Abstract: A transaction evidencing system and method includes a host processor and an unsecured printer coupled to the host processor. A vault device that includes digital token generation and transaction accounting functions is operatively coupled to the host processor. The vault device generates a digital token in response to a first command from the host processor. The digital token and information relating thereto are stored in storage area in the vault and/or the host processor. The stored digital token and information relating thereto are selectively accessed for generating transaction evidencing indicia corresponding to the stored digital token. The unsecured printing structure prints the transaction evidencing indicia in response to a second command which is issued at a time subsequent to the first command. A batch of digital tokens may be generated and stored in an indexed file in the storage area before any indicia corresponding to the batch of digital tokens are generated and printed.

Abstract: A method of token verification in a Key Management System provides a logical device identifier and a master key created in a logical security domain to a transaction evidencing device, such as a digital postage meter. The method creates a master key record in a key verification box, securely stores the master key record in a Key Management System archive, and produces in the transaction evidencing device evidence in the logical security domain of transaction information integrity. The method inputs the evidence of the transaction information integrity to a token verification box, and inputs in the token verification box the master key record from the Key Management System archive.

Abstract: Solids losses and particulate catalyst losses in fluidized bed catalytic reactors using cyclone means to retain catalyst are significantly reduced by the presence of particulate inert fines.