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Bitcoin Core integration/staging tree

General purpose TLS and crypto library

⚡ Automatically decrypt encryptions without knowing the key or cipher, decode encodings, and crack hashes ⚡

Cryptomator for Windows, macOS, and Linux: Secure client-side encryption for your cloud storage, ensuring privacy and control over your data.

✍🏻 Source Code Deep Dives, System Design & Engineering Blogs | Halfrost-Field 冰霜之地：源码解析、系统设计与工程实践笔记

A minimalist, open source online pastebin where the server has zero knowledge of pasted data. Data is encrypted/decrypted in the browser using 256 bits AES.

cryptography is a package designed to expose cryptographic primitives and recipes to Python developers.

Hide secrets with invisible characters in plain text securely using passwords 🧙🏻‍♂️⭐

A modern, open source password manager for individuals and teams.

The future of online communications.

A p2p, secure file storage, social network and application protocol

Easy to use cryptographic framework for data protection: secure messaging with forward secrecy and secure data storage. Has unified APIs across 14 platforms.

Library consisting of explanation and implementation of all the existing attacks on various Encryption Systems, Digital Signatures, Key Exchange, Authentication methods along with example challenges from CTFs

Database security suite. Database proxy with field-level encryption, search through encrypted data, SQL injections prevention, intrusion detection, honeypots. Supports client-side and proxy-side ("transparent") encryption. SQL, NoSQL.

A tool to analyze multi-byte xor cipher

A KeePass/Password Safe Client for iOS and OS X

🇸Superpowered Audio, Networking and Cryptographics SDKs. High performance and cross platform on Android, iOS, macOS, tvOS, Linux, Windows and modern web browsers.

Python binding to the Networking and Cryptography (NaCl) library

Privacy-first, end-to-end encrypted Mail, Pages, Drive, and Calendar.

Ruby FFI binding to the Networking and Cryptography (NaCl) library (a.k.a. libsodium)

Clean, portable, tested implementations of post-quantum cryptography

🔑 Free Offline-first Password Manager

Dead-simple file encryption for any OS

Easy file sharing with server-side encryption, curl/httpie/wget compliant

🔓 CLI tool and library to execute padding oracle attacks easily, with support for concurrent network requests and an elegant UI.

This is an aspiring project aimed at accumulating knowledge from the world of cybersecurity and presenting it in a cogent way, so it is accessible to as large an audience as possible and so that everyone has a good resource to learn hacking from.

Task-scoped authorization for AI agents. Cryptographic warrants constrain tools and arguments, prevent privilege escalation at every delegation hop, and produce signed evidence of what was allowed or denied.

Cryptography for Ethereum Verkle Trees

Prior direction, kept rather than deleted. Signed, offline-verifiable receipts for AI agent actions, and a reference implementation of the OWASP Agentic Skills Top 10 AST09 receipt pattern. Nobulex is now the independent reliability registry for agent tools: github.com/arian-gogani/nobulex-registry

TLS/SSL and crypto library (uses Zig Build)