ReactOS  0.4.14-dev-98-gb0d4763
sha256.h File Reference

The SHA-224 and SHA-256 cryptographic hash function. More...

#include "config.h"
#include <stddef.h>
#include <stdint.h>
Include dependency graph for sha256.h:
This graph shows which files directly or indirectly include this file:

Go to the source code of this file.

Classes

struct  mbedtls_sha256_context
 The SHA-256 context structure. More...
 

Macros

#define MBEDTLS_ERR_SHA256_HW_ACCEL_FAILED   -0x0037
 
#define MBEDTLS_DEPRECATED
 
#define MBEDTLS_DEPRECATED
 

Functions

void mbedtls_sha256_init (mbedtls_sha256_context *ctx)
 This function initializes a SHA-256 context. More...
 
void mbedtls_sha256_free (mbedtls_sha256_context *ctx)
 This function clears a SHA-256 context. More...
 
void mbedtls_sha256_clone (mbedtls_sha256_context *dst, const mbedtls_sha256_context *src)
 This function clones the state of a SHA-256 context. More...
 
int mbedtls_sha256_starts_ret (mbedtls_sha256_context *ctx, int is224)
 This function starts a SHA-224 or SHA-256 checksum calculation. More...
 
int mbedtls_sha256_update_ret (mbedtls_sha256_context *ctx, const unsigned char *input, size_t ilen)
 This function feeds an input buffer into an ongoing SHA-256 checksum calculation. More...
 
int mbedtls_sha256_finish_ret (mbedtls_sha256_context *ctx, unsigned char output[32])
 This function finishes the SHA-256 operation, and writes the result to the output buffer. More...
 
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. More...
 
MBEDTLS_DEPRECATED void mbedtls_sha256_starts (mbedtls_sha256_context *ctx, int is224)
 This function starts a SHA-256 checksum calculation. More...
 
MBEDTLS_DEPRECATED void mbedtls_sha256_update (mbedtls_sha256_context *ctx, const unsigned char *input, size_t ilen)
 This function feeds an input buffer into an ongoing SHA-256 checksum calculation. More...
 
MBEDTLS_DEPRECATED void mbedtls_sha256_finish (mbedtls_sha256_context *ctx, unsigned char output[32])
 This function finishes the SHA-256 operation, and writes the result to the output buffer. More...
 
MBEDTLS_DEPRECATED void mbedtls_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. More...
 
int mbedtls_sha256_ret (const unsigned char *input, size_t ilen, unsigned char output[32], int is224)
 This function calculates the SHA-224 or SHA-256 checksum of a buffer. More...
 
MBEDTLS_DEPRECATED void mbedtls_sha256 (const unsigned char *input, size_t ilen, unsigned char output[32], int is224)
 This function calculates the SHA-224 or SHA-256 checksum of a buffer. More...
 
int mbedtls_sha256_self_test (int verbose)
 The SHA-224 and SHA-256 checkup routine. More...
 

Detailed Description

The SHA-224 and SHA-256 cryptographic hash function.

Definition in file sha256.h.

Macro Definition Documentation

◆ MBEDTLS_DEPRECATED [1/2]

#define MBEDTLS_DEPRECATED

Definition at line 239 of file sha256.h.

◆ MBEDTLS_DEPRECATED [2/2]

#define MBEDTLS_DEPRECATED

Definition at line 239 of file sha256.h.

◆ MBEDTLS_ERR_SHA256_HW_ACCEL_FAILED

#define MBEDTLS_ERR_SHA256_HW_ACCEL_FAILED   -0x0037

SHA-256 hardware accelerator failed

Definition at line 38 of file sha256.h.

Function Documentation

◆ mbedtls_internal_sha256_process()

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.

◆ mbedtls_sha256()

MBEDTLS_DEPRECATED void mbedtls_sha256 ( const unsigned char input,
size_t  ilen,
unsigned char  output[32],
int  is224 
)

This function calculates the SHA-224 or SHA-256 checksum of a buffer.

The function allocates the context, performs the calculation, and frees the context.

The SHA-256 result is calculated as output = SHA-256(input buffer).

Deprecated:
Superseded by mbedtls_sha256_ret() in 2.7.0.
Parameters
inputThe buffer holding the data.
ilenThe length of the input data.
outputThe SHA-224 or SHA-256 checksum result.
is224Determines which function to use.
  • 0: Use SHA-256.
  • 1: Use SHA-224.

