82 lines
2.7 KiB
C
82 lines
2.7 KiB
C
/*
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* Secure RTP with libgcrypt
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* Copyright (C) 2007 Rémi Denis-Courmont
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public License
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* as published by the Free Software Foundation; either version 2.1
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* of the License, or (at your option) any later version.
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*
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* This library 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
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* GNU 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 this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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****************************************************************************/
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#ifndef LIBVLC_SRTP_H
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# define LIBVLC_SRTP_H 1
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#include <stdint.h>
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typedef struct srtp_session_t srtp_session_t;
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enum
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{
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SRTP_UNENCRYPTED=0x1, //< do not encrypt SRTP packets
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SRTCP_UNENCRYPTED=0x2, //< do not encrypt SRTCP packets
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SRTP_UNAUTHENTICATED=0x4, //< authenticate only SRTCP packets
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SRTP_RCC_MODE1=0x10, //< use Roll-over-Counter Carry mode 1
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SRTP_RCC_MODE2=0x20, //< use Roll-over-Counter Carry mode 2
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SRTP_RCC_MODE3=0x30, //< use Roll-over-Counter Carry mode 3 (insecure)
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SRTP_FLAGS_MASK=0x37 //< mask for valid flags
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};
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/** SRTP encryption algorithms (ciphers); same values as MIKEY */
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enum
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{
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SRTP_ENCR_NULL=0, //< no encryption
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SRTP_ENCR_AES_CM=1, //< AES counter mode
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SRTP_ENCR_AES_F8=2, //< AES F8 mode (not implemented)
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};
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/** SRTP authenticaton algorithms; same values as MIKEY */
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enum
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{
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SRTP_AUTH_NULL=0, //< no authentication code
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SRTP_AUTH_HMAC_SHA1=1, //< HMAC-SHA1
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};
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/** SRTP pseudo random function; same values as MIKEY */
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enum
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{
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SRTP_PRF_AES_CM=0, //< AES counter mode
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};
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# ifdef __cplusplus
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extern "C" {
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# endif
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srtp_session_t *srtp_create (int encr, int auth, unsigned tag_len, int prf,
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unsigned flags);
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void srtp_destroy (srtp_session_t *s);
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int srtp_setkey (srtp_session_t *s, const void *key, size_t keylen,
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const void *salt, size_t saltlen);
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int srtp_setkeystring (srtp_session_t *s, const char *key, const char *salt);
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void srtp_setrcc_rate (srtp_session_t *s, uint16_t rate);
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int srtp_send (srtp_session_t *s, uint8_t *buf, size_t *lenp, size_t maxsize);
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int srtp_recv (srtp_session_t *s, uint8_t *buf, size_t *lenp);
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int srtcp_send (srtp_session_t *s, uint8_t *buf, size_t *lenp, size_t maxsiz);
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int srtcp_recv (srtp_session_t *s, uint8_t *buf, size_t *lenp);
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# ifdef __cplusplus
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}
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# endif
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#endif |