Copyright (C) 2004 International Business Machines Corporation
Written by Megan Schneider based on the Trusted Computing Group Software Stack Specification Version 1.1 Golden

\\$1

.. ..

..

1 TCG Software Stack Developer's Reference

Tspi_Hash_GetHashValue - get the current hash value of a hash object

 #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 ");" 

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.

The handle to the hash object instance whose hash value should be signed. Receives the length of the hash value data returned at the parameter prgbHashValue. Receives a pointer to the hash value data.

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.

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

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