379 lines
12 KiB
C
379 lines
12 KiB
C
// Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) All rights reserved.
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// SPDX-License-Identifier: Apache-2.0
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#include <openssl/sha.h>
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#include <string.h>
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#include <openssl/mem.h>
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#include "../../internal.h"
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#include "../digest/md32_common.h"
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#include "internal.h"
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int SHA224_Init(SHA256_CTX *sha) {
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OPENSSL_memset(sha, 0, sizeof(SHA256_CTX));
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sha->h[0] = 0xc1059ed8UL;
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sha->h[1] = 0x367cd507UL;
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sha->h[2] = 0x3070dd17UL;
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sha->h[3] = 0xf70e5939UL;
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sha->h[4] = 0xffc00b31UL;
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sha->h[5] = 0x68581511UL;
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sha->h[6] = 0x64f98fa7UL;
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sha->h[7] = 0xbefa4fa4UL;
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sha->md_len = SHA224_DIGEST_LENGTH;
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return 1;
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}
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int SHA256_Init(SHA256_CTX *sha) {
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OPENSSL_memset(sha, 0, sizeof(SHA256_CTX));
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sha->h[0] = 0x6a09e667UL;
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sha->h[1] = 0xbb67ae85UL;
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sha->h[2] = 0x3c6ef372UL;
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sha->h[3] = 0xa54ff53aUL;
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sha->h[4] = 0x510e527fUL;
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sha->h[5] = 0x9b05688cUL;
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sha->h[6] = 0x1f83d9abUL;
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sha->h[7] = 0x5be0cd19UL;
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sha->md_len = SHA256_DIGEST_LENGTH;
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return 1;
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}
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OPENSSL_STATIC_ASSERT(SHA256_CHAINING_LENGTH==SHA224_CHAINING_LENGTH,
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sha256_and_sha224_have_same_chaining_length)
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// sha256_init_from_state_impl is the implementation of
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// SHA256_Init_from_state and SHA224_Init_from_state
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// Note that the state h is always SHA256_CHAINING_LENGTH-byte long
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static int sha256_init_from_state_impl(SHA256_CTX *sha, int md_len,
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const uint8_t h[SHA256_CHAINING_LENGTH],
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uint64_t n) {
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if(n % ((uint64_t) SHA256_CBLOCK * 8) != 0) {
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// n is not a multiple of the block size in bits, so it fails
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return 0;
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}
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OPENSSL_memset(sha, 0, sizeof(SHA256_CTX));
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sha->md_len = md_len;
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const size_t out_words = SHA256_CHAINING_LENGTH / 4;
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for (size_t i = 0; i < out_words; i++) {
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sha->h[i] = CRYPTO_load_u32_be(h);
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h += 4;
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}
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sha->Nh = n >> 32;
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sha->Nl = n & 0xffffffff;
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return 1;
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}
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int SHA224_Init_from_state(SHA256_CTX *sha,
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const uint8_t h[SHA224_CHAINING_LENGTH],
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uint64_t n) {
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return sha256_init_from_state_impl(sha, SHA224_DIGEST_LENGTH, h, n);
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}
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int SHA256_Init_from_state(SHA256_CTX *sha,
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const uint8_t h[SHA256_CHAINING_LENGTH],
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uint64_t n) {
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return sha256_init_from_state_impl(sha, SHA256_DIGEST_LENGTH, h, n);
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}
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uint8_t *SHA224(const uint8_t *data, size_t len,
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uint8_t out[SHA224_DIGEST_LENGTH]) {
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// We have to verify that all the SHA services actually succeed before
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// updating the indicator state, so we lock the state here.
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FIPS_service_indicator_lock_state();
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SHA256_CTX ctx;
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const int ok = SHA224_Init(&ctx) &&
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SHA224_Update(&ctx, data, len) &&
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SHA224_Final(out, &ctx);
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FIPS_service_indicator_unlock_state();
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if(ok) {
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FIPS_service_indicator_update_state();
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}
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OPENSSL_cleanse(&ctx, sizeof(ctx));
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return out;
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}
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uint8_t *SHA256(const uint8_t *data, size_t len,
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uint8_t out[SHA256_DIGEST_LENGTH]) {
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// We have to verify that all the SHA services actually succeed before
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// updating the indicator state, so we lock the state here.
