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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 17:32:43 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 17:32:43 +0000 |
commit | 6bf0a5cb5034a7e684dcc3500e841785237ce2dd (patch) | |
tree | a68f146d7fa01f0134297619fbe7e33db084e0aa /third_party/libwebrtc/pc/external_hmac.h | |
parent | Initial commit. (diff) | |
download | thunderbird-6bf0a5cb5034a7e684dcc3500e841785237ce2dd.tar.xz thunderbird-6bf0a5cb5034a7e684dcc3500e841785237ce2dd.zip |
Adding upstream version 1:115.7.0.upstream/1%115.7.0upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'third_party/libwebrtc/pc/external_hmac.h')
-rw-r--r-- | third_party/libwebrtc/pc/external_hmac.h | 72 |
1 files changed, 72 insertions, 0 deletions
diff --git a/third_party/libwebrtc/pc/external_hmac.h b/third_party/libwebrtc/pc/external_hmac.h new file mode 100644 index 0000000000..c5071fc192 --- /dev/null +++ b/third_party/libwebrtc/pc/external_hmac.h @@ -0,0 +1,72 @@ +/* + * Copyright 2014 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + +#ifndef PC_EXTERNAL_HMAC_H_ +#define PC_EXTERNAL_HMAC_H_ + +// External libsrtp HMAC auth module which implements methods defined in +// auth_type_t. +// The default auth module will be replaced only when the ENABLE_EXTERNAL_AUTH +// flag is enabled. This allows us to access to authentication keys, +// as the default auth implementation doesn't provide access and avoids +// hashing each packet twice. + +// How will libsrtp select this module? +// Libsrtp defines authentication function types identified by an unsigned +// integer, e.g. SRTP_HMAC_SHA1 is 3. Using authentication ids, the +// application can plug any desired authentication modules into libsrtp. +// libsrtp also provides a mechanism to select different auth functions for +// individual streams. This can be done by setting the right value in +// the auth_type of srtp_policy_t. The application must first register auth +// functions and the corresponding authentication id using +// crypto_kernel_replace_auth_type function. + +#include <stdint.h> + +#include "third_party/libsrtp/crypto/include/crypto_types.h" +#include "third_party/libsrtp/include/srtp.h" +#include "third_party/libsrtp/include/srtp_priv.h" + +#define EXTERNAL_HMAC_SHA1 SRTP_HMAC_SHA1 + 1 +#define HMAC_KEY_LENGTH 20 + +// The HMAC context structure used to store authentication keys. +// The pointer to the key will be allocated in the external_hmac_init function. +// This pointer is owned by srtp_t in a template context. +typedef struct { + uint8_t key[HMAC_KEY_LENGTH]; + int key_length; +} ExternalHmacContext; + +srtp_err_status_t external_hmac_alloc(srtp_auth_t** a, + int key_len, + int out_len); + +srtp_err_status_t external_hmac_dealloc(srtp_auth_t* a); + +srtp_err_status_t external_hmac_init(void* state, + const uint8_t* key, + int key_len); + +srtp_err_status_t external_hmac_start(void* state); + +srtp_err_status_t external_hmac_update(void* state, + const uint8_t* message, + int msg_octets); + +srtp_err_status_t external_hmac_compute(void* state, + const uint8_t* message, + int msg_octets, + int tag_len, + uint8_t* result); + +srtp_err_status_t external_crypto_init(); + +#endif // PC_EXTERNAL_HMAC_H_ |