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SHA-1 and SHA-256 (Secure Hash Algorithm) hash function implementations. More...

Files

file  sha.h
 Public header for SHA-1 & SHA-256 hash function implementations.
 

Functions

struct AVSHAav_sha_alloc (void)
 Allocate an AVSHA context. More...
 
int av_sha_init (struct AVSHA *context, int bits)
 Initialize SHA-1 or SHA-2 hashing. More...
 
void av_sha_update (struct AVSHA *ctx, const uint8_t *data, unsigned int len)
 Update hash value. More...
 
void av_sha_final (struct AVSHA *context, uint8_t *digest)
 Finish hashing and output digest value. More...
 

Variables

const int av_sha_size
 

Detailed Description

SHA-1 and SHA-256 (Secure Hash Algorithm) hash function implementations.

This module supports the following SHA hash functions:

See also
For SHA-384, SHA-512, and variants thereof, see SHA-512.

Function Documentation

struct AVSHA* av_sha_alloc ( void  )

Allocate an AVSHA context.

Definition at line 45 of file sha.c.

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

int av_sha_init ( struct AVSHA context,
int  bits 
)

Initialize SHA-1 or SHA-2 hashing.

Parameters
contextpointer to the function context (of size av_sha_size)
bitsnumber of bits in digest (SHA-1 - 160 bits, SHA-2 224 or 256 bits)
Returns
zero if initialization succeeded, -1 otherwise

Definition at line 273 of file sha.c.

Referenced by av_hash_init(), get_generic_seed(), main(), mkv_write_attachments(), and mov_read_adrm().

void av_sha_update ( struct AVSHA ctx,
const uint8_t data,
unsigned int  len 
)

Update hash value.

Parameters
ctxhash function context
datainput data to update hash with
leninput data length

Definition at line 315 of file sha.c.

Referenced by av_hash_update(), av_hmac_alloc(), av_sha_final(), get_generic_seed(), main(), mkv_write_attachments(), and mov_read_adrm().

void av_sha_final ( struct AVSHA context,
uint8_t digest 
)

Finish hashing and output digest value.

Parameters
contexthash function context
digestbuffer where output digest value is stored

Definition at line 345 of file sha.c.

Referenced by av_hash_final(), av_hmac_alloc(), get_generic_seed(), main(), mkv_write_attachments(), and mov_read_adrm().

Variable Documentation

const int av_sha_size

Definition at line 43 of file sha.c.

Referenced by get_generic_seed().