Tspi_DecodeBER_TssBlob(3)
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