Method and device for encrypting a message

Details Method and device for encrypting a message Method and device for encrypting a message

2001-06-07

2008-11-25

Vu, Kimyen (Department: 2135)

Cryptography

Key management

Having particular key generator

C380S258000, C380S044000, C382S314000, C358S478000

Reexamination Certificate

active

07457413

ABSTRACT:
A method and a corresponding device for generating true random numbers for use in encryption of a message for secure transmission of said message from a sending device to a receiver, or for authentication of a sent message. An optical image represented by optical data is obtained by an optical sensor and processed in order to improve the stochasticity of the optical data. The thus processed data is then used for generating random numbers which can be used as an encryption key, or for generating an encryption key, for subsequent use in an encryption algorithm for encrypting the message. The method is implemented in a digital pen (DP) to be used in an information management system.

REFERENCES:
patent: 4776013 (1988-10-01), Kafri et al.
patent: 5371794 (1994-12-01), Diffie et al.
patent: 5661506 (1997-08-01), Lazzouni et al.
patent: 5696828 (1997-12-01), Koopman, Jr.
patent: 5732138 (1998-03-01), Noll et al.
patent: 5832091 (1998-11-01), Tomko et al.
patent: 5850443 (1998-12-01), Oorschot et al.
patent: 5852434 (1998-12-01), Sekendur
patent: 5930377 (1999-07-01), Powell et al.
patent: 6026165 (2000-02-01), Marino et al.
patent: 6738053 (2004-05-01), Borgstrom et al.
patent: 199 07 600 (2000-08-01), None
patent: 0 984 390 (2000-03-01), None
patent: 9-83512 (1997-03-01), None
patent: WO 98/40982 (1998-09-01), None
patent: WO 01/16691 (2001-03-01), None
patent: WO 01/48591 (2001-07-01), None
patent: WO 01/48678 (2001-07-01), None
patent: WO 01/48685 (2001-07-01), None
Schneier, Applied Cryptography, 1996, John Wiley & Sons Inc. 2nd Edition pp. 4, 424, 175, 424, 367.
Schneier, Applied Cryptography, 1996, John Wiley, 2ndEdition, pp. 425.
Jain et al., Biometric Identification, 2000, Communications of the ACM, pp. 91-98.
Schneier, Applied Cryptography, 1996, John Wiley & Sons, Second Edition, pp. 1, 175, 4, 424.
Sasaki, et al. “Stream cipher based on pseudorandom number generation with optical affine transformation”; Applied Optics; vol. 39, No. 14; May 10, 2000; pp. 2340-2346.
Dymetman, Marc and Max Copperman, “Intelligent Paper”, Xerox Research Centre Europe, pp. 392-406, XP-002328425.

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