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SSH Key Generator

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SSH Key Generator

Key Generation Settings
Name of your key - optional, but helpful to identify it among several keys.
Add an extra layer of protection to your private key with a passphrase. You'll need to enter this passphrase every time you use the key.
How to Use SSH Keys
1. Generate a key pair

Click the "Generate New SSH Key Pair" button above to create your Ed25519 key pair.

2. Save your private key

Download or copy your private key and save it to ~/.ssh/id_ed25519 on your local computer:

# Linux/macOS
mkdir -p ~/.ssh
chmod 700 ~/.ssh
# Paste or save the private key to ~/.ssh/id_ed25519
chmod 600 ~/.ssh/id_ed25519
3. Add public key to your hosting account

Copy your public key and add it to your hosting account via:

  • Control panel → SSH Access → Add SSH Key
  • Or manually add to ~/.ssh/authorized_keys on the server
4. Connect to your server
ssh username@your-server.ramendomains.name
Important: Ed25519 keys are more secure and faster than RSA keys. They are supported by all modern SSH clients.

Everything you need to know about Ed25519 SSH keys

What are SSH keys and why do you need them?

SSH keys are a cryptographic authentication method that replaces traditional passwords when connecting to servers. Instead of entering a password each time, you use a key pair: a public key that is stored on the server, and a private key that remains only with you. This significantly increases security and convenience of access to your hosting account.

Why Ed25519?

Ed25519 is a modern digital signature algorithm that offers the best balance of security and performance compared to traditional RSA keys. Ed25519 keys are shorter (256 bits instead of 2048-4096 bits for RSA), faster to generate and use, but still provide robust cryptographic protection. All modern SSH clients, including OpenSSH, PuTTY and Git, fully support this algorithm.

How does our generator work?

Our SSH key generation tool works entirely in your browser, using the proven cryptographic library TweetNaCl.js. This means your private key is never transmitted to our servers — it remains exclusively on your device. You can be confident in the confidentiality and security of your keys.

SSH keys security

SSH keys provide protection against password interception, dictionary attacks, and phishing. Even if someone intercepts your public key (which is safe), they cannot access your account without the private key. This makes SSH keys an ideal solution for protecting your hosting accounts and servers.

Using with Git and version control systems

Ed25519 SSH keys are also widely used with Git and other version control systems. You can use the same key for secure access to GitHub, GitLab, Bitbucket repositories and other development platforms.

Best practices for working with SSH keys

  • Keep your private key secure — don't share it with anyone
  • Use a passphrase — add an extra layer of protection
  • Rotate keys regularly — update them for security purposes
  • Keep backups — store the private key in multiple locations
  • Restrict file access — set correct permissions (chmod 600)

Supported operating systems

Ed25519 SSH keys are supported on all major operating systems:

  • Linux — built-in OpenSSH support
  • macOS — built-in SSH support
  • Windows — support via OpenSSH (built-in Windows 10+) or Git Bash
  • Android and iOS — support via mobile SSH clients

Frequently Asked Questions about SSH keys

Yes, absolutely. One public key can be added to multiple servers and accounts. Your private key will work with all of them.
If you lost your private key, you can generate a new pair and upload the new public key to your hosting control panel. The old key will no longer work.
Yes, generation happens entirely locally in your browser. The cryptographically secure crypto.getRandomValues() function is used to create random data, and all operations are performed on your device.
Quick Tips
Tip: Use a descriptive key comment (e.g., user@laptop-2024) to easily distinguish between different keys.
Warning: Never share your private key with anyone, not even with hosting support.
Convenience: After adding the key, you'll be able to connect to the server with one command without entering a password!
Security Notice: Keys are generated entirely in your browser using cryptographic libraries. Your private key never leaves your device and is not transmitted to our servers.

About privacy

This generator works completely on the client side. We do not collect, store, or transmit any information about the keys you create. All operations are performed in your browser, and the data remains exclusively under your control.

  Tools

Password Generator
SSH Key Generator

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