Data access verification system

Details Data access verification system Data access verification system

1991-02-19

1993-08-03

Buczinski, Stephen C.

Cryptography

Particular algorithmic function encoding

Nbs/des algorithm

34082534, 380 25, H04K 100, H04K 900, G07D 700

Patent

active

052336557

ABSTRACT:
A system is provided for enabling use of a password or PIN (personal identification number) to prove authority for access to a data base, where the PIN cannot be safely transmitted to a verifying authority. The PIN is entered into a calculating circuit which produces a TPIN (translated PIN) which can be safely transmitted to the verifying authority. The TPIN has fewer digits than the PIN to avoid a one-to-one correspondence of each PIN to each TPIN. For example, a six digit PIN may yield a three digit TPIN. The present time is also entered into the calculating circuit and an algorithm for generating the TPIN uses the present time, so for a given PIN the TPIN repeatedly changes.

REFERENCES:
patent: 3794813 (1974-02-01), Spetz
patent: 4123747 (1978-10-01), Lancto
patent: 4214230 (1980-07-01), Fak et al.
patent: 4283599 (1981-08-01), Atalla
patent: 4800590 (1989-01-01), Vaughan
patent: 5022080 (1991-06-01), Durst et al.

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