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-rwxr-xr-xthirdparties/android/common/include/srtp/srtp.h357
1 files changed, 179 insertions, 178 deletions
diff --git a/thirdparties/android/common/include/srtp/srtp.h b/thirdparties/android/common/include/srtp/srtp.h
index b4d48d1..1b9ffb2 100755
--- a/thirdparties/android/common/include/srtp/srtp.h
+++ b/thirdparties/android/common/include/srtp/srtp.h
@@ -7,26 +7,26 @@
* Cisco Systems, Inc.
*/
/*
- *
+ *
* Copyright (c) 2001-2006, Cisco Systems, Inc.
* All rights reserved.
- *
+ *
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
- *
+ *
* Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
- *
+ *
* Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials provided
* with the distribution.
- *
+ *
* Neither the name of the Cisco Systems, Inc. nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
- *
+ *
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
@@ -50,7 +50,7 @@
extern "C" {
#endif
-#include "crypto_kernel.h"
+#include "crypto_kernel.h"
/**
* @defgroup SRTP Secure RTP
@@ -76,7 +76,7 @@ extern "C" {
* SRTP_MAX_TAG_LEN is the maximum tag length supported by libSRTP
*/
-#define SRTP_MAX_TAG_LEN 12
+#define SRTP_MAX_TAG_LEN 12
/**
* SRTP_MAX_TRAILER_LEN is the maximum length of the SRTP trailer
@@ -86,85 +86,86 @@ extern "C" {
*
* @brief the maximum number of octets added by srtp_protect().
*/
-#define SRTP_MAX_TRAILER_LEN SRTP_MAX_TAG_LEN
+#define SRTP_MAX_TRAILER_LEN SRTP_MAX_TAG_LEN
-/*
+/*
* nota bene: since libSRTP doesn't support the use of the MKI, the
* SRTP_MAX_TRAILER_LEN value is just the maximum tag length
*/
/**
- * @brief sec_serv_t describes a set of security services.
+ * @brief sec_serv_t describes a set of security services.
*
* A sec_serv_t enumeration is used to describe the particular
* security services that will be applied by a particular crypto
- * policy (or other mechanism).
+ * policy (or other mechanism).
*/
typedef enum {
- sec_serv_none = 0, /**< no services */
- sec_serv_conf = 1, /**< confidentiality */
- sec_serv_auth = 2, /**< authentication */
- sec_serv_conf_and_auth = 3 /**< confidentiality and authentication */
-} sec_serv_t;
+ sec_serv_none = 0, /**< no services */
+ sec_serv_conf = 1, /**< confidentiality */
+ sec_serv_auth = 2, /**< authentication */
+ sec_serv_conf_and_auth = 3 /**< confidentiality and authentication */
+}
+sec_serv_t;
-/**
+/**
* @brief crypto_policy_t describes a particular crypto policy that
* can be applied to an SRTP stream.
*
* A crypto_policy_t describes a particular cryptographic policy that
* can be applied to an SRTP or SRTCP stream. An SRTP session policy
- * consists of a list of these policies, one for each SRTP stream
+ * consists of a list of these policies, one for each SRTP stream
* in the session.
*/
typedef struct crypto_policy_t {
- cipher_type_id_t cipher_type; /**< An integer representing
+ cipher_type_id_t cipher_type; /**< An integer representing
* the type of cipher. */
- int cipher_key_len; /**< The length of the cipher key
+ int cipher_key_len; /**< The length of the cipher key
* in octets. */
- auth_type_id_t auth_type; /**< An integer representing the
+ auth_type_id_t auth_type; /**< An integer representing the
* authentication function. */
- int auth_key_len; /**< The length of the authentication
+ int auth_key_len; /**< The length of the authentication
* function key in octets. */
- int auth_tag_len; /**< The length of the authentication
+ int auth_tag_len; /**< The length of the authentication
* tag in octets. */
- sec_serv_t sec_serv; /**< The flag indicating the security
+ sec_serv_t sec_serv; /**< The flag indicating the security
* services to be applied. */
} crypto_policy_t;
-/**
+/**
* @brief ssrc_type_t describes the type of an SSRC.
- *
+ *
* An ssrc_type_t enumeration is used to indicate a type of SSRC. See
* @ref srtp_policy_t for more informataion.
