-/*
- * 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.
+/* SPDX-License-Identifier: Apache-2.0
+ * Copyright(c) 2024 Cisco Systems, Inc.
*/
#ifndef included_sha2_h
#include <vppinfra/clib.h>
#include <vppinfra/vector.h>
+#include <vppinfra/string.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))
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))
0xa54ff53a, 0x510e527f, 0x9b05688c,
0x1f83d9ab, 0x5be0cd19 };
-static const u32 sha256_k[64] = {
+static const u32 clib_sha2_256_k[64] = {
0x428a2f98, 0x71374491, 0xb5c0fbcf, 0xe9b5dba5, 0x3956c25b, 0x59f111f1,
0x923f82a4, 0xab1c5ed5, 0xd807aa98, 0x12835b01, 0x243185be, 0x550c7dc3,
0x72be5d74, 0x80deb1fe, 0x9bdc06a7, 0xc19bf174, 0xe49b69c1, 0xefbe4786,
0x96283ee2a88effe3, 0xbe5e1e2553863992,
0x2b0199fc2c85b8aa, 0x0eb72ddc81c52ca2 };
-static const u64 sha512_k[80] = {
+static const u64 clib_sha2_512_k[80] = {
0x428a2f98d728ae22, 0x7137449123ef65cd, 0xb5c0fbcfec4d3b2f,
0xe9b5dba58189dbbc, 0x3956c25bf348b538, 0x59f111f1b605d019,
0x923f82a4af194f9b, 0xab1c5ed5da6d8118, 0xd807aa98a3030242,
CLIB_SHA2_512_256,
} clib_sha2_type_t;
-#define SHA2_MAX_BLOCK_SIZE SHA512_BLOCK_SIZE
-#define SHA2_MAX_DIGEST_SIZE SHA512_DIGEST_SIZE
+#define CLIB_SHA2_256_BLOCK_SIZE 64
+#define CLIB_SHA2_512_BLOCK_SIZE 128
+#define SHA2_MAX_BLOCK_SIZE CLIB_SHA2_512_BLOCK_SIZE
+#define SHA2_MAX_DIGEST_SIZE 64
-typedef struct
+static const struct
{
- u64 total_bytes;
- u16 n_pending;
u8 block_size;
u8 digest_size;
- union
- {
- u32 h32[8];
- u64 h64[8];
+ const u32 *h32;
+ const u64 *h64;
+} clib_sha2_variants[] = {
+ [CLIB_SHA2_224] = {
+ .block_size = CLIB_SHA2_256_BLOCK_SIZE,
+ .digest_size = 28,
+ .h32 = sha224_h,
+ },
+ [CLIB_SHA2_256] = {
+ .block_size = CLIB_SHA2_256_BLOCK_SIZE,
+ .digest_size = 32,
+ .h32 = sha256_h,
+ },
+ [CLIB_SHA2_384] = {
+ .block_size = CLIB_SHA2_512_BLOCK_SIZE,
+ .digest_size = 48,
+ .h64 = sha384_h,
+ },
+ [CLIB_SHA2_512] = {
+ .block_size = CLIB_SHA2_512_BLOCK_SIZE,
+ .digest_size = 64,
+ .h64 = sha512_h,
+ },
+ [CLIB_SHA2_512_224] = {
+ .block_size = CLIB_SHA2_512_BLOCK_SIZE,
+ .digest_size = 28,
+ .h64 = sha512_224_h,
+ },
+ [CLIB_SHA2_512_256] = {
+ .block_size = CLIB_SHA2_512_BLOCK_SIZE,
+ .digest_size = 32,
+ .h64 = sha512_256_h,
+ },
+};
+
+typedef union
+{
+ u32 h32[8];
+ u64 h64[8];
#ifdef CLIB_SHA256_ISA
- u32x4 h32x4[2];
+ u32x4 h32x4[2];
#endif
- };
+} clib_sha2_h_t;
+
+typedef struct
+{
+ u64 total_bytes;
+ u16 n_pending;
+ clib_sha2_h_t h;
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_state_t;
+
+typedef struct
+{
+ clib_sha2_type_t type;
+ u8 block_size;
+ u8 digest_size;
+ clib_sha2_state_t state;
} clib_sha2_ctx_t;
static_always_inline void
-clib_sha2_init (clib_sha2_ctx_t *ctx, clib_sha2_type_t type)
+clib_sha2_state_init (clib_sha2_state_t *state, clib_sha2_type_t type)
{
- const u32 *h32 = 0;
- const u64 *h64 = 0;
