Method for preventing monitoring of data remotely sent from...

Details Method for preventing monitoring of data remotely sent from... Method for preventing monitoring of data remotely sent from...

G - Physics

07

B

G07B 17/02 (2006.01) G07B 17/00 (2006.01)

Patent

CA 2165103

The method for preventing monitoring of postage indicia data which is sent from a postage metering vault to a remotely located digital printer over a communication link between the meter vault and the digital printer. The meter is provided with an encryption engine for encrypting postage indicia data utilizing a encryption key. The digital printer includes a decryption engine for decrypting postage data received from said meter utilizing the same encryption key and then prints a postage indicia pursuant to the decrypted postage indicia data. The postage meter also includes a key manager for generating a new encryption key pursuant to a token which is either randomly generated or generated pursuant to an algorithm by a similar encryption key manager located in the digital printer which token is also used to generate the decryption key for the decryption engine. As a result the encryption keys are the same.

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