SSH Key Generator

A free, open-source SSH key generator that runs entirely in your browser. Generate secure SSH keys with Ed25519 or RSA algorithms—your private keys never leave your device.

Live Demo: https://sshkeygenerator.com

Features

Key Generation

• Ed25519 (recommended) - Modern elliptic curve algorithm with excellent security
• RSA (2048/4096-bit) - Maximum compatibility with legacy systems
• 100% Client-Side - All cryptographic operations happen in your browser
• OpenSSH Format - Standard output compatible with all SSH clients
• SHA256 Fingerprints - Verify key authenticity easily
• Passphrase Encryption - Optional password protection for private keys

Command Mode

• Generate ssh-keygen commands for macOS, Linux, and Windows
• Copy-paste ready commands for terminal execution
• Complete setup scripts with proper permissions

SSH Config Builder

• Visual builder for ~/.ssh/config files
• Support for ProxyJump (bastion/jump hosts)
• Agent forwarding configuration
• Download ready-to-use config files

Platform Guides

Step-by-step setup instructions for:

• GitHub
• GitLab
• Bitbucket
• AWS EC2
• Azure VMs
• DigitalOcean Droplets

Progressive Web App

• Works Offline - Install as an app and generate keys without internet
• Fast Loading - Service worker caching for instant startup
• Mobile Friendly - Responsive design for all devices

Internationalization

• English
• 简体中文 (Simplified Chinese)

Tech Stack

• React 19 - UI framework with latest features
• TypeScript - Type-safe development
• Vite - Fast build tooling
• Tailwind CSS 4 - Utility-first styling
• Zustand - Lightweight state management
• @noble/ed25519 - Audited Ed25519 implementation
• Web Crypto API - Browser-native cryptography for RSA

Development

Prerequisites

• Node.js 18+
• pnpm (recommended) or npm

Setup

# Clone the repository
git clone https://github.com/Fechin/ssh-key-generator.git
cd ssh-key-generator/keymint

# Install dependencies
pnpm install

# Start development server
pnpm dev

Scripts

pnpm dev      # Start development server
pnpm build    # Build for production
pnpm preview  # Preview production build
pnpm lint     # Run ESLint
pnpm deploy   # Build and deploy to Cloudflare Pages

Deployment

This project is configured for deployment to Cloudflare Pages:

pnpm deploy

The deploy script builds the project and deploys to the ssh-key-generator Cloudflare Pages project.

Manual Deployment

1. Build the project: pnpm build
2. Deploy the dist folder to any static hosting service

Security

Client-Side Only

All key generation happens entirely in your browser using:

• Web Crypto API for RSA key generation
• @noble/ed25519 for Ed25519 keys (audited cryptographic library)

No Server Communication

• Private keys are never transmitted over the network
• No analytics or tracking of generated keys
• No server-side storage of any user data

Open Source

The entire codebase is open source and auditable. We encourage security researchers to review our implementation.

Browser Support

• Chrome 90+
• Firefox 90+
• Safari 15+
• Edge 90+

Requires Web Crypto API support for RSA key generation.

Contributing

Contributions are welcome! Please feel free to submit issues and pull requests.

1. Fork the repository
2. Create your feature branch (git checkout -b feature/amazing-feature)
3. Commit your changes (git commit -m 'Add amazing feature')
4. Push to the branch (git push origin feature/amazing-feature)
5. Open a Pull Request

License

MIT License - see LICENSE for details.

Acknowledgments

• @noble/ed25519 - Audited Ed25519 implementation
• shadcn/ui - UI component inspiration
• Lucide Icons - Beautiful open-source icons