NAME

       Tspi_Hash_UpdateHashValue - update the 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_UpdateHashValue(TSS_HHASH hHash, UINT32 ulDataLength, BYTE* rgbData);

DESCRIPTION

       Tspi_Hash_UpdateHashValue updates the hash value of a hash object with new information. If
       the object was created with the flag TSS_HASH_OTHER,  then  this  method  will  return  an
       error.  The object can't be modified after Tspi_Hash_SetHashValue, Tspi_Hash_GetHashValue,
       Tspi_Hash_Sign, or Tspi_Hash_VerifySignature have been called on it.

PARAMETERS

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

   ulDataLength
       Indicates the length of the data provided at the parameter rgbData.

   rgbData
       A pointer to the data.

RETURN CODES

       Tspi_Hash_UpdateHashValue 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_UpdateHashValue  conforms  to the Trusted Computing Group Software Specification
       version 1.1 Golden

SEE ALSO

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