SSH Key Generator — Free Online RSA SSH Key Pair Generator
Generate RSA SSH key pairs (2048 or 4096-bit) — public and private keys ready for servers, GitHub, and CI/CD.
Frequently Asked Questions
SSH Key Authentication: Passwordless, Secure Server Access
SSH (Secure Shell) key authentication replaces passwords with cryptographic proof-of-identity. Instead of typing a password that could be intercepted or brute-forced, you prove possession of a private key through a challenge-response protocol. The server stores your public key; the private key never leaves your device.
RSA key generation uses the Web Crypto API — your private key is generated locally and never transmitted anywhere. The public key in OpenSSH format (starting with ssh-rsa) can be added to any server's ~/.ssh/authorized_keys file or uploaded to GitHub, GitLab, Bitbucket, or any SSH-accepting service.
For production use, generate keys locally using ssh-keygen: ssh-keygen -t rsa -b 4096 -C "email@example.com". This tool is useful for quickly generating keys in environments where you can't run command-line tools, or for generating test keys for development environments. Always protect private keys — never commit them to version control.