This looks like a paper of "how to tranform secret key algorithm into public key one using obfuscation". Take AES-X, and obfuscate.

Hi,
I think that this is not exactly obfuscation: To my understanding, obfuscation is a reversible permutation, because its actually 1-1 mapping. The process of logic synthesis proposed in the publication is inherently not reversible, because it involves a loss of information. The only way to reverse it is to go through all possible inputs and record the associated outputs, which is similar to brute force attack