Commit | Line | Data |
---|---|---|
2ba45a60 DM |
1 | /* |
2 | * RTMPE encryption utilities | |
3 | * Copyright (c) 2012 Samuel Pitoiset | |
4 | * | |
5 | * This file is part of FFmpeg. | |
6 | * | |
7 | * FFmpeg is free software; you can redistribute it and/or | |
8 | * modify it under the terms of the GNU Lesser General Public | |
9 | * License as published by the Free Software Foundation; either | |
10 | * version 2.1 of the License, or (at your option) any later version. | |
11 | * | |
12 | * FFmpeg is distributed in the hope that it will be useful, | |
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
15 | * Lesser General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU Lesser General Public | |
18 | * License along with FFmpeg; if not, write to the Free Software | |
19 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | |
20 | */ | |
21 | ||
22 | #ifndef AVFORMAT_RTMPCRYPT_H | |
23 | #define AVFORMAT_RTMPCRYPT_H | |
24 | ||
25 | #include <stdint.h> | |
26 | ||
27 | #include "url.h" | |
28 | ||
29 | /** | |
30 | * Initialize the Diffie-Hellmann context and generate the public key. | |
31 | * | |
32 | * @param h an URLContext | |
33 | * @param buf handshake data (1536 bytes) | |
34 | * @return zero on success, negative value otherwise | |
35 | */ | |
36 | int ff_rtmpe_gen_pub_key(URLContext *h, uint8_t *buf); | |
37 | ||
38 | /** | |
39 | * Compute the shared secret key and initialize the RC4 encryption. | |
40 | * | |
41 | * @param h an URLContext | |
42 | * @param serverdata server data (1536 bytes) | |
43 | * @param clientdata client data (1536 bytes) | |
44 | * @param type the position of the server digest | |
45 | * @return zero on success, negative value otherwise | |
46 | */ | |
47 | int ff_rtmpe_compute_secret_key(URLContext *h, const uint8_t *serverdata, | |
48 | const uint8_t *clientdata, int type); | |
49 | ||
50 | /** | |
51 | * Encrypt the signature. | |
52 | * | |
53 | * @param h an URLContext | |
54 | * @param signature the signature to encrypt | |
55 | * @param digest the digest used for finding the encryption key | |
56 | * @param type type of encryption (8 for XTEA, 9 for Blowfish) | |
57 | */ | |
58 | void ff_rtmpe_encrypt_sig(URLContext *h, uint8_t *signature, | |
59 | const uint8_t *digest, int type); | |
60 | ||
61 | /** | |
62 | * Update the keystream and set RC4 keys for encryption. | |
63 | * | |
64 | * @param h an URLContext | |
65 | * @return zero on success, negative value otherwise | |
66 | */ | |
67 | int ff_rtmpe_update_keystream(URLContext *h); | |
68 | ||
69 | #endif /* AVFORMAT_RTMPCRYPT_H */ |