+ clib_sha2_state_t st = {};
- 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)
+ if (clib_sha2_variants[type].block_size == CLIB_SHA2_256_BLOCK_SIZE)
for (int i = 0; i < 8; i++)
- ctx->h32[i] = h32[i];
-
- if (h64)
+ st.h.h32[i] = clib_sha2_variants[type].h32[i];
+ else
for (int i = 0; i < 8; i++)
- ctx->h64[i] = h64[i];
+ st.h.h64[i] = clib_sha2_variants[type].h64[i];
+
+ *state = st;
+}
+
+static_always_inline void
+clib_sha2_init (clib_sha2_ctx_t *ctx, clib_sha2_type_t type)
+{
+ clib_sha2_state_init (&ctx->state, type);
+ ctx->block_size = clib_sha2_variants[type].block_size;
+ ctx->digest_size = clib_sha2_variants[type].digest_size;
+ ctx->type = type;
}
#ifdef CLIB_SHA256_ISA
clib_sha256_vec_4_rounds (u32x4 w, u8 n, u32x4 s[])
{
#ifdef CLIB_SHA256_ISA_INTEL
- u32x4 r = *(u32x4 *) (sha256_k + 4 * n) + w;
+ u32x4 r = *(u32x4 *) (clib_sha2_256_k + 4 * n) + w;
s[0] = (u32x4) _mm_sha256rnds2_epu32 ((__m128i) s[0], (__m128i) s[1],
(__m128i) r);
r = (u32x4) u64x2_interleave_hi ((u64x2) r, (u64x2) r);
(__m128i) r);
#elif defined(CLIB_SHA256_ISA_ARM)
u32x4 r0, s0;
- const u32x4u *k = (u32x4u *) sha256_k;
+ const u32x4u *k = (u32x4u *) clib_sha2_256_k;
r0 = w + k[n];
s0 = s[0];
#endif
static inline void
-clib_sha256_block (clib_sha2_ctx_t *ctx, const u8 *msg, uword n_blocks)
+clib_sha256_block (clib_sha2_state_t *st, const u8 *msg, uword n_blocks)
{
#if defined(CLIB_SHA256_ISA)
u32x4 h[2];
u32x4u *m = (u32x4u *) msg;
- h[0] = ctx->h32x4[0];
- h[1] = ctx->h32x4[1];
+ h[0] = st->h.h32x4[0];
+ h[1] = st->h.h32x4[1];
clib_sha256_vec_shuffle (h);
clib_sha256_vec_shuffle (h);
- ctx->h32x4[0] = h[0];
- ctx->h32x4[1] = h[1];
+ st->h.h32x4[0] = h[0];
+ st->h.h32x4[1] = h[1];
#else
u32 w[64], s[8], i;
+ clib_sha2_h_t h;
+
+ h = st->h;
- while (n_blocks)
+ for (; n_blocks; msg += CLIB_SHA2_256_BLOCK_SIZE, n_blocks--)
{
for (i = 0; i < 8; i++)
- s[i] = ctx->h32[i];
+ s[i] = h.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]);
+ w[i] = clib_net_to_host_u32 ((((u32u *) msg)[i]));
+ SHA256_TRANSFORM (s, w, i, clib_sha2_256_k[i]);
}
for (i = 16; i < 64; i++)
{
SHA256_MSG_SCHED (w, i);
- SHA256_TRANSFORM (s, w, i, sha256_k[i]);
+ SHA256_TRANSFORM (s, w, i, clib_sha2_256_k[i]);
}
for (i = 0; i < 8; i++)
- ctx->h32[i] += s[i];
-
- /* next */
- msg += SHA256_BLOCK_SIZE;
- n_blocks--;
+ h.h32[i] += s[i];
}
+
+ st->h = h;
#endif
}
static_always_inline void
-clib_sha512_block (clib_sha2_ctx_t *ctx, const u8 *msg, uword n_blocks)
+clib_sha512_block (clib_sha2_state_t *st, const u8 *msg, uword n_blocks)
{
u64 w[80], s[8], i;
+ clib_sha2_h_t h;
+
+ h = st->h;
- while (n_blocks)
+ for (; n_blocks; msg += CLIB_SHA2_512_BLOCK_SIZE, n_blocks--)
{
for (i = 0; i < 8; i++)
- s[i] = ctx->h64[i];
+ s[i] = h.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]);
+ w[i] = clib_net_to_host_u64 ((((u64u *) msg)[i]));
