Tspi_Hash_GetHashValue: Get the current hash value of a hash object

SYNOPSIS

#include <tss/platform.h>
#include <tss/tcpa_defines.h>
#include <tss/tcpa_typedef.h>
#include <tss/tcpa_struct.h>
#include <tss/tss_typedef.h>
#include <tss/tss_structs.h>
#include <tss/tspi.h>

TSS_RESULT Tspi_Hash_GetHashValue(TSS_HHASH hHash, UINT32* pulHashValueLength, BYTE** prgbHashValue);

DESCRIPTION

Tspi_Hash_GetHashValue gets the hash value of a hash object. Tspi_Context_FreeMemory must be used to clean up after this function, as memory is allocated for the prgbHashValue data.

PARAMETERS

hHash

The handle to the hash object instance whose hash value should be signed.

pulHashValueLength

Receives the length of the hash value data returned at the parameter prgbHashValue.

prgbHashValue

Receives a pointer to the hash value data.

RETURN CODES

Tspi_Hash_GetHashValue returns TSS_SUCCESS on success, otherwise one of the following values is returned:

TSS_E_INVALID_HANDLE: hHash is not a valid handle.
TSS_E_INTERNAL_ERROR: An internal SW error has been detected.
TSS_E_BAD_PARAMETER: One or more parameters is bad.
TSS_E_HASH_INVALID_LENGTH: Hash length is inconsistent with hash algorithm.
TSS_E_HASH_NO_DATA: Hash object has no internal hash value.

CONFORMING TO

Tspi_Hash_GetHashValue conforms to the Trusted Computing Group Software Specification version 1.1 Golden

RELATED TO Tspi_Hash_GetHashValue…

Tspi_Hash_UpdateHash(3), Tspi_Hash_Sign(3), Tspi_Hash_VerifySignature(3), Tspi_Hash_SetHashValue(3).

Tspi_Hash_GetHashValue (3)