SFTP Host Key Fingerprint Viewer

Retrieve the SSH host key fingerprint of any SFTP server. View key type and both MD5 and SHA256 fingerprints without needing credentials.

What is a host key fingerprint?

Every SSH/SFTP server has a unique host key pair. The fingerprint is a short hash of the public key that you can use to verify you’re connecting to the right server — not an imposter.

SSH clients store host key fingerprints in a known_hosts file. On first connect, they ask you to confirm the fingerprint. On subsequent connects, they verify it automatically. A changed fingerprint is a warning sign of a man-in-the-middle attack or a server rebuild.

SHA256 vs MD5

SHA256 fingerprints (the default in modern OpenSSH) are more secure and collision-resistant. MD5 fingerprints are still shown by some older clients. Both identify the same key.