It is official, lads! The first specification of EnRUPT32 has been published at SASC-2008.

Download EnRUPT32 Specification PDF
View EnRUPT32 Specification in HTML
Download the latest C source code ZIP

Looks like there is still a lot of work to do before it can be submitted to the NIST competition – fast software implementations, basic cryptanalysis, ambiguities to fix, open questions to answer… But I doubt that I will change anything in the design unless someone points out a flaw in it or a way to improve its performance without sacrificing its simplicity or its flexibility or its scalability.

Suggestions and contributions are very welcome of course.