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Tspi_Hash_Sign(3)     DragonFly Library Functions Manual     Tspi_Hash_Sign(3)

                   TCG Software Stack Developer's Reference

NAME
       Tspi_Hash_Sign - sign the hash data of an object with a signing key

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_Sign(TSS_HHASH hHash,              TSS_HKEY hKey,
                                 UINT32    pulSignatureLength, BYTE**   prgbSignature);

DESCRIPTION
       Tspi_Hash_Sign signs the hash data of an object with a given signing
       key. The data must be set at the hash instance associated with hHash by
       calling Tspi_Hash_SetHashValue or Tspi_Hash_UpdateHashValue. The
       Tspi_Hash_Sign method allocates a memory block for the prgbSignature
       data. This memory must be released using Tspi_Context_FreeMemory.

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

   hKey
       Handle to the key object which should be used for the signature.

   pulSignatureLength
       Receives the length of the signature data returned at the parameter
       prgbSignature on successful completion.

   prgbSignature
       Receives a pointer to the signature data on successful completion.

RETURN CODES
       Tspi_Hash_Sign returns TSS_SUCCESS on success, otherwise one of the
       following values is returned:

       TSS_E_INVALID_HANDLE
              hKey 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.

       TSS_E_HASH_NO_IDENTIFIER
              The hash algorithm identifier is not set.

CONFORMING TO
       Tspi_Hash_Sign conforms to the Trusted Computing Group Software
       Specification version 1.1 Golden

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

TSS 1.1                           2004-05-25                 Tspi_Hash_Sign(3)