Device for the protection of the access to memory words

Details Device for the protection of the access to memory words Device for the protection of the access to memory words

1995-12-18

1999-11-02

Beausoliel, Jr., Robert W.

Electrical computers and digital processing systems: support

Multiple computer communication using cryptography

Protection at a particular protocol layer

711152, 711163, 365195, G06F 1100, G11C 1700

Patent

active

059789158

ABSTRACT:
The access to memory words of an integrated circuit is protected by the creation of a decision table that receives addresses of instruction words and/or data words to be protected and that receives also addresses of the control bits of a control word assigned to a word to be protected. It can be shown that this mode of action provides greater security through the use of a decision table made in wired circuit form as well as greater flexibility through the programmable quality of the control words assigned to each memory word to be controlled.

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IBM Technical Disclosure, vol. 15, No. 12, May 1973.

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