Data processing: financial – business practice – management – or co – Business processing using cryptography – Postage metering system
Reexamination Certificate
2005-08-30
2005-08-30
Trammell, James P. (Department: 3621)
Data processing: financial, business practice, management, or co
Business processing using cryptography
Postage metering system
C705S039000, C705S041000, C713S176000, C707S793000
Reexamination Certificate
active
06938016
ABSTRACT:
A system and corresponding method for enabling the use of digital postage or, more generally, digital coin. The system includes, in the case of enabling digital postage, a digital postage generator, responsive to a request for digital postage, and further responsive to an initial pointer value, for providing a supply of digital postage, and further for providing verifying data for use in verifying portions of the digital postage when imprinted on mailpieces, wherein the digital postage is based on a random sequence of bits, wherein the digital postage generator includes a bitstream generator for providing a random sequence of bits associated with the initial pointer value, and also includes a digital postage manager for providing as the digital postage the random sequence of bits and the initial pointer value, and for providing as verifying data information indicating at least a portion of the random sequence of bits. In some applications, the information indicating at least a portion of the random sequence of bits includes the initial pointer value and the random sequence of bits. Also in some applications, the digital postage generator is further responsive to a key value and the bitstream generator provides the random sequence of bits based on the key value and the initial pointer value, and the information indicating at least a portion of the random sequence of bits includes the key value and the initial pointer value.
REFERENCES:
patent: 5696829 (1997-12-01), Cordery et al.
patent: 5781438 (1998-07-01), Lee et al.
patent: 6341273 (2002-01-01), Briscoe
patent: 6424954 (2002-07-01), Leon
Chaclas Angelo N.
Lemm Brian A.
Pitney Bowes Inc.
Trammell James P.
Winter John M
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