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FIPS_service_indicator_lock_state();
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SHA256_CTX ctx;
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const int ok = SHA256_Init(&ctx) &&
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SHA256_Update(&ctx, data, len) &&
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SHA256_Final(out, &ctx);
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FIPS_service_indicator_unlock_state();
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if(ok) {
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FIPS_service_indicator_update_state();
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}
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OPENSSL_cleanse(&ctx, sizeof(ctx));
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return out;
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}
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#if !defined(SHA256_ASM)
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static void sha256_block_data_order(uint32_t state[8], const uint8_t *in,
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size_t num);
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#endif
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void SHA256_Transform(SHA256_CTX *c, const uint8_t data[SHA256_CBLOCK]) {
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sha256_block_data_order(c->h, data, 1);
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}
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int SHA256_Update(SHA256_CTX *c, const void *data, size_t len) {
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crypto_md32_update(&sha256_block_data_order, c->h, c->data, SHA256_CBLOCK,
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&c->num, &c->Nh, &c->Nl, data, len);
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return 1;
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}
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int SHA224_Update(SHA256_CTX *ctx, const void *data, size_t len) {
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return SHA256_Update(ctx, data, len);
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}
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static int sha256_final_impl(uint8_t *out, size_t md_len, SHA256_CTX *c) {
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crypto_md32_final(&sha256_block_data_order, c->h, c->data, SHA256_CBLOCK,
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&c->num, c->Nh, c->Nl, /*is_big_endian=*/1);
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if (c->md_len != md_len) {
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return 0;
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}
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assert(md_len % 4 == 0);
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const size_t out_words = md_len / 4;
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for (size_t i = 0; i < out_words; i++) {
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CRYPTO_store_u32_be(out, c->h[i]);
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out += 4;
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}
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FIPS_service_indicator_update_state();
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return 1;
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}
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int SHA256_Final(uint8_t out[SHA256_DIGEST_LENGTH], SHA256_CTX *c) {
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return sha256_final_impl(out, SHA256_DIGEST_LENGTH, c);
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}
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int SHA224_Final(uint8_t out[SHA224_DIGEST_LENGTH], SHA256_CTX *ctx) {
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return sha256_final_impl(out, SHA224_DIGEST_LENGTH, ctx);
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}
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// sha256_get_state_impl is the implementation of
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// SHA256_get_state and SHA224_get_state
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// Note that the state out_h is always SHA256_CHAINING_LENGTH-byte long
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static int sha256_get_state_impl(SHA256_CTX *ctx,
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uint8_t out_h[SHA256_CHAINING_LENGTH],
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uint64_t *out_n) {
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if (ctx->Nl % ((uint64_t)SHA256_CBLOCK * 8) != 0) {
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// ctx->Nl is not a multiple of the block size in bits, so it fails
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return 0;
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}
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const size_t out_words = SHA256_CHAINING_LENGTH / 4;
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for (size_t i = 0; i < out_words; i++) {
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CRYPTO_store_u32_be(out_h, ctx->h[i]);
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out_h += 4;
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}
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*out_n = (((uint64_t)ctx->Nh) << 32) + ctx->Nl;
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return 1;
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}
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int SHA224_get_state(SHA256_CTX *ctx, uint8_t out_h[SHA224_CHAINING_LENGTH],
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uint64_t *out_n) {
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return sha256_get_state_impl(ctx, out_h, out_n);
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}
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int SHA256_get_state(SHA256_CTX *ctx, uint8_t out_h[SHA256_CHAINING_LENGTH],
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uint64_t *out_n) {
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return sha256_get_state_impl(ctx, out_h, out_n);
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}
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#if !defined(SHA256_ASM)
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#if !defined(SHA256_ASM_NOHW)
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static const uint32_t K256[64] = {
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0x428a2f98UL, 0x71374491UL, 0xb5c0fbcfUL, 0xe9b5dba5UL, 0x3956c25bUL,
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0x59f111f1UL, 0x923f82a4UL, 0xab1c5ed5UL, 0xd807aa98UL, 0x12835b01UL,
