FFmpeg
rtmpcrypt.h
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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 */
type
it s the only field you need to keep assuming you have a context There is some magic you don t need to care about around this just let it vf type
Definition: writing_filters.txt:86
signature
static const char signature[]
Definition: ipmovie.c:615
ff_rtmpe_gen_pub_key
int ff_rtmpe_gen_pub_key(URLContext *h, uint8_t *buf)
Initialize the Diffie-Hellmann context and generate the public key.
Definition: rtmpcrypt.c:122
ff_rtmpe_compute_secret_key
int ff_rtmpe_compute_secret_key(URLContext *h, const uint8_t *serverdata, const uint8_t *clientdata, int type)
Compute the shared secret key and initialize the RC4 encryption.
Definition: rtmpcrypt.c:145
URLContext
Definition: url.h:38
ff_rtmpe_update_keystream
int ff_rtmpe_update_keystream(URLContext *h)
Update the keystream and set RC4 keys for encryption.
Definition: rtmpcrypt.c:223
url.h
uint8_t
uint8_t
Definition: audio_convert.c:194
h
h
Definition: vp9dsp_template.c:2038
ff_rtmpe_encrypt_sig
void ff_rtmpe_encrypt_sig(URLContext *h, uint8_t *signature, const uint8_t *digest, int type)
Encrypt the signature.
Definition: rtmpcrypt.c:207
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