mirror of
https://git.ffmpeg.org/ffmpeg.git
synced 2024-12-25 00:32:31 +00:00
e1d0b3d875
The main difference to the existing suites from RFC 4568 is that the version with a 32 bit HMAC still uses 80 bit HMAC for RTCP packets. Signed-off-by: Martin Storsjö <martin@martin.st>
53 lines
1.6 KiB
C
53 lines
1.6 KiB
C
/*
|
|
* SRTP encryption/decryption
|
|
* Copyright (c) 2012 Martin Storsjo
|
|
*
|
|
* This file is part of Libav.
|
|
*
|
|
* Libav is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2.1 of the License, or (at your option) any later version.
|
|
*
|
|
* Libav is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with Libav; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
|
|
#ifndef AVFORMAT_SRTP_H
|
|
#define AVFORMAT_SRTP_H
|
|
|
|
#include <stdint.h>
|
|
|
|
struct AVAES;
|
|
struct AVHMAC;
|
|
|
|
struct SRTPContext {
|
|
struct AVAES *aes;
|
|
struct AVHMAC *hmac;
|
|
int rtp_hmac_size, rtcp_hmac_size;
|
|
uint8_t master_key[16];
|
|
uint8_t master_salt[14];
|
|
uint8_t rtp_key[16], rtcp_key[16];
|
|
uint8_t rtp_salt[14], rtcp_salt[14];
|
|
uint8_t rtp_auth[20], rtcp_auth[20];
|
|
int seq_largest, seq_initialized;
|
|
uint32_t roc;
|
|
|
|
uint32_t rtcp_index;
|
|
};
|
|
|
|
int ff_srtp_set_crypto(struct SRTPContext *s, const char *suite,
|
|
const char *params);
|
|
void ff_srtp_free(struct SRTPContext *s);
|
|
int ff_srtp_decrypt(struct SRTPContext *s, uint8_t *buf, int *lenptr);
|
|
int ff_srtp_encrypt(struct SRTPContext *s, const uint8_t *in, int len,
|
|
uint8_t *out, int outlen);
|
|
|
|
#endif /* AVFORMAT_SRTP_H */
|