68 #define SRTP_MASTER_KEY_LEN 30
73 #define SRTP_MAX_KEY_LEN 64
79 #define SRTP_MAX_TAG_LEN 16
85 #define SRTP_MAX_MKI_LEN 128
96 #define SRTP_MAX_TRAILER_LEN SRTP_MAX_TAG_LEN + SRTP_MAX_MKI_LEN
103 #define SRTP_MAX_NUM_MASTER_KEYS 16
110 #define SRTP_AEAD_SALT_LEN 12
111 #define SRTP_AES_128_GCM_KEYSIZE_WSALT SRTP_AEAD_SALT_LEN + 16
112 #define SRTP_AES_192_GCM_KEYSIZE_WSALT SRTP_AEAD_SALT_LEN + 24
113 #define SRTP_AES_256_GCM_KEYSIZE_WSALT SRTP_AEAD_SALT_LEN + 32
124 #ifndef WORDS_BIGENDIAN
137 unsigned char version:2;
148 unsigned char version:2;
162 uint16_t profile_specific;
174 #ifndef WORDS_BIGENDIAN
179 unsigned char version:2;
186 unsigned int index:31;
196 unsigned char version:2;
205 unsigned int version:2;
207 unsigned int count:5;
214 unsigned int index:31;
289 typedef struct srtp_ctx_t_ srtp_ctx_t;
385 unsigned char *mki_id;
386 unsigned int mki_size;
571 int *pkt_octet_len,
unsigned int use_mki,
572 unsigned int mki_index);
660 unsigned int use_mki);
837 #define srtp_crypto_policy_set_aes_cm_128_hmac_sha1_80(p) srtp_crypto_policy_set_rtp_default(p)
1211 srtp_profile_reserved = 0,
1212 srtp_profile_aes128_cm_sha1_80 = 1,
1213 srtp_profile_aes128_cm_sha1_32 = 2,
1214 srtp_profile_aes256_cm_sha1_80 = 3,
1215 srtp_profile_aes256_cm_sha1_32 = 4,
1216 srtp_profile_null_sha1_80 = 5,
1217 srtp_profile_null_sha1_32 = 6,
1297 unsigned char *salt,
unsigned int bytes_in_salt);
1414 unsigned int use_mki,
unsigned int mki_index);
1499 unsigned int use_mki);
1693 uint32_t mki_index, uint32_t *length);
1705 uint32_t mki_index, uint32_t *length);
1712 #define SRTCP_E_BIT 0x80000000
1714 #define SRTCP_E_BYTE_BIT 0x80
1715 #define SRTCP_INDEX_MASK 0x7fffffff
uint32_t ssrc
Definition: srtp.h:1623
void srtp_append_salt_to_key(unsigned char *key, unsigned int bytes_in_key, unsigned char *salt, unsigned int bytes_in_salt)
appends the salt to the key
srtp_t session
Definition: srtp.h:1622
struct srtp_ekt_policy_ctx_t * srtp_ekt_policy_t
points to an EKT policy
Definition: srtp.h:369
srtp_err_status_t srtp_dealloc(srtp_t s)
srtp_dealloc() deallocates storage for an SRTP session context.
srtp_err_status_t srtp_protect_rtcp_mki(srtp_t ctx, void *rtcp_hdr, int *pkt_octet_len, unsigned int use_mki, unsigned int mki_index)
srtp_protect_rtcp_mki() is the Secure RTCP sender-side packet processing function that can utilize mk...
srtp_crypto_policy_t describes a particular crypto policy that can be applied to an SRTP stream...
Definition: srtp.h:316
int cipher_key_len
Definition: srtp.h:319
srtp_err_status_t srtp_shutdown(void)
srtp_shutdown() de-initializes the srtp library.
srtp_ssrc_type_t type
Definition: srtp.h:361
int * enc_xtn_hdr
Definition: srtp.h:438
struct srtp_crypto_policy_t srtp_crypto_policy_t
srtp_crypto_policy_t describes a particular crypto policy that can be applied to an SRTP stream...
srtp_err_status_t srtp_set_debug_module(char *mod_name, int v)
srtp_set_debug_module(mod_name, v)
unsigned int srtp_get_version(void)
Returns the numeric representation of the library version.
void srtp_crypto_policy_set_null_cipher_hmac_null(srtp_crypto_policy_t *p)
srtp_crypto_policy_set_null_cipher_hmac_null() sets a crypto policy structure to use no encryption or...
srtp_crypto_policy_t rtcp
Definition: srtp.h:423
struct srtp_policy_t * next
Definition: srtp.h:440
srtp_event_t event
Definition: srtp.h:1624
void srtp_crypto_policy_set_aes_gcm_128_16_auth(srtp_crypto_policy_t *p)
srtp_crypto_policy_set_aes_gcm_128_16_auth() sets a crypto policy structure to an AEAD encryption pol...
srtp_master_key_t represents a master key. There will be a Master Key Index and the Master Key associ...
