// TOOLS
Security Tools
🔑 SSH Key Analyzer
Paste an SSH public key to analyse it: type, bit length, comment, fingerprint and whether it is secure. Also generates ready-to-copy ssh-keygen commands.
Generate the optimal ssh-keygen command for each use case. All commands can be copied directly on Kali/Ubuntu/macOS.
ED25519 (recomendado)
Most secure and fastest. 256-bit key equivalent to RSA 3072. Supported since OpenSSH 6.5.
ssh-keygen -t ed25519 -C 'user@host' -f ~/.ssh/id_ed25519
RSA 4096
Maximum compatibility. Use when server does not support ED25519.
ssh-keygen -t rsa -b 4096 -C 'user@host' -f ~/.ssh/id_rsa
ECDSA P-256
Good alternative to ED25519. Supported on more legacy platforms.
ssh-keygen -t ecdsa -b 256 -C 'user@host' -f ~/.ssh/id_ecdsa
ED25519 con passphrase
Same as ED25519 but with passphrase. Maximum security for personal use.
ssh-keygen -t ed25519 -C 'user@host' -f ~/.ssh/id_ed25519 # Te pedirá passphrase durante la generación
Clave para CI/CD (sin passphrase)
For automated pipelines. Store private key in CI/CD secrets.
ssh-keygen -t ed25519 -C 'ci-deploy@pipeline' -f ~/.ssh/deploy_key -N ''
Clave de servidor (host key)
To regenerate SSH server host keys.
# ED25519 host key: ssh-keygen -t ed25519 -f /etc/ssh/ssh_host_ed25519_key -N '' # RSA host key: ssh-keygen -t rsa -b 4096 -f /etc/ssh/ssh_host_rsa_key -N ''
Enter the SSH server to audit and generate commands to check its configuration and detect weaknesses.