*/
-typedef enum {
- ssrc_undefined = 0, /**< Indicates an undefined SSRC type. */
- ssrc_specific = 1, /**< Indicates a specific SSRC value */
- ssrc_any_inbound = 2, /**< Indicates any inbound SSRC value
+typedef enum {
+ ssrc_undefined = 0, /**< Indicates an undefined SSRC type. */
+ ssrc_specific = 1, /**< Indicates a specific SSRC value */
+ ssrc_any_inbound = 2, /**< Indicates any inbound SSRC value
(i.e. a value that is used in the
function srtp_unprotect()) */
- ssrc_any_outbound = 3 /**< Indicates any outbound SSRC value
- (i.e. a value that is used in the
+ ssrc_any_outbound = 3 /**< Indicates any outbound SSRC value
+ (i.e. a value that is used in the
function srtp_protect()) */
} ssrc_type_t;
/**
* @brief An ssrc_t represents a particular SSRC value, or a `wildcard' SSRC.
- *
+ *
* An ssrc_t represents a particular SSRC value (if its type is
* ssrc_specific), or a wildcard SSRC value that will match all
* outbound SSRCs (if its type is ssrc_any_outbound) or all inbound
- * SSRCs (if its type is ssrc_any_inbound).
+ * SSRCs (if its type is ssrc_any_inbound).
*
*/
-typedef struct {
- ssrc_type_t type; /**< The type of this particular SSRC */
- unsigned int value; /**< The value of this SSRC, if it is not a wildcard */
+typedef struct {
+ ssrc_type_t type; /**< The type of this particular SSRC */
+ unsigned int value; /**< The value of this SSRC, if it is not a wildcard */
} ssrc_t;
@@ -180,8 +181,8 @@ typedef struct ekt_policy_ctx_t *ekt_policy_t;
typedef struct ekt_stream_ctx_t *ekt_stream_t;
-/**
- * @brief represents the policy for an SRTP session.
+/**
+ * @brief represents the policy for an SRTP session.
*
* A single srtp_policy_t struct represents the policy for a single
* SRTP stream, and a linked list of these elements represents the
@@ -190,7 +191,7 @@ typedef struct ekt_stream_ctx_t *ekt_stream_t;
* master key for that stream, the SSRC describing that stream, or a
* flag indicating a `wildcard' SSRC value, and a `next' field that
* holds a pointer to the next element in the list of policy elements,
- * or NULL if it is the last element.
+ * or NULL if it is the last element.
*
* The wildcard value SSRC_ANY_INBOUND matches any SSRC from an
* inbound stream that for which there is no explicit SSRC entry in
@@ -201,33 +202,33 @@ typedef struct ekt_stream_ctx_t *ekt_stream_t;
* is intentional, and it allows libSRTP to ensure that no security
* lapses result from accidental re-use of SSRC values during key
* sharing.
- *
- *
+ *
+ *
* @warning The final element of the list @b must have its `next' pointer
* set to NULL.
*/
typedef struct srtp_policy_t {
- ssrc_t ssrc; /**< The SSRC value of stream, or the
- * flags SSRC_ANY_INBOUND or
+ ssrc_t ssrc; /**< The SSRC value of stream, or the
+ * flags SSRC_ANY_INBOUND or
* SSRC_ANY_OUTBOUND if key sharing
* is used for this policy element.
*/
- crypto_policy_t rtp; /**< SRTP crypto policy. */
- crypto_policy_t rtcp; /**< SRTCP crypto policy. */
- unsigned char *key; /**< Pointer to the SRTP master key for
+ crypto_policy_t rtp; /**< SRTP crypto policy. */
+ crypto_policy_t rtcp; /**< SRTCP crypto policy. */
+ unsigned char *key; /**< Pointer to the SRTP master key for
* this stream. */
- ekt_policy_t ekt; /**< Pointer to the EKT policy structure
- * for this stream (if any) */
- unsigned long window_size; /**< The window size to use for replay
+ ekt_policy_t ekt; /**< Pointer to the EKT policy structure
+ * for this stream (if any) */
+ unsigned long window_size; /**< The window size to use for replay
* protection. */
- int allow_repeat_tx; /**< Whether retransmissions of
+ int allow_repeat_tx; /**< Whether retransmissions of
* packets with the same sequence number
* are allowed. (Note that such repeated
* transmissions must have the same RTP
* payload, or a severe security weakness
* is introduced!) */
- struct srtp_policy_t *next; /**< Pointer to next stream policy. */
+ struct srtp_policy_t *next; /**< Pointer to next stream policy. */
} srtp_policy_t;
@@ -237,7 +238,7 @@ typedef struct srtp_policy_t {
* @brief An srtp_t points to an SRTP session structure.
*
* The typedef srtp_t is a pointer to a structure that represents
- * an SRTP session. This datatype is intentially opaque in
+ * an SRTP session. This datatype is intentially opaque in
* order to separate the interface from the implementation.
