oracular (3) Tspi_Data_Unseal.3.gz

Provided by: libtspi-dev_0.3.15-0.4_amd64 bug

NAME
       Tspi_Data_Unseal  -  dencrypt  data  encrypted  by  Tspi_Data_Seal() only if it was encrypted on the same
       platform and under the current configuration.


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_Data_Unseal(TSS_HENCDATA hEncData,              TSS_HKEY hKey,
                                   UINT32       pulUnsealedDataLength, BYTE**   prgbUnsealedData);


DESCRIPTION
       Tspi_Data_Unseal reveals data encrypted by the Tspi_Data_Seal only  if  it  was  encrypted  on  the  same
       platform and the current configuration. This is internally proofed and guaranteed by the TPM.


PARAMETERS
   hEncData
       Handle of the data object which contains the sealed data.

   hKey
       Handle to the key object addressing the nonmigratable key which is used to decrypt the data.

   pulUnsealedDataLength
       The length (in bytes) of the prgbUnsealedData parameter.

   prgbUnsealedData
       On successful completion of the command, this parameter points to a buffer containing the plaintext data.

   hPcrComposite
       Handle  of  the  PCR  Composite object specifying the PCRs which are part of the sealed data blob. Set to
       NULL, if the encrypted data should only be bound to the system and PCRs are not of interest.


RETURN CODES
       Tspi_Data_Unseal returns TSS_SUCCESS on success, otherwise one of the following values are returned:

       TSS_E_INVALID_HANDLE - Either hEncData or hKey is not a valid handle.

       TSS_E_INTERNAL_ERROR - An error occurred internal to the TSS.


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


SEE ALSO
       Tspi_Data_Seal(3).