What are "encrypted instruction sets"? In 1999, a news article (Careless mistake reveals subversion of Windows by NSA) discussed "encrypted instruction sets". What exactly are these? Please provide a link so I can find more information.

Does it have anything to do with the following:

A First Practical Fully Homomorphic Crypto-Processor Design 

Next-Generation Secure Computing Base

A similar question was asked here some time back (What are 'Encrypted Instruction Sets' ?), but it did not garner any useful responses.

I am already aware of hardware-based encryption &amp; Intel's native support for AES. This one seems very different from the others.
i guess that encrypted instruction set is an encrypted instruction commands for cpu that will only work for encrypted programs.you can steal the program but can't execute it on your normal computer,or you can't hack to that computer because that computer can't run normal standard program unless it switch to normal instruction or translate the program.