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asked in Java FTP by (120 points)
I am getting below exception while connecting to SFTP server with public key.

import java.io.File;

import java.io.FileInputStream;

import java.io.IOException;

import java.io.InputStream;

import com.enterprisedt.net.ftp.ssh.SSHFTPClient;

public class FtpFile {

public static void main(String[] args) {

InputStream privateKeyStream = null;

    try {

   

    File f = new File("/XX/yy/zz.asc");

    privateKeyStream = new FileInputStream(f);

    SSHFTPClient SFTP = new SSHFTPClient();

    SFTP.setRemoteHost("XXX");

    SFTP.setRemotePort(0);

    SFTP.setAuthentication(privateKeyStream, "XXX", "YYYY");

    SFTP.getValidator().setHostValidationEnabled(false);

   

    SFTP.connect();

    } catch (Exception e) {

    e.printStackTrace();

    } finally {

    if (privateKeyStream != null)

    try {

    privateKeyStream.close();

    } catch (IOException e) {

    e.printStackTrace();

    }

    }

}

}

Exception : com.enterprisedt.net.j2ssh.transport.publickey.InvalidSshKeyException : Can't read key due to internal IO problems:

com.enterprisedt.net.j2ssh.transport.publickey.InvalidSshKeyException: Can't read key due to internal IO problems:

at com.enterprisedt.net.j2ssh.openssh.OpenSSHPrivateKeyFormat.decryptKeyblob(Unknown Source)

at com.enterprisedt.net.j2ssh.transport.publickey.SshPrivateKeyFile.toPrivateKey(Unknown Source)

at com.enterprisedt.net.ftp.ssh.SCPClient.setAuthentication(Unknown Source)
commented by (153k points)
Most likely zz.asc is not in a standard private key format. Try loading it in PuTTY.
commented by (120 points)
Then what are all the Key formats supported. Please list out.

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