]; \ - s[5] = s[4]; \ - s[4] = s[3] + t1; \ - s[3] = s[2]; \ - s[2] = s[1]; \ - s[1] = s[0]; \ - s[0] = t1 + t2; \ -} - -#define SHA512_224_DIGEST_SIZE 28 -#define SHA512_224_BLOCK_SIZE 128 - -#define SHA512_256_DIGEST_SIZE 32 -#define SHA512_256_BLOCK_SIZE 128 - -#define SHA384_DIGEST_SIZE 48 -#define SHA384_BLOCK_SIZE 128 - -#define SHA512_DIGEST_SIZE 64 -#define SHA512_BLOCK_SIZE 128 -#define SHA512_ROTR(x, y) ((x >> y) | (x << (64 - y))) -#define SHA512_CH(a, b, c) ((a & b) ^ (~a & c)) -#define SHA512_MAJ(a, b, c) ((a & b) ^ (a & c) ^ (b & c)) -#define SHA512_CSIGMA0(x) (SHA512_ROTR (x, 28) ^ \ - SHA512_ROTR (x, 34) ^ \ - SHA512_ROTR (x, 39)) -#define SHA512_CSIGMA1(x) (SHA512_ROTR (x, 14) ^ \ - SHA512_ROTR (x, 18) ^ \ - SHA512_ROTR (x, 41)) -#define SHA512_SSIGMA0(x) (SHA512_ROTR (x, 1) ^ \ - SHA512_ROTR (x, 8) ^ \ - (x >> 7)) -#define SHA512_SSIGMA1(x) (SHA512_ROTR (x, 19) ^ \ - SHA512_ROTR (x, 61) ^ \ - (x >> 6)) - -#define SHA512_MSG_SCHED(w, j) \ -{ \ - w[j] = w[j - 7] + w[j - 16]; \ - w[j] += SHA512_SSIGMA0 (w[j - 15]); \ - w[j] += SHA512_SSIGMA1 (w[j - 2]); \ -} - -#define SHA512_TRANSFORM(s, w, i, k) \ -{ \ - __typeof__(s[0]) t1, t2; \ - t1 = k + w[i] + s[7]; \ - t1 += SHA512_CSIGMA1 (s[4]); \ - t1 += SHA512_CH (s[4], s[5], s[6]); \ - t2 = SHA512_CSIGMA0 (s[0]); \ - t2 += SHA512_MAJ (s[0], s[1], s[2]); \ - s[7] = s[6]; \ - s[6] = s[5]; \ - s[5] = s[4]; \ - s[4] = s[3] + t1; \ - s[3] = s[2]; \ - s[2] = s[1]; \ - s[1] = s[0]; \ - s[0] = t1 + t2; \ -} - -static const u32 sha224_h[8] = { - 0xc1059ed8, 0x367cd507, 0x3070dd17, 0xf70e5939, - 0xffc00b31, 0x68581511, 0x64f98fa7, 0xbefa4fa4 -}; - -static const u32 sha256_h[8] = { - 0x6a09e667, 0xbb67ae85, 0x3c6ef372, 0xa54ff53a, - 0x510e527f, 0x9b05688c, 0x1f83d9ab, 0x5be0cd19 -}; - -static const u32 sha256_k[64] = { - 0x428a2f98, 0x71374491, 0xb5c0fbcf, 0xe9b5dba5, - 0x3956c25b, 0x59f111f1, 0x923f82a4, 0xab1c5ed5, - 0xd807aa98, 0x12835b01, 0x243185be, 0x550c7dc3, - 0x72be5d74, 0x80deb1fe, 0x9bdc06a7, 0xc19bf174, - 0xe49b69c1, 0xefbe4786, 0x0fc19dc6, 0x240ca1cc, - 0x2de92c6f, 0x4a7484aa, 0x5cb0a9dc, 0x76f988da, - 0x983e5152, 0xa831c66d, 0xb00327c8, 0xbf597fc7, - 0xc6e00bf3, 0xd5a79147, 0x06ca6351, 0x14292967, - 0x27b70a85, 0x2e1b2138, 0x4d2c6dfc, 0x53380d13, - 0x650a7354, 0x766a0abb, 0x81c2c92e, 0x92722c85, - 0xa2bfe8a1, 0xa81a664b, 0xc24b8b70, 0xc76c51a3, - 0xd192e819, 0xd6990624, 0xf40e3585, 0x106aa070, - 0x19a4c116, 0x1e376c08, 0x2748774c, 0x34b0bcb5, - 0x391c0cb3, 0x4ed8aa4a, 0x5b9cca4f, 0x682e6ff3, - 0x748f82ee, 0x78a5636f, 0x84c87814, 0x8cc70208, - 0x90befffa, 0xa4506ceb, 0xbef9a3f7, 0xc67178f2 -}; - -static const u64 sha384_h[8] = { - 0xcbbb9d5dc1059ed8, 0x629a292a367cd507, - 0x9159015a3070dd17, 