mbed TLS v2.2.0
Data Structures | Macros | Functions
SHA-1 cryptographic hash function

Detailed Description

CRYPTO hardware accelerated SHA-1 cryptographic hash function.

Collaboration diagram for SHA-1 cryptographic hash function:

Data Structures

struct  mbedtls_sha1_context
 SHA-1 context structure. More...
 

Macros

#define MBEDTLS_ERR_SHA1_BAD_INPUT   -0x5100
 Bad input parameters to function. More...
 

Functions

void mbedtls_sha1_init (mbedtls_sha1_context *ctx)
 Initialize SHA-1 context. More...
 
void mbedtls_sha1_free (mbedtls_sha1_context *ctx)
 Clear SHA-1 context. More...
 
void mbedtls_sha1_clone (mbedtls_sha1_context *dst, const mbedtls_sha1_context *src)
 Clone (the state of) a SHA-1 context. More...
 
int mbedtls_sha1_starts (mbedtls_sha1_context *ctx)
 SHA-1 context setup. More...
 
void mbedtls_sha1_update (mbedtls_sha1_context *ctx, const unsigned char *input, size_t ilen)
 SHA-1 process buffer. More...
 
void mbedtls_sha1_finish (mbedtls_sha1_context *ctx, unsigned char output[20])
 SHA-1 final digest. More...
 
void mbedtls_sha1_process (mbedtls_sha1_context *ctx, const unsigned char data[64])
 
int mbedtls_sha1 (const unsigned char *input, size_t ilen, unsigned char output[20])
 Output = SHA-1( input buffer ) More...
 
int mbedtls_sha1_self_test (int verbose, int device_instance)
 Checkup routine. More...
 

Macro Definition Documentation

#define MBEDTLS_ERR_SHA1_BAD_INPUT   -0x5100

Bad input parameters to function.

Definition at line 49 of file sha1_alt.h.

Function Documentation

int mbedtls_sha1 ( const unsigned char *  input,
size_t  ilen,
unsigned char  output[20] 
)

Output = SHA-1( input buffer )

Parameters
inputBuffer holding the data. The input buffer needs to be big enough to hold the padding (MD-strenghtening) at the end, after the message of 'ilen' length. This function will perform MD-strengthening and append to the end of the input buffer.
ilenlength of the input data
outputSHA-1 checksum result
void mbedtls_sha1_clone ( mbedtls_sha1_context dst,
const mbedtls_sha1_context src 
)

Clone (the state of) a SHA-1 context.

Parameters
dstThe destination context
srcThe context to be cloned
void mbedtls_sha1_finish ( mbedtls_sha1_context ctx,
unsigned char  output[20] 
)

SHA-1 final digest.

Parameters
ctxSHA-1 context
outputSHA-1 checksum result
void mbedtls_sha1_free ( mbedtls_sha1_context ctx)

Clear SHA-1 context.

Parameters
ctxSHA-1 context to be cleared
void mbedtls_sha1_init ( mbedtls_sha1_context ctx)

Initialize SHA-1 context.

Parameters
ctxSHA-1 context to be initialized
void mbedtls_sha1_process ( mbedtls_sha1_context ctx,
const unsigned char  data[64] 
)
int mbedtls_sha1_self_test ( int  verbose,
int  device_instance 
)

Checkup routine.

Returns
0 if successful, or 1 if the test failed
int mbedtls_sha1_starts ( mbedtls_sha1_context ctx)

SHA-1 context setup.

Parameters
ctxcontext to be initialized
void mbedtls_sha1_update ( mbedtls_sha1_context ctx,
const unsigned char *  input,
size_t  ilen 
)

SHA-1 process buffer.

Parameters
ctxSHA-1 context
inputbuffer holding the data
ilenlength of the input data