rc4.c File Reference

#include "avutil.h"
#include "common.h"
#include "rc4.h"

Include dependency graph for rc4.c:

Go to the source code of this file.

Typedefs
typedef struct AVRC4	AVRC4

Functions
int	av_rc4_init (AVRC4 *r, const uint8_t *key, int key_bits, int decrypt)
	Initializes an AVRC4 context. More...
void	av_rc4_crypt (AVRC4 *r, uint8_t *dst, const uint8_t *src, int count, uint8_t *iv, int decrypt)
	Encrypts / decrypts using the RC4 algorithm. More...

Typedef Documentation

typedef struct AVRC4 AVRC4

Definition at line 27 of file rc4.c.

Function Documentation

void av_rc4_crypt	(	struct AVRC4 *	d,
		uint8_t *	dst,
		const uint8_t *	src,
		int	count,
		uint8_t *	iv,
		int	decrypt
	)

Encrypts / decrypts using the RC4 algorithm.

Parameters

count	number of bytes
dst	destination array, can be equal to src
src	source array, can be equal to dst, may be NULL
iv	not (yet) used for RC4, should be NULL
decrypt	0 for encryption, 1 for decryption, not (yet) used

Definition at line 50 of file rc4.c.

Referenced by ff_asfcrypt_dec(), ff_rtmpe_update_keystream(), rtmpe_read(), and rtmpe_write().

int av_rc4_init	(	struct AVRC4 *	d,
		const uint8_t *	key,
		int	key_bits,
		int	decrypt
	)

Initializes an AVRC4 context.

Parameters

key_bits	must be a multiple of 8
decrypt	0 for encryption, 1 for decryption, currently has no effect

Definition at line 29 of file rc4.c.

Referenced by ff_asfcrypt_dec(), and ff_rtmpe_compute_secret_key().