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 Copyright (C) 2007 International Business Machines Corporation
 Written by Tom Lendacky based on the Trusted Computing Group Software Stack Specification Version 1.2


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 "Tspi_DecodeBER_TssBlob" 3 "2007-06-12" "TSS 1.2" "TCG Software Stack Developer's Reference"
 NAME
Tspi_DecodeBER_TssBlob - unwraps a BER-encoded TSS blob. 

 "SYNOPSIS"
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 #include <tss/tspi.h>  "TSS_RESULT Tspi_DecodeBER_TssBlob(UINT32 " berBlobSize ", BYTE* " berBlob ","  " UINT32* " blobType ", UINT32* " rawBlobSize ","  " BYTE* " rawBlob ");" 

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 "DESCRIPTION"

Tspi_DecodeBER_TssBlob is used to unwrap a BER-encoded blob in accordance with the ASN.1 data definitions in the Portable Data section of the Trusted Computing Group Software Stack Specification Version 1.2.

 "PARAMETERS"


 berBlobSize
Size of the BER-encoded blob.



 berBlob
Pointer to the BER-encoded blob.



 blobType
Pointer to the type of blob being unwrapped (refer to the TSS_BLOB_TYPE_* constants).



 rawBlobSize
Pointer to the size of the rawBlob buffer. On input this parameter contains a pointer to the maximum size of the supplied rawBlob buffer. On output this parameter contains a pointer to the actual size of the unwrapped blob. On input, if this parameter points to a value of 0, then this function will return the size of the buffer required to hold the unwrapped blob without writing to the rawBlob buffer.
Note: The output data must be shorter than the BER-encoding, so berBlobSize is a useful upper limit on rawBlob buffer size.



 rawBlob
Pointer to a buffer to hold the unwrapped blob.

 "RETURN CODES"

Tspi_EncodeDER_TssBlob returns TSS_SUCCESS on success, otherwise one of the following values are returned:


 TSS_E_BAD_PARAMETER 

 TSS_E_INTERNAL_ERROR - An error occurred internal to the TSS. 
 "CONFORMING TO"



Tspi_DecodeBER_TssBlob conforms to the Trusted Computing Group Software Specification Version 1.2

 "SEE ALSO"



Tspi_DecodeBER_TssBlob(3).