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0x243185beUL, 0x550c7dc3UL, 0x72be5d74UL, 0x80deb1feUL, 0x9bdc06a7UL,
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0xc19bf174UL, 0xe49b69c1UL, 0xefbe4786UL, 0x0fc19dc6UL, 0x240ca1ccUL,
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0x2de92c6fUL, 0x4a7484aaUL, 0x5cb0a9dcUL, 0x76f988daUL, 0x983e5152UL,
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0xa831c66dUL, 0xb00327c8UL, 0xbf597fc7UL, 0xc6e00bf3UL, 0xd5a79147UL,
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0x06ca6351UL, 0x14292967UL, 0x27b70a85UL, 0x2e1b2138UL, 0x4d2c6dfcUL,
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0x53380d13UL, 0x650a7354UL, 0x766a0abbUL, 0x81c2c92eUL, 0x92722c85UL,
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0xa2bfe8a1UL, 0xa81a664bUL, 0xc24b8b70UL, 0xc76c51a3UL, 0xd192e819UL,
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0xd6990624UL, 0xf40e3585UL, 0x106aa070UL, 0x19a4c116UL, 0x1e376c08UL,
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0x2748774cUL, 0x34b0bcb5UL, 0x391c0cb3UL, 0x4ed8aa4aUL, 0x5b9cca4fUL,
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0x682e6ff3UL, 0x748f82eeUL, 0x78a5636fUL, 0x84c87814UL, 0x8cc70208UL,
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0x90befffaUL, 0xa4506cebUL, 0xbef9a3f7UL, 0xc67178f2UL};
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// See FIPS 180-4, section 4.1.2.
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#define Sigma0(x) \
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(CRYPTO_rotr_u32((x), 2) ^ CRYPTO_rotr_u32((x), 13) ^ \
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CRYPTO_rotr_u32((x), 22))
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#define Sigma1(x) \
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(CRYPTO_rotr_u32((x), 6) ^ CRYPTO_rotr_u32((x), 11) ^ \
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CRYPTO_rotr_u32((x), 25))
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#define sigma0(x) \
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(CRYPTO_rotr_u32((x), 7) ^ CRYPTO_rotr_u32((x), 18) ^ ((x) >> 3))
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#define sigma1(x) \
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(CRYPTO_rotr_u32((x), 17) ^ CRYPTO_rotr_u32((x), 19) ^ ((x) >> 10))
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#define Ch(x, y, z) (((x) & (y)) ^ ((~(x)) & (z)))
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#define Maj(x, y, z) (((x) & (y)) ^ ((x) & (z)) ^ ((y) & (z)))
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#define ROUND_00_15(i, a, b, c, d, e, f, g, h) \
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do { \
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T1 += h + Sigma1(e) + Ch(e, f, g) + K256[i]; \
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h = Sigma0(a) + Maj(a, b, c); \
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d += T1; \
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h += T1; \
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} while (0)
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#define ROUND_16_63(i, a, b, c, d, e, f, g, h, X) \
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do { \
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s0 = X[(i + 1) & 0x0f]; \
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s0 = sigma0(s0); \
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s1 = X[(i + 14) & 0x0f]; \
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s1 = sigma1(s1); \
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T1 = X[(i) & 0x0f] += s0 + s1 + X[(i + 9) & 0x0f]; \
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ROUND_00_15(i, a, b, c, d, e, f, g, h); \
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} while (0)
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static void sha256_block_data_order_nohw(uint32_t state[8], const uint8_t *data,
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size_t num) {
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uint32_t a, b, c, d, e, f, g, h, s0, s1, T1;
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uint32_t X[16];
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int i;
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while (num--) {
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a = state[0];
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b = state[1];
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c = state[2];
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d = state[3];
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e = state[4];
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f = state[5];
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g = state[6];
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h = state[7];
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T1 = X[0] = CRYPTO_load_u32_be(data);
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data += 4;
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ROUND_00_15(0, a, b, c, d, e, f, g, h);
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T1 = X[1] = CRYPTO_load_u32_be(data);
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data += 4;
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ROUND_00_15(1, h, a, b, c, d, e, f, g);
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T1 = X[2] = CRYPTO_load_u32_be(data);
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data += 4;
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ROUND_00_15(2, g, h, a, b, c, d, e, f);
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T1 = X[3] = CRYPTO_load_u32_be(data);
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data += 4;
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ROUND_00_15(3, f, g, h, a, b, c, d, e);
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T1 = X[4] = CRYPTO_load_u32_be(data);
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data += 4;
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ROUND_00_15(4, e, f, g, h, a, b, c, d);
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T1 = X[5] = CRYPTO_load_u32_be(data);
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data += 4;
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ROUND_00_15(5, d, e, f, g, h, a, b, c);
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T1 = X[6] = CRYPTO_load_u32_be(data);
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data += 4;
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ROUND_00_15(6, c, d, e, f, g, h, a, b);
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T1 = X[7] = CRYPTO_load_u32_be(data);
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data += 4;
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ROUND_00_15(7, b, c, d, e, f, g, h, a);
