Cryptography – Electric signal modification – Having production of printed copy
Patent
1995-12-27
1999-07-13
Patel, Harshad
Cryptography
Electric signal modification
Having production of printed copy
380 21, G09C 308, H04L 900
Patent
active
059237627
ABSTRACT:
A method for ensuring for each postage transaction in a postage meter having a vault subsystem and a printing subsystem that debiting occurs prior to printing of a postal indicia includes authenticating the postage transaction as being valid, performing debiting within the vault subsytem, sending an encrypted debit certificate from the vault subsystem to the printing subsytem, independently recreating the encrypted debit certificate in the printing subsystem, comparing the encrypted debit certificate to the recreated encrypted debit certificate to ascertain if a predetermined relationship exists therebetween, and initiating printing of the postal indicia only upon determination of the existence of the predetermined relationship. An apparatus incorporates the method.
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Dolan Donald T.
French Dale A.
Lawton Kathryn V.
Clark Robin
Patel Harshad
Pitney Bowes Inc.
Scolnick Melvin J.
Shapiro Steven J.
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