◆ mbedtls_sha256_clone()

void mbedtls_sha256_clone ( mbedtls_sha256_context dst,
const mbedtls_sha256_context src 
)

This function clones the state of a SHA-256 context.

Parameters
dstThe destination context.
srcThe context to clone.

◆ mbedtls_sha256_finish()

MBEDTLS_DEPRECATED void mbedtls_sha256_finish ( mbedtls_sha256_context ctx,
unsigned char  output[32] 
)

This function finishes the SHA-256 operation, and writes the result to the output buffer.

Deprecated:
Superseded by mbedtls_sha256_finish_ret() in 2.7.0.
Parameters
ctxThe SHA-256 context.
outputThe SHA-224or SHA-256 checksum result.

◆ mbedtls_sha256_finish_ret()

int mbedtls_sha256_finish_ret ( mbedtls_sha256_context ctx,
unsigned char  output[32] 
)

This function finishes the SHA-256 operation, and writes the result to the output buffer.

Parameters
ctxThe SHA-256 context.
outputThe SHA-224 or SHA-256 checksum result.
Returns
0 on success.

◆ mbedtls_sha256_free()

void mbedtls_sha256_free ( mbedtls_sha256_context ctx)

This function clears a SHA-256 context.

Parameters
ctxThe SHA-256 context to clear.

◆ mbedtls_sha256_init()

void mbedtls_sha256_init ( mbedtls_sha256_context ctx)

This function initializes a SHA-256 context.

Parameters
ctxThe SHA-256 context to initialize.

◆ mbedtls_sha256_process()

MBEDTLS_DEPRECATED void mbedtls_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.

Deprecated:
Superseded by mbedtls_internal_sha256_process() in 2.7.0.
Parameters
ctxThe SHA-256 context.
dataThe buffer holding one block of data.

◆ mbedtls_sha256_ret()

int mbedtls_sha256_ret ( const unsigned char input,
size_t  ilen,
unsigned char  output[32],
int  is224 
)

This function calculates the SHA-224 or SHA-256 checksum of a buffer.

The function allocates the context, performs the calculation, and frees the context.

The SHA-256 result is calculated as output = SHA-256(input buffer).

Parameters
inputThe buffer holding the input data.
ilenThe length of the input data.
outputThe SHA-224 or SHA-256 checksum result.
is224Determines which function to use.
  • 0: Use SHA-256.
  • 1: Use SHA-224.

◆ mbedtls_sha256_self_test()

int mbedtls_sha256_self_test ( int  verbose)

The SHA-224 and SHA-256 checkup routine.

Returns
0 on success, or 1 on failure.

◆ mbedtls_sha256_starts()

MBEDTLS_DEPRECATED void mbedtls_sha256_starts ( mbedtls_sha256_context ctx,
int  is224 
)

This function starts a SHA-256 checksum calculation.

Deprecated:
Superseded by mbedtls_sha256_starts_ret() in 2.7.0.
Parameters
ctxThe SHA-256 context to initialize.
is224Determines which function to use.
  • 0: Use SHA-256.
  • 1: Use SHA-224.

◆ mbedtls_sha256_starts_ret()

int mbedtls_sha256_starts_ret ( mbedtls_sha256_context ctx,
int  is224 
)

This function starts a SHA-224 or SHA-256 checksum calculation.

Parameters
ctxThe context to initialize.
is224Determines which function to use.
  • 0: Use SHA-256.
  • 1: Use SHA-224.
Returns
0 on success.

◆ mbedtls_sha256_update()

MBEDTLS_DEPRECATED void mbedtls_sha256_update ( mbedtls_sha256_context ctx,
const unsigned char input,
size_t  ilen 
)

This function feeds an input buffer into an ongoing SHA-256 checksum calculation.

Deprecated:
Superseded by mbedtls_sha256_update_ret() in 2.7.0.
Parameters
ctxThe SHA-256 context to initialize.
inputThe buffer holding the data.
ilenThe length of the input data.

◆ mbedtls_sha256_update_ret()

int mbedtls_sha256_update_ret ( mbedtls_sha256_context ctx,
const unsigned char input,
size_t  ilen 
)

This function feeds an input buffer into an ongoing SHA-256 checksum calculation.

Parameters
ctxSHA-256 context
inputbuffer holding the data
ilenlength of the input data
Returns
0 on success.