Process for the authentication of a data processing system by an

Details Process for the authentication of a data processing system by an Process for the authentication of a data processing system by an

1993-12-15

1996-01-02

Cangialosi, Salvatore

Cryptography

Particular algorithmic function encoding

Nbs/des algorithm

380 30, H04L 930

Patent

active

054816122

ABSTRACT:
A process is provided for authentication in a data processing system using a data processing terminal having a programmable memory. The terminal supplies to a server an identify code (ID), the server checks the identify code, and in the case of agreement, supplies a random number (ALEA-A) to the terminal. The terminal encodes the random number using a signature algorithm (B) defined by a secret key (SID), and supplies a first signed random number (ALEA-S) to the server, which applies a signature checking algorithm (T, B, C) to the number (ALEA-S). The identity code and an encrypted secret key (KID) are written into the memory. The secret key (SID) used for the signature of the random number is determined using a decrypting algorithm (INVA) using the encrypted secret key (KID) and a password (MP) supplied by the terminal user. Particular utility for the present invention is found in the area of data processing, although other utilities are also contemplated.

REFERENCES:
patent: 4649233 (1987-03-01), Bass et al.
patent: 4947430 (1990-08-01), Chaum
patent: 4995082 (1991-02-01), Schnorr
patent: 5001752 (1991-03-01), Fischer
patent: 5140634 (1992-08-01), Guillou et al.
patent: 5241599 (1993-08-01), Bellovin et al.
patent: 5319710 (1994-06-01), Attalla et al.
patent: 5347580 (1994-09-01), Molua et al.
patent: 5349642 (1994-09-01), Kingdon
patent: 5363448 (1994-11-01), Koopman, Jr. et al.
patent: 5365466 (1994-11-01), Hazard

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