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https://github.com/projectacrn/acrn-hypervisor.git
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8d35f4e0e8
Derive multiple seeds to support multiple guest VMs Signed-off-by: Chen, Gang G <gang.g.chen@intel.com>
32 lines
586 B
C
32 lines
586 B
C
/*
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* Copyright (C) 2018 Intel Corporation. All rights reserved.
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*
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* SPDX-License-Identifier: BSD-3-Clause
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*/
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#include <rtl.h>
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#include "mbedtls/hkdf.h"
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int hkdf_sha256(uint8_t *out_key, size_t out_len,
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const uint8_t *secret, size_t secret_len,
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const uint8_t *salt, size_t salt_len,
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const uint8_t *info, size_t info_len)
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{
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const mbedtls_md_info_t *md;
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md = mbedtls_md_info_from_type(MBEDTLS_MD_SHA256);
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if (!md) {
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return 0;
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}
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if (mbedtls_hkdf(md,
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salt, salt_len,
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secret, secret_len,
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info, info_len,
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out_key, out_len) != 0) {
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return 0;
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}
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return 1;
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}
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