Resources Contact Us Home Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE     Method for verifying the expected postage security device and an authorized host system Image Number 7 for United States Patent #6397328. A method for verifying that the expected components of a postage metering system includes alternate embodiments for verifying a PSD coupled to a host system is the expected PSD. The method further includes verifying the host system as the expected host system. A first message is encrypted in the PSD using a first cryptographic key to obtain a first encrypted message. The first encrypted message is sent to the host system which decrypts the first encrypted message using a second cryptographic key. The host system then encrypts a second message derived from the decrypted first encrypted message using the second cryptographic key. The host system then sends the encrypted second message to the PSD which decrypts the second encrypted message in the PSD using the first cryptographic key. The PSD compares the decrypted second encrypted message with the first message, and activates the PSD for processing transactions requested by the host system when the decrypted second encrypted message corresponds to the first message.       Recently Added Patents Through via connected backside embedded circuit features structure and method Compositions comprising surfactants and alkyloxy-modified silicone Method and system for unified audio control on a personal computer Book with card inserts Capacitance element, printed circuit board, semiconductor package, and semiconductor circuit Structure of compstatin-C3 complex and use for rational drug design Glass manufacturing device   Randomly Featured Patents Method for producing polysulfide by electrolytic oxidation Safety mold lift lock Bonding of solid lignocellulosic material Phosphorus-containing squalene synthetase inhibitors, new intermediates and method Electronic slide ruler calculator Reed-type discharge valve arrangement for a hermetic compressor Combination tip wrench and stand Tension testing anchor lock Tool box Apparatus, method and system for selectively coupling a LAN controller to a platform management controller © 2006-2008 PatentGenius. All Rights Reserved.