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/* Copyright 2021 The Chromium OS Authors. All rights reserved.
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "internal.h"
size_t DCRYPTO_hash_size(enum hashing_mode mode)
{
if (!fips_crypto_allowed())
return 0;
switch (mode) {
case HASH_SHA1:
return SHA1_DIGEST_SIZE;
case HASH_SHA256:
return SHA256_DIGEST_SIZE;
#ifdef CONFIG_UPTO_SHA512
case HASH_SHA384:
return SHA384_DIGEST_SIZE;
case HASH_SHA512:
return SHA512_DIGEST_SIZE;
#endif
default:
return 0;
}
return 0;
}
enum dcrypto_result DCRYPTO_sw_hash_init(union hash_ctx *ctx,
enum hashing_mode mode)
{
if (!fips_crypto_allowed())
return DCRYPTO_FAIL;
switch (mode) {
case HASH_SHA1:
SHA1_sw_init(&ctx->sha1);
break;
case HASH_SHA256:
SHA256_sw_init(&ctx->sha256);
break;
#ifdef CONFIG_UPTO_SHA512
case HASH_SHA384:
SHA384_sw_init(&ctx->sha384);
break;
case HASH_SHA512:
SHA512_sw_init(&ctx->sha512);
break;
#endif
default:
return DCRYPTO_FAIL;
}
return DCRYPTO_OK;
}
enum dcrypto_result DCRYPTO_hw_hash_init(union hash_ctx *ctx,
enum hashing_mode mode)
{
if (!fips_crypto_allowed())
return DCRYPTO_FAIL;
switch (mode) {
case HASH_SHA1:
SHA1_hw_init(&ctx->sha1);
break;
case HASH_SHA256:
SHA256_hw_init(&ctx->sha256);
break;
#ifdef CONFIG_UPTO_SHA512
case HASH_SHA384:
SHA384_hw_init(&ctx->sha384);
break;
case HASH_SHA512:
SHA512_hw_init(&ctx->sha512);
break;
#endif
default:
return DCRYPTO_FAIL;
}
return DCRYPTO_OK;
}
enum dcrypto_result DCRYPTO_sw_hmac_init(union hmac_ctx *ctx, const void *key,
size_t len, enum hashing_mode mode)
{
if (!fips_crypto_allowed())
return DCRYPTO_FAIL;
switch (mode) {
case HASH_SHA1:
SHA1_sw_init(&ctx->hmac_sha1.hash);
break;
case HASH_SHA256:
SHA256_sw_init(&ctx->hmac_sha256.hash);
break;
#ifdef CONFIG_UPTO_SHA512
case HASH_SHA384:
SHA384_sw_init(&ctx->hmac_sha384.hash);
break;
case HASH_SHA512:
SHA512_sw_init(&ctx->hmac_sha512.hash);
break;
#endif
default:
return DCRYPTO_FAIL;
}
HMAC_sw_init(ctx, key, len);
return DCRYPTO_OK;
}
enum dcrypto_result DCRYPTO_hw_hmac_init(union hmac_ctx *ctx, const void *key,
size_t len, enum hashing_mode mode)
{
if (!fips_crypto_allowed())
return DCRYPTO_FAIL;
switch (mode) {
case HASH_SHA1:
SHA1_hw_init(&ctx->hmac_sha1.hash);
HMAC_sw_init(ctx, key, len);
break;
case HASH_SHA256:
HMAC_SHA256_hw_init(&ctx->hmac_sha256, key, len);
break;
#ifdef CONFIG_UPTO_SHA512
case HASH_SHA384:
SHA384_hw_init(&ctx->hmac_sha384.hash);
HMAC_sw_init(ctx, key, len);
break;
case HASH_SHA512:
SHA512_hw_init(&ctx->hmac_sha512.hash);
HMAC_sw_init(ctx, key, len);
break;
#endif
default:
return DCRYPTO_FAIL;
}
return DCRYPTO_OK;
}
const uint8_t *DCRYPTO_SHA1_hash(const void *data, size_t n, uint8_t *digest)
{
if (!fips_crypto_allowed())
return NULL;
if (is_not_aligned(digest)) {
struct sha1_digest d;
SHA1_hw_hash(data, n, &d);
memcpy(digest, d.b8, sizeof(d));
} else
SHA1_hw_hash(data, n, (struct sha1_digest *)digest);
return digest;
}
const uint8_t *DCRYPTO_SHA256_hash(const void *data, size_t n, uint8_t *digest)
{
if (!fips_crypto_allowed())
return NULL;
if (is_not_aligned(digest)) {
struct sha256_digest d;
SHA256_hw_hash(data, n, &d);
memcpy(digest, d.b8, sizeof(d));
} else
SHA256_hw_hash(data, n, (struct sha256_digest *)digest);
return digest;
}
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