Accelerated SHA-384/SHA-512 Hash FunctionCryptography Hardware Acceleration Plugins

Detailed Description

Accelerated SHA-384/SHA-512 cryptographic hash function using the SE peripheral.

Data Structures

struct  mbedtls_sha512_context
 SHA-512 context structure.
 

Functions

void mbedtls_sha512_init (mbedtls_sha512_context *ctx)
 Initialize SHA-512 context.
 
void mbedtls_sha512_free (mbedtls_sha512_context *ctx)
 Clear SHA-512 context.
 
void mbedtls_sha512_clone (mbedtls_sha512_context *dst, const mbedtls_sha512_context *src)
 Clone (the state of) a SHA-512 context.
 
int mbedtls_sha512_starts_ret (mbedtls_sha512_context *ctx, int is384)
 This function starts a SHA-384 or SHA-512 checksum calculation.
 
int mbedtls_sha512_update_ret (mbedtls_sha512_context *ctx, const unsigned char *input, size_t ilen)
 This function feeds an input buffer into an ongoing SHA-512 checksum calculation.
 
int mbedtls_sha512_finish_ret (mbedtls_sha512_context *ctx, unsigned char output[64])
 This function finishes the SHA-512 operation, and writes the result to the output buffer. This function is for internal use only.
 
int mbedtls_internal_sha512_process (mbedtls_sha512_context *ctx, const unsigned char data[128])
 This function processes a single data block within the ongoing SHA-512 computation.
 

Function Documentation

int mbedtls_internal_sha512_process ( mbedtls_sha512_context ctx,
const unsigned char  data[128] 
)

This function processes a single data block within the ongoing SHA-512 computation.

Parameters
ctxThe SHA-512 context.
dataThe buffer holding one block of data.
Returns
0 on success.
void mbedtls_sha512_clone ( mbedtls_sha512_context dst,
const mbedtls_sha512_context src 
)

Clone (the state of) a SHA-512 context.

Parameters
dstThe destination context
srcThe context to be cloned
int mbedtls_sha512_finish_ret ( mbedtls_sha512_context ctx,
unsigned char  output[64] 
)

This function finishes the SHA-512 operation, and writes the result to the output buffer. This function is for internal use only.

Parameters
ctxThe SHA-512 context.
outputThe SHA-384 or SHA-512 checksum result.
Returns
0 on success.
void mbedtls_sha512_free ( mbedtls_sha512_context ctx)

Clear SHA-512 context.

Parameters
ctxSHA-512 context to be cleared
void mbedtls_sha512_init ( mbedtls_sha512_context ctx)

Initialize SHA-512 context.

Parameters
ctxSHA-512 context to be initialized
int mbedtls_sha512_starts_ret ( mbedtls_sha512_context ctx,
int  is384 
)

This function starts a SHA-384 or SHA-512 checksum calculation.

Parameters
ctxThe SHA-512 context to initialize.
is384Determines which function to use.
  • 0: Use SHA-512.
  • 1: Use SHA-384.
Returns
0 on success.
int mbedtls_sha512_update_ret ( mbedtls_sha512_context ctx,
const unsigned char *  input,
size_t  ilen 
)

This function feeds an input buffer into an ongoing SHA-512 checksum calculation.

Parameters
ctxThe SHA-512 context.
inputThe buffer holding the input data.
ilenThe length of the input data.
Returns
0 on success.