*
* An SRTP session consists of all of the traffic sent to the RTP and
@@ -254,11 +255,11 @@ typedef struct srtp_ctx_t *srtp_t;
*
* The typedef srtp_stream_t is a pointer to a structure that
* represents an SRTP stream. This datatype is intentionally
- * opaque in order to separate the interface from the implementation.
- *
+ * opaque in order to separate the interface from the implementation.
+ *
* An SRTP stream consists of all of the traffic sent to an SRTP
* session by a single participant. A session can be viewed as
- * a set of streams.
+ * a set of streams.
*
*/
typedef struct srtp_stream_ctx_t *srtp_stream_t;
@@ -266,7 +267,7 @@ typedef struct srtp_stream_ctx_t *srtp_stream_t;
/**
- * @brief srtp_init() initializes the srtp library.
+ * @brief srtp_init() initializes the srtp library.
*
* @warning This function @b must be called before any other srtp
* functions.
@@ -287,14 +288,14 @@ srtp_shutdown(void);
/**
* @brief srtp_protect() is the Secure RTP sender-side packet processing
* function.
- *
+ *
* The function call srtp_protect(ctx, rtp_hdr, len_ptr) applies SRTP
* protection to the RTP packet rtp_hdr (which has length *len_ptr) using
* the SRTP context ctx. If err_status_ok is returned, then rtp_hdr
* points to the resulting SRTP packet and *len_ptr is the number of
* octets in that packet; otherwise, no assumptions should be made
* about the value of either data elements.
- *
+ *
* The sequence numbers of the RTP packets presented to this function
* need not be consecutive, but they @b must be out of order by less
* than 2^15 = 32,768 packets.
@@ -304,11 +305,11 @@ srtp_shutdown(void);
* packet, and assumes that the RTP packet is aligned on a 32-bit
* boundary.
*
- * @warning This function assumes that it can write SRTP_MAX_TRAILER_LEN
- * into the location in memory immediately following the RTP packet.
- * Callers MUST ensure that this much writable memory is available in
+ * @warning This function assumes that it can write SRTP_MAX_TRAILER_LEN
+ * into the location in memory immediately following the RTP packet.
+ * Callers MUST ensure that this much writable memory is available in
* the buffer that holds the RTP packet.
- *
+ *
* @param ctx is the SRTP context to use in processing the packet.
*
* @param rtp_hdr is a pointer to the RTP packet (before the call); after
@@ -319,7 +320,7 @@ srtp_shutdown(void);
* complete SRTP packet after the call, if err_status_ok was returned.
* Otherwise, the value of the data to which it points is undefined.
*
- * @return
+ * @return
* - err_status_ok no problems
* - err_status_replay_fail rtp sequence number was non-increasing
* - @e other failure in cryptographic mechanisms
@@ -327,7 +328,7 @@ srtp_shutdown(void);
err_status_t
srtp_protect(srtp_t ctx, void *rtp_hdr, int *len_ptr);
-
+
/**
* @brief srtp_unprotect() is the Secure RTP receiver-side packet
* processing function.
@@ -338,12 +339,12 @@ srtp_protect(srtp_t ctx, void *rtp_hdr, int *len_ptr);
* err_status_ok is returned, then srtp_hdr points to the resulting
* RTP packet and *len_ptr is the number of octets in that packet;
* otherwise, no assumptions should be made about the value of either
- * data elements.
- *
+ * data elements.
+ *
* The sequence numbers of the RTP packets presented to this function
* need not be consecutive, but they @b must be out of order by less
* than 2^15 = 32,768 packets.
- *
+ *
* @warning This function assumes that the SRTP packet is aligned on a
* 32-bit boundary.
*
@@ -360,9 +361,9 @@ srtp_protect(srtp_t ctx, void *rtp_hdr, int *len_ptr);
* complete rtp packet after the call, if err_status_ok was returned.
* Otherwise, the value of the data to which it points is undefined.
*
- * @return
+ * @return
* - err_status_ok if the RTP packet is valid.
- * - err_status_auth_fail if the SRTP packet failed the message
+ * - err_status_auth_fail if the SRTP packet failed the message
* authentication check.
* - err_status_replay_fail if the SRTP packet is a replay (e.g. packet has
* already been processed and accepted).
@@ -382,14 +383,14 @@ srtp_unprotect(srtp_t ctx, void *srtp_hdr, int *len_ptr);
* key.
*
* @param session is the SRTP session to which the policy is to be added.
