Data processing: financial – business practice – management – or co – Business processing using cryptography – Postage metering system
Reexamination Certificate
2008-09-26
2011-10-25
Fischer, Andrew J. (Department: 3621)
Data processing: financial, business practice, management, or co
Business processing using cryptography
Postage metering system
C705S060000, C705S408000
Reexamination Certificate
active
08046304
ABSTRACT:
In a franking method and a mail transport system, a franking image is calculated before generation thereof on a mail piece. The franking image includes a franking image key, and for each new franking image, the franking image key therefor is derived from a predecessor franking image key according to a first crypto-algorithm. An integrity check code is also generated based on the new franking image key, a key generation number, an apparatus identifier of the franking device, and a second crypto-algorithm. The franking image includes at least the device identifier, the key generation number and the integrity check code. Upon transport of the mail piece to a sorting center, the franking image is scanned and fees for billing are generated based thereon.
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Fischer Andrew J.
Francotyp-Postalia GmbH
McIntyre C. Aaron
Schiff & Hardin LLP
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