+ SHA512_TRANSFORM (s, w, i, clib_sha2_512_k[i]);
}
for (i = 16; i < 80; i++)
{
SHA512_MSG_SCHED (w, i);
- SHA512_TRANSFORM (s, w, i, sha512_k[i]);
+ SHA512_TRANSFORM (s, w, i, clib_sha2_512_k[i]);
}
for (i = 0; i < 8; i++)
- ctx->h64[i] += s[i];
-
- /* next */
- msg += SHA512_BLOCK_SIZE;
- n_blocks--;
+ h.h64[i] += s[i];
}
+
+ st->h = h;
}
static_always_inline void
-clib_sha2_update (clib_sha2_ctx_t *ctx, const u8 *msg, uword n_bytes)
+clib_sha2_update_internal (clib_sha2_state_t *st, u8 block_size, const u8 *msg,
+ uword n_bytes)
{
uword n_blocks;
- if (ctx->n_pending)
+ if (st->n_pending)
{
- uword n_left = ctx->block_size - ctx->n_pending;
+ uword n_left = block_size - st->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;
+ clib_memcpy_fast (st->pending.as_u8 + st->n_pending, msg, n_bytes);
+ st->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);
+ clib_memcpy_fast (st->pending.as_u8 + st->n_pending, msg, n_left);
+ if (block_size == CLIB_SHA2_512_BLOCK_SIZE)
+ clib_sha512_block (st, st->pending.as_u8, 1);
else
- clib_sha256_block (ctx, ctx->pending.as_u8, 1);
- ctx->n_pending = 0;
- ctx->total_bytes += ctx->block_size;
+ clib_sha256_block (st, st->pending.as_u8, 1);
+ st->n_pending = 0;
+ st->total_bytes += block_size;
n_bytes -= n_left;
msg += n_left;
}
}
- if ((n_blocks = n_bytes / ctx->block_size))
+ if ((n_blocks = n_bytes / block_size))
{
- if (ctx->block_size == SHA512_BLOCK_SIZE)
- clib_sha512_block (ctx, msg, n_blocks);
+ if (block_size == CLIB_SHA2_512_BLOCK_SIZE)
+ clib_sha512_block (st, 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;
+ clib_sha256_block (st, msg, n_blocks);
+ n_bytes -= n_blocks * block_size;
+ msg += n_blocks * block_size;
+ st->total_bytes += n_blocks * 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;
+ clib_memset_u8 (st->pending.as_u8, 0, block_size);
+ clib_memcpy_fast (st->pending.as_u8, msg, n_bytes);
+ st->n_pending = n_bytes;
}
else
- ctx->n_pending = 0;
+ st->n_pending = 0;
}
static_always_inline void
-clib_sha2_final (clib_sha2_ctx_t *ctx, u8 *digest)
+clib_sha2_update (clib_sha2_ctx_t *ctx, const u8 *msg, uword n_bytes)
+{
+ clib_sha2_update_internal (&ctx->state, ctx->block_size, msg, n_bytes);
+}
+
+static_always_inline void
+clib_sha2_final_internal (clib_sha2_state_t *st, u8 block_size, u8 digest_size,
+ u8 *digest)
{
int i;
- ctx->total_bytes += ctx->n_pending;
- if (ctx->n_pending == 0)
+ st->total_bytes += st->n_pending;
+ if (st->n_pending == 0)
{
- clib_memset (ctx->pending.as_u8, 0, ctx->block_size);
- ctx->pending.as_u8[0] = 0x80;
+ clib_memset (st->pending.as_u8, 0, block_size);
+ st->pending.as_u8[0] = 0x80;
}
- else if (ctx->n_pending + sizeof (u64) + sizeof (u8) > ctx->block_size)
+ else if (st->n_pending + sizeof (u64) + sizeof (u8) > 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);
+ st->pending.as_u8[st->n_pending] = 0x80;