- *
+ *
* @param policy is the srtp_policy_t struct that describes the policy
* for the session. The struct may be a single element, or it may be
* the head of a list, in which case each element of the list is
* processed. It may also be NULL, in which case streams should be added
* later using srtp_add_stream(). The final element of the list @b must
* have its `next' field set to NULL.
- *
+ *
* @return
* - err_status_ok if creation succeded.
* - err_status_alloc_fail if allocation failed.
@@ -403,7 +404,7 @@ srtp_create(srtp_t *session, const srtp_policy_t *policy);
/**
* @brief srtp_add_stream() allocates and initializes an SRTP stream
* within a given SRTP session.
- *
+ *
* The function call srtp_add_stream(session, policy) allocates and
* initializes a new SRTP stream within a given, previously created
* session, applying the policy given as the other argument to that
@@ -416,13 +417,13 @@ srtp_create(srtp_t *session, const srtp_policy_t *policy);
*/
err_status_t
-srtp_add_stream(srtp_t session,
- const srtp_policy_t *policy);
+srtp_add_stream(srtp_t session,
+ const srtp_policy_t *policy);
/**
* @brief srtp_remove_stream() deallocates an SRTP stream.
- *
+ *
* The function call srtp_remove_stream(session, ssrc) removes
* the SRTP stream with the SSRC value ssrc from the SRTP session
* context given by the argument session.
@@ -434,7 +435,7 @@ srtp_add_stream(srtp_t session,
*
* @warning Wildcard SSRC values cannot be removed from a
* session.
- *
+ *
* @return
* - err_status_ok if the stream deallocation succeded.
* - [other] otherwise.
@@ -448,8 +449,8 @@ srtp_remove_stream(srtp_t session, unsigned int ssrc);
* @brief crypto_policy_set_rtp_default() sets a crypto policy
* structure to the SRTP default policy for RTP protection.
*
- * @param p is a pointer to the policy structure to be set
- *
+ * @param p is a pointer to the policy structure to be set
+ *
* The function call crypto_policy_set_rtp_default(&p) sets the
* crypto_policy_t at location p to the SRTP default policy for RTP
* protection, as defined in the specification. This function is a
@@ -458,9 +459,9 @@ srtp_remove_stream(srtp_t session, unsigned int ssrc);
* with this function call. Doing so may allow your code to be
* forward compatible with later versions of libSRTP that include more
* elements in the crypto_policy_t datatype.
- *
+ *
* @return void.
- *
+ *
*/
void
@@ -470,8 +471,8 @@ crypto_policy_set_rtp_default(crypto_policy_t *p);
* @brief crypto_policy_set_rtcp_default() sets a crypto policy
* structure to the SRTP default policy for RTCP protection.
*
- * @param p is a pointer to the policy structure to be set
- *
+ * @param p is a pointer to the policy structure to be set
+ *
* The function call crypto_policy_set_rtcp_default(&p) sets the
* crypto_policy_t at location p to the SRTP default policy for RTCP
* protection, as defined in the specification. This function is a
@@ -480,9 +481,9 @@ crypto_policy_set_rtp_default(crypto_policy_t *p);
* with this function call. Doing so may allow your code to be
* forward compatible with later versions of libSRTP that include more
* elements in the crypto_policy_t datatype.
- *
+ *
* @return void.
- *
+ *
*/
void
@@ -492,15 +493,15 @@ crypto_policy_set_rtcp_default(crypto_policy_t *p);
* @brief crypto_policy_set_aes_cm_128_hmac_sha1_80() sets a crypto
* policy structure to the SRTP default policy for RTP protection.
*
- * @param p is a pointer to the policy structure to be set
- *
+ * @param p is a pointer to the policy structure to be set
+ *
* The function crypto_policy_set_aes_cm_128_hmac_sha1_80() is a
* synonym for crypto_policy_set_rtp_default(). It conforms to the
* naming convention used in RFC 4568 (SDP Security Descriptions for
* Media Streams).
- *
+ *
* @return void.
- *
+ *
*/
#define crypto_policy_set_aes_cm_128_hmac_sha1_80(p) crypto_policy_set_rtp_default(p)
@@ -510,8 +511,8 @@ crypto_policy_set_rtcp_default(crypto_policy_t *p);
* @brief crypto_policy_set_aes_cm_128_hmac_sha1_32() sets a crypto
* policy structure to a short-authentication tag policy
*
- * @param p is a pointer to the policy structure to be set
- *
+ * @param p is a pointer to the policy structure to be set
+ *
* The function call crypto_policy_set_aes_cm_128_hmac_sha1_32(&p)
* sets the crypto_policy_t at location p to use policy
* AES_CM_128_HMAC_SHA1_32 as defined in RFC 4568.