0x152fecd8f70e5939, - 0x67332667ffc00b31, 0x8eb44a8768581511, - 0xdb0c2e0d64f98fa7, 0x47b5481dbefa4fa4 -}; - -static const u64 sha512_h[8] = { - 0x6a09e667f3bcc908, 0xbb67ae8584caa73b, - 0x3c6ef372fe94f82b, 0xa54ff53a5f1d36f1, - 0x510e527fade682d1, 0x9b05688c2b3e6c1f, - 0x1f83d9abfb41bd6b, 0x5be0cd19137e2179 -}; - -static const u64 sha512_224_h[8] = { - 0x8c3d37c819544da2, 0x73e1996689dcd4d6, - 0x1dfab7ae32ff9c82, 0x679dd514582f9fcf, - 0x0f6d2b697bd44da8, 0x77e36f7304c48942, - 0x3f9d85a86a1d36c8, 0x1112e6ad91d692a1 -}; - -static const u64 sha512_256_h[8] = { - 0x22312194fc2bf72c, 0x9f555fa3c84c64c2, - 0x2393b86b6f53b151, 0x963877195940eabd, - 0x96283ee2a88effe3, 0xbe5e1e2553863992, - 0x2b0199fc2c85b8aa, 0x0eb72ddc81c52ca2 -}; - -static const u64 sha512_k[80] = { - 0x428a2f98d728ae22, 0x7137449123ef65cd, - 0xb5c0fbcfec4d3b2f, 0xe9b5dba58189dbbc, - 0x3956c25bf348b538, 0x59f111f1b605d019, - 0x923f82a4af194f9b, 0xab1c5ed5da6d8118, - 0xd807aa98a3030242, 0x12835b0145706fbe, - 0x243185be4ee4b28c, 0x550c7dc3d5ffb4e2, - 0x72be5d74f27b896f, 0x80deb1fe3b1696b1, - 0x9bdc06a725c71235, 0xc19bf174cf692694, - 0xe49b69c19ef14ad2, 0xefbe4786384f25e3, - 0x0fc19dc68b8cd5b5, 0x240ca1cc77ac9c65, - 0x2de92c6f592b0275, 0x4a7484aa6ea6e483, - 0x5cb0a9dcbd41fbd4, 0x76f988da831153b5, - 0x983e5152ee66dfab, 0xa831c66d2db43210, - 0xb00327c898fb213f, 0xbf597fc7beef0ee4, - 0xc6e00bf33da88fc2, 0xd5a79147930aa725, - 0x06ca6351e003826f, 0x142929670a0e6e70, - 0x27b70a8546d22ffc, 0x2e1b21385c26c926, - 0x4d2c6dfc5ac42aed, 0x53380d139d95b3df, - 0x650a73548baf63de, 0x766a0abb3c77b2a8, - 0x81c2c92e47edaee6, 0x92722c851482353b, - 0xa2bfe8a14cf10364, 0xa81a664bbc423001, - 0xc24b8b70d0f89791, 0xc76c51a30654be30, - 0xd192e819d6ef5218, 0xd69906245565a910, - 0xf40e35855771202a, 0x106aa07032bbd1b8, - 0x19a4c116b8d2d0c8, 0x1e376c085141ab53, - 0x2748774cdf8eeb99, 0x34b0bcb5e19b48a8, - 0x391c0cb3c5c95a63, 0x4ed8aa4ae3418acb, - 0x5b9cca4f7763e373, 0x682e6ff3d6b2b8a3, - 0x748f82ee5defb2fc, 0x78a5636f43172f60, - 0x84c87814a1f0ab72, 0x8cc702081a6439ec, - 0x90befffa23631e28, 0xa4506cebde82bde9, - 0xbef9a3f7b2c67915, 0xc67178f2e372532b, - 0xca273eceea26619c, 0xd186b8c721c0c207, - 0xeada7dd6cde0eb1e, 0xf57d4f7fee6ed178, - 0x06f067aa72176fba, 0x0a637dc5a2c898a6, - 0x113f9804bef90dae, 0x1b710b35131c471b, - 0x28db77f523047d84, 0x32caab7b40c72493, - 0x3c9ebe0a15c9bebc, 0x431d67c49c100d4c, - 0x4cc5d4becb3e42b6, 0x597f299cfc657e2a, - 0x5fcb6fab3ad6faec, 0x6c44198c4a475817 -}; - -typedef enum -{ - CLIB_SHA2_224, - CLIB_SHA2_256, - CLIB_SHA2_384, - CLIB_SHA2_512, - CLIB_SHA2_512_224, - CLIB_SHA2_512_256, -} clib_sha2_type_t; - -#define SHA2_MAX_BLOCK_SIZE SHA512_BLOCK_SIZE -#define SHA2_MAX_DIGEST_SIZE SHA512_DIGEST_SIZE - -typedef struct -{ - u64 total_bytes; - u16 n_pending; - u8 block_size; - u8 digest_size; - union - { - u32 h32[8]; - u64 h64[8]; -#if defined(__SHA__) && defined (__x86_64__) - u32x4 h32x4[2]; -#endif - }; - union - { - u8 as_u8[SHA2_MAX_BLOCK_SIZE]; - u64 as_u64[SHA2_MAX_BLOCK_SIZE / sizeof (u64)]; - uword as_uword[SHA2_MAX_BLOCK_SIZE / sizeof (uword)]; - } - pending; -} -clib_sha2_ctx_t; - -static_always_inline void -clib_sha2_init (clib_sha2_ctx_t * ctx, clib_sha2_type_t type) -{ - const u32 *h32 = 0; - const u64 *h64 = 0; - - ctx->total_bytes = 0; - ctx->n_pending = 0; - - switch (type) - { - case CLIB_SHA2_224: - h32 = sha224_h; - ctx->block_size = SHA224_BLOCK_SIZE; - ctx->digest_size = SHA224_DIGEST_SIZE; - break; - case CLIB_SHA2_256: - h32 = sha256_h; - ctx->block_size = SHA256_BLOCK_SIZE; - ctx->digest_size = SHA256_DIGEST_SIZE; - break; - case CLIB_SHA2_384: - h64 = sha384_h; - ctx->block_size = SHA384_BLOCK_SIZE; - ctx->digest_size = SHA384_DIGEST_SIZE; - break; - case CLIB_SHA2_512: - h64 = sha512_h; - ctx->block_size = SHA512_BLOCK_SIZE; - ctx->digest_size = SHA512_DIGEST_SIZE; - break; - case CLIB_SHA2_512_224: - h64 = sha512_224_h; - ctx->block_size = SHA512_224_BLOCK_SIZE; - ctx->digest_size = SHA512_224_DIGEST_SIZE; - break; - case CLIB_SHA2_512_256: - h64 = sha512_256_h; - ctx->block_size = SHA512_256_BLOCK_SIZE; - ctx->digest_size = SHA512_256_DIGEST_SIZE; - break; - } - if (h32) - for (int i = 0; i < 8; i++) - ctx->h32[i] = h32[i]; - - if (h64) - for (int i = 0; i < 8; i++) - ctx->h64[i] = h64[i]; -} - -#if defined(__SHA__) && defined (__x86_64__) -static inline void -shani_sha256_cycle_w (u32x4 cw[], u8 a, u8 b, u8 c, u8 d) -{ - cw[a] = (u32x4) _mm_sha256msg1_epu32 ((__m128i) cw[a], (__m128i) cw[b]); - cw[a] += (u32x4) _mm_alignr_epi8 ((__m128i) cw[d], (__m128i) cw[c], 4); - cw[a] = (u32x4) _mm_sha256msg2_epu32 ((__m128i) cw[a], (__m128i) cw[d]); -} - -static inline void -shani_sha256_4_rounds (u32x4 cw, u8 n, u32x4 s[]) -{ - u32x4 r = *(u32x4 *) (sha256_k + 4 * n) + cw; - s[0] = (u32x4) _mm_sha256rnds2_epu32 ((__m128i) s[0], (__m128i) s[1], - (__m128i) r); - r = (u32x4) u64x2_interleave_hi ((u64x2) r, (u64x2) r); - s[1] = (u32x4) _mm_sha256rnds2_epu32 ((__m128i) s[1], (__m128i) s[0], - (__m128i) r); -} - -static inline void -shani_sha256_shuffle (u32x4 d[2], u32x4 s[2]) -{ - /* {0, 1, 2, 3}, {4, 5, 6, 7} -> {7, 6, 3, 2}, {5, 4, 1, 0} */ - d[0] = (u32x4) _mm_shuffle_ps ((__m128) s[1], (__m128) s[0], 0xbb); - d[1] = (u32x4) _mm_shuffle_ps ((__m128) s[1], (__m128) s[0], 0x11); -} -#endif - -static inline void -clib_sha256_block (clib_sha2_ctx_t *ctx, const u8 *msg, uword n_blocks) -{ -#if defined(__SHA__) && defined (__x86_64__) - u32x4 