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/*
* Copyright Amazon.com, Inc. or its affiliates. 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.
* A copy of the License is located at
*
* http://aws.amazon.com/apache2.0
*
* or in the "license" file accompanying this file. This file is distributed
* on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
* express or implied. See the License for the specific language governing
* permissions and limitations under the License.
*/
#pragma once
#include "api/s2n.h"
#include "crypto/s2n_hash.h"
#include "crypto/s2n_tls13_keys.h"
struct s2n_handshake_hashes {
struct s2n_hash_state md5;
struct s2n_hash_state sha1;
struct s2n_hash_state sha224;
struct s2n_hash_state sha256;
struct s2n_hash_state sha384;
struct s2n_hash_state sha512;
struct s2n_hash_state md5_sha1;
/* TLS1.3 requires transcript hash digests to calculate secrets.
*/
uint8_t transcript_hash_digest[S2N_TLS13_SECRET_MAX_LEN];
/* To avoid allocating memory for hash objects, we reuse one temporary hash object.
* Do NOT rely on this hash state maintaining its value outside of the current context.
*/
struct s2n_hash_state hash_workspace;
};
S2N_RESULT s2n_handshake_hashes_new(struct s2n_handshake_hashes **hashes);
S2N_RESULT s2n_handshake_hashes_wipe(struct s2n_handshake_hashes *hashes);
S2N_CLEANUP_RESULT s2n_handshake_hashes_free(struct s2n_handshake_hashes **hashes);
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