diff options
| author | Martin Storsjö <martin@martin.st> | 2012-10-21 01:20:35 +0300 |
|---|---|---|
| committer | Martin Storsjö <martin@martin.st> | 2013-01-15 11:54:34 +0200 |
| commit | ab2ad8bd56882c0ea160b154e8b836eb71abc49d (patch) | |
| tree | 9e17e9ded428400dade3e4ddfa8b4c2a84f52564 /libavformat/srtp.h | |
| parent | 8ee288d2586f216aa698ef8e6d107f02c813ea06 (diff) | |
lavf: Add functions for SRTP decryption/encryption
This supports the AES_CM_128_HMAC_SHA1_80 and
AES_CM_128_HMAC_SHA1_32 cipher suites (from RFC 4568) at the
moment. The main missing features are replay protection (which can be
added later without changing the internal API), and the F8 and null
ciphers.
Signed-off-by: Martin Storsjö <martin@martin.st>
Diffstat (limited to 'libavformat/srtp.h')
| -rw-r--r-- | libavformat/srtp.h | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/libavformat/srtp.h b/libavformat/srtp.h new file mode 100644 index 0000000000..a1cb92d2ba --- /dev/null +++ b/libavformat/srtp.h @@ -0,0 +1,52 @@ +/* + * 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 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 */ |