HMAC

Граф связей класса HMAC:

Определения типов
typedef struct AVHMAC	AVHMAC

Перечисления
enum	AVHMACType {   AV_HMAC_MD5, AV_HMAC_SHA1, AV_HMAC_SHA224, AV_HMAC_SHA256,   AV_HMAC_SHA384, AV_HMAC_SHA512 }

Функции
AVHMAC *	av_hmac_alloc (enum AVHMACType type)
void	av_hmac_free (AVHMAC *ctx)
void	av_hmac_init (AVHMAC *ctx, const uint8_t *key, unsigned int keylen)
void	av_hmac_update (AVHMAC *ctx, const uint8_t *data, unsigned int len)
int	av_hmac_final (AVHMAC *ctx, uint8_t *out, unsigned int outlen)
int	av_hmac_calc (AVHMAC *ctx, const uint8_t *data, unsigned int len, const uint8_t *key, unsigned int keylen, uint8_t *out, unsigned int outlen)

Подробное описание

Типы

AVHMAC

typedef struct AVHMAC AVHMAC

#include <C:/git/world-of-might-and-magic/lib/win32/x86/ffmpeg-4.2.2/include/libavutil/hmac.h>

См. определение в файле hmac.h строка 42

Перечисления

AVHMACType

enum AVHMACType

#include <C:/git/world-of-might-and-magic/lib/win32/x86/ffmpeg-4.2.2/include/libavutil/hmac.h>

Элементы перечислений
AV_HMAC_MD5
AV_HMAC_SHA1
AV_HMAC_SHA224
AV_HMAC_SHA256
AV_HMAC_SHA384
AV_HMAC_SHA512

См. определение в файле hmac.h строка 33

                {
    AV_HMAC_MD5,
    AV_HMAC_SHA1,
    AV_HMAC_SHA224,
    AV_HMAC_SHA256,
    AV_HMAC_SHA384,
    AV_HMAC_SHA512,
};

Функции

av_hmac_alloc()

AVHMAC* av_hmac_alloc

(

enum AVHMACType

type

)

#include <C:/git/world-of-might-and-magic/lib/win32/x86/ffmpeg-4.2.2/include/libavutil/hmac.h>

Allocate an AVHMAC context.

Аргументы

type	The hash function used for the HMAC.

av_hmac_free()

void av_hmac_free

(

AVHMAC *

ctx

)

#include <C:/git/world-of-might-and-magic/lib/win32/x86/ffmpeg-4.2.2/include/libavutil/hmac.h>

Free an AVHMAC context.

Аргументы

ctx	The context to free, may be NULL

av_hmac_init()

void av_hmac_init	(	AVHMAC *	ctx,
		const uint8_t *	key,
		unsigned int	keylen
	)

#include <C:/git/world-of-might-and-magic/lib/win32/x86/ffmpeg-4.2.2/include/libavutil/hmac.h>

Initialize an AVHMAC context with an authentication key.

Аргументы

ctx	The HMAC context
key	The authentication key
keylen	The length of the key, in bytes

av_hmac_update()

void av_hmac_update	(	AVHMAC *	ctx,
		const uint8_t *	data,
		unsigned int	len
	)

#include <C:/git/world-of-might-and-magic/lib/win32/x86/ffmpeg-4.2.2/include/libavutil/hmac.h>

Hash data with the HMAC.

Аргументы

ctx	The HMAC context
data	The data to hash
len	The length of the data, in bytes

av_hmac_final()

int av_hmac_final	(	AVHMAC *	ctx,
		uint8_t *	out,
		unsigned int	outlen
	)

#include <C:/git/world-of-might-and-magic/lib/win32/x86/ffmpeg-4.2.2/include/libavutil/hmac.h>

Finish hashing and output the HMAC digest.

Аргументы

ctx	The HMAC context
out	The output buffer to write the digest into
outlen	The length of the out buffer, in bytes

Возвращает

The number of bytes written to out, or a negative error code.

av_hmac_calc()

int av_hmac_calc	(	AVHMAC *	ctx,
		const uint8_t *	data,
		unsigned int	len,
		const uint8_t *	key,
		unsigned int	keylen,
		uint8_t *	out,
		unsigned int	outlen
	)

#include <C:/git/world-of-might-and-magic/lib/win32/x86/ffmpeg-4.2.2/include/libavutil/hmac.h>

Hash an array of data with a key.

Аргументы

ctx	The HMAC context
data	The data to hash
len	The length of the data, in bytes
key	The authentication key
keylen	The length of the key, in bytes
out	The output buffer to write the digest into
outlen	The length of the out buffer, in bytes

Возвращает

The number of bytes written to out, or a negative error code.