Electronic authentication system

Details Electronic authentication system Electronic authentication system

1997-02-20

1999-11-16

Gregory, Bernarr E.

Cryptography

Particular algorithmic function encoding

Nbs/des algorithm

380 9, 380 23, 380 30, 380 49, H04L 932, H04L 930, H04L 900

Patent

active

059871334

ABSTRACT:
As a public key, a character string which can be easily reasoned by a person, e.g., a character string obtained by adding a specific character string, e.g., "?", of which code is an odd number to the end of a name, is used. A signature given to a document to be sent is encrypted by using a secret key generated from the public key, and the encrypted signature is sent together with a plaintext document. On the reception side, the encrypted signature is decrypted by using a public key obtained by adding a character string, "?" in this case, whose code is an odd number to the end of the name of the sender. The decrypted signature is compared with a signature included in the plaintext document, so that authentication can be performed. Since the public key need not be stored in an electronic dictionary file or the like, illegal authentication is not easily established by falsifying the public key in the electronic dictionary file.

REFERENCES:
patent: 4868877 (1989-09-01), Fischer
patent: 4893338 (1990-01-01), Pastor
patent: 5016274 (1991-05-01), Micali et al.
patent: 5506905 (1996-04-01), Markowski et al.
patent: 5537475 (1996-07-01), Micali

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