Java

SFTP Public-Key Authentication (id_ed25519)

See more SFTP Examples

Demonstrates how to authenticate with an SSH/SFTP server using publickey authentication with an Ed25519 private key (id_ed25519). Chilkat2 Java

import com.chilkatsoft.chilkat2.ChilkatException;
import com.chilkatsoft.chilkat2.SFtp;
import com.chilkatsoft.chilkat2.SshKey;

public class ChilkatExample {

    public static void main(String[] args) {
        // This example assumes the Chilkat API to have been previously unlocked.
        // See Global Unlock Sample for sample code.

        SshKey key = new SshKey();

        // The id_ed25519 file should contain something like this:
        // (You can open it in a text editor..)

        // -----BEGIN OPENSSH PRIVATE KEY-----
        // b3BlbnNzaC1rZXktdjEAAAAACmFlczI1Ni1jdHIAAAAGYmNyeXB0AAAAGAAAABDIeK9+Xw
        // 6Do9gnhtrJu5iJAAAAZAAAAAEAAAAzAAAAC3NzaC1lZDI1NTE5AAAAIMh/Ge7fjQCssmVd
        // BqjYZbRAI0pY8IrnB6J1yLetq34OAAAAoMVP7cvy4hTiAINA3I4v55OonkpKza8mzfUW18
        // RDQeYL3ovCVaAYOGcCpf/SW3QiY6tnXq+5WDEfJ7Z/kQ0nl2+1wSLOytxpyO+IY0rRtLrX
        // 6e/agR4nbZpt/MFG6xqcNASbtDgg+9IWGvDrtXOLFofx07/zml+UjFL0tXRpCjOxeqKyXH
        // t8SRgdT97d9/bYPwapaXY+b2DVVy5/LVx4Sq8=
        // -----END OPENSSH PRIVATE KEY-----

        String privKeyText;
        try {
            privKeyText = key.loadText("c:/temp/id_ed25519");

            // If your private key was saved encrypted, then you'll need the password.
            // In this example, the password "blahblah" is valid for the above key -- which is a real Ed25519 key generated/saved from puttygen.
            key.setPassword("blahblah");

            key.fromOpenSshPrivateKey(privKeyText);
        } catch (ChilkatException e) {
            System.out.println(e.getLastErrorText());
            return;
        }

        SFtp sftp = new SFtp();

        // Set some timeouts, in milliseconds:
        sftp.setConnectTimeoutMs(5000);
        sftp.setIdleTimeoutMs(15000);

        String hostname = "sftp.example.com";
        int port = 22;
        try {
            sftp.connect(hostname, port);

            // Authenticate with the SSH server.  Chilkat SFTP supports
            // both password-based authenication as well as public-key
            // authentication.
            sftp.authenticatePk("myLogin", key);
        } catch (ChilkatException e) {
            System.out.println(e.getLastErrorText());
            return;
        }

        System.out.println(sftp.getLastErrorText());
        System.out.println("Public-Key Authentication Successful!");

        // Now go do whatever you're app needs to do...
    }
}