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45 lines
1.1 KiB
C
45 lines
1.1 KiB
C
/*
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* Copyright 2014-2021 The GmSSL Project Authors. All Rights Reserved.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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// RFC 5869
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#ifndef GMSSL_HKDF_H
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#define GMSSL_HKDF_H
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#include <string.h>
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#include <gmssl/digest.h>
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#include <gmssl/hmac.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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int hkdf_extract(const DIGEST *digest, const uint8_t *salt, size_t saltlen,
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const uint8_t *ikm, size_t ikmlen,
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uint8_t *prk, size_t *prklen);
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int hkdf_expand(const DIGEST *digest, const uint8_t *prk, size_t prklen,
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const uint8_t *info, size_t infolen,
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size_t L, uint8_t *okm);
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#ifdef __cplusplus
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}
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#endif
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#endif
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