Resilient cryptographic scheme
AssigneeCerticom Corp.
InventorsDonald B. Johnson, Scott A. Vanstone
Life of this patent
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Abstract
A method for communicating information between at least a pair of correspondents, the method comprising the steps of each of the correspondents selecting a plurality of cryptographic algorithms known to each of the correspondents. One of the correspondents applies the algorithms in a predetermined manner lo a message for producing a set of processed information. The set of processed information is transmitted to the other correspondent. The other correspondent applies complimentary operations of the cryptographic schemes in accordance with the predetermined manner for deriving information related to the message from the processed information.
Claims10
A method for communicating information between at least a first and a second correspondent, said method comprising the steps of:
- a) selecting a plurality of cryptographic algorithms known to said first and second correspondents;
- b) said first correspondent applying each of said selected cryptographic algorithms to a common message in a predetermined manner for producing a set of processed information;
- c) transmitting said set of processed information to said second correspondent;
- and
- d) said second correspondent applying complimentary operations of each of said selected cryptographic algorithms in accordance with said predetermined manner for deriving information related to said common message from said set of processed information.
A method for transporting a key K between at least a first and a second correspondent said method comprising the steps of:
- a) selecting key components k1, k2, . . . kn
- b) applying to each of said key components one of a set of encryption algorithms, A1, A2 . . . An, to provide encrypted key components E1, E2, . . . En
- c) transmitting said encrypted key components to said other correspondent,
- d) applying a complimentary decryption algorithm to said encrypted key components to provide a decrypted key component and
- e) combining said decrypted key components to derive a key K.
Dependencies are inferred from the claim text.