Accelerated SHA-224/SHA-256 Hash FunctionCryptography Hardware Acceleration Plugins

Detailed Description

Accelerated SHA-224/SHA-256 cryptographic hash function using the CRYPTO or SE peripheral.

Data Structures

struct  mbedtls_sha256_context
 SHA-256 context structure.
 

Functions

void mbedtls_sha256_init (mbedtls_sha256_context *ctx)
 Initialize SHA-256 context.
 
void mbedtls_sha256_free (mbedtls_sha256_context *ctx)
 Clear SHA-256 context.
 
void mbedtls_sha256_clone (mbedtls_sha256_context *dst, const mbedtls_sha256_context *src)
 Clone (the state of) a SHA-256 context.
 
int mbedtls_sha256_starts_ret (mbedtls_sha256_context *ctx, int is224)
 SHA-256 context setup.
 
int mbedtls_sha256_update_ret (mbedtls_sha256_context *ctx, const unsigned char *input, size_t ilen)
 SHA-256 process buffer.
 
int mbedtls_sha256_finish_ret (mbedtls_sha256_context *ctx, unsigned char output[32])
 SHA-256 final digest.
 
int mbedtls_internal_sha256_process (mbedtls_sha256_context *ctx, const unsigned char data[64])
 This function processes a single data block within the ongoing SHA-256 computation. This function is for internal use only.
 

Function Documentation

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

This function processes a single data block within the ongoing SHA-256 computation. This function is for internal use only.

Parameters
ctxThe SHA-256 context.
dataThe buffer holding one block of data.
Returns
0 on success.
void mbedtls_sha256_clone ( mbedtls_sha256_context dst,
const mbedtls_sha256_context src 
)

Clone (the state of) a SHA-256 context.

Parameters
dstThe destination context
srcThe context to be cloned
int mbedtls_sha256_finish_ret ( mbedtls_sha256_context ctx,
unsigned char  output[32] 
)

SHA-256 final digest.

Parameters
ctxSHA-256 context
outputSHA-224/256 checksum result
Returns
0 if successful
void mbedtls_sha256_free ( mbedtls_sha256_context ctx)

Clear SHA-256 context.

Parameters
ctxSHA-256 context to be cleared
void mbedtls_sha256_init ( mbedtls_sha256_context ctx)

Initialize SHA-256 context.

Parameters
ctxSHA-256 context to be initialized
int mbedtls_sha256_starts_ret ( mbedtls_sha256_context ctx,
int  is224 
)

SHA-256 context setup.

Parameters
ctxcontext to be initialized
is2240 = use SHA256, 1 = use SHA224
Returns
0 if successful
int mbedtls_sha256_update_ret ( mbedtls_sha256_context ctx,
const unsigned char *  input,
size_t  ilen 
)

SHA-256 process buffer.

Parameters
ctxSHA-256 context
inputbuffer holding the data
ilenlength of the input data
Returns
0 if successful