Method for certifying public keys used to sign postal...

Details Method for certifying public keys used to sign postal... Method for certifying public keys used to sign postal...

H - Electricity

04

L

H04L 9/30 (2006.01) G07B 17/00 (2006.01) H04L 9/32 (2006.01)

Patent

CA 2303542

A method for certifying the public key of a digital postage meter using a public key encryption system by a certifying authority. A certifying station and a user station, or a digital postage meter, exchange information and the user station and downloads, or the meter derives, a public key from the exchanged information. The certifying station also publishes related information and its public key. A third party can derive the public key corresponding to the meter's private key by operating on the published information with the certifying station public key.

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