Data processing: financial – business practice – management – or co – Business processing using cryptography – Postage metering system
Patent
1997-11-19
2000-03-21
Voeltz, Emanuel Todd
Data processing: financial, business practice, management, or co
Business processing using cryptography
Postage metering system
705401, G06F 1700
Patent
active
060413174
ABSTRACT:
In accordance with the present invention, there is provided a greatly improved Postal Security Device (PSD) incorporating periodic and automatic self implementation of a public/private key pair. According to the invention, it is provided that the appropriate resources are contained in a PSD, thereby permitting the PSD generate a new set of public/private key pairs as required to change the secure cryptographic identity of the PSD. Such generation may occur in response to an arbitrary criterion, such as a request, a change in usage patterns, the amount spent, and/or the number of pieces processed. The number of key pair generations may be limited to a predetermined maximum. The appropriate authorities are then notified of the new PSD Public key. The new PSD key pair is used upon receipt of the appropriate certificate from the Certification Authority.
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Ascom Hasler Mailing Systems Inc.
Dixon Thomas A.
Todd Voeltz Emanuel
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