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