Information storage medium and security method thereof

Details Information storage medium and security method thereof Information storage medium and security method thereof

1997-11-25

2000-12-05

Swann, Tod R

Electrical computers and digital processing systems: support

Multiple computer communication using cryptography

Protection at a particular protocol layer

705 51, 705 57, 705 58, 713162, 713165, 713168, 713166, 380287, 380 28, G06F 1130

Patent

active

06158004&

ABSTRACT:
A security system for an information storage medium is so structured that only file data including secret individual information is encrypted by an encryptor/decryptor circuit. Known file management data is written in a memory device in plain text. This encrypting device prevents any third person from reading the secret information without unnecessary encryption of non-secret data to realize an enhanced security function.

REFERENCES:
patent: 5068894 (1991-11-01), Hoppe
patent: 5124117 (1992-06-01), Tatebayashi et al.
patent: 5204663 (1993-04-01), Lee
patent: 5623637 (1997-04-01), Jones et al.

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