NAME
Tspi_DecodeBER_TssBlob - unwraps a BER-encoded TSS blob.
SYNOPSIS
#include <tss/tspi.h>
TSS_RESULT Tspi_DecodeBER_TssBlob(UINT32 berBlobSize, BYTE* berBlob,
UINT32* blobType, UINT32* rawBlobSize,
BYTE* rawBlob);
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).