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Dart

Set an FTPS Client Certificate from PEM

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Demonstrates the Chilkat Ftp2.SetSslClientCertPem method, which configures a client certificate and private key from PEM. The first argument may be the PEM text or a PEM file path, and the second is the private-key password (empty when the key is not encrypted).

Note: The local paths are relative to the application's current working directory. Absolute paths may also be used. Supply the paths appropriate to your own environment.

Background: This is the PEM-based form of setting the mutual-TLS client certificate — convenient when the certificate and key already live in a .pem file, the common format from OpenSSH and Unix tooling. Use SetSslClientCertPfx instead for a PKCS#12 .pfx/.p12 bundle. As with any client certificate, set it before connecting.

Chilkat Dart Downloads

Dart
import 'package:chilkat/chilkat.dart';

void main() {
  // Demonstrates the Ftp2.SetSslClientCertPem method, which configures a client certificate and
  // private key from PEM.  The 1st argument is the PEM text or a PEM file path, and the 2nd is the
  // private-key password (empty when the key is not encrypted).

  final ftp = CkFtp2();

  ftp.hostname = 'ftp.example.com';
  ftp.username = 'myFtpLogin';

  // 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.
  ftp.password = 'myPassword';

  // Use explicit FTPS (AUTH TLS) on the standard FTP port.
  ftp.authTls = true;

  // Provide the PEM client certificate before connecting.  The password should come from a secure
  // source rather than being hard-coded.
  final pemPassword = 'myPemPassword';
  try {
    ftp.setSslClientCertPem('qa_data/client.pem', pemPassword);
  } on ChilkatException catch (e) {
    print(e.lastErrorText);
    return;
  }

  try {
    ftp.connect();
  } on ChilkatException catch (e) {
    print(e.lastErrorText);
    return;
  }

  print('Connected with a PEM client certificate.');

  try {
    ftp.disconnect();
  } on ChilkatException catch (e) {
    print(e.lastErrorText);
    return;
  }
}