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 […]
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 […]
hmacOTP is a free OATH-compliant OTP client for PDA which generates one-time passwords based on HMAC OTP (HOTP) standard. This standard is a recent industry development for open strong authentication. It is an effort of the initiative for Open AuTHentication and is currently supporting by multiple vendors whith authentication solutions.
The idea behind hmacOTP is […]
EFSeal is a program to enforce Microsoft Encrypting File System (EFS). One of the issues with EFS is there are no more encrypted resources once an attacker compromises Windows user account and login to the system. EFSeal is to mitigate this issue - it does not affect files and folders encrypted with EFS but protect […]
Download Zipofig (.exe, 15k)
Recently I had a 2.7GB ZIP archive with 2857 files stored with “no compression” method. Each ZIP meant to be unzipped sooner or later and this one was not an exception. To my surprise, I failed when I tried to unzip it. Attempts with different versions of such different programs as WinZip, […]
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