@@ -521,7 +522,7 @@ crypto_policy_set_rtcp_default(crypto_policy_t *p);
* considered adequate only for protecting audio and video media that
* use a stateless playback function. See Section 7.5 of RFC 3711
* (http://www.ietf.org/rfc/rfc3711.txt).
- *
+ *
* This function is a convenience that helps to avoid dealing directly
* with the policy data structure. You are encouraged to initialize
* policy elements with this function call. Doing so may allow your
@@ -534,7 +535,7 @@ crypto_policy_set_rtcp_default(crypto_policy_t *p);
* (http://www.ietf.org/rfc/rfc3711.txt).
*
* @return void.
- *
+ *
*/
void
@@ -546,14 +547,14 @@ crypto_policy_set_aes_cm_128_hmac_sha1_32(crypto_policy_t *p);
* @brief crypto_policy_set_aes_cm_128_null_auth() sets a crypto
* policy structure to an encryption-only policy
*
- * @param p is a pointer to the policy structure to be set
- *
+ * @param p is a pointer to the policy structure to be set
+ *
* The function call crypto_policy_set_aes_cm_128_null_auth(&p) sets
* the crypto_policy_t at location p to use the SRTP default cipher
* (AES-128 Counter Mode), but to use no authentication method. This
* policy is NOT RECOMMENDED unless it is unavoidable; see Section 7.5
* of RFC 3711 (http://www.ietf.org/rfc/rfc3711.txt).
- *
+ *
* This function is a convenience that helps to avoid dealing directly
* with the policy data structure. You are encouraged to initialize
* policy elements with this function call. Doing so may allow your
@@ -565,7 +566,7 @@ crypto_policy_set_aes_cm_128_hmac_sha1_32(crypto_policy_t *p);
* Section 7.5 of RFC 3711 (http://www.ietf.org/rfc/rfc3711.txt).
*
* @return void.
- *
+ *
*/
void
@@ -576,14 +577,14 @@ crypto_policy_set_aes_cm_128_null_auth(crypto_policy_t *p);
* @brief crypto_policy_set_null_cipher_hmac_sha1_80() sets a crypto
* policy structure to an authentication-only policy
*
- * @param p is a pointer to the policy structure to be set
- *
+ * @param p is a pointer to the policy structure to be set
+ *
* The function call crypto_policy_set_null_cipher_hmac_sha1_80(&p)
* sets the crypto_policy_t at location p to use HMAC-SHA1 with an 80
* bit authentication tag to provide message authentication, but to
* use no encryption. This policy is NOT RECOMMENDED for SRTP unless
- * there is a requirement to forego encryption.
- *
+ * there is a requirement to forego encryption.
+ *
* This function is a convenience that helps to avoid dealing directly
* with the policy data structure. You are encouraged to initialize
* policy elements with this function call. Doing so may allow your
@@ -591,10 +592,10 @@ crypto_policy_set_aes_cm_128_null_auth(crypto_policy_t *p);
* include more elements in the crypto_policy_t datatype.
*
* @warning This policy is NOT RECOMMENDED for SRTP unless there is a
- * requirement to forego encryption.
+ * requirement to forego encryption.
*
* @return void.
- *
+ *
*/
void
@@ -603,18 +604,18 @@ crypto_policy_set_null_cipher_hmac_sha1_80(crypto_policy_t *p);
/**
* @brief crypto_policy_set_aes_cm_256_hmac_sha1_80() sets a crypto
- * policy structure to a encryption and authentication policy using AES-256
+ * policy structure to a encryption and authentication policy using AES-256
* for RTP protection.
*
- * @param p is a pointer to the policy structure to be set
- *
+ * @param p is a pointer to the policy structure to be set
+ *
* The function call crypto_policy_set_aes_cm_256_hmac_sha1_80(&p)
* sets the crypto_policy_t at location p to use policy
* AES_CM_256_HMAC_SHA1_80 as defined in
* draft-ietf-avt-srtp-big-aes-03.txt. This policy uses AES-256
* Counter Mode encryption and HMAC-SHA1 authentication, with an 80 bit
* authentication tag.
- *
+ *
* This function is a convenience that helps to avoid dealing directly
* with the policy data structure. You are encouraged to initialize
* policy elements with this function call. Doing so may allow your
@@ -622,7 +623,7 @@ crypto_policy_set_null_cipher_hmac_sha1_80(crypto_policy_t *p);
* include more elements in the crypto_policy_t datatype.
*
* @return void.
