Apparatus and storage medium for decrypting information

Details Apparatus and storage medium for decrypting information Apparatus and storage medium for decrypting information

1994-02-18

1997-08-26

Cain, David C.

Cryptography

Cryptanalysis

380 23, 380 25, 380 52, H04L 900

Patent

active

056617992

ABSTRACT:
A system including a storage medium containing encrypted information comprises: (a) a control unit for selecting information to be retrieved from the storage medium; (b) a storage medium reader for reading the selected information from the storage medium; and (c) a decryption device for decrypting at least portions of the selected information using a decryption key. The decryption key is defined, at least in part, by rules and/or data which are read from the storage medium by the storage medium reader. A different and unique key is associated with each separate item or file of encrypted information.

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patent: 5440631 (1995-08-01), Akiyama et al.
patent: 5457746 (1995-10-01), Dolphin

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