Dart

Send Signed and Encrypted EDI