STCRYPTOLIB_SHA256_ALT

MBEDTLS IMPLEMENTATION STCRYPTOLIB SHA256 ALT FUNCTIONS

group MBEDTLS_IMPLEMENTATION_STCRYPTOLIB_SHA256_ALT_FUNCTIONS

Public API functions for STCRYPTOLIB SHA256 alternate implementation.

FIPS-180-2 compliant SHA-256 implementation

This file implements SHA256 based on STM32 crypto library.

The SHA-256 Secure Hash Standard was published by NIST in 2002.

http://csrc.nist.gov/publications/fips/fips180-2/fips180-2.pdf

Functions

void mbedtls_sha256_init ( mbedtls_sha256_context * ctx )

void mbedtls_sha256_free ( mbedtls_sha256_context * ctx )

void mbedtls_sha256_clone ( mbedtls_sha256_context * dst , const mbedtls_sha256_context * src )

int mbedtls_sha256_starts ( mbedtls_sha256_context * ctx , int is224 )

int mbedtls_internal_sha256_process ( mbedtls_sha256_context * ctx , const unsigned char data [ 64 ] )

int mbedtls_sha256_update ( mbedtls_sha256_context * ctx , const unsigned char * input , size_t ilen )

int mbedtls_sha256_finish ( mbedtls_sha256_context * ctx , unsigned char * output )

MBEDTLS IMPLEMENTATION STCRYPTOLIB SHA256 ALT TYPES

group MBEDTLS_IMPLEMENTATION_STCRYPTOLIB_SHA256_ALT_TYPES

This file contains SHA-224 and SHA-256 definitions and functions based on STM32 crypto library.

The Secure Hash Algorithms 224 and 256 (SHA-224 and SHA-256) cryptographic hash functions are defined in FIPS 180-4: Secure Hash Standard (SHS) .

SHA-256 context structure

The structure is used both for SHA-256 and for SHA-224 checksum calculations. The choice between these two is made in the call to mbedtls_sha256_starts_ret().

struct mbedtls_sha256_context

#include <hal_sha256_alt.h>

Public Members

int is224

0 = use SHA256, 1 = use SHA224

uint32_t output_size_byte

output length

cmox_hash_handle_t * hash_ctx

Hash ctx

cmox_sha256_handle_t sha256_ctx

Sha256 ctx

cmox_sha224_handle_t sha224_ctx

Sha224 ctx

size_t dig_len

Digest len generate by STCryptoLib

uint8_t is224

1 if sha224, 0 otherwise