h[2], s[2], w[4]; - - shani_sha256_shuffle (h, ctx->h32x4); - - while (n_blocks) - { - w[0] = u32x4_byte_swap (u32x4_load_unaligned ((u8 *) msg + 0)); - w[1] = u32x4_byte_swap (u32x4_load_unaligned ((u8 *) msg + 16)); - w[2] = u32x4_byte_swap (u32x4_load_unaligned ((u8 *) msg + 32)); - w[3] = u32x4_byte_swap (u32x4_load_unaligned ((u8 *) msg + 48)); - - s[0] = h[0]; - s[1] = h[1]; - - shani_sha256_4_rounds (w[0], 0, s); - shani_sha256_4_rounds (w[1], 1, s); - shani_sha256_4_rounds (w[2], 2, s); - shani_sha256_4_rounds (w[3], 3, s); - - shani_sha256_cycle_w (w, 0, 1, 2, 3); - shani_sha256_4_rounds (w[0], 4, s); - shani_sha256_cycle_w (w, 1, 2, 3, 0); - shani_sha256_4_rounds (w[1], 5, s); - shani_sha256_cycle_w (w, 2, 3, 0, 1); - shani_sha256_4_rounds (w[2], 6, s); - shani_sha256_cycle_w (w, 3, 0, 1, 2); - shani_sha256_4_rounds (w[3], 7, s); - - shani_sha256_cycle_w (w, 0, 1, 2, 3); - shani_sha256_4_rounds (w[0], 8, s); - shani_sha256_cycle_w (w, 1, 2, 3, 0); - shani_sha256_4_rounds (w[1], 9, s); - shani_sha256_cycle_w (w, 2, 3, 0, 1); - shani_sha256_4_rounds (w[2], 10, s); - shani_sha256_cycle_w (w, 3, 0, 1, 2); - shani_sha256_4_rounds (w[3], 11, s); - - shani_sha256_cycle_w (w, 0, 1, 2, 3); - shani_sha256_4_rounds (w[0], 12, s); - shani_sha256_cycle_w (w, 1, 2, 3, 0); - shani_sha256_4_rounds (w[1], 13, s); - shani_sha256_cycle_w (w, 2, 3, 0, 1); - shani_sha256_4_rounds (w[2], 14, s); - shani_sha256_cycle_w (w, 3, 0, 1, 2); - shani_sha256_4_rounds (w[3], 15, s); - - h[0] += s[0]; - h[1] += s[1]; - - /* next */ - msg += SHA256_BLOCK_SIZE; - n_blocks--; - } - - shani_sha256_shuffle (ctx->h32x4, h); -#else - u32 w[64], s[8], i; - - while (n_blocks) - { - for (i = 0; i < 8; i++) - s[i] = ctx->h32[i]; - - for (i = 0; i < 16; i++) - { - w[i] = clib_net_to_host_u32 (*((u32 *) msg + i)); - SHA256_TRANSFORM (s, w, i, sha256_k[i]); - } - - for (i = 16; i < 64; i++) - { - SHA256_MSG_SCHED (w, i); - SHA256_TRANSFORM (s, w, i, sha256_k[i]); - } - - for (i = 0; i < 8; i++) - ctx->h32[i] += s[i]; - - /* next */ - msg += SHA256_BLOCK_SIZE; - n_blocks--; - } -#endif -} - -static_always_inline void -clib_sha512_block (clib_sha2_ctx_t * ctx, const u8 * msg, uword n_blocks) -{ - u64 w[80], s[8], i; - - while (n_blocks) - { - for (i = 0; i < 8; i++) - s[i] = ctx->h64[i]; - - for (i = 0; i < 16; i++) - { - w[i] = clib_net_to_host_u64 (*((u64 *) msg + i)); - SHA512_TRANSFORM (s, w, i, sha512_k[i]); - } - - for (i = 16; i < 80; i++) - { - SHA512_MSG_SCHED (w, i); - SHA512_TRANSFORM (s, w, i, sha512_k[i]); - } - - for (i = 0; i < 8; i++) - ctx->h64[i] += s[i]; - - /* next */ - msg += SHA512_BLOCK_SIZE; - n_blocks--; - } -} - -static_always_inline void -clib_sha2_update (clib_sha2_ctx_t * ctx, const u8 * msg, uword n_bytes) -{ - uword n_blocks; - if (ctx->n_pending) - { - uword n_left = ctx->block_size - ctx->n_pending; - if (n_bytes < n_left) - { - clib_memcpy_fast (ctx->pending.as_u8 + ctx->n_pending, msg, - n_bytes); - ctx->n_pending += n_bytes; - return; - } - else - { - clib_memcpy_fast (ctx->pending.as_u8 + ctx->n_pending, msg, n_left); - if (ctx->block_size == SHA512_BLOCK_SIZE) - clib_sha512_block (ctx, ctx->pending.as_u8, 1); - else - clib_sha256_block (ctx, ctx->pending.as_u8, 1); - ctx->n_pending = 0; - ctx->total_bytes += ctx->block_size; - n_bytes -= n_left; - msg += n_left; - } - } - - if ((n_blocks = n_bytes / ctx->block_size)) - { - if (ctx->block_size == SHA512_BLOCK_SIZE) - clib_sha512_block (ctx, msg, n_blocks); - else - clib_sha256_block (ctx, msg, n_blocks); - n_bytes -= n_blocks * ctx->block_size; - msg += n_blocks * ctx->block_size; - ctx->total_bytes += n_blocks * ctx->block_size; - } - - if (n_bytes) - { - clib_memset_u8 (ctx->pending.as_u8, 0, ctx->block_size); - clib_memcpy_fast (ctx->pending.as_u8, msg, n_bytes); - ctx->n_pending = n_bytes; - } - else - ctx->n_pending = 0; -} - -static_always_inline void -clib_sha2_final (clib_sha2_ctx_t * ctx, u8 * digest) -{ - int i; - - ctx->total_bytes += ctx->n_pending; - if (ctx->n_pending == 0) - { - clib_memset (ctx->pending.as_u8, 0, ctx->block_size); - ctx->pending.as_u8[0] = 0x80; - } - else if (ctx->n_pending + sizeof (u64) + sizeof (u8) > ctx->block_size) - { - ctx->pending.as_u8[ctx->n_pending] = 0x80; - if (ctx->block_size == SHA512_BLOCK_SIZE) - clib_sha512_block (ctx, ctx->pending.as_u8, 1); - else - clib_sha256_block (ctx, ctx->pending.as_u8, 1); - clib_memset (ctx->pending.as_u8, 0, ctx->block_size); - } - else - ctx->pending.as_u8[ctx->n_pending] = 0x80; - - ctx->pending.as_u64[ctx->block_size / 8 - 1] = - clib_net_to_host_u64 (ctx->total_bytes * 8); - if (ctx->block_size == SHA512_BLOCK_SIZE) - clib_sha512_block (ctx, ctx->pending.as_u8, 1); - else - clib_sha256_block (ctx, ctx->pending.as_u8, 1); - - if (ctx->block_size == SHA512_BLOCK_SIZE) - { - for (i = 0; i < ctx->digest_size / sizeof (u64); i++) - *((u64 *) digest + i) = clib_net_to_host_u64 (ctx->h64[i]); - - /* sha512-224 case - write half of u64 */ - if (i * sizeof (u64) < ctx->digest_size) - *((u32 *) digest + 2 * i) = clib_net_to_host_u32 (ctx->h64[i] >> 32); - } - else - for (i = 0; i < ctx->digest_size / sizeof (u32); i++) - *((u32 *) digest + i) = clib_net_to_host_u32 (ctx->h32[i]); -} - -static_always_inline void -clib_sha2 (clib_sha2_type_t type, const u8 * msg, uword len, u8 * digest) -{ - clib_sha2_ctx_t ctx; - clib_sha2_init (&ctx, type); - clib_sha2_update (&ctx, msg, len); - clib_sha2_final (&ctx, digest); -} - -#define clib_sha224(...) clib_sha2 (CLIB_SHA2_224, __VA_ARGS__) -#define clib_sha256(...) clib_sha2 (CLIB_SHA2_256, __VA_ARGS__) -#define clib_sha384(...) clib_sha2 (CLIB_SHA2_384, __VA_ARGS__) -#define clib_sha512(...) clib_sha2 (CLIB_SHA2_512, __VA_ARGS__) -#define clib_sha512_224(...) clib_sha2 (CLIB_SHA2_512_224, __VA_ARGS__) -#define clib_sha512_256(...) clib_sha2 (CLIB_SHA2_512_256, __VA_ARGS__) - -static_always_inline void -clib_hmac_sha2 (clib_sha2_type_t type, const u8 * key, uword key_len, - const u8 * msg, uword len, u8 * digest) -{ - clib_sha2_ctx_t _ctx, *ctx = &_ctx; - uword key_data[SHA2_MAX_BLOCK_SIZE / sizeof (uword)]; - u8 i_digest[SHA2_MAX_DIGEST_SIZE]; - int i, n_words; - - clib_sha2_init (ctx, type); - n_words = ctx->block_size / sizeof (uword); - - /* key */ - if (key_len > ctx->block_size) - { - /* key is longer than block, calculate hash of key */ - clib_sha2_update (ctx, key, key_len); - for (i = (ctx->digest_size / sizeof (uword)) / 2; i < n_words; i++) - key_data[i] = 0; - clib_sha2_final (ctx, (u8 *) key_data); - clib_sha2_init (ctx, type); - } - else - { - for (i = 0; i < n_words; i++) - key_data[i] = 0; - clib_memcpy_fast (key_data, key, key_len); - } - - /* ipad */ - for (i = 0; i < n_words; i++) - ctx->pending.as_uword[i] = key_data[i] ^ (uword) 0x3636363636363636; - if (ctx->block_size == SHA512_BLOCK_SIZE) - clib_sha512_block (ctx, ctx->pending.as_u8, 1); - else - clib_sha256_block (ctx, ctx->pending.as_u8, 1); - ctx->total_bytes += ctx->block_size; - - /* message */ - clib_sha2_update (ctx, msg, len); - clib_sha2_final (ctx, i_digest); - - /* opad */ - clib_sha2_init (ctx, type); - for (i = 0; i < n_words; i++) - ctx->pending.as_uword[i] = key_data[i] ^ (uword) 0x5c5c5c5c5c5c5c5c; - if (ctx->block_size == SHA512_BLOCK_SIZE) - clib_sha512_block (ctx, ctx->pending.as_u8, 1); - else - clib_sha256_block (ctx, ctx->pending.as_u8, 1); - ctx->total_bytes += ctx->block_size; - - /* digest */ - clib_sha2_update (ctx, i_digest, ctx->digest_size); - clib_sha2_final (ctx, digest); -} - -#define clib_hmac_sha224(...) clib_hmac_sha2 (CLIB_SHA2_224, __VA_ARGS__) -#define clib_hmac_sha256(...) clib_hmac_sha2 (CLIB_SHA2_256, __VA_ARGS__) -#define clib_hmac_sha384(...) clib_hmac_sha2 (CLIB_SHA2_384, __VA_ARGS__) -#define clib_hmac_sha512(...) clib_hmac_sha2 (CLIB_SHA2_512, __VA_ARGS__) -#define clib_hmac_sha512_224(...) clib_hmac_sha2 (CLIB_SHA2_512_224, __VA_ARGS__) -#define clib_hmac_sha512_256(...) clib_hmac_sha2 (CLIB_SHA2_512_256, __VA_ARGS__) - -#endif /* included_sha2_h */ - -/* - * fd.io coding-style-patch-verification: ON - * - * Local Variables: - * eval: (c-set-style "gnu") - * End: - */ |