SHA2
Utilities > Cryptography

SHA2 utilities. More...

Modules

Types
SHA2 data types.

Functions

void gos_sha256_starts ( gos_sha256_context_t *ctx, int32_t is224)
SHA-256 context setup. More...
void gos_sha256_update ( gos_sha256_context_t *ctx, const unsigned char *input, uint32_t ilen)
SHA-256 process buffer. More...
void gos_sha256_finish ( gos_sha256_context_t *ctx, unsigned char output[32])
SHA-256 final digest. More...
void gos_sha256 (const unsigned char *input, uint32_t ilen, unsigned char output[32], int32_t is224)
Output = SHA-256( input buffer ) More...
void gos_sha256_hmac_starts ( gos_sha256_hmac_context_t *ctx, const unsigned char *key, uint32_t keylen, int32_t is224)
SHA-256 HMAC context setup. More...
void gos_sha256_hmac_update ( gos_sha256_hmac_context_t *ctx, const unsigned char *input, uint32_t ilen)
SHA-256 HMAC process buffer. More...
void gos_sha256_hmac_finish ( gos_sha256_hmac_context_t *ctx, unsigned char output[32])
SHA-256 HMAC final digest. More...
void gos_sha256_hmac (const unsigned char *key, uint32_t keylen, const unsigned char *input, uint32_t ilen, unsigned char output[32], int32_t is224)
Output = HMAC-SHA-256( hmac key, input buffer ) More...

Detailed Description

SHA2 utilities.

Function Documentation

◆ gos_sha256()

void gos_sha256 ( const unsigned char * input,
uint32_t ilen,
unsigned char output[32],
int32_t is224
)

Output = SHA-256( input buffer )

Parameters
input buffer holding the data
ilen length of the input data
output SHA-224/256 checksum result
is224 0 = use SHA256, 1 = use SHA224

◆ gos_sha256_finish()

void gos_sha256_finish ( gos_sha256_context_t * ctx,
unsigned char output[32]
)

SHA-256 final digest.

Parameters
ctx SHA-256 context
output SHA-224/256 checksum result

◆ gos_sha256_hmac()

void gos_sha256_hmac ( const unsigned char * key,
uint32_t keylen,
const unsigned char * input,
uint32_t ilen,
unsigned char output[32],
int32_t is224
)

Output = HMAC-SHA-256( hmac key, input buffer )

Parameters
key HMAC secret key
keylen Length of key
input buffer holding the data
ilen Length of input buffer
output HMAC-SHA-224/256 result
is224 0 = use SHA256, 1 = use SHA224

◆ gos_sha256_hmac_finish()

void gos_sha256_hmac_finish ( gos_sha256_hmac_context_t * ctx,
unsigned char output[32]
)

SHA-256 HMAC final digest.

Parameters
ctx HMAC context
output SHA-224/256 HMAC checksum result

◆ gos_sha256_hmac_starts()

void gos_sha256_hmac_starts ( gos_sha256_hmac_context_t * ctx,
const unsigned char * key,
uint32_t keylen,
int32_t is224
)

SHA-256 HMAC context setup.

Parameters
ctx HMAC context to be initialized
key HMAC secret key
keylen length of the HMAC key
is224 0 = use SHA256, 1 = use SHA224

◆ gos_sha256_hmac_update()

void gos_sha256_hmac_update ( gos_sha256_hmac_context_t * ctx,
const unsigned char * input,
uint32_t ilen
)

SHA-256 HMAC process buffer.

Parameters
ctx HMAC context
input buffer holding the data
ilen length of the input data

◆ gos_sha256_starts()

void gos_sha256_starts ( gos_sha256_context_t * ctx,
int32_t is224
)

SHA-256 context setup.

Parameters
ctx context to be initialized
is224 0 = use SHA256, 1 = use SHA224

◆ gos_sha256_update()

void gos_sha256_update ( gos_sha256_context_t * ctx,
const unsigned char * input,
uint32_t ilen
)

SHA-256 process buffer.

Parameters
ctx SHA-256 context
input buffer holding the data
ilen length of the input data