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T1 = X[8] = CRYPTO_load_u32_be(data);
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data += 4;
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ROUND_00_15(8, a, b, c, d, e, f, g, h);
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T1 = X[9] = CRYPTO_load_u32_be(data);
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data += 4;
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ROUND_00_15(9, h, a, b, c, d, e, f, g);
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T1 = X[10] = CRYPTO_load_u32_be(data);
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data += 4;
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ROUND_00_15(10, g, h, a, b, c, d, e, f);
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T1 = X[11] = CRYPTO_load_u32_be(data);
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data += 4;
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ROUND_00_15(11, f, g, h, a, b, c, d, e);
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T1 = X[12] = CRYPTO_load_u32_be(data);
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data += 4;
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ROUND_00_15(12, e, f, g, h, a, b, c, d);
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T1 = X[13] = CRYPTO_load_u32_be(data);
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data += 4;
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ROUND_00_15(13, d, e, f, g, h, a, b, c);
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T1 = X[14] = CRYPTO_load_u32_be(data);
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data += 4;
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ROUND_00_15(14, c, d, e, f, g, h, a, b);
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T1 = X[15] = CRYPTO_load_u32_be(data);
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data += 4;
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ROUND_00_15(15, b, c, d, e, f, g, h, a);
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for (i = 16; i < 64; i += 8) {
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ROUND_16_63(i + 0, a, b, c, d, e, f, g, h, X);
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ROUND_16_63(i + 1, h, a, b, c, d, e, f, g, X);
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ROUND_16_63(i + 2, g, h, a, b, c, d, e, f, X);
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ROUND_16_63(i + 3, f, g, h, a, b, c, d, e, X);
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ROUND_16_63(i + 4, e, f, g, h, a, b, c, d, X);
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ROUND_16_63(i + 5, d, e, f, g, h, a, b, c, X);
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ROUND_16_63(i + 6, c, d, e, f, g, h, a, b, X);
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ROUND_16_63(i + 7, b, c, d, e, f, g, h, a, X);
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}
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state[0] += a;
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state[1] += b;
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state[2] += c;
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state[3] += d;
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state[4] += e;
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state[5] += f;
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state[6] += g;
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state[7] += h;
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}
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}
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#endif // !defined(SHA256_ASM_NOHW)
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static void sha256_block_data_order(uint32_t state[8], const uint8_t *data,
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size_t num) {
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#if defined(SHA256_ASM_HW)
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if (sha256_hw_capable()) {
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sha256_block_data_order_hw(state, data, num);
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return;
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}
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#endif
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#if defined(SHA256_ASM_AVX) && !defined(MY_ASSEMBLER_IS_TOO_OLD_FOR_AVX)
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if (sha256_avx_capable()) {
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sha256_block_data_order_avx(state, data, num);
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return;
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}
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#endif
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#if defined(SHA256_ASM_SSSE3)
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if (sha256_ssse3_capable()) {
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sha256_block_data_order_ssse3(state, data, num);
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return;
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}
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#endif
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#if defined(SHA256_ASM_NEON)
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if (CRYPTO_is_NEON_capable()) {
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sha256_block_data_order_neon(state, data, num);
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return;
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}
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#endif
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sha256_block_data_order_nohw(state, data, num);
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}
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#endif // !defined(SHA256_ASM)
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void SHA256_TransformBlocks(uint32_t state[8], const uint8_t *data,
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size_t num_blocks) {
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sha256_block_data_order(state, data, num_blocks);
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}
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#undef Sigma0
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#undef Sigma1
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#undef sigma0
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#undef sigma1
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#undef Ch
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#undef Maj
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#undef ROUND_00_15
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#undef ROUND_16_63
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