Definition: srtp.h:383
uint32_t srtp_cipher_type_id_t
A srtp_cipher_type_id_t is an identifier for a particular cipher type.
Definition: srtp.h:235
srtp_err_status_t srtp_update_stream(srtp_t session, const srtp_policy_t *policy)
srtp_update_stream() udpates a SRTP stream.
void srtp_crypto_policy_set_aes_cm_128_hmac_sha1_32(srtp_crypto_policy_t *p)
srtp_crypto_policy_set_aes_cm_128_hmac_sha1_32() sets a crypto policy structure to a short-authentica...
srtp_err_status_t srtp_list_debug_modules(void)
srtp_list_debug_modules() outputs a list of debugging modules
struct srtp_master_key_t srtp_master_key_t
srtp_master_key_t represents a master key. There will be a Master Key Index and the Master Key associ...
srtp_err_status_t srtp_crypto_policy_set_from_profile_for_rtcp(srtp_crypto_policy_t *policy, srtp_profile_t profile)
srtp_crypto_policy_set_from_profile_for_rtcp() sets a crypto policy structure to the appropriate valu...
void srtp_crypto_policy_set_aes_gcm_128_8_auth(srtp_crypto_policy_t *p)
srtp_crypto_policy_set_aes_gcm_128_8_auth() sets a crypto policy structure to an AEAD encryption poli...
srtp_ekt_policy_t ekt
Definition: srtp.h:428
int auth_tag_len
Definition: srtp.h:325
struct srtp_event_data_t srtp_event_data_t
srtp_event_data_t is the structure passed as a callback to the event handler function ...
srtp_err_status_t srtp_create(srtp_t *session, const srtp_policy_t *policy)
srtp_create() allocates and initializes an SRTP session.
struct srtp_policy_t srtp_policy_t
represents the policy for an SRTP session.
void srtp_crypto_policy_set_null_cipher_hmac_sha1_80(srtp_crypto_policy_t *p)
srtp_crypto_policy_set_null_cipher_hmac_sha1_80() sets a crypto policy structure to an authentication...
unsigned char * key
Definition: srtp.h:424
srtp_event_data_t is the structure passed as a callback to the event handler function ...
Definition: srtp.h:1621
srtp_err_status_t srtp_crypto_policy_set_from_profile_for_rtp(srtp_crypto_policy_t *policy, srtp_profile_t profile)
srtp_crypto_policy_set_from_profile_for_rtp() sets a crypto policy structure to the appropriate value...
void( srtp_event_handler_func_t)(srtp_event_data_t *data)
srtp_event_handler_func_t is the function prototype for the event handler.
Definition: srtp.h:1638
srtp_event_t
srtp_event_t defines events that need to be handled
Definition: srtp.h:1598
srtp_err_status_t srtp_get_protect_rtcp_trailer_length(srtp_t session, uint32_t use_mki, uint32_t mki_index, uint32_t *length)
srtp_get_protect_rtcp_trailer_length(session, use_mki, mki_index, length)
unsigned int srtp_profile_get_master_key_length(srtp_profile_t profile)
returns the master key length for a given SRTP profile
void srtp_crypto_policy_set_aes_cm_128_null_auth(srtp_crypto_policy_t *p)
srtp_crypto_policy_set_aes_cm_128_null_auth() sets a crypto policy structure to an encryption-only po...
srtp_cipher_type_id_t cipher_type
Definition: srtp.h:317
srtp_crypto_policy_t rtp
Definition: srtp.h:422
srtp_err_status_t srtp_unprotect_rtcp_mki(srtp_t ctx, void *srtcp_hdr, int *pkt_octet_len, unsigned int use_mki)
srtp_unprotect_rtcp() is the Secure RTCP receiver-side packet processing function.
srtp_ssrc_type_t
srtp_ssrc_type_t describes the type of an SSRC.
Definition: srtp.h:339
srtp_err_status_t srtp_install_event_handler(srtp_event_handler_func_t func)
sets the event handler to the function supplied by the caller.
unsigned long num_master_keys
Definition: srtp.h:427
uint32_t srtp_auth_type_id_t
An srtp_auth_type_id_t is an identifier for a particular authentication function. ...
Definition: srtp.h:249
srtp_err_status_t srtp_protect_mki(srtp_ctx_t *ctx, void *rtp_hdr, int *pkt_octet_len, unsigned int use_mki, unsigned int mki_index)
srtp_protect_mki() is the Secure RTP sender-side packet processing function that can utilize MKI...
void srtp_crypto_policy_set_aes_gcm_256_16_auth(srtp_crypto_policy_t *p)
srtp_crypto_policy_set_aes_gcm_256_16_auth() sets a crypto policy structure to an AEAD encryption pol...
srtp_err_status_t srtp_protect_rtcp(srtp_t ctx, void *rtcp_hdr, int *pkt_octet_len)
srtp_protect_rtcp() is the Secure RTCP sender-side packet processing function.
