/* * RTMPE encryption utilities * Copyright (c) 2012 Samuel Pitoiset * * This file is part of FFmpeg. * * FFmpeg is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * FFmpeg is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with FFmpeg; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #ifndef AVFORMAT_RTMPCRYPT_H #define AVFORMAT_RTMPCRYPT_H #include <stdint.h> #include "url.h" /** * Initialize the Diffie-Hellmann context and generate the public key. * * @param h an URLContext * @param buf handshake data (1536 bytes) * @return zero on success, negative value otherwise */ int ff_rtmpe_gen_pub_key(URLContext *h, uint8_t *buf); /** * Compute the shared secret key and initialize the RC4 encryption. * * @param h an URLContext * @param serverdata server data (1536 bytes) * @param clientdata client data (1536 bytes) * @param type the position of the server digest * @return zero on success, negative value otherwise */ int ff_rtmpe_compute_secret_key(URLContext *h, const uint8_t *serverdata, const uint8_t *clientdata, int type); /** * Encrypt the signature. * * @param h an URLContext * @param signature the signature to encrypt * @param digest the digest used for finding the encryption key * @param type type of encryption (8 for XTEA, 9 for Blowfish) */ void ff_rtmpe_encrypt_sig(URLContext *h, uint8_t *signature, const uint8_t *digest, int type); /** * Update the keystream and set RC4 keys for encryption. * * @param h an URLContext * @return zero on success, negative value otherwise */ int ff_rtmpe_update_keystream(URLContext *h); #endif /* AVFORMAT_RTMPCRYPT_H */