Method and system for establishing a cryptographic key agreement

Details Method and system for establishing a cryptographic key agreement Method and system for establishing a cryptographic key agreement

1996-12-06

1999-10-12

Cain, David

Cryptography

Particular algorithmic function encoding

Nbs/des algorithm

380 44, 380 28, H04K 100

Patent

active

059664444

ABSTRACT:
A method for establishing key agreement between two communicating parties using a general linear protocol in finite and infinite dimensional spaces. Two topological linear spaces, in particular Euclidean spaces, and a non-trivial degenerate linear operator are selected. Each party respectively selects a secret element, and exchanges with the other party an image under the transformation of a matrix. Key agreement is therefore mutually established between the two communicating parties having the same cryptographic key. Various illustrative embodiments of the general linear operator are disclosed, including a rectangular matrix, a square matrix, a symmetric matrix, a skew symmetric matrix, an upper triangular square matrix, a lower triangular square matrix, a special type of skew symmetric matrix to generate a modified cross product protocol, a series of matrices to generate a sequential key protocol, and a combination of circulant matrices.

REFERENCES:
patent: 3798359 (1974-03-01), Feistel
patent: 3798360 (1974-03-01), Feistel
patent: 3798605 (1974-03-01), Feistel
patent: 4200770 (1980-04-01), Hellman et al.
patent: 4218582 (1980-08-01), Hellman et al.
patent: 4405829 (1983-09-01), Rivest et al.
patent: 4625076 (1986-11-01), Okamoto et al.
patent: 4748668 (1988-05-01), Shamir et al.
patent: 4850019 (1989-07-01), Shimizu et al.
patent: 4995082 (1991-02-01), Schnorr
patent: 5003596 (1991-03-01), Wood
patent: 5541994 (1996-07-01), Tomko et al.
patent: 5625692 (1997-04-01), Herzberg et al.
patent: 5734720 (1998-03-01), Salganicoff
patent: 5758257 (1998-05-01), Herz et al.
"New Directions in Cryptography", Whitfield Diffie, etc., IEEE Transactions on Information Theory, vol. IT-22, No. 6, Nov., 1976, pp. 644-654.

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