twisted 2-step verification TOTP script

TOTP (Time-based One-Time Password) is commonly used to grant access to internet resources in addition to common user and password. TOTP is used primarily with Google Authenticator mobile app. But the algorithm can be easily implemented. All that is needed is the key provided by the internet resource we want to access to. Only using … Continue reading →

triops: operation and file format description (v9.0)

triops is a command-line tool for encryption/decryption of files that I released under GPL v3 some time ago. Please, check github for actual code. Note also that a version for Android is available. This post will try to explain its operation and file format. Explanation covers all versions published until present (v9.0). At the end … Continue reading →

statistics circle for analysing byte entropy in files

In a previous post I introduced triops, a multiplatform cmdline encryption tool using CHACHA20 algorithm. In general, any encryption algorithm should produce a reasonably high entropic output no matter the input (plain text) at hand — this is in order to be aligned with concepts like Entropic security and Semantic security, very important in modern … Continue reading →

triops.apk – CHACHA20+KECCAK encryption on Android

In a previous post I introduced triops, a multiplatform tool for encrypting files usign CHACHA20 and KECCAK algorithms. As the code is simple C, I’ve used JNI to port the code to the Android platform. The Android .apk package is available here, ready to install on your Android device. You can also find the .apk … Continue reading →

triops: a multiplatform cmdline encryption tool using CHACHA + KECCAK

I’ve developed in C a simple command line tool for encryption/decryption of files, which I have named triops. It uses CHACHA20 as algorithm for encryption/decryption and KECCAK-512 as hash algorithm. Source code is available at github. Check github for latest changes! Executables for some platforms (linux, Windows, HP-UX, Solaris, and Android) are available here. For … Continue reading →