- *
+ *
*/
void crypto_policy_set_aes_cm_256_hmac_sha1_80(crypto_policy_t *p);
@@ -633,8 +634,8 @@ void crypto_policy_set_aes_cm_256_hmac_sha1_80(crypto_policy_t *p);
* policy structure to a short-authentication tag policy using AES-256
* encryption.
*
- * @param p is a pointer to the policy structure to be set
- *
+ * @param p is a pointer to the policy structure to be set
+ *
* The function call crypto_policy_set_aes_cm_256_hmac_sha1_32(&p)
* sets the crypto_policy_t at location p to use policy
* AES_CM_256_HMAC_SHA1_32 as defined in
@@ -644,7 +645,7 @@ void crypto_policy_set_aes_cm_256_hmac_sha1_80(crypto_policy_t *p);
* considered adequate only for protecting audio and video media that
* use a stateless playback function. See Section 7.5 of RFC 3711
* (http://www.ietf.org/rfc/rfc3711.txt).
- *
+ *
* This function is a convenience that helps to avoid dealing directly
* with the policy data structure. You are encouraged to initialize
* policy elements with this function call. Doing so may allow your
@@ -657,7 +658,7 @@ void crypto_policy_set_aes_cm_256_hmac_sha1_80(crypto_policy_t *p);
* (http://www.ietf.org/rfc/rfc3711.txt).
*
* @return void.
- *
+ *
*/
void
@@ -667,7 +668,7 @@ crypto_policy_set_aes_cm_256_hmac_sha1_32(crypto_policy_t *p);
/**
* @brief srtp_dealloc() deallocates storage for an SRTP session
* context.
- *
+ *
* The function call srtp_dealloc(s) deallocates storage for the
* SRTP session context s. This function should be called no more
* than one time for each of the contexts allocated by the function
@@ -685,7 +686,7 @@ srtp_dealloc(srtp_t s);
/*
- * @brief identifies a particular SRTP profile
+ * @brief identifies a particular SRTP profile
*
* An srtp_profile_t enumeration is used to identify a particular SRTP
* profile (that is, a set of algorithms and parameters). These
@@ -693,13 +694,13 @@ srtp_dealloc(srtp_t s);
*/
typedef enum {
- srtp_profile_reserved = 0,
- srtp_profile_aes128_cm_sha1_80 = 1,
- srtp_profile_aes128_cm_sha1_32 = 2,
- srtp_profile_aes256_cm_sha1_80 = 3,
- srtp_profile_aes256_cm_sha1_32 = 4,
- srtp_profile_null_sha1_80 = 5,
- srtp_profile_null_sha1_32 = 6,
+ srtp_profile_reserved = 0,
+ srtp_profile_aes128_cm_sha1_80 = 1,
+ srtp_profile_aes128_cm_sha1_32 = 2,
+ srtp_profile_aes256_cm_sha1_80 = 3,
+ srtp_profile_aes256_cm_sha1_32 = 4,
+ srtp_profile_null_sha1_80 = 5,
+ srtp_profile_null_sha1_32 = 6,
} srtp_profile_t;
@@ -707,26 +708,26 @@ typedef enum {
* @brief crypto_policy_set_from_profile_for_rtp() sets a crypto policy
* structure to the appropriate value for RTP based on an srtp_profile_t
*
- * @param p is a pointer to the policy structure to be set
- *
+ * @param p is a pointer to the policy structure to be set
+ *
* The function call crypto_policy_set_rtp_default(&policy, profile)
* sets the crypto_policy_t at location policy to the policy for RTP
* protection, as defined by the srtp_profile_t profile.
- *
+ *
* This function is a convenience that helps to avoid dealing directly
* with the policy data structure. You are encouraged to initialize
* policy elements with this function call. Doing so may allow your
* code to be forward compatible with later versions of libSRTP that
* include more elements in the crypto_policy_t datatype.
- *
+ *
* @return values
* - err_status_ok no problems were encountered
- * - err_status_bad_param the profile is not supported
- *
+ * - err_status_bad_param the profile is not supported
+ *
*/
err_status_t
-crypto_policy_set_from_profile_for_rtp(crypto_policy_t *policy,
- srtp_profile_t profile);
+crypto_policy_set_from_profile_for_rtp(crypto_policy_t *policy,
+ srtp_profile_t profile);
@@ -735,26 +736,26 @@ crypto_policy_set_from_profile_for_rtp(crypto_policy_t *policy,
* @brief crypto_policy_set_from_profile_for_rtcp() sets a crypto policy
* structure to the appropriate value for RTCP based on an srtp_profile_t
*
- * @param p is a pointer to the policy structure to be set
- *
+ * @param p is a pointer to the policy structure to be set
+ *
* The function call crypto_policy_set_rtcp_default(&policy, profile)
* sets the crypto_policy_t at location policy to the policy for RTCP
* protection, as defined by the srtp_profile_t profile.
