C

cryptography

⚡ Essential JavaScript libraries/utilities for Node.js and the web

scared is a side-channel analysis framework.

KeyKiller is the world's highest-performing CPU-based Satoshi password cracker. It leverages modern CPU instruction sets like AVX2 and AVX512 to achieve unparalleled computing performance. Deeply optimized for the operating system, it strikes a balance between speed and accuracy, making it the ultimate tool for password cracking.

After optimization, version 3080 is equivalent to version 4090. I fixed address matching errors and private key conversion errors, modified the random generator, added puzzles suitable for specific regions, and more. It is commonly used in puzzle games, Brainflayer, Keyhunt, BitCrack, VanitySearch, etc.

Mnemonic converter, can generate randomly, view seeds, private keys, public keys and addresses of derived paths, etc., base58 bech32 cashaddr sha256 sha512 sha3256 ripemd160 keccak256 secp256k1 pbkdf2 mnemonics pbkdf2 hmac sha512 and other implementations.

This C language tool converts Bitcoin private key or public key or public key hash 160, calculates various addresses, including P2PKH, P2SH, SegWit and other formats, and supports conversion between hexadecimal and WIF formats of private keys.

Lightweight python gpg bindings based on subprocess

A no_std-compatible library for ergonomic byte array operations with optional security hardening. Supports multiple input formats (hex, binary, UTF-8), bitwise operations, and comprehensive type conversions with minimal dependencies.

https://federicoboccaccio.wordpress.com/firma-segreta/

A package that handles key pair generation and encryption / decryption of secrets using keys

CryptoLyzer is a fast, flexible, and comprehensive server cryptographic protocol (TLS, SSL, SSH, DNSSEC) and related setting (HTTP headers, DNS records) analyzer and fingerprint (JA3, HASSH tag) generator with Python API and CLI.

A sponge-based secure hash function that uses AES-256 as its internal PRF.

Cryptographic protocol and security-related protocol piece parser.

Free repository of cryptography-related data.

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).

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.

Advanced ECC (secp256k1) toolkit featuring public key cloning, homomorphic property analysis, and discrete logarithm reduction algorithms (Fission/Displacement) for key recovery and cryptographic research.

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.

Cryptopals challenges https://cryptopals.com/