Projects sharing features with GmSSL

CryptoSwift is a cryptography library implemented entirely in the Swift programming language. It provides a collection of standard cryptographic algorithms for encryption, decryption, and hashing without relying on native C libraries or system frameworks. The library supports symmetric and asymmetric encryption, including RSA key generation and signature management. It features authenticated encryption schemes and the ability to generate cryptographic digests for data integrity verification. The toolset covers message authentication codes, secure key derivation from passwords, and data paddi

Mbed TLS is an open-source TLS and DTLS library with a small footprint, designed for embedded systems and IoT devices. It provides a portable cryptographic library that includes symmetric ciphers, hashing, and public-key cryptography, along with a reference implementation of the PSA Cryptography API for standardized cryptographic operations across platforms. The library also offers X.509 certificate management for parsing, validating, and managing certificate chains in secure communications. The library is built around a platform abstraction layer that decouples it from OS-specific services t

Crypto++ is a comprehensive C++ cryptographic library that implements a broad range of algorithms for symmetric and asymmetric encryption, hashing, and digital signatures. It is designed as a portable toolkit, usable across different operating systems without modification. The library distinguishes itself through its architecture: cryptographic parameters such as key size and mode are configured at compile time via C++ templates, eliminating runtime overhead. Algorithms are registered in a static factory for runtime lookup, while data processing follows a pipeline model of composable sources,

This project is a learning guide and collection of study notes designed to teach Node.js backend development. It provides a comprehensive core API reference and practical demonstrations for implementing server-side logic, network programming, and system APIs. The guide specifically covers advanced technical domains including process management for scaling applications via clusters and child processes, as well as network programming for building TCP, UDP, and HTTP services. It also includes detailed instructional material on security implementation, focusing on cryptographic hashing and encryp

This project is a Python cryptography library that provides a collection of cryptographic primitives and high-level recipes for implementing secure encryption and authentication. It functions as a symmetric encryption toolkit and a cryptographic hash provider, offering both a low-level cryptographic interface for building custom protocols and high-level tools for securing data. The library covers a broad range of security capabilities, including symmetric data encryption, the derivation of cryptographic keys from passwords or secret values, and data integrity verification through the generati

This is a Java library and framework for creating, parsing, and validating JSON Web Tokens within Java and Android applications. It provides a comprehensive toolkit for handling signed and encrypted tokens, including the generation and verification of JWS and JWE objects. The project differentiates itself through a flexible architecture that supports pluggable JSON serialization and custom signature algorithms. It includes a dedicated key manager for generating, encoding, and organizing JSON Web Keys and key sets, as well as support for hardware security module integration. The library cover

jsencrypt is a JavaScript library for performing RSA encryption, decryption, and key generation. It functions as an asymmetric key generator and digital signature provider that executes all cryptographic processing directly in the browser. The library focuses on the use of the PEM standard for importing, exporting, and managing cryptographic keys. It provides the ability to create public and private RSA key pairs of various bit sizes and supports OpenSSL compatible formats. Its capabilities cover the transformation of plaintext into ciphertext and the recovery of original messages using corr

rippled is a peer-to-peer node implementation for the XRP Ledger. It serves as a distributed ledger consensus engine and a blockchain API gateway, allowing servers to validate transactions and maintain a shared, immutable sequence of ledger state. The project features a built-in decentralized exchange engine capable of executing atomic cross-currency payments and managing order books. It includes an on-chain asset management system for issuing and controlling fungible tokens and NFTs, as well as a Byzantine Fault Tolerant system for coordinating validators. The platform provides comprehensiv

hashsigs-py is a hash-based signature library for Python used to generate and verify one-time digital signatures. It employs hash chains and seed-based key derivation to authenticate data and ensure message integrity. The library includes a high-performance compiled cryptography backend to accelerate signature computation and processing. For compatibility, it maintains a pure Python fallback implementation to ensure functionality when the compiled backend is unavailable. The project provides tools for digital key pair management, allowing for the deterministic generation of public and privat

