Cryptographic system and protocol for establishing secure authen

Details Cryptographic system and protocol for establishing secure authen Cryptographic system and protocol for establishing secure authen

1997-03-18

1999-09-14

Gregory, Bernarr E.

Cryptography

Particular algorithmic function encoding

Nbs/des algorithm

380 9, 380 21, 380 23, 380 29, 380 30, 380 49, H04L 932, H04L 908

Patent

active

059534249

ABSTRACT:
A cryptographic protocol establishes shared secrets such as encryption/decryption keys by exchanging public signals generated from transformations of private signals and one or more authentication factors including "what you know," "what you have" and "what you are" factors. A novel use of the authentication factors provides resistance against various types of cryptanalysis including dictionary attacks and man-in-the-middle attacks, allows detection of prior occurrences of unauthorized parties successfully masquerading as an authorized party, and provides enhanced security in cryptosystems that rely on "what you know" authentication factors such as passwords which are often weak in a cryptographic sense.

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