+ if (block_size == CLIB_SHA2_512_BLOCK_SIZE)
+ clib_sha512_block (st, st->pending.as_u8, 1);
else
- clib_sha256_block (ctx, ctx->pending.as_u8, 1);
- clib_memset (ctx->pending.as_u8, 0, ctx->block_size);
+ clib_sha256_block (st, st->pending.as_u8, 1);
+ clib_memset (st->pending.as_u8, 0, block_size);
}
else
- ctx->pending.as_u8[ctx->n_pending] = 0x80;
+ st->pending.as_u8[st->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);
+ st->pending.as_u64[block_size / 8 - 1] =
+ clib_net_to_host_u64 (st->total_bytes * 8);
- if (ctx->block_size == SHA512_BLOCK_SIZE)
+ if (block_size == CLIB_SHA2_512_BLOCK_SIZE)
{
- for (i = 0; i < ctx->digest_size / sizeof (u64); i++)
- *((u64 *) digest + i) = clib_net_to_host_u64 (ctx->h64[i]);
+ clib_sha512_block (st, st->pending.as_u8, 1);
+ for (i = 0; i < digest_size / sizeof (u64); i++)
+ ((u64 *) digest)[i] = clib_net_to_host_u64 (st->h.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);
+ if (i * sizeof (u64) < digest_size)
+ ((u32 *) digest)[2 * i] = clib_net_to_host_u32 (st->h.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]);
+ {
+ clib_sha256_block (st, st->pending.as_u8, 1);
+ for (i = 0; i < digest_size / sizeof (u32); i++)
+ *((u32 *) digest + i) = clib_net_to_host_u32 (st->h.h32[i]);
+ }
+}
+
+static_always_inline void
+clib_sha2_final (clib_sha2_ctx_t *ctx, u8 *digest)
+{
+ clib_sha2_final_internal (&ctx->state, ctx->block_size, ctx->digest_size,
+ digest);
}
static_always_inline void
#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)
+/*
+ * HMAC
+ */
+
+typedef struct
{
- 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_h_t ipad_h;
+ clib_sha2_h_t opad_h;
+} clib_sha2_hmac_key_data_t;
+
+typedef struct
+{
+ clib_sha2_type_t type;
+ u8 block_size;
+ u8 digest_size;
+ clib_sha2_state_t ipad_state;
+ clib_sha2_state_t opad_state;
+} clib_sha2_hmac_ctx_t;
- clib_sha2_init (ctx, type);
- n_words = ctx->block_size / sizeof (uword);
+static_always_inline void
+clib_sha2_hmac_key_data (clib_sha2_type_t type, const u8 *key, uword key_len,
+ clib_sha2_hmac_key_data_t *kd)
+{
+ u8 block_size = clib_sha2_variants[type].block_size;
+ u8 data[SHA2_MAX_BLOCK_SIZE] = {};
+ u8 ikey[SHA2_MAX_BLOCK_SIZE];
+ u8 okey[SHA2_MAX_BLOCK_SIZE];
+ clib_sha2_state_t ipad_state;
+ clib_sha2_state_t opad_state;
/* key */
- if (key_len > ctx->block_size)
+ if (key_len > 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);
+ clib_sha2_ctx_t ctx;
+ clib_sha2_init (&ctx, type);
+ clib_sha2_update (&ctx, key, key_len);
+ clib_sha2_final (&ctx, (u8 *) data);
}
else
+ clib_memcpy_fast (data, key, key_len);
+
+ for (int i = 0, w = 0; w < block_size; w += sizeof (uword), i++)
{
- for (i = 0; i < n_words; i++)
- key_data[i] = 0;
- clib_memcpy_fast (key_data, key, key_len);
+ ((uwordu *) ikey)[i] = ((uwordu *) data)[i] ^ 0x3636363636363636UL;
