CD-ROM disk and security check method for the same

Details CD-ROM disk and security check method for the same CD-ROM disk and security check method for the same

1993-12-21

1994-12-06

Buczinski, Stephen C.

Cryptography

Cryptanalysis

364DIG1, 364DIG2, 3642458, 3642469, 3649694, 369 47, 380 4, 380 23, 380 25, G11B 2328, G11B 509, H04L 900

Patent

active

053717929

ABSTRACT:
A CD-ROM disk comprises an identifier region having a disk identifier recorded in and a security code region having a security code recorded in. The identifier region and the security code region are provided in one sector of a boot sector to be read when actuated. The disk identifier includes a preset identification code, and the security code includes at least a program to be executed after check of the security code, and display data for displaying a license. A security check method for a CD-ROM disk comprising the steps of reading data recorded in the boot sector of the CD-ROM disk when actuated, comparing the disk identifier read from the identifier region of the boot sector with an stored identifier to check whether or not the read disk identifier is correct, comparing the security code read from the security region of the boot sector with a stored security code to check whether or not the read security code is correct, and executing the program contained in the security code when the read disk identifier and the read security code are correct, and displaying a license based on the display data.

REFERENCES:
patent: 4442486 (1984-04-01), Mayer
patent: 4454594 (1984-06-01), Heffron et al.
patent: 4462076 (1984-07-01), Smith, III
patent: 5010571 (1991-04-01), Katznelson
patent: 5050213 (1991-09-01), Shear
patent: 5113518 (1992-05-01), Durst, Jr. et al.
patent: 5133079 (1992-07-01), Ballantyne et al.
patent: 5155768 (1992-10-01), Matsuhara
Patent Abstracts of Japan, vol. 15, No. 335 (P-1242), Aug. 26, 1991, corresponding to Japanese Publication No. JP-A-31 22 713 (Sanyo), May 24, 1991.

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