Data processing: financial – business practice – management – or co – Business processing using cryptography – Postage metering system
Reexamination Certificate
2003-06-06
2009-11-03
Augustin, Evens J (Department: 3621)
Data processing: financial, business practice, management, or co
Business processing using cryptography
Postage metering system
C705S410000, C705S408000
Reexamination Certificate
active
07613660
ABSTRACT:
A process for evidencing postage payment begins by obtaining a destination address for a mail item and encoding it as a string of characters from which a subset of the encoded string is selected, concatenated with plain text data and then encrypted. The encrypted portion is hashed along and a digital signature is computed as part of the digital postage mark. During verification, the mail item is scanned to obtain a digital image thereof, which is parsed to identify and capture the digital postage mark and the destination address block. A recoverable portion of the DAB is extracted and the digital postage mark is parsed into a plain text area and a cryptographic validation code area. The CVC area is parsed to obtain a recoverable portion. If the recoverable portion of the DAB is within a threshold value of the recoverable portion of the CVC, then the mail item is accepted.
REFERENCES:
patent: 4649541 (1987-03-01), Lahmeyer
patent: 5835604 (1998-11-01), Lee
patent: 6175827 (2001-01-01), Cordery et al.
patent: 6209115 (2001-03-01), Truong et al.
X9.92-2002 Public Key Cryptography For The Financial Services Industry. Digital Signature Algorithms Giving Partial Message Recovery. Part 1: Elliptic Curve Pintsov-Vanstone Signatures (ECPVS).
Augustin Evens J
Chaclas Angelo N.
Cummings Michael J.
Pitney Bowes Inc.
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