Cryptography
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The Enigma cryptographic machine. |
My Pages:
The focus of my work has been on cost vs. security tradeoffs for
ultra-low cost cryptography and security systems, primarily for automotive
applications.
- US Patent
#5,991,673;
Vehicle anti-theft system including vehicle identification numbers programmed
into on-board computers; Koopman & Carroll, November 23, 1999.
- US Patent
#5,952,937;
System and method of updating communications in a security system; Koopman,
Carroll, Grzybowski, Marshall, September 14, 1999.
- US Patent
#5,940,002;Security
system with random number remote communication; Finn, Koopman & Carroll,
August 17, 1999.
- US Patent
#5,757,923;
Method of generating secret identification numbers; Koopman, May 26, 1998.
- US Patent
#5,696,828;
Random number generating system and process based on chaos; Koopman, Dec. 9,
1997.
- US Patent
#5,649,014;
Pseudorandom composition-based cryptographic authentication process; Koopman,
Finn & LaBarre, July 15, 1997
- US Patent
#5,619,575;
Pseudorandom composition-based cryptographic authentication process; Koopman,
Finn & LaBarre, Apr. 8, 1997
- US Patent
#5,598,476;
Random clock composition-based cryptographic authentication process and locking
system; LaBarre & Koopman, Jan. 28, 1997
- US Patent #5,398,284;
Cryptographic Encoding Process; Koopman & Finn, Nov. 5, 1993
- US Patent #5,377,270;
Cryptographic Authentication of Transmitted Messages Using Pseudorandom
Numbers; Koopman & Finn, Jun. 30, 1993
- US Patent #5,363,448;
Pseudorandom Number Generation and Cryptographic Authentication; Koopman &
Finn, Jun. 30, 1993
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