Tspi_EncodeDER_TssBlob(3) TCG Software Stack Developer's Reference

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
DER-encoding 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

SEE ALSO

Tspi_DecodeBER_TssBlob(3).


TSS 1.2 2007-06-12 Tspi_EncodeDER_TssBlob(3)