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/* $OpenBSD: tls13_internal.h,v 1.1 2018/11/07 19:43:12 beck Exp $ */
/* Copyright (c) 2018, Bob Beck <beck@openbsd.org>
*
* 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.
*/
struct tls13_secret {
uint8_t *data;
size_t len;
};
/* RFC 8446 Section 7.1 Page 92 */
struct tls13_secrets {
int resumption;
int init_done;
int early_done;
int handshake_done;
int schedule_done;
int insecure; /* Set by tests */
struct tls13_secret zeros;
struct tls13_secret extracted_early;
struct tls13_secret binder_key;
struct tls13_secret client_early_traffic;
struct tls13_secret early_exporter_master;
struct tls13_secret derived_early;
struct tls13_secret extracted_handshake;
struct tls13_secret client_handshake_traffic;
struct tls13_secret server_handshake_traffic;
struct tls13_secret derived_handshake;
struct tls13_secret extracted_master;
struct tls13_secret client_application_traffic;
struct tls13_secret server_application_traffic;
struct tls13_secret exporter_master;
struct tls13_secret resumption_master;
};
struct tls13_secrets *tls13_secrets_new(size_t hash_length);
void tls13_secrets_init(struct tls13_secrets *secrets, int resumption);
void tls13_secrets_destroy(struct tls13_secrets *secrets);
int tls13_derive_early_secrets(struct tls13_secrets *secrets,
const EVP_MD *digest,uint8_t *psk, size_t psk_len,
const struct tls13_secret *context);
int tls13_derive_handshake_secrets(struct tls13_secrets *secrets,
const EVP_MD *digest, const uint8_t *ecdhe, size_t ecdhe_len,
const struct tls13_secret *context);
int tls13_derive_application_secrets(struct tls13_secrets *secrets,
const EVP_MD *digest, const struct tls13_secret *context);
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