kuznechik | proposed Russian block cipher standard , Kuznechik

kuznechik is a C library. kuznechik has no bugs, it has no vulnerabilities and it has low support. You can download it from GitHub.

04-Jan-15 Markku-Juhani O. Saarinen . A simple, totally unoptimized implementation of the proposed Russian block cipher standard, Kuznechik ("Grasshopper"). 128-bit block size, 256-bit key. A preliminary spec has been around for a year or two, and I met with few of the authors in Moscow in June '14 (CTCryt '14). The doc subdirectory has some documetation: the current Russian spec, Eric Filiol’s translation, and the version presented at CTCrypt '14. Eric Filiol also has a [blog entry on this cipher] (although his implementation is pretty horrible — with code in header files etc). This package includes two versions; a really simple 8-bit version and a version that uses 128-bit data types and really big tables (to show that it can be done). You can choose the version you want in the Makefile; there is about a 100x difference in performance between the two versions but output is equivalent. The implementations match with the test vector found in the standard. However I am not sure about the endianess convention used to store data on wire, so I am just guessing big endian (network byte order — not the endianess Intel systems usually use). Pretty standard coding conventions, 4-space tabs.