rtmpcrypt.c File Reference

RTMPE protocol. More...

#include "libavutil/blowfish.h"
#include "libavutil/intreadwrite.h"
#include "libavutil/opt.h"
#include "libavutil/rc4.h"
#include "libavutil/xtea.h"
#include "internal.h"
#include "rtmp.h"
#include "rtmpdh.h"
#include "rtmpcrypt.h"
#include "url.h"

Classes
struct	RTMPEContext

Macros
#define	OFFSET(x)   offsetof(RTMPEContext, x)
#define	DEC   AV_OPT_FLAG_DECODING_PARAM

Typedefs
typedef struct RTMPEContext	RTMPEContext

Functions
int	ff_rtmpe_gen_pub_key (URLContext *h, uint8_t *buf)
	Initialize the Diffie-Hellmann context and generate the public key. More...
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. More...
void	ff_rtmpe_encrypt_sig (URLContext *h, uint8_t *sig, const uint8_t *digest, int type)
	Encrypt the signature. More...
int	ff_rtmpe_update_keystream (URLContext *h)
	Update the keystream and set RC4 keys for encryption. More...

Variables
const URLProtocol	ff_ffrtmpcrypt_protocol

Detailed Description

RTMPE protocol.

Function Documentation

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.

Parameters

h	an URLContext
serverdata	server data (1536 bytes)
clientdata	client data (1536 bytes)
type	the position of the server digest

Returns

zero on success, negative value otherwise

ff_rtmpe_encrypt_sig()

void ff_rtmpe_encrypt_sig	(	URLContext *	h,
		uint8_t *	signature,
		const uint8_t *	digest,
		int	type
	)

Encrypt the signature.

Parameters

h	an URLContext
signature	the signature to encrypt
digest	the digest used for finding the encryption key
type	type of encryption (8 for XTEA, 9 for Blowfish)

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.

Parameters

h	an URLContext
buf	handshake data (1536 bytes)

Returns

zero on success, negative value otherwise

ff_rtmpe_update_keystream()

int ff_rtmpe_update_keystream

(

URLContext *

h

)

Update the keystream and set RC4 keys for encryption.

Parameters

h	an URLContext

Returns

zero on success, negative value otherwise

Variable Documentation

ff_ffrtmpcrypt_protocol

const URLProtocol ff_ffrtmpcrypt_protocol

Initial value:

= {
    .name            = "ffrtmpcrypt",
    .url_open        = rtmpe_open,
    .url_read        = rtmpe_read,
    .url_write       = rtmpe_write,
    .url_close       = rtmpe_close,
    .priv_data_size  = sizeof(RTMPEContext),
    .flags           = URL_PROTOCOL_FLAG_NETWORK,
    .priv_data_class = &ffrtmpcrypt_class,
}