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/* Copyright (c) 2018, Google Inc.
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
* SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
* OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
#ifndef OPENSSL_HEADER_CRYPTO_FIPSMODULE_TLS_INTERNAL_H
#define OPENSSL_HEADER_CRYPTO_FIPSMODULE_TLS_INTERNAL_H
#include <openssl/base.h>
#if defined(__cplusplus)
extern "C" {
#endif
// tls1_prf calculates |out_len| bytes of the TLS PDF, using |digest|, and
// writes them to |out|. It returns one on success and zero on error.
OPENSSL_EXPORT int CRYPTO_tls1_prf(const EVP_MD *digest,
uint8_t *out, size_t out_len,
const uint8_t *secret, size_t secret_len,
const char *label, size_t label_len,
const uint8_t *seed1, size_t seed1_len,
const uint8_t *seed2, size_t seed2_len);
// CRYPTO_tls13_hkdf_expand_label computes the TLS 1.3 KDF function of the same
// name. See https://www.rfc-editor.org/rfc/rfc8446#section-7.1.
OPENSSL_EXPORT int CRYPTO_tls13_hkdf_expand_label(
uint8_t *out, size_t out_len, const EVP_MD *digest, //
const uint8_t *secret, size_t secret_len, //
const uint8_t *label, size_t label_len, //
const uint8_t *hash, size_t hash_len);
#if defined(__cplusplus)
}
#endif
#endif // OPENSSL_HEADER_CRYPTO_FIPSMODULE_TLS_INTERNAL_H