METHOD AND APPARATUS FOR THE ENCRYPTION OF DATA

Title:

METHOD AND APPARATUS FOR THE ENCRYPTION OF DATA

Document Type and Number:

WIPO Patent Application WO2003032300

Kind Code:

A3

Abstract:

There is disclosed a method and apparatus for coding data, for the purpose of preventing unauthorised readout of information. In the method, user information is converted into digital data (UD), and the digital data is recorded in a first data set (CD) and a second data set (HD), where the first data set (CD) is recorded in a first optical storage medium of a data carrier, and the second data set (HD),is recorded in a second, holographic storage medium of the data carrier. According to the method, the digital data (UD) is divided between the first and second data sets (CD,HD) in a manner so that a part of the user information is contained only in the first data set (CD), and another part of the user information is contained only in the second data set (HD), and the relative proportion of the user information in the data sets is selected so that the information contained in any one of the data sets is insufficient by itself to restore the complete user information (UD) contained in both data sets.

More Like This:

WO/1997/011442	METHOD FOR DETERMINING AN ENCRYPTION KEY ASSOCIATED WITH AN INTEGRATED CIRCUIT
JPH06119078	COMPUTER ACCESS CONTROL SYSTEM

Inventors:

DOMJAN LASZLO (HU)
ERDEI GABOR (HU)
KOPPA PAL (HU)
SZARVAS GABOR (HU)
TOTH PETER (SE)
UJVARI TAMAS (HU)

Application Number:

PCT/HU2002/000104

Publication Date:

December 31, 2003

Filing Date:

October 09, 2002

Export Citation:

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Assignee:

OPTILINK AB (SE)
DOMJAN LASZLO (HU)
ERDEI GABOR (HU)
KOPPA PAL (HU)
SZARVAS GABOR (HU)
TOTH PETER (SE)
UJVARI TAMAS (HU)

International Classes:

G06F12/14; G09C5/00; G11B7/004; G11B7/0065; G11B7/007; G11B7/135; G11B7/24038; G11B11/00; G11B20/00; G11B20/10; G11B23/28; G11B; (IPC1-7): G11B7/007; G11B7/0065; G11B7/24; G11B23/28; G11B20/00

Foreign References:

EP1065658A1	2001-01-03
US5841861A	1998-11-24
EP0890948A1	1999-01-13
EP0751517A2	1997-01-02

Other References:

PATENT ABSTRACTS OF JAPAN vol. 1999, no. 08 30 June 1999 (1999-06-30)

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