/* * 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 */