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/*
* Copyright 2017 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 "crypto_api.h"
#include "dcrypto.h"
void app_compute_hash(const void *p_buf, size_t num_bytes, void *p_hash,
size_t hash_len)
{
uint8_t sha1_digest[SHA_DIGEST_SIZE];
/*
* Use the built in dcrypto engine to generate the sha1 hash of the
* buffer.
*/
DCRYPTO_SHA1_hash(p_buf, num_bytes, sha1_digest);
memcpy(p_hash, sha1_digest, MIN(hash_len, sizeof(sha1_digest)));
if (hash_len > sizeof(sha1_digest))
memset((uint8_t *)p_hash + sizeof(sha1_digest), 0,
hash_len - sizeof(sha1_digest));
}
int app_cipher(const void *salt, void *out, const void *in, size_t size)
{
return DCRYPTO_app_cipher(NVMEM, salt, out, in, size);
}
int crypto_enabled(void)
{
return DCRYPTO_ladder_is_enabled();
}
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