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Preview of New Block Cipher

Posted by Hemos on from the doesn't-matter-until-peer-testing dept.

flaws writes "Secure Science Corp. is offering a preview of one of the 3 ciphers they will be publishing througout the year. The CS2-128 cipher is a 128-bit block cipher with a 128 bit key. This cipher is proposed as a hardware alternative to AES, being that it is more efficient in hardware, simpler to implement, and comparably secure to AES-128. The preview of the CS2-128 cipher proposed is in html form and will be available in a published format at the end of April. At this time, requests are made for casual peer review and implementation. Secure Science will be offering a challenge at the end of April, introducing the cipher to the public. This ciphers implementation and usage will be offered in multiple hardware devices, such as wireless routers, cell-phones, and storage management hardware."

3 of 232 comments (clear)

  1. "provably just as secure as AES-128"? Bah. by Jepler · · Score: 5, Informative

    I read the paper. They devote, oh, a page or so to attacks. Proven as secure as AES? bah.

  2. Re:Well....maybe by patchvonbraun · · Score: 5, Informative

    Immunity in this case meaning that the work factor for mounting the attack is greater or equal to the work factor for brute-forcing the key. If brute-forcing the key costs 2**128 operations, and differential costs 2**129, for example, then you'd be crazy to attempt differential cryptanalysis, when bruting the key is cheaper. I admit to not having RTFP, so I can't evaluate their claim of immunity to DC and LC, but modern ciphers are deliberately designed to be resistant to attack via DC and LC.

  3. Re:Snake Oil? by flaws · · Score: 5, Informative

    1) No - it is open source and technically public domain. 2) That is what we are attempting now - the preview is to get it lined up with crypto experts to review. 3) If it gets past 2, then that is something to consider.