24 lines
666 B
C
24 lines
666 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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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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__unused const uint8_t *salt, __unused size_t salt_len,
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__unused const uint8_t *info, __unused size_t info_len)
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{
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/* FIXME: currently, we only support one AaaG/Trusty
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* instance, so just simply copy the h/w seed to Trusty.
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* In the future, we will choose another crypto library
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* to derive multiple seeds in order to support multiple
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* AaaG/Trusty instances.
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*/
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memcpy_s(out_key, out_len, secret, secret_len);
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return 1;
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}
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