Tspi_Hash_Sign - Man Page
sign the hash data of an object with a signing key
TCG Software Stack Developer's Reference
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).
Referenced By
Tspi_Hash_GetHashValue(3), Tspi_Hash_SetHashValue(3), Tspi_Hash_UpdateHashValue(3), Tspi_Hash_VerifySignature(3).