C

cryptography

The firmware engineering home of the Cryptohack electronic badge project.

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

CivicProof is an open-source identity verification and trust infrastructure built as a public commons for the digital world. It enables users to securely verify identity, documents, and credentials using cryptographic proofs, self-sovereign identity standards, and optional AI-assisted verification tools. Designed under the AGPL 3.0+ license, CivicProof replaces centralized KYC and e-signature systems with a privacy-preserving, modular, and user-controlled verification framework where trust is proven rather than assumed. https://roxanneardary.com/civicproof/

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

TraceCommons is an open-source transparency and provenance infrastructure that uses Merkle-based append-only logs, witness verification, and cryptographic timestamp anchoring to create independently verifiable digital records. It extends into AI provenance tracking, enabling datasets, models, and generated content to be traced and audited across their full lifecycle, helping establish trustworthy digital history in the AI era. https://roxanneardary.com/tracecommons/

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.

CommonVote System is an open-source, distributed voting infrastructure protocol designed to enable secure, verifiable, and jurisdiction-adaptable elections. It uses end-to-end encryption, cryptographic identity verification, and one-time voting tokens to ensure ballot integrity while preserving voter privacy. The system separates identity, voting, and audit layers, with blockchain-based immutable vote recording and a compliance-driven jurisdiction plugin model that allows states and countries to define legal election rules without modifying the core cryptographic system. https://roxanneardary.com/commonvote-system/

Zig Hardware Security Module library for PIV, CAC, and YubiKey tokens via PC/SC. Supports certificates, PIN management, signing, and decryption.

QUIC-native TLS 1.3 implementation in Zig. RFC 8446/9001 compliant with zero external dependencies.

The firmware board support package home of the Circuit Crafters first electronic badge project.

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

Pure Python cryptocurrency address generation and cryptographic utilities.

ProofShield is an open-source document authenticity and fraud prevention system designed to protect digital and physical documents from forgery, unauthorized alteration, and AI-generated manipulation. Using certified mirror images, cryptographic verification, AI detection, privacy-preserving validation, and hardware security integration, ProofShield creates a trusted verification layer that makes document authenticity provable and alterations visible. https://roxanneardary.com/proofshield/

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.

BalanceSeal is an AGPL 3.0+ cryptographic audit module for cryptocurrency exchanges and digital wallets that generates a verifiable, time-frozen snapshot of all user assets at the moment an account is terminated. It aggregates on-chain and off-chain balances, reconciles holdings across systems, locks market pricing at the termination timestamp, and produces tamper-evident reports for compliance, auditing, and transparency. https://roxanneardary.com/balanceseal/

Cryptographic protocol and security-related protocol piece parser.

Free repository of cryptography-related data.

Umbrix is a commercial-grade, open-source VPN designed for full network obfuscation, multi-node chaining, and AI-assisted adaptive privacy. It masks everything from IP and location to device telemetry, provides cross-platform support, and includes advanced features like multi-hop routing, stealth traffic transforms, decentralized node management, and post-quantum-ready cryptography. Built for maximum anonymity, Umbrix ensures your online activity remains invisible, secure, and untraceable. https://roxanneardary.com/umbrix/

SelfRoot is an open-source deterministic identity infrastructure project that replaces passwords and centralized identity systems with cryptographic authentication derived from live human presence. It processes biometrics locally, converts them into non-reversible templates, and uses them to unlock hardware-bound cryptographic keys for secure challenge–response authentication, without storing or transmitting biometric data. https://roxanneardary.com/selfroot/

scared is a side-channel analysis framework.