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This begs the question, why would you in any real-world circumstance wish to reduce the difficulty for an attacker to break your cryptosystem? To answer your question practically, the only reasonable way I can think of to accomplish this is to simply reduce the entropy in the key. At 100%, all 128 bits of the key are used. At 50%, 64 bits of the key are ...


The most likely rationale to change the AES design is political. It's a NIST standard, designed in Western Europe. It's a bad idea! How much scrutiny has it received? Almost none. How much will it receive? Almost none. Bad idea.


You cannot encrypt 720 bits plaintext using just AES-128. AES is a 128 bit block cipher. Such a block cipher has an input of 128 bits of plaintext and an output of 128 bits ciphertext; and that's it. You need some kind of construction to make block ciphers encrypt larger or smaller plaintext. Such constructions are known as (block cipher) modes of ...


I ("SEJPM" as of now) have contacted the authors asked them the same questions as in my question. I'm posting this as community wiki, as it's not my answer to this question but rather theirs. Now the responses follow: First off, the authors are working on a design rationale in english for their new cipher. As soon as it's published, it will be linked ...

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