SSH Authenticate with a SecureString Password and Private Key

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Demonstrates the Chilkat Ssh.AuthenticateSecPwPk method, which performs the same combined password/private-key authentication as AuthenticatePwPk but receives the username and password as SecureString objects. The third argument is the SshKey private key.

Note: The private-key path is relative to the application's current working directory. Supply the path to your own key file.

Background: This is the SecureString form of multi-factor SSH authentication: the password is held encrypted in memory and combined with a private key for servers that require both. It is the most protective option when a deployment mandates two-factor SSH and you also want to minimize plaintext credential exposure in the process.

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    success := false

    //  Demonstrates the Ssh.AuthenticateSecPwPk method, which authenticates using SecureString login
    //  and password objects together with a private key.  The 1st argument is the username, the 2nd
    //  is the password, and the 3rd is an SshKey private key.

    ssh := chilkat.NewSsh()

    //  Connect to the SSH server.  Port 22 is the usual SSH port.
    sshPort := 22
    success = ssh.Connect("ssh.example.com",sshPort)
    if success == false {
        fmt.Println(ssh.LastErrorText())
        ssh.DisposeSsh()
        return
    }

    //  Normally you would not hard-code the password in source.  You should instead obtain it
    //  from an interactive prompt, environment variable, or a secrets vault.
    password := "mySshPassword"

    //  Load the SSH private key.  LoadText reads the file's text, which is then imported.
    privKey := chilkat.NewSshKey()
    keyStr := privKey.LoadText("qa_data/id_rsa")
    if privKey.LastMethodSuccess() == false {
        fmt.Println(privKey.LastErrorText())
        ssh.DisposeSsh()
        privKey.DisposeSshKey()
        return
    }

    success = privKey.FromOpenSshPrivateKey(*keyStr)
    if success == false {
        fmt.Println(privKey.LastErrorText())
        ssh.DisposeSsh()
        privKey.DisposeSshKey()
        return
    }

    //  Place the login and password into SecureString objects.
    secureLogin := chilkat.NewSecureString()
    secureLogin.Append("mySshLogin")
    securePassword := chilkat.NewSecureString()
    securePassword.Append(password)

    success = ssh.AuthenticateSecPwPk(secureLogin,securePassword,privKey)
    if success == false {
        fmt.Println(ssh.LastErrorText())
        ssh.DisposeSsh()
        privKey.DisposeSshKey()
        secureLogin.DisposeSecureString()
        securePassword.DisposeSecureString()
        return
    }

    fmt.Println("Authenticated.")

    ssh.Disconnect()

    ssh.DisposeSsh()
    privKey.DisposeSshKey()
    secureLogin.DisposeSecureString()
    securePassword.DisposeSecureString()