iron-session is a stateless session management library for JavaScript that stores encrypted and signed session data directly in browser cookies. It functions as authentication middleware to verify user identity without requiring a server-side database or network lookups for session retrieval. The project provides a symmetric key encryption tool that supports versioned password rotation. This allows encryption keys to be updated across a system without invalidating active user sessions. Beyond session management, the library includes utilities to seal arbitrary data objects into secure signed

git-crypt is a transparent cryptography layer and secret manager for Git repositories. It encrypts specific files so they remain as ciphertext on remote servers while appearing as plaintext in local directories. The tool uses Git attributes to define the scope of files and directories targeted for encryption. It supports both symmetric secret key encryption for shared access and asymmetric public key encryption to control decryption permissions among multiple collaborators. The system automates the encryption and decryption process through hook-based filters that trigger during commit and ch

php-encryption is a symmetric encryption library for PHP that provides tools for authenticated encryption and key derivation to ensure data confidentiality and integrity. It functions as a cryptography toolkit that wraps complex primitives into simplified interfaces to prevent common implementation errors. The library includes a binary-safe ciphertext serializer to maintain data structure during storage and transmission, as well as a password-based key derivation tool that transforms low-entropy passwords into cryptographically strong keys through iterative processes. The project covers a br

Secretive is an SSH key manager that utilizes hardware-backed security modules to generate and store non-exportable private keys. It integrates with secure enclaves to ensure that sensitive cryptographic material remains within the hardware and cannot be exported from the device. The system implements a biometric authentication workflow, requiring fingerprint or wearable verification before a private key is released for signing operations. It also provides the ability to bridge signing requests to external hardware tokens for systems that lack a built-in secure enclave. The project includes

Forge is a JavaScript cryptography library providing a comprehensive set of tools for symmetric and asymmetric encryption, hashing, and digital signatures. It includes a full Transport Layer Security implementation for establishing secure network connections and managing encrypted traffic. The project implements a wide array of public key infrastructure tools, including X.509 certificate management, the generation of certificate signing requests, and the validation of certificate chains. It provides a PKCS cryptographic toolkit for handling secure archives and signed messages, alongside suppo

BLAKE3 is a high-performance implementation of the BLAKE3 cryptographic hash algorithm used for calculating secure data digests and fingerprints. It functions as a parallel cryptographic hash tool that distributes workloads across multiple processor threads to process large datasets rapidly. The project provides specialized tools for keyed hashing and the generation of message authentication codes. It also includes functionality for cryptographic key derivation, allowing the creation of unique secret sub-keys from a master key and context strings. The implementation supports data integrity v

Mbed TLS is a C library that provides a full implementation of the TLS and DTLS protocols for secure network communication, a library of fundamental cryptographic primitives, and a reference implementation of the PSA Cryptography API. It also includes libraries for parsing, validating, and managing X.509 digital certificates, as well as support for integrating hardware cryptoprocessors through the PSA Cryptoprocessor Driver Interface. The library is designed for resource-constrained environments and is built from source with a customizable feature set, allowing developers to select which TLS

Keys is a library and command-line utility designed for the generation, storage, and lifecycle management of cryptographic keys. It provides tools to create asymmetric key pairs, perform digital signature verification, and implement authenticated encryption to ensure the confidentiality and integrity of sensitive data. The project distinguishes itself by offering a secure storage abstraction that decouples application logic from underlying key storage mechanisms. By utilizing standardized cryptographic protocols, it enables consistent identity verification and data protection across diverse c

crypto-js is a JavaScript cryptography library providing a collection of standard cryptographic algorithms and data transformation tools. It functions as a symmetric encryption toolset, a cryptographic hash implementation, and a password derivation tool for the JavaScript environment. The library enables the protection of sensitive data through symmetric encryption and the production of fixed-size data digests to verify integrity. It includes utilities for converting user passwords into secure cryptographic keys and a data format converter for translating information between Base64, Hex, and