srtp_ssrc_t ssrc
Definition: srtp.h:417
void srtp_crypto_policy_set_aes_gcm_256_8_only_auth(srtp_crypto_policy_t *p)
srtp_crypto_policy_set_aes_gcm_256_8_only_auth() sets a crypto policy structure to an AEAD authentica...
int enc_xtn_hdr_count
Definition: srtp.h:439
void srtp_crypto_policy_set_aes_gcm_256_8_auth(srtp_crypto_policy_t *p)
srtp_crypto_policy_set_aes_gcm_256_8_auth() sets a crypto policy structure to an AEAD encryption poli...
srtp_err_status_t srtp_unprotect_mki(srtp_t ctx, void *srtp_hdr, int *len_ptr, unsigned int use_mki)
srtp_unprotect_mki() is the Secure RTP receiver-side packet processing function that checks for MKI...
srtp_err_status_t
Definition: srtp.h:259
srtp_auth_type_id_t auth_type
Definition: srtp.h:321
unsigned int srtp_profile_get_master_salt_length(srtp_profile_t profile)
returns the master salt length for a given SRTP profile
srtp_ctx_t * srtp_t
An srtp_t points to an SRTP session structure.
Definition: srtp.h:459
srtp_err_status_t srtp_unprotect_rtcp(srtp_t ctx, void *srtcp_hdr, int *pkt_octet_len)
srtp_unprotect_rtcp() is the Secure RTCP receiver-side packet processing function.
void * srtp_get_user_data(srtp_t ctx)
srtp_get_user_data() retrieves the pointer to the custom data previously stored with srtp_set_user_da...
void srtp_crypto_policy_set_rtcp_default(srtp_crypto_policy_t *p)
srtp_crypto_policy_set_rtcp_default() sets a crypto policy structure to the SRTP default policy for R...
srtp_sec_serv_t
srtp_sec_serv_t describes a set of security services.
Definition: srtp.h:299
void srtp_crypto_policy_set_aes_gcm_128_8_only_auth(srtp_crypto_policy_t *p)
srtp_crypto_policy_set_aes_gcm_128_8_only_auth() sets a crypto policy structure to an AEAD authentica...
srtp_err_status_t srtp_init(void)
srtp_init() initializes the srtp library.
const char * srtp_get_version_string(void)
Returns the version string of the library.
unsigned int value
Definition: srtp.h:362
struct srtp_ekt_stream_ctx_t * srtp_ekt_stream_t
points to EKT stream data
Definition: srtp.h:375
unsigned long window_size
Definition: srtp.h:430
represents the policy for an SRTP session.
Definition: srtp.h:416
srtp_err_status_t srtp_unprotect(srtp_t ctx, void *srtp_hdr, int *len_ptr)
srtp_unprotect() is the Secure RTP receiver-side packet processing function.
void srtp_crypto_policy_set_aes_cm_256_null_auth(srtp_crypto_policy_t *p)
srtp_crypto_policy_set_aes_cm_256_null_auth() sets a crypto policy structure to an encryption-only po...
srtp_err_status_t srtp_get_protect_trailer_length(srtp_t session, uint32_t use_mki, uint32_t mki_index, uint32_t *length)
srtp_get_protect_trailer_length(session, use_mki, mki_index, length)
int allow_repeat_tx
Definition: srtp.h:432
void srtp_crypto_policy_set_aes_cm_256_hmac_sha1_32(srtp_crypto_policy_t *p)
srtp_crypto_policy_set_aes_cm_256_hmac_sha1_32() sets a crypto policy structure to a short-authentica...
srtp_sec_serv_t sec_serv
Definition: srtp.h:327
srtp_err_status_t srtp_remove_stream(srtp_t session, unsigned int ssrc)
srtp_remove_stream() deallocates an SRTP stream.
void srtp_set_user_data(srtp_t ctx, void *data)
srtp_set_user_data() stores the given pointer into the SRTP session for later retrieval.
void srtp_crypto_policy_set_rtp_default(srtp_crypto_policy_t *p)
srtp_crypto_policy_set_rtp_default() sets a crypto policy structure to the SRTP default policy for RT...
srtp_err_status_t srtp_add_stream(srtp_t session, const srtp_policy_t *policy)
srtp_add_stream() allocates and initializes an SRTP stream within a given SRTP session.
int auth_key_len
Definition: srtp.h:323
void srtp_crypto_policy_set_aes_cm_256_hmac_sha1_80(srtp_crypto_policy_t *p)
srtp_crypto_policy_set_aes_cm_256_hmac_sha1_80() sets a crypto policy structure to a encryption and a...
srtp_err_status_t srtp_protect(srtp_t ctx, void *rtp_hdr, int *len_ptr)
srtp_protect() is the Secure RTP sender-side packet processing function.
srtp_err_status_t srtp_update(srtp_t session, const srtp_policy_t *policy)
srtp_update() udpates all streams in the session.
An srtp_ssrc_t represents a particular SSRC value, or a `wildcard' SSRC.
Definition: srtp.h:360