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/* $OpenBSD: ssl_ciphers.c,v 1.1 2019/01/21 10:28:52 tb Exp $ */
/*
* Copyright (c) 2019 Theo Buehler <tb@openbsd.org>
*
* Permission to use, copy, modify, and 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.
*/
#include "ssl_locl.h"
int
ssl_cipher_is_permitted(const SSL_CIPHER *cipher, uint16_t min_ver,
uint16_t max_ver)
{
/* XXX: We only support DTLSv1 which is effectively TLSv1.1 */
if (min_ver == DTLS1_VERSION || max_ver == DTLS1_VERSION)
min_ver = max_ver = TLS1_1_VERSION;
switch(cipher->algorithm_ssl) {
case SSL_SSLV3:
if (min_ver <= TLS1_2_VERSION)
return 1;
break;
case SSL_TLSV1_2:
if (min_ver <= TLS1_2_VERSION && TLS1_2_VERSION <= max_ver)
return 1;
break;
case SSL_TLSV1_3:
if (min_ver <= TLS1_3_VERSION && TLS1_3_VERSION <= max_ver)
return 1;
break;
}
return 0;
}
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