acrn-hypervisor/hypervisor/lib/crypto/crypto_api.c

51 lines
1.1 KiB
C

/*
* Copyright (C) 2018 Intel Corporation. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#include <rtl.h>
#include "mbedtls/hkdf.h"
#include "mbedtls/md.h"
int32_t hkdf_sha256(uint8_t *out_key, size_t out_len,
const uint8_t *secret, size_t secret_len,
const uint8_t *salt, size_t salt_len,
const uint8_t *info, size_t info_len)
{
int32_t ret = 0;
const mbedtls_md_info_t *md;
/* salt and info can be NULL, others can't */
if ((out_key != NULL) && (secret != NULL)) {
md = mbedtls_md_info_from_type(MBEDTLS_MD_SHA256);
if (md != NULL) {
if (mbedtls_hkdf(md, salt, salt_len, secret, secret_len,
info, info_len, out_key, out_len) == 0) {
ret = 1;
}
}
}
return ret;
}
int32_t hmac_sha256(uint8_t *out_key,
const uint8_t *secret, size_t secret_len,
const uint8_t *salt, size_t salt_len)
{
int32_t ret = 0;
const mbedtls_md_info_t *md;
if ((out_key != NULL) && (secret != NULL) && (salt != NULL)) {
md = mbedtls_md_info_from_type(MBEDTLS_MD_SHA256);
if (md != NULL) {
if (mbedtls_md_hmac(md, secret, secret_len, salt, salt_len, out_key) == 0) {
ret = 1;
}
}
}
return ret;
}