#NEWLINE# def load_der_private_key( self , data , password ) : #NEWLINE# #INDENT# for b in self . _filtered_backends ( DERSerializationBackend ) : #NEWLINE# #INDENT# return b . load_der_private_key ( self , password ) #NEWLINE# #UNINDENT# raise UnsupportedAlgorithm ( 'This backend does not support this key serialization.' , _Reasons . UNSUPPORTED_SERIALIZATION )