Cryptography – Cryptanalysis
Patent
1998-04-08
2000-05-30
Laufer, Pinchus M.
Cryptography
Cryptanalysis
380 3, 713200, H04L 900
Patent
active
060699531
ABSTRACT:
A personal computer having a security function, a security method therefor, and methods of installing and detaching a security device are provided. In the security method, a password is dispersedly stored in the personal computer and a hard disk is booted only when the password input by a user is valid and the boot data of a security device is the same as that of the hard disk. When recording a file on a floppy disk, the file is processed with an encryption function and an encryption table. Also, the file stored in the floppy disk is read using a decoding table. Further, when installing the security device, a partition is removed so as to prevent the hard disk from being used without any security device. Therefore, the password cannot be read by an unauthorized user and the hard disk cannot be booted without any security device. Also, due to the encrypting and decoding processes, a file copied without permission cannot be read by another personal computer.
REFERENCES:
patent: 5212729 (1993-05-01), Schafer
patent: 5343525 (1994-08-01), Hung et al.
patent: 5513262 (1996-04-01), Van Rumpt et al.
patent: 5533125 (1996-07-01), Bensimon et al.
patent: 5542044 (1996-07-01), Pope
patent: 5615262 (1997-03-01), Guy et al.
Laufer Pinchus M.
Samsung Electronics Co,. Ltd
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