Device and method for scrambling data by means of address lines

Details Device and method for scrambling data by means of address lines Device and method for scrambling data by means of address lines

2008-07-08

2008-07-08

Peeso, Thomas R (Department: 2132)

Electrical computers and digital processing systems: support

Multiple computer communication using cryptography

Having particular address related cryptography

C713S168000, C713S190000

Reexamination Certificate

active

07398387

ABSTRACT:
A device and method for scrambling data by means of address lines is disclosed, which includes a seed generator, a first parameter generator, a data scrambler and a de-scrambler. The seed generator is connected to an address bus for generating a seed in accordance with a specific address on the address bus. The first parameter generator is connected to the seed generator for generating a first parameter based on the seed. The data scrambler is connected to a data bus for scrambling data based on the first parameter when a CPU core is to write the data to the specific address. The de-scrambler is connected to the data bus for de-scrambling the data based on the first parameter when the core is to read the data from the specific address.

REFERENCES:
patent: 5587954 (1996-12-01), Vogley et al.
patent: 5765197 (1998-06-01), Combs

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