+ ((uwordu *) okey)[i] = ((uwordu *) data)[i] ^ 0x5c5c5c5c5c5c5c5cUL;
}
- /* 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);
+ clib_sha2_state_init (&ipad_state, type);
+ clib_sha2_state_init (&opad_state, type);
+
+ if (block_size == CLIB_SHA2_512_BLOCK_SIZE)
+ {
+ clib_sha512_block (&ipad_state, ikey, 1);
+ clib_sha512_block (&opad_state, okey, 1);
+ }
else
- clib_sha256_block (ctx, ctx->pending.as_u8, 1);
- ctx->total_bytes += ctx->block_size;
+ {
+ clib_sha256_block (&ipad_state, ikey, 1);
+ clib_sha256_block (&opad_state, okey, 1);
+ }
+
+ kd->ipad_h = ipad_state.h;
+ kd->opad_h = opad_state.h;
+}
+
+static_always_inline void
+clib_sha2_hmac_init (clib_sha2_hmac_ctx_t *ctx, clib_sha2_type_t type,
+ clib_sha2_hmac_key_data_t *kd)
+{
+ u8 block_size = clib_sha2_variants[type].block_size;
+ u8 digest_size = clib_sha2_variants[type].digest_size;
+
+ *ctx = (clib_sha2_hmac_ctx_t) {
+ .type = type,
+ .block_size = block_size,
+ .digest_size = digest_size,
+ .ipad_state = {
+ .h = kd->ipad_h,
+ .total_bytes = block_size,
+ },
+ .opad_state = {
+ .h = kd->opad_h,
+ .total_bytes = block_size,
+ },
+ };
+}
+
+static_always_inline void
+clib_sha2_hmac_update (clib_sha2_hmac_ctx_t *ctx, const u8 *msg, uword len)
+{
+ clib_sha2_update_internal (&ctx->ipad_state, ctx->block_size, msg, len);
+}
+
+static_always_inline void
+clib_sha2_hmac_final (clib_sha2_hmac_ctx_t *ctx, u8 *digest)
+{
+ u8 i_digest[SHA2_MAX_DIGEST_SIZE];
+
+ clib_sha2_final_internal (&ctx->ipad_state, ctx->block_size,
+ ctx->digest_size, i_digest);
+ clib_sha2_update_internal (&ctx->opad_state, ctx->block_size, i_digest,
+ ctx->digest_size);
+ clib_sha2_final_internal (&ctx->opad_state, ctx->block_size,
+ ctx->digest_size, digest);
+}
+
+static_always_inline void
+clib_sha2_hmac (clib_sha2_type_t type, const u8 *key, uword key_len,
+ const u8 *msg, uword len, u8 *digest)
+{
+ clib_sha2_hmac_ctx_t _ctx, *ctx = &_ctx;
+ clib_sha2_hmac_key_data_t kd;
- /* digest */
- clib_sha2_update (ctx, i_digest, ctx->digest_size);
- clib_sha2_final (ctx, digest);
+ clib_sha2_hmac_key_data (type, key, key_len, &kd);
+ clib_sha2_hmac_init (ctx, type, &kd);
+ clib_sha2_hmac_update (ctx, msg, len);
+ clib_sha2_hmac_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_sha224(...) clib_sha2_hmac (CLIB_SHA2_224, __VA_ARGS__)
+#define clib_hmac_sha256(...) clib_sha2_hmac (CLIB_SHA2_256, __VA_ARGS__)
+#define clib_hmac_sha384(...) clib_sha2_hmac (CLIB_SHA2_384, __VA_ARGS__)
+#define clib_hmac_sha512(...) clib_sha2_hmac (CLIB_SHA2_512, __VA_ARGS__)
#define clib_hmac_sha512_224(...) \
- clib_hmac_sha2 (CLIB_SHA2_512_224, __VA_ARGS__)
+ clib_sha2_hmac (CLIB_SHA2_512_224, __VA_ARGS__)
#define clib_hmac_sha512_256(...) \
- clib_hmac_sha2 (CLIB_SHA2_512_256, __VA_ARGS__)
+ clib_sha2_hmac (CLIB_SHA2_512_256, __VA_ARGS__)
#endif /* included_sha2_h */
Code Review / vpp.git / commitdiff