Hmm 2015. then I guess I won't wait for the moderator to approve my reply over there.

> If you know of any other good ones (including a sample break), then please provide the link

Two months after that article was published:

https://lkml.org/lkml/2015/11/18/9

> But I listened carefully, because I suspected an easy target that I wanted to have a go at.

This was my easy target.

https://github.com/ed770878/HohhaDynamicXOR

Thank you for linking this repo, I remember reading about the algorithm in Phoenix back in 2015 but I wasn't able to find any cryptanalysis of it until now.

I find it quite fascinating how people who produce snake-oil crypto tend to not accept any mention of possible faults in their algorithms, in comparison to professional cryptographers who welcome public cryptanalysis.