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Submission + - Computer scientists develop 'mathematical jigsaw puzzles' to encrypt software (ucla.edu)

another random user writes: The claim here is that the encrypted software can be executed, but not reverse-engineered. To quote from the article:

UCLA computer science professor Amit Sahai and a team of researchers have designed a system to encrypt software so that it only allows someone to use a program as intended while preventing any deciphering of the code behind it.

According to Sahai, previously developed techniques for obfuscation presented only a "speed bump," forcing an attacker to spend some effort, perhaps a few days, trying to reverse-engineer the software. The new system, he said, puts up an "iron wall," making it impossible for an adversary to reverse-engineer the software without solving mathematical problems that take hundreds of years to work out on today's computers — a game-change in the field of cryptography.


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