C

cryptography

VanitySearch is a tool designed for finding Bitcoin address prefixes. If you wish to generate a secure private key, please use the -s option to enter your passphrase; this passphrase will be used to generate a base key compliant with the BIP38 standard (e.g., VanitySearch.exe -s "my passphrase" 1MyPrefix). Alternatively, you can use the command VanitySearch.exe -ps "my passphrase", which incorporates an additional cryptographically secure seed into your passphrase. This update addresses bugs related to custom address matching and private key conversion, replaces the random number generator, introduces new search puzzles tailored to specific finite regions, and adds both "random" and "incremental" search modes. Furthermore, the -e option has been added to enable homomorphic properties—a feature that has been completely reimplemented—while the integration of the AVX2 instruction set optimizes CPU performance and enhances underlying logic.

Leonardus is an open source project. It is a minimalist, stack-based programming system designed as a flexible framework for implementing and exploring algorithms. The syntax and semantics of its scripting language, LeoScript, are inspired by PostScript and Forth. It is extended with a prototype-based, object-oriented paradigm, has seamless integration into JupyterLab and Docker, and provides a concise and expressive environment for learning and experimentation.

The project name is a nod to Leonardus Pisanus, who was named and became known as Fibonacci.

Consult the project's GitLab Pages for documentation.

GPU secp256k1 toolkit on a single card: brute-force search, Pollard kangaroo for exposed pubkeys, and BIP39 seed recovery. One CUDA binary, one verified math core.

The firmware engineering home of the Circuit Crafters first electronic badge project.

High-performance cryptographic suite featuring massive parallel execution of Secp256k1, SHA-256, and RIPEMD-160 using NVIDIA CUDA (GPU) and AVX2 (CPU). Includes a standalone CashAddr library.

A high-performance toolkit in C, integrating arbitrary-precision arithmetic (NTT-accelerated calculator, base converter) and multithreaded password dictionary generators. Designed for cryptography, security testing, and scientific computing.

A comprehensive C/C++ toolkit for cryptocurrency security. Features include "God Wallet" (CSPRNG key generation), Bitcoin wallet.dat hash extraction, educational brain wallets, and vulnerability PoCs (Trust Wallet PRNG).

boost::asio powered setup of a secure communication channel using ECDH and AES.

C++17 header only library for common cross-platform networking, sockets, ssl, threading, new language features, crypto, and serial i/o support.

🔐Design of a system and code using the Arduino UNO R3 board to generate 30-second tokens based on the TOTP algorithm.

A C++ client for dYdX v4 API THIS IS A MIRROR

Patches for QUIC and client isolation for lokinet

Enigma style algorithm for text encryption.

Authenticated FBP is an extension to FBP that ensures a correct file distribution from the intended source to the receivers.

Shows Real Time Price of Cryptocurrencies on several Screens

Easy Save 3 save file decryption/encryption librarywith optional CLI and web GUI using layout files

Cryptograpy in terminal

Distributed Privacy Guard (DKGPG) implements Distributed Key Generation (DKG) and Threshold Cryptography for OpenPGP