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1 /* | 1 /* |
2 * Copyright 2014 The WebRTC project authors. All Rights Reserved. | 2 * Copyright 2014 The WebRTC project authors. All Rights Reserved. |
3 * | 3 * |
4 * Use of this source code is governed by a BSD-style license | 4 * Use of this source code is governed by a BSD-style license |
5 * that can be found in the LICENSE file in the root of the source | 5 * that can be found in the LICENSE file in the root of the source |
6 * tree. An additional intellectual property rights grant can be found | 6 * tree. An additional intellectual property rights grant can be found |
7 * in the file PATENTS. All contributing project authors may | 7 * in the file PATENTS. All contributing project authors may |
8 * be found in the AUTHORS file in the root of the source tree. | 8 * be found in the AUTHORS file in the root of the source tree. |
9 */ | 9 */ |
10 | 10 |
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24 // can plug any desired authentication modules into libsrtp. | 24 // can plug any desired authentication modules into libsrtp. |
25 // libsrtp also provides a mechanism to select different auth functions for | 25 // libsrtp also provides a mechanism to select different auth functions for |
26 // individual streams. This can be done by setting the right value in | 26 // individual streams. This can be done by setting the right value in |
27 // the auth_type of srtp_policy_t. The application must first register auth | 27 // the auth_type of srtp_policy_t. The application must first register auth |
28 // functions and the corresponding authentication id using | 28 // functions and the corresponding authentication id using |
29 // crypto_kernel_replace_auth_type function. | 29 // crypto_kernel_replace_auth_type function. |
30 #if defined(HAVE_SRTP) && defined(ENABLE_EXTERNAL_AUTH) | 30 #if defined(HAVE_SRTP) && defined(ENABLE_EXTERNAL_AUTH) |
31 | 31 |
32 #include "webrtc/base/basictypes.h" | 32 #include "webrtc/base/basictypes.h" |
33 extern "C" { | 33 extern "C" { |
34 #ifdef SRTP_RELATIVE_PATH | |
35 #include "auth.h" // NOLINT | |
36 #else | |
37 #include "third_party/libsrtp/srtp/crypto/include/auth.h" | 34 #include "third_party/libsrtp/srtp/crypto/include/auth.h" |
38 #endif // SRTP_RELATIVE_PATH | |
39 } | 35 } |
40 | 36 |
41 #define EXTERNAL_HMAC_SHA1 HMAC_SHA1 + 1 | 37 #define EXTERNAL_HMAC_SHA1 HMAC_SHA1 + 1 |
42 #define HMAC_KEY_LENGTH 20 | 38 #define HMAC_KEY_LENGTH 20 |
43 | 39 |
44 // The HMAC context structure used to store authentication keys. | 40 // The HMAC context structure used to store authentication keys. |
45 // The pointer to the key will be allocated in the external_hmac_init function. | 41 // The pointer to the key will be allocated in the external_hmac_init function. |
46 // This pointer is owned by srtp_t in a template context. | 42 // This pointer is owned by srtp_t in a template context. |
47 typedef struct { | 43 typedef struct { |
48 uint8_t key[HMAC_KEY_LENGTH]; | 44 uint8_t key[HMAC_KEY_LENGTH]; |
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66 err_status_t external_hmac_compute(ExternalHmacContext* state, | 62 err_status_t external_hmac_compute(ExternalHmacContext* state, |
67 const void* message, | 63 const void* message, |
68 int msg_octets, | 64 int msg_octets, |
69 int tag_len, | 65 int tag_len, |
70 uint8_t* result); | 66 uint8_t* result); |
71 | 67 |
72 err_status_t external_crypto_init(); | 68 err_status_t external_crypto_init(); |
73 | 69 |
74 #endif // defined(HAVE_SRTP) && defined(ENABLE_EXTERNAL_AUTH) | 70 #endif // defined(HAVE_SRTP) && defined(ENABLE_EXTERNAL_AUTH) |
75 #endif // TALK_SESSION_MEDIA_EXTERNAL_HMAC_H_ | 71 #endif // TALK_SESSION_MEDIA_EXTERNAL_HMAC_H_ |
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