Java

Load an SSH Key from a File (Many Formats Supported)

Demonstrates how to load an SSH public or private key object from a file. The file can be in any of the following formats:

• OpenSSH private key
• OpenSSH public key
• PuTTY private key
• RFC 4716 public key

Chilkat2 Java

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

public class ChilkatExample {

    public static void main(String[] args) {
        SshKey sshkey = new SshKey();

        // First, use the LoadText convenience method to load a text file (of any SSH key format)
        // into a string:
        String strKey = sshkey.loadText("../mySshKeys/myKey.txt");

        // Next, load the key into the SSH key object.

        // If the key is an OpenSSH private key:
        // (In actuality, the From* methods will automatically detect the format and load
        // the key correctly.  For example, if a PuTTY private key is passed to FromOpenSshPrivateKey,
        // it  will still load correctly.)
        try {
            sshkey.fromOpenSshPrivateKey(strKey);
            System.out.println("Loaded OpenSSH private key.");
            return;
        } catch (ChilkatException e) {
            System.out.println(e.getLastErrorText());
        }

        // If the key is an OpenSSH public key:
        try {
            sshkey.fromOpenSshPublicKey(strKey);
            System.out.println("Loaded OpenSSH public key.");
            return;
        } catch (ChilkatException e) {
            System.out.println(e.getLastErrorText());
        }

        // If the key is a PuTTY private key:
        try {
            sshkey.fromPuttyPrivateKey(strKey);
            System.out.println("Loaded PuTTY private key.");
            return;
        } catch (ChilkatException e) {
            System.out.println(e.getLastErrorText());
        }

        // If the key is an RFC 4716 public key:
        try {
            sshkey.fromRfc4716PublicKey(strKey);
            System.out.println("Loaded RFC 4716 public key.");
        } catch (ChilkatException e) {
            System.out.println(e.getLastErrorText());
        }
    }
}