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, unsigned int 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

struct AVSHA512* av_sha512_alloc

(

void

)

Allocate an AVSHA512 context.

Definition at line 43 of file sha512.c.

Referenced by av_hash_alloc(), av_hmac_alloc(), and main().

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

Definition at line 191 of file sha512.c.

Referenced by av_hash_init(), and main().

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

Update hash value.

Parameters

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

Definition at line 243 of file sha512.c.

Referenced by av_hash_update(), av_hmac_alloc(), av_sha512_final(), and main().

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

Definition at line 273 of file sha512.c.

Referenced by av_hash_final(), av_hmac_alloc(), and main().

Variable Documentation

const int av_sha512_size

Definition at line 41 of file sha512.c.