2 * RTMPE encryption utilities
3 * Copyright (c) 2012 Samuel Pitoiset
5 * This file is part of FFmpeg.
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.
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.
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
22 #ifndef AVFORMAT_RTMPCRYPT_H
23 #define AVFORMAT_RTMPCRYPT_H
30 * Initialize the Diffie-Hellmann context and generate the public key.
32 * @param h an URLContext
33 * @param buf handshake data (1536 bytes)
34 * @return zero on success, negative value otherwise
36 int ff_rtmpe_gen_pub_key(URLContext *h, uint8_t *buf);
39 * Compute the shared secret key and initialize the RC4 encryption.
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
47 int ff_rtmpe_compute_secret_key(URLContext *h, const uint8_t *serverdata,
48 const uint8_t *clientdata, int type);
51 * Encrypt the signature.
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)
58 void ff_rtmpe_encrypt_sig(URLContext *h, uint8_t *signature,
59 const uint8_t *digest, int type);
62 * Update the keystream and set RC4 keys for encryption.
64 * @param h an URLContext
65 * @return zero on success, negative value otherwise
67 int ff_rtmpe_update_keystream(URLContext *h);
69 #endif /* AVFORMAT_RTMPCRYPT_H */