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53 lines
1.6 KiB
C
Executable File
53 lines
1.6 KiB
C
Executable File
/*
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* SRTP encryption/decryption
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* Copyright (c) 2012 Martin Storsjo
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef AVFORMAT_SRTP_H
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#define AVFORMAT_SRTP_H
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#include <stdint.h>
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struct AVAES;
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struct AVHMAC;
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struct SRTPContext {
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struct AVAES *aes;
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struct AVHMAC *hmac;
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int rtp_hmac_size, rtcp_hmac_size;
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uint8_t master_key[16];
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uint8_t master_salt[14];
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uint8_t rtp_key[16], rtcp_key[16];
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uint8_t rtp_salt[14], rtcp_salt[14];
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uint8_t rtp_auth[20], rtcp_auth[20];
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int seq_largest, seq_initialized;
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uint32_t roc;
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uint32_t rtcp_index;
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};
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int ff_srtp_set_crypto(struct SRTPContext *s, const char *suite,
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const char *params);
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void ff_srtp_free(struct SRTPContext *s);
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int ff_srtp_decrypt(struct SRTPContext *s, uint8_t *buf, int *lenptr);
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int ff_srtp_encrypt(struct SRTPContext *s, const uint8_t *in, int len,
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uint8_t *out, int outlen);
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#endif /* AVFORMAT_SRTP_H */
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