DragonFly On-Line Manual Pages

Tspi_Hash_GetHashValue(3)                   DragonFly Library Functions Manual

                   TCG Software Stack Developer's Reference

NAME
       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

SEE ALSO
       Tspi_Hash_UpdateHashValue(3), Tspi_Hash_Sign(3),
       Tspi_Hash_VerifySignature(3), Tspi_Hash_SetHashValue(3).

TSS 1.1                           2004-05-25         Tspi_Hash_GetHashValue(3)