DER encode this object onto an output stream. Implements the <code>DerEncoder</code> interface.
@param outputStream the output stream on which to write the DER encoding.
@exception IOException on encoding error.
See Implementation
DER encode this object onto an output stream. Implements the <code>DerEncoder</code> interface.
@param outputStream the output stream on which to write the DER encoding.
@exception IOException on encoding error.