[JSch-users] Connection with private key

[Luca D. <lu...@de...>]

Good afteroon,

I'm working on a java project and I'm going to use JSch for SFTP connection.
My test class worked fine when I used user/pass authentication, while it
ends with "*Auth fail*" when I try to switch to user/key authentication.

If I manually connect to the server using OpenSSH client it works, so SSH
server should work and accept the key.
I set up a simple logger, from its output it seems JSch skips publickey
method... without errors.
Where am I wrong? Thanks!

My code:

---
public class JSchTest {

    public JSchTest() {

        JSch jsch = new JSch();
        JSch.setLogger(new MyLogger());

        try {
            jsch.addIdentity("C:\\id_dsa");
        } catch (JSchException e) {
            e.printStackTrace();
            System.exit(1);
        }

        Session session = null;
        try {
            session = jsch.getSession("myuser", "myhost");
        } catch (JSchException e) {
            e.printStackTrace();
            System.exit(1);
        }

        Properties properties = new Properties();
        properties.put("StrictHostKeyChecking", "no");
        session.setConfig(properties);

        try {
            session.connect();
            System.out.println("Connected!");
        } catch (JSchException e) {
            e.printStackTrace();
            System.exit(1);
        }

        System.exit(0);
    }
---


MyLogger output:

---
INFO: Connecting to myhost port 22
INFO: Connection established
INFO: Remote version string: SSH-2.0-OpenSSH_4.3
INFO: Local version string: SSH-2.0-JSCH-0.1.42
INFO: CheckCiphers:
aes256-ctr,aes192-ctr,aes128-ctr,aes256-cbc,aes192-cbc,aes128-cbc,3des-ctr,arcfour,arcfour128,arcfour256
INFO: aes256-ctr is not available.
INFO: aes192-ctr is not available.
INFO: aes256-cbc is not available.
INFO: aes192-cbc is not available.
INFO: arcfour256 is not available.
INFO: SSH_MSG_KEXINIT sent
INFO: SSH_MSG_KEXINIT received
INFO: kex: server->client aes128-ctr hmac-md5 none
INFO: kex: client->server aes128-ctr hmac-md5 none
INFO: SSH_MSG_KEXDH_INIT sent
INFO: expecting SSH_MSG_KEXDH_REPLY
INFO: ssh_rsa_verify: signature true
WARN: Permanently added 'myhost' (RSA) to the list of known hosts.
INFO: SSH_MSG_NEWKEYS sent
INFO: SSH_MSG_NEWKEYS received
INFO: SSH_MSG_SERVICE_REQUEST sent
INFO: SSH_MSG_SERVICE_ACCEPT received
INFO: Authentications that can continue:
gssapi-with-mic,publickey,keyboard-interactive,password
INFO: Next authentication method: gssapi-with-mic
INFO: Authentications that can continue:
publickey,keyboard-interactive,password
INFO: Next authentication method: publickey
INFO: Authentications that can continue: password
INFO: Next authentication method: password
INFO: Disconnecting from devnagios port 22
com.jcraft.jsch.JSchException: Auth fail
    at com.jcraft.jsch.Session.connect(Session.java:452)
    at com.jcraft.jsch.Session.connect(Session.java:150)
    at JSchTest.<init>(JSchTest.java:38)
    at JSchTest.main(JSchTest.java:51)
---