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 defini‐
       tions 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  re‐
       turned:

       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)