Electrical computers and digital processing systems: support – Multiple computer communication using cryptography – Protection at a particular protocol layer
Patent
1997-09-11
1999-08-03
Hua, Ly V.
Electrical computers and digital processing systems: support
Multiple computer communication using cryptography
Protection at a particular protocol layer
713201, G06F 1214, H04L 900
Patent
active
059319488
ABSTRACT:
A portable computer system includes a keyboard for inputting at least a password, and a main CPU for controlling the system operation to perform a data processing. Particularly, the computer system further includes a password control section, holding one or more registered passwords as being unreadable by direct access from the main CPU, for allowing the main CPU to perform the data processing when a password identical to one of the registered passwords held therein is input by the keyboard.
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White, Fisch & Pooch, Computer System and Network Security, CKC Press 1996, at Chapters 4 and 6.
Kawawa Tatsuya
Mamata Tohru
Morisawa Toshikazu
Tsukada Hiroyuki
Yamaki Masayo
Hua Ly V.
Kabushiki Kaisha Toshiba
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