Methods and circuits for protecting proprietary...

Details Methods and circuits for protecting proprietary... Methods and circuits for protecting proprietary...

2007-01-09

2007-01-09

Barron, Gilberto (Department: 2137)

Electrical computers and digital processing systems: support

Data processing protection using cryptography

C726S008000, C326S008000

Reexamination Certificate

active

10112790

ABSTRACT:
Described are various methods and systems for encrypting/decrypting configuration data for programmable logic devices. In configuration data defining a number of separately encrypted subdesigns, or “cores,” each subdesign includes a shared password or a unique authentication code to ensure the designs belong together. Other embodiments prohibit the overwriting of configuration memory to prevent the inclusion of unauthorized designs. Still other embodiments protect key secrecy while enabling users to read, write, and verify the keys.

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