Tspi_EncodeDER_TssBlob(3)
NAME
Tspi_EncodeDER_TssBlob - generate a DER encoded TSS blob.
SYNOPSIS
#include <tss/tspi.h> TSS_RESULT Tspi_EncodeDER_TssBlob(UINT32 rawBlobSize, BYTE* rawBlob, UINT32 blobType, UINT32* derBlobSize, BYTE* derBlob);
DESCRIPTION
Tspi_EncodeDER_TssBlob is used to generate a DER-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
- rawBlobSize
- Size of the unwrapped blob.
- rawBlob
- Pointer to the unwrapped blob.
- blobType
- Type of blob being wrapped (refer to the TSS_BLOB_TYPE_* constants).
- derBlobSize
- Pointer to the size of the derBlob buffer. On input this parameter contains a pointer to the maximum size of the supplied derBlob buffer. On output this parameter contains a pointer to the actual size of the DER-encoded 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 DER-encoded blob without writing to the derBlob buffer.
- Note: If the raw data blob length is less than 2^16 bytes then the DERencoding may add no more than 20 bytes.
- derBlob
- Pointer to a buffer to hold the DER-encoded 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_EncodeDER_TssBlob conforms to the Trusted Computing Group Software
Specification Version 1.2