System and method for securing executable code

Details System and method for securing executable code System and method for securing executable code

2004-06-30

2010-06-08

Barron, Jr., Gilberto (Department: 2432)

Electrical computers and digital processing systems: support

Data processing protection using cryptography

By stored data protection

Reexamination Certificate

active

07734932

ABSTRACT:
A system and method for the secure storage of executable code and the secure movement of such code from memory to a processor. The method includes the storage of an encrypted version of the code. The code is then decrypted and decompressed as necessary, before re-encryption in storage. The re-encrypted executable code is then written to external memory. As a cache line of executable code is required, a fetch is performed but intercepted. In the interception, the cache line is decrypted. The plain text cache line is then stored in an instruction cache associated with a processor.

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