Stegcloak is a unicode steganography library and text-based data concealment tool. It provides a toolkit for hiding encrypted, compressed secret messages within standard text strings by mapping binary data to invisible, non-printing Unicode characters. The project combines a symmetric encryption toolkit with an invisible character encoder to ensure secure data concealment. It utilizes password-based key stretching and authenticated symmetric encryption to protect hidden payloads from unauthorized access and tampering. The system covers the full steganography workflow, including payload compr

This project is a comprehensive computer networking textbook and instructional resource. It serves as a technical guide for the design and implementation of network layers, protocols, and hardware architecture, covering the spectrum from physical links to application-layer protocols. The content provides a detailed study of standards for congestion control, reliable data delivery, and internetwork routing. It includes specialized technical material on network security, public-key infrastructure, and the operation of modern cloud infrastructure and data centers. The material covers a broad ra

This project is a comprehensive hardware security guide for using YubiKey tokens to manage encryption, digital signatures, and secure authentication. It provides technical instructions for configuring hardware security modules to handle digital identity and cryptographic materials. The documentation focuses on the implementation of OpenPGP and SSH workflows, specifically covering the creation of master key hierarchies, the rotation of subkeys, and the use of hardware-backed keys for secure shell connections. It also details methods for verifying code authorship through signed Git commits and

PeaZip is a cross-platform archive manager and file compression utility. It functions as a tool for compressing, extracting, and managing files across various formats, including 7Z, ZIP, RAR, and TAR. The project includes a specialized archive format converter for adjusting compatibility and compression levels, and a file integrity verifier for calculating checksums and hashes. It provides security tools for protecting data via authenticated encryption and passwords, as well as secure file deletion to permanently erase data from disk space. The application covers a broad range of capabilitie

This is a JSON Web Token authentication package for the Django REST Framework that manages stateless user identities. It serves as an authentication provider and token manager used to issue and validate signed tokens to maintain user sessions across multiple requests. The project implements a dual-token lifecycle, issuing short-lived access tokens and long-lived refresh tokens to balance security with session persistence. It features token rotation to prevent replay attacks and a blacklisting system to invalidate compromised credentials. Additionally, it supports sliding-window expiration to

This project provides a server-side language runtime and a standardized Docker image for deploying applications across different operating systems. It functions as an execution environment for generating dynamic HTML, JSON, and XML content, while also serving as a command line interface for automation scripts and background jobs. The runtime is designed for extensibility through a C-based extension architecture, allowing the loading of custom modules for specialized functionality. It supports multiple server application interfaces, including a FastCGI web interface for high-performance commun

This project is a technical study and analysis guide focused on the internal architecture of Node.js. It provides an in-depth examination of the runtime, focusing on how the engine manages memory handles, executes asynchronous operations, and implements core module logic. The guide specifically analyzes the integration of native C++ classes and functions into JavaScript and documents the behavior of the libuv event loop. It includes detailed references for optimizing performance by identifying V8 compiler bailouts and profiling execution to improve resource efficiency. The material covers a

This library provides a collection of low-level mathematical primitives for Curve25519 and Ristretto group operations. It serves as a foundation for building secure cryptographic protocols, offering tools for elliptic curve arithmetic, key exchange, and digital signature generation. The implementation prioritizes side-channel resistance by utilizing constant-time arithmetic logic across all operations, ensuring that secret-dependent timing variations are prevented. It leverages the Rust type system to enforce state validity, making illegal group elements unrepresentable at compile time. To ma

PyJWT is a Python library for encoding, decoding, and verifying JSON Web Tokens (JWTs). It provides comprehensive JWT functionality including algorithm-agnostic signing and verification, supporting both symmetric HMAC shared-secret cryptography and asymmetric RSA/ECDSA public-key cryptography for flexible trust models. The library implements a claim-based validation pipeline that checks issuer, audience, expiration, and other time-based claims during token decoding, with configurable clock skew tolerance for distributed systems. It requires callers to explicitly specify allowed signing algori