SHA-512

SHA-512 (Secure Hash Algorithm) hash function implementations. More...

Files
file	sha512.h
	Public header for SHA-512 implementation.

Functions
struct AVSHA512 *	av_sha512_alloc (void)
	Allocate an AVSHA512 context. More...
int	av_sha512_init (struct AVSHA512 *context, int bits)
	Initialize SHA-2 512 hashing. More...
void	av_sha512_update (struct AVSHA512 *context, const uint8_t *data, size_t len)
	Update hash value. More...
void	av_sha512_final (struct AVSHA512 *context, uint8_t *digest)
	Finish hashing and output digest value. More...

Variables
const int	av_sha512_size

Detailed Description

SHA-512 (Secure Hash Algorithm) hash function implementations.

This module supports the following SHA-2 hash functions:

• SHA-512/224: 224 bits
• SHA-512/256: 256 bits
• SHA-384: 384 bits
• SHA-512: 512 bits

See also

For SHA-1, SHA-256, and variants thereof, see SHA.

Function Documentation

av_sha512_alloc()

struct AVSHA512 * av_sha512_alloc

(

void

)

Allocate an AVSHA512 context.

av_sha512_init()

int av_sha512_init	(	struct AVSHA512 *	context,
		int	bits
	)

Initialize SHA-2 512 hashing.

Parameters

context	pointer to the function context (of size av_sha512_size)
bits	number of bits in digest (224, 256, 384 or 512 bits)

Returns

zero if initialization succeeded, -1 otherwise

av_sha512_update()

void av_sha512_update	(	struct AVSHA512 *	context,
		const uint8_t *	data,
		size_t	len
	)

Update hash value.

Parameters

context	hash function context
data	input data to update hash with
len	input data length

av_sha512_final()

void av_sha512_final	(	struct AVSHA512 *	context,
		uint8_t *	digest
	)

Finish hashing and output digest value.

Parameters

context	hash function context
digest	buffer where output digest value is stored

Variable Documentation

av_sha512_size

const int av_sha512_size

extern