- *
+ *
* This function is a convenience that helps to avoid dealing directly
* with the policy data structure. You are encouraged to initialize
* policy elements with this function call. Doing so may allow your
* code to be forward compatible with later versions of libSRTP that
* include more elements in the crypto_policy_t datatype.
- *
+ *
* @return values
* - err_status_ok no problems were encountered
- * - err_status_bad_param the profile is not supported
- *
+ * - err_status_bad_param the profile is not supported
+ *
*/
err_status_t
-crypto_policy_set_from_profile_for_rtcp(crypto_policy_t *policy,
- srtp_profile_t profile);
+crypto_policy_set_from_profile_for_rtcp(crypto_policy_t *policy,
+ srtp_profile_t profile);
/**
* @brief returns the master key length for a given SRTP profile
@@ -772,18 +773,18 @@ srtp_profile_get_master_salt_length(srtp_profile_t profile);
/**
* @brief appends the salt to the key
*
- * The function call append_salt_to_key(k, klen, s, slen)
+ * The function call append_salt_to_key(k, klen, s, slen)
* copies the string s to the location at klen bytes following
- * the location k.
+ * the location k.
*
* @warning There must be at least bytes_in_salt + bytes_in_key bytes
* available at the location pointed to by key.
- *
+ *
*/
void
append_salt_to_key(unsigned char *key, unsigned int bytes_in_key,
- unsigned char *salt, unsigned int bytes_in_salt);
+ unsigned char *salt, unsigned int bytes_in_salt);
@@ -795,7 +796,7 @@ append_salt_to_key(unsigned char *key, unsigned int bytes_in_key,
/**
* @defgroup SRTCP Secure RTCP
- * @ingroup SRTP
+ * @ingroup SRTP
*
* @brief Secure RTCP functions are used to protect RTCP traffic.
*
@@ -803,36 +804,36 @@ append_salt_to_key(unsigned char *key, unsigned int bytes_in_key,
* traffic in much the same way as it does RTP traffic. The function
* srtp_protect_rtcp() applies cryptographic protections to outbound
* RTCP packets, and srtp_unprotect_rtcp() verifies the protections on
- * inbound RTCP packets.
+ * inbound RTCP packets.
*
* A note on the naming convention: srtp_protect_rtcp() has an srtp_t
* as its first argument, and thus has `srtp_' as its prefix. The
- * trailing `_rtcp' indicates the protocol on which it acts.
- *
+ * trailing `_rtcp' indicates the protocol on which it acts.
+ *
* @{
*/
/**
* @brief srtp_protect_rtcp() is the Secure RTCP sender-side packet
* processing function.
- *
+ *
* The function call srtp_protect_rtcp(ctx, rtp_hdr, len_ptr) applies
* SRTCP protection to the RTCP packet rtcp_hdr (which has length
* *len_ptr) using the SRTP session context ctx. If err_status_ok is
* returned, then rtp_hdr points to the resulting SRTCP packet and
* *len_ptr is the number of octets in that packet; otherwise, no
* assumptions should be made about the value of either data elements.
- *
+ *
* @warning This function assumes that it can write the authentication
* tag into the location in memory immediately following the RTCP
* packet, and assumes that the RTCP packet is aligned on a 32-bit
* boundary.
*
- * @warning This function assumes that it can write SRTP_MAX_TRAILER_LEN+4
- * into the location in memory immediately following the RTCP packet.
- * Callers MUST ensure that this much writable memory is available in
+ * @warning This function assumes that it can write SRTP_MAX_TRAILER_LEN+4
+ * into the location in memory immediately following the RTCP packet.
+ * Callers MUST ensure that this much writable memory is available in
* the buffer that holds the RTCP packet.
- *
+ *
* @param ctx is the SRTP context to use in processing the packet.
*
* @param rtcp_hdr is a pointer to the RTCP packet (before the call); after
@@ -844,14 +845,14 @@ append_salt_to_key(unsigned char *key, unsigned int bytes_in_key,
* was returned. Otherwise, the value of the data to which it points
* is undefined.
*
- * @return
+ * @return
* - err_status_ok if there were no problems.
- * - [other] if there was a failure in
+ * - [other] if there was a failure in
* the cryptographic mechanisms.
*/
-
-err_status_t
+
+err_status_t
srtp_protect_rtcp(srtp_t ctx, void *rtcp_hdr, int *pkt_octet_len);
/**
@@ -865,7 +866,7 @@ srtp_protect_rtcp(srtp_t ctx, void *rtcp_hdr, int *pkt_octet_len);
* to the resulting RTCP packet and *len_ptr is the number of octets
* in that packet; otherwise, no assumptions should be made about the
* value of either data elements.
- *
+ *
* @warning This function assumes that the SRTCP packet is aligned on a
* 32-bit boundary.
*
@@ -883,9 +884,9 @@ srtp_protect_rtcp(srtp_t ctx, void *rtcp_hdr, int *pkt_octet_len);
* returned. Otherwise, the value of the data to which it points is
* undefined.
*
- * @return
+ * @return
* - err_status_ok if the RTCP packet is valid.
- * - err_status_auth_fail if the SRTCP packet failed the message
+ * - err_status_auth_fail if the SRTCP packet failed the message
* authentication check.
* - err_status_replay_fail if the SRTCP packet is a replay (e.g. has
* already been processed and accepted).
@@ -893,7 +894,7 @@ srtp_protect_rtcp(srtp_t ctx, void *rtcp_hdr, int *pkt_octet_len);
*
*/
-err_status_t
+err_status_t
srtp_unprotect_rtcp(srtp_t ctx, void *srtcp_hdr, int *pkt_octet_len);
/**
@@ -904,10 +905,10 @@ srtp_unprotect_rtcp(srtp_t ctx, void *srtcp_hdr, int *pkt_octet_len);
* @defgroup SRTPevents SRTP events and callbacks
* @ingroup SRTP
*
- * @brief libSRTP can use a user-provided callback function to
+ * @brief libSRTP can use a user-provided callback function to
* handle events.
*
- *
+ *
* libSRTP allows a user to provide a callback function to handle
* events that need to be dealt with outside of the data plane (see
* the enum srtp_event_t for a description of these events). Dealing
@@ -928,8 +929,8 @@ srtp_unprotect_rtcp(srtp_t ctx, void *srtcp_hdr, int *pkt_octet_len);
* @brief srtp_event_t defines events that need to be handled
*
* The enum srtp_event_t defines events that need to be handled
- * outside the `data plane', such as SSRC collisions and
- * key expirations.
+ * outside the `data plane', such as SSRC collisions and
+ * key expirations.
*
* When a key expires or the maximum number of packets has been
* reached, an SRTP stream will enter an `expired' state in which no
@@ -942,33 +943,33 @@ srtp_unprotect_rtcp(srtp_t ctx, void *srtcp_hdr, int *pkt_octet_len);
* latter case, all of the streams in the session will expire.
*/
-typedef enum {
- event_ssrc_collision, /**<
- * An SSRC collision occured.
+typedef enum {
+ event_ssrc_collision, /**<
+ * An SSRC collision occured.
*/
- event_key_soft_limit, /**< An SRTP stream reached the soft key
- * usage limit and will expire soon.
+ event_key_soft_limit, /**< An SRTP stream reached the soft key
+ * usage limit and will expire soon.
*/
- event_key_hard_limit, /**< An SRTP stream reached the hard
+ event_key_hard_limit, /**< An SRTP stream reached the hard
* key usage limit and has expired.
*/
- event_packet_index_limit /**< An SRTP stream reached the hard
- * packet limit (2^48 packets).
+ event_packet_index_limit /**< An SRTP stream reached the hard
+ * packet limit (2^48 packets).
*/
} srtp_event_t;
/**
- * @brief srtp_event_data_t is the structure passed as a callback to
+ * @brief srtp_event_data_t is the structure passed as a callback to
* the event handler function
*
* The struct srtp_event_data_t holds the data passed to the event
- * handler function.
+ * handler function.
*/
typedef struct srtp_event_data_t {
- srtp_t session; /**< The session in which the event happend. */
- srtp_stream_t stream; /**< The stream in which the event happend. */
- srtp_event_t event; /**< An enum indicating the type of event. */
+ srtp_t session; /**< The session in which the event happend. */
+ srtp_stream_t stream; /**< The stream in which the event happend. */
+ srtp_event_t event; /**< An enum indicating the type of event. */
} srtp_event_data_t;
/**
@@ -986,7 +987,7 @@ typedef void (srtp_event_handler_func_t)(srtp_event_data_t *data);
/**
* @brief sets the event handler to the function supplied by the caller.
- *
+ *
* The function call srtp_install_event_handler(func) sets the event
* handler function to the value func. The value NULL is acceptable
* as an argument; in this case, events will be ignored rather than
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