Cryptography – Particular algorithmic function encoding – Nbs/des algorithm
Patent
1993-12-09
1996-01-02
Cangialosi, Salvatore
Cryptography
Particular algorithmic function encoding
Nbs/des algorithm
380 23, 380 49, H04L 922
Patent
active
054816114
ABSTRACT:
A cryptography-based entity authentication device (EAD) operated by a remote entity located at a subscriber site enables a telephone switch or computer system to identify and verify the authenticity of the entity. In one embodiment, the EAD encrypts a random digital sequence transmitted by a host facility and returns the encrypted signal to the host for comparison with another encryption signal generated locally by the host. If a match is detected, this serves as confirmation that the remote entity possesses the same encryption key as the host, therefore verifying the authenticity of the remote entity. Otherwise, the entity is deemed fraudulent and access is denied. In another embodiment, the host and subscriber site each include a respective time generation means which are maintained in relative time synchronicity. The EAD generates and encrypts a time signal for comparison with another encrypted time signal generated locally by the host. Transmissions between the host and subscriber site occur in a DTMF signal format to ensure compatibility with existing PSTN media.
REFERENCES:
patent: 4178476 (1979-12-01), Frost
patent: 4193131 (1980-03-01), Lennon et al.
patent: 4612413 (1986-09-01), Roberts et al.
patent: 4665396 (1987-05-01), Dielman
patent: 4720859 (1988-01-01), Aaro et al.
patent: 4720860 (1988-01-01), Weiss
patent: 4833701 (1989-05-01), Comroe et al.
patent: 4856062 (1989-08-01), Weiss
patent: 4885778 (1989-11-01), Weiss
patent: 4956863 (1990-09-01), Goss
patent: 4998279 (1991-03-01), Weiss
patent: 5023908 (1991-06-01), Weiss
patent: 5058161 (1991-10-01), Weiss
patent: 5097505 (1992-03-01), Weiss
patent: 5168520 (1992-12-01), Weiss
patent: 5237612 (1993-08-01), Raith
patent: 5237614 (1993-08-01), Weiss
patent: 5241598 (1993-08-01), Raith
patent: 5249230 (1993-09-01), Mihm, Jr. et al.
Weiss, K. P., "To Serve and Protect: Reconciling Information Resource Protection with LAN Environments" Technical Support, Jan. 1992.
Security Dynamics ACE/Server product brochure, "Undefeatable Security for TCP/IP Network Environments" (1993).
Security Dynamics ACM/100 product brochure, "Access Control for Single-Line Dial-in Security" (1993).
Security Dynamics ACM/400 product brochure, "Access Control for Decentralized or Departmental Computing Environments" (1990).
Security Dynamics ACM/1600 product brochure, "Undefeatable Security for Centralized or Departmental Computing Environments" (1992).
Security Dynamics ACE System brochure, "Total Access Security" (1988).
Security Dynamics, Inc. ACE/Server Fact Sheet (1993).
Security Dynamics ACE/SERVER Question and Answer Sheets--Backgrounder (1993).
Mobile Phone News, "TRW's Phoneprint Added to Cellular's Anti-Fraud Arsenal", vol. 11, No. 41, Oct. 25, 1993.
Davis Alvah B.
Jueneman Robert R.
Owens Leslie D.
Worrest Ralph
Cangialosi Salvatore
GTE Laboratories Incorporated
Lohmann, III Victor F.
Monks Lawrence E.
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