There are explanations on how it works here [https://archive.is/6imWR https://archive.is/6imWR] [http://www.tangleblog.com/wp-content/uploads/2018/02/letters.pd

There are explanations on how it works here [https://archive.is/6imWR https://archive.is/6imWR] [http://www.tangleblog.com/wp-content/uploads/2018/02/letters.pdf http://www.tangleblog.com/wp-content/uploads/2018/02/letters...] You don't need code to prove that a vulnerability exists, it is sufficient, especially for crypto primitives like hash functions or cipher rounds, that there is a mathematical vulnerability that can be potentially exploited.