Cryptographic key management and validating system

Details Cryptographic key management and validating system Cryptographic key management and validating system

H - Electricity

04

L

H04L 9/08 (2006.01) G07B 17/00 (2006.01)

Patent

CA 2173008

A Key Management System for generating, distributing and managing cryptographic keys used by an information transaction system that employs cryptographic means to produce evidence of information integrity. The system comprises a plurality of functionally distinct secure boxes operatively coupled to each other. Each of the secure boxes performs functions for key generation, key installation, key verification or validation of tokens. Computers, operatively coupled to the secure boxes, provide system control and facilitate communication among the secure boxes. A plurality of separate logical security domains provide domain processes for key generation, key installation, key verification and validation of tokens produced by the transaction evidencing device within the domain using the key management functions. A plurality of domain archives, corresponding respectively to each of the security domains, securely and reliably record key status records and master keys for each domain. The Key Management System installs the master keys in the transaction evidencing device and validates the tokens. The secure boxes include a key generation box for generating, encrypting and signing a master key; a key installation box for receiving, verifying and decrypting the signed master key and for installing the master key into the transaction evidencing device; a key verification box for verifying the installation of the master key in the transaction evidencing device, a token verification box for verifying the tokens, and at least one manufacturing box for generating domain keys and distributing the domain keys among the secure boxes for each of the domains.

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