Circuit and method for the securing of a coprocessor...

Details Circuit and method for the securing of a coprocessor... Circuit and method for the securing of a coprocessor...

2005-11-29

2005-11-29

Jung, David (Department: 2134)

Electrical computers and digital processing systems: support

Data processing protection using cryptography

Computer instruction/address encryption

C380S028000, C380S255000, C713S189000

Reexamination Certificate

active

06971020

ABSTRACT:
A circuit and a method are provided for securing a coprocessor dedicated to cryptography. The disclosed circuit includes a scrambling register and an accessory input register to convey scrambling information in the form of electrical signals that disturb the visibility of certain electrical signals associated with confidential information such as digital keys.

REFERENCES:
patent: 6144744 (2000-11-01), Smith et al.
“80×86 Evolution”, Sep. 2, 1998, [Retreived from Internet Jul. 8, 2004], http://www.ee.vt.edu/˜ee4536an
otes/lect—01s.pdf.

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