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- /*
- * Copyright 2014-2022 The GmSSL Project. All Rights Reserved.
- *
- * Licensed under the Apache License, Version 2.0 (the License); you may
- * not use this file except in compliance with the License.
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- */
- // RFC 5869
- #ifndef GMSSL_HKDF_H
- #define GMSSL_HKDF_H
- #include <string.h>
- #include <gmssl/digest.h>
- #include <gmssl/hmac.h>
- #ifdef __cplusplus
- extern "C" {
- #endif
- int hkdf_extract(const DIGEST *digest, const uint8_t *salt, size_t saltlen,
- const uint8_t *ikm, size_t ikmlen,
- uint8_t *prk, size_t *prklen);
- int hkdf_expand(const DIGEST *digest, const uint8_t *prk, size_t prklen,
- const uint8_t *opt_info, size_t opt_infolen,
- size_t L, uint8_t *okm);
- int sm3_hkdf_extract(const uint8_t *salt, size_t saltlen,
- const uint8_t *ikm, size_t ikmlen,
- uint8_t *prk, size_t *prklen);
- int sm3_hkdf_expand(const uint8_t *prk, size_t prklen,
- const uint8_t *opt_info, size_t opt_infolen,
- size_t L, uint8_t *okm);
- #ifdef __cplusplus
- }
- #endif
- #endif
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