aes_ctr.h File Reference

#include <stdint.h>
#include "attributes.h"

Go to the source code of this file.

Macros
#define	AES_CTR_KEY_SIZE   (16)
#define	AES_CTR_IV_SIZE   (8)

Functions
struct AVAESCTR *	av_aes_ctr_alloc (void)
	Allocate an AVAESCTR context. More...
int	av_aes_ctr_init (struct AVAESCTR *a, const uint8_t *key)
	Initialize an AVAESCTR context. More...
void	av_aes_ctr_free (struct AVAESCTR *a)
	Release an AVAESCTR context. More...
void	av_aes_ctr_crypt (struct AVAESCTR *a, uint8_t *dst, const uint8_t *src, int size)
	Process a buffer using a previously initialized context. More...
const uint8_t *	av_aes_ctr_get_iv (struct AVAESCTR *a)
	Get the current iv. More...
void	av_aes_ctr_set_random_iv (struct AVAESCTR *a)
	Generate a random iv. More...
void	av_aes_ctr_set_iv (struct AVAESCTR *a, const uint8_t *iv)
	Forcefully change the 8-byte iv. More...
void	av_aes_ctr_set_full_iv (struct AVAESCTR *a, const uint8_t *iv)
	Forcefully change the "full" 16-byte iv, including the counter. More...
void	av_aes_ctr_increment_iv (struct AVAESCTR *a)
	Increment the top 64 bit of the iv (performed after each frame) More...

Macro Definition Documentation

AES_CTR_KEY_SIZE

#define AES_CTR_KEY_SIZE   (16)

Definition at line 29 of file aes_ctr.h.

AES_CTR_IV_SIZE

#define AES_CTR_IV_SIZE   (8)

Definition at line 30 of file aes_ctr.h.

Function Documentation

av_aes_ctr_alloc()

struct AVAESCTR * av_aes_ctr_alloc

(

void

)

Allocate an AVAESCTR context.

av_aes_ctr_init()

int av_aes_ctr_init	(	struct AVAESCTR *	a,
		const uint8_t *	key
	)

Initialize an AVAESCTR context.

Parameters

key	encryption key, must have a length of AES_CTR_KEY_SIZE

av_aes_ctr_free()

void av_aes_ctr_free

(

struct AVAESCTR *

a

)

Release an AVAESCTR context.

av_aes_ctr_crypt()

void av_aes_ctr_crypt	(	struct AVAESCTR *	a,
		uint8_t *	dst,
		const uint8_t *	src,
		int	size
	)

Process a buffer using a previously initialized context.

Parameters

dst	destination array, can be equal to src
src	source array, can be equal to dst
size	the size of src and dst

av_aes_ctr_get_iv()

const uint8_t * av_aes_ctr_get_iv

(

struct AVAESCTR *

a

)

Get the current iv.

av_aes_ctr_set_random_iv()

void av_aes_ctr_set_random_iv

(

struct AVAESCTR *

a

)

Generate a random iv.

av_aes_ctr_set_iv()

void av_aes_ctr_set_iv	(	struct AVAESCTR *	a,
		const uint8_t *	iv
	)

Forcefully change the 8-byte iv.

av_aes_ctr_set_full_iv()

void av_aes_ctr_set_full_iv	(	struct AVAESCTR *	a,
		const uint8_t *	iv
	)

Forcefully change the "full" 16-byte iv, including the counter.

av_aes_ctr_increment_iv()

void av_aes_ctr_increment_iv

(

struct AVAESCTR *

a

)

Increment the top 64 bit of the iv (performed after each frame)