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

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1 TCG Software Stack Developer's Reference

Tspi_Data_Unbind - Decrypts data that has been bound to a key

 #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_Data_Unbind(TSS_HENCDATA " hEncData ", TSS_HKEY " hEncKey ","  " UINT32* " pulUnboundDataLength ", BYTE** " prgbUnboundData ");" 

Tspi_Data_Unbind decrypts the encrypted data blob exportedfrom the data object used in Tspi_Data_Bind. The encrypted data blob must be imported to the object addressed by Tspi_SetAttribData before calling this method.

The handle of the data object which contains the encrypted data. Handle to the key object addressing the private key which is used to decrypt the data. Receives the length of the data at the parameter prgbUnboundData. Receives a pointer to a buffer containing the plaintext data.

Tspi_Data_Unbind returns TSS_SUCCESS on success, otherwise one of the following values is returned:

TSS_E_INVALID_HANDLE hEncData or hEncKey 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_INVALID_ENCSCHEME Invalid encryption scheme.

TSS_E_ENC_INVALID_LENGTH Invalid length of data to be encypted.

TSS_E_ENC_NO_DATA No data to encrypt.

TSS_E_ENC_INVALID_TYPE Invalid encryption type.

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

Tspi_Data_Bind(3), Tspi_Data_Unseal(3), Tspi_Data_Seal(3).