/*
* Secure RTP with libgcrypt
- * Copyright (C) 2007 Rémi Denis-Courmont <rdenis # simphalempin , com>
+ * Copyright (C) 2007 Rémi Denis-Courmont
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
enum
{
- SRTP_UNENCRYPTED=0x1, // do not encrypt SRTP packets
- SRTCP_UNENCRYPTED=0x2, // do not encrypt SRTCP packets
- SRTP_NULL_CIPHER=0x3, // use NULL cipher (encrypt nothing)
- SRTP_UNAUTHENTICATED=0x4, // do not authenticated SRTP packets
- SRTP_FLAGS_MASK=0x7
+ SRTP_UNENCRYPTED=0x1, // do not encrypt SRTP packets
+ SRTCP_UNENCRYPTED=0x2, // do not encrypt SRTCP packets
+ SRTP_UNAUTHENTICATED=0x4, // authenticate only SRTCP packets
+
+ SRTP_RCC_MODE1=0x10, // use Roll-over-Counter Carry mode 1
+ SRTP_RCC_MODE2=0x20, // use Roll-over-Counter Carry mode 2
+ SRTP_RCC_MODE3=0x30, // use Roll-over-Counter Carry mode 3 (insecure)
+
+ SRTP_FLAGS_MASK=0x38
+};
+
+/* SRTP encryption algorithms (ciphers); same values as MIKEY */
+enum
+{
+ SRTP_ENCR_NULL=0,
+ SRTP_ENCR_AES_CM=1,
+ SRTP_ENCR_AES_F8=2 // not implemented
+};
+
+/* SRTP authenticaton algorithms; same values as MIKEY */
+enum
+{
+ SRTP_AUTH_NULL=0,
+ SRTP_AUTH_HMAC_SHA1=1
};
+/* SRTP pseudo random function; same values as MIKEY */
+enum
+{
+ SRTP_PRF_AES_CM=0
+};
# ifdef __cplusplus
extern "C" {
# endif
-srtp_session_t *srtp_create (const char *name, unsigned flags, unsigned kdr,
- uint16_t winsize);
+srtp_session_t *srtp_create (int encr, int auth, unsigned tag_len, int prf,
+ unsigned flags);
void srtp_destroy (srtp_session_t *s);
-int srtp_send (srtp_session_t *s, uint8_t *buf, size_t *lenp, size_t maxsize);
-int srtp_recv (srtp_session_t *s, uint8_t *buf, size_t *lenp);
int srtp_setkey (srtp_session_t *s, const void *key, size_t keylen,
const void *salt, size_t saltlen);
+int srtp_setkeystring (srtp_session_t *s, const char *key, const char *salt);
+
+void srtp_setrcc_rate (srtp_session_t *s, uint16_t rate);
+
+int srtp_send (srtp_session_t *s, uint8_t *buf, size_t *lenp, size_t maxsize);
+int srtp_recv (srtp_session_t *s, uint8_t *buf, size_t *lenp);
+int srtcp_send (srtp_session_t *s, uint8_t *buf, size_t *lenp, size_t maxsiz);
+int srtcp_recv (srtp_session_t *s, uint8_t *buf, size_t *lenp);
+
# ifdef __cplusplus
}
# endif