/* 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 "crypto_api.h"
#include "dcrypto.h"

/**
 * This file is mostly same as chip/g/crypto_api.c, but crypto_enabled()
 * now is provided from fips.c and has different implementation.
 */
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);
}