Cryptography – Particular algorithmic function encoding – Nbs/des algorithm
Patent
1983-02-14
1988-02-02
Cangialosi, Salvatore
Cryptography
Particular algorithmic function encoding
Nbs/des algorithm
380 23, 380 30, 380 28, H04L 900
Patent
active
047232846
ABSTRACT:
The present invention is directed to a hardware authentication system for a public key communications network. The public key network includes at least one user terminal and at least one hardware authentication terminal coupled by a communications medium. The authentication terminal generates and stores a plaintext message M, and generates from this message M a ciphertext message C by transforming the plaintext message M with the public key of the user terminal. The authentication terminal is further adapted to transmit the ciphertext message C by way of the medium to the user terminal.
The user terminal is adapted to receive the enciphered or ciphertext message C from the hardware authentication terminal, and transform that ciphertext message with its private key to obtain a plaintext message M'. The user terminal is further adapted to transmit the plaintext message M' by way of the medium to the authentication terminal.
The authentication terminal also is adapted to receive the plaintext message M' from the user terminal and compare that received plaintext message M' with the stored plaintext message M. Upon identifying that the messages M and M' match., the authentication terminal generates an authentic user signal indicating that the user terminal is the hardware terminal associated with the public key.
In some forms of the invention, the authentication terminal also, or alternatively, may authenticate whether or not a remote terminal includes a digital computer operating under the control of a specific software program.
REFERENCES:
patent: 3764742 (1973-10-01), Abbott et al.
patent: 3971916 (1976-07-01), Moreno
patent: 4161038 (1979-07-01), Wu
patent: 4193061 (1980-03-01), Zoltai
patent: 4193131 (1980-03-01), Lennon et al.
patent: 4223403 (1980-09-01), Konheim
patent: 4306111 (1981-12-01), Lu et al.
patent: 4310720 (1982-01-01), Check, Jr.
patent: 4314097 (1982-02-01), Campbell
patent: 4317957 (1982-03-01), Sendrow
patent: 4326098 (1982-04-01), Bouricius
patent: 4349695 (1982-09-01), Morgan et al.
patent: 4438824 (1984-03-01), Mueller-Schloer
patent: 4446519 (1984-05-01), Thomas
patent: 4453074 (1984-06-01), Weinstein
patent: 4458315 (1984-07-01), Vchenick
patent: 4471163 (1984-09-01), Donald et al.
"Subscriber-Owned Terminals PRC Interface Specifications" by PRC.
Diffie, W. and Hellman, M. E. "New Directions in Cryptography" IEEE Transactions on Information Theory, IT-22, 6 (Nov. 1976), p. 644.
Rivest, Roho, Shamir, A., Adelman, L. "A Method for Obtaining Digital Signatures and Public Key Crypto-Systems", Comm. ACM., vol. 21, No. 2 (Feb. 1978).
Scientific American, (Aug. 1982), pp. 67B, 68.
Chapin Steven E.
Munck Robert G.
Cangialosi Salvatore
Lewis Aaron J.
Prime Computer Inc.
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