Method and system to secure the transmission of data elements be

Details Method and system to secure the transmission of data elements be Method and system to secure the transmission of data elements be

1996-05-01

1999-04-27

Gregory, Bernarr E.

Cryptography

Key management

Having particular key generator

380 9, 380 23, 380 25, 380 46, 380 28, 380 59, H04L 900

Patent

active

058987827

ABSTRACT:
Disclosed are a method and a system for the securing of the transmission of data elements between a sensor delivering pulses and a recorder processing these pulses. This method and system are applicable especially to a chronotachograph for heavy road vehicles. The principle of the disclosed method relies on a permanent exchange of enciphered data elements between a recorder module comprising the recorder and a sensor module comprising the sensor. The exchange is done at the initiative of the recorder module code C to the sensor module. The sensor module acknowledges the command either in order to indicate the acknowledgement of the command or to transmit pulses from the sensor with a view to their processing by the recorder. The recorder module then deciphers and verifies the return messages (M.sub.R) firstly to check the coherence of these messages and secondly to restore the transmitted pulses to the recorder. The disclosed method and system enable the detection and recording of any attempt to falsify the link between the sensor and the recorder.

REFERENCES:
patent: 5321753 (1994-06-01), Gritton
patent: 5497419 (1996-03-01), Hill
Eascon '79--Proceedings of IEEE Electronics and Aerospace Systems Convention, Arlington (US), Sep. 25-27, 1978 New York (US), pp. 661-662, G.J. Simmons "Message Authentication Without Secrecy: A Secure Communications Problem Uniquely Solvable by Asymmetric Encryption Techniques."
Proceedings of 1990 International Carnahan Conference on Security Technology: Crime Countermeasures, Lexington (US), Oct. 10-12, 1990 New York (US), pp. 29-32, L. Cooke "Sensor Technology and Signal Analysis: High Security Encryption Supervision."

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