Verification method and apparatus

Details Verification method and apparatus Verification method and apparatus

1992-07-02

1993-09-14

Cain, David

Cryptography

Particular algorithmic function encoding

Nbs/des algorithm

380 23, 380 30, H04K 100

Patent

active

052456579

ABSTRACT:
A prover possessing public information and related secret information sends the public information and an initial message to a verifier. The verifier sends back a random message and an enquiry generated from the initial message and random message. The prover confirms that the enquiry has been correctly generated, then sends the verifier a response created from the enquiry and the secret information and related to the initial message. Using the initial message and public information, the verifier checks whether the response is a valid response to the enquiry. If it is, the verifier stores the public information, initial message, random message, and response as a transcript. If necessary, the transcript can be submitted to an arbitrator to establish that verification has taken place.

REFERENCES:
patent: 4193131 (1980-03-01), Lennon et al.
patent: 4748668 (1988-05-01), Adi Shamir et al.
patent: 4977595 (1990-12-01), Kazuo Ohta et al.
Eurocrypt '91 Abstracts, David Chaum & Eugene van Heyst, pp. 130-134.
Proceedings of the Twenty Second Annual ACM Symposium on Theory of Computing, "Witness Indistinquishable & Witness Hiding Protoco".

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