/usr/include/asterisk/res_srtp.h is in asterisk-dev 1:13.14.1~dfsg-2+deb9u4.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 | /*
* Asterisk -- An open source telephony toolkit.
*
* Copyright (C) 2010 FIXME
*
* See http://www.asterisk.org for more information about
* the Asterisk project. Please do not directly contact
* any of the maintainers of this project for assistance;
* the project provides a web site, mailing lists and IRC
* channels for your use.
*
* This program is free software, distributed under the terms of
* the GNU General Public License Version 2. See the LICENSE file
* at the top of the source tree.
*/
/*! \file
* \brief SRTP resource
*/
#ifndef _ASTERISK_RES_SRTP_H
#define _ASTERISK_RES_SRTP_H
struct ast_srtp;
struct ast_srtp_policy;
struct ast_rtp_instance;
struct ast_srtp_cb {
int (*no_ctx)(struct ast_rtp_instance *rtp, unsigned long ssrc, void *data);
};
struct ast_srtp_res {
/*! Create a new SRTP session for an RTP instance with a default policy */
int (*create)(struct ast_srtp **srtp, struct ast_rtp_instance *rtp, struct ast_srtp_policy *policy);
/* Replace an existing SRTP session with a new session, along with a new default policy */
int (*replace)(struct ast_srtp **srtp, struct ast_rtp_instance *rtp, struct ast_srtp_policy *policy);
/*! Destroy an SRTP session, along with all associated policies */
void (*destroy)(struct ast_srtp *srtp);
/* Add a new stream to an existing SRTP session. Note that the policy cannot be for a wildcard SSRC */
int (*add_stream)(struct ast_srtp *srtp, struct ast_srtp_policy *policy);
/* Change the source on an existing SRTP session. */
int (*change_source)(struct ast_srtp *srtp, unsigned int from_ssrc, unsigned int to_ssrc);
/* Set a callback function */
void (*set_cb)(struct ast_srtp *srtp, const struct ast_srtp_cb *cb, void *data);
/* Unprotect SRTP data */
int (*unprotect)(struct ast_srtp *srtp, void *buf, int *size, int rtcp);
/* Protect RTP data */
int (*protect)(struct ast_srtp *srtp, void **buf, int *size, int rtcp);
/* Obtain a random cryptographic key */
int (*get_random)(unsigned char *key, size_t len);
};
/* Crypto suites */
enum ast_srtp_suite {
AST_AES_CM_128_HMAC_SHA1_80 = 1,
AST_AES_CM_128_HMAC_SHA1_32 = 2,
AST_F8_128_HMAC_SHA1_80 = 3
};
struct ast_srtp_policy_res {
struct ast_srtp_policy *(*alloc)(void);
void (*destroy)(struct ast_srtp_policy *policy);
int (*set_suite)(struct ast_srtp_policy *policy, enum ast_srtp_suite suite);
int (*set_master_key)(struct ast_srtp_policy *policy, const unsigned char *key, size_t key_len, const unsigned char *salt, size_t salt_len);
void (*set_ssrc)(struct ast_srtp_policy *policy, unsigned long ssrc, int inbound);
};
#endif /* _ASTERISK_RES_SRTP_H */
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