Method and apparatus for authenticating accreditations and for a

Details Method and apparatus for authenticating accreditations and for a Method and apparatus for authenticating accreditations and for a

1991-10-09

1992-08-18

Buczinski, Stephen C.

Cryptography

Particular algorithmic function encoding

Nbs/des algorithm

380 24, 380 25, 380 30, 235382, H04K 100, H04K 900

Patent

active

051406349

ABSTRACT:
A method and system for authentication of accreditations and of messages with zero-knowledge proof and for the signing of messages, and a station for use in such system, in particular executed as a smart card station.
Instead of using multiple accreditations and an iterative process of verification, use is made of a comprehensve accreditation (high exponent p) and a number D is drawn at random, which number is within the range between 0 and p-1. The operations of verifiction proceed by the computation of the D-th power of the inverse accreditation B.
Application in particular, to smart cards and, more specifically, to bank cards.

REFERENCES:
patent: 4200770 (1980-04-01), Hellman et al.
patent: 4295039 (1981-10-01), Stuckert
patent: 4351982 (1982-09-01), Miller et al.
patent: 4638120 (1987-01-01), Herve
patent: 4736423 (1988-04-01), Matyas
patent: 4799258 (1989-01-01), Davies
patent: 4811393 (1989-03-01), Hazard

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