Zcipher is a symmetric encryption algorithm made by me few years ago. It is a 64-bit block cipher with a 128-bit key. Zcipher is unpatented and public domain. Please note that it is a toy cipher, not a serious replacement for AES, Twofish, RC6, etc.
Here are
Algorithm specification (pdf, 54kb)
zcipher.c - reference implementation in C […]
The source code for the final Multics release is available at MIT
http://web.mit.edu/multics-history/
A good piece of history or nostalgie, depending on who is looking.
As you may know, I do cryptographic perversions occasionally. Recently I’ve been asked for a compact implementation of AES-256. Code size must be as small as possible, speed is not important and (here is the catch) no assembler. The requesters have tried various public available implementations before, none were fit. So I did mine. It […]
During last year I’ve seen few submission papers that are based on my note about singe cycle functions. The latest such paper puzzled me. The authors have reconstructed theory quite well but at some point have jumped surprisingly to a premature and wrong conclusion. To make things simpler, I’ve sketched a small online tool to […]
It is time to wipe out the dust and disclose more x-files from my personal archives. Some of you have asked and waited for this particular one for few years already. Thus, without further ado, let me to introduce SMACADU – Smart Card Digging (or “Dumb” if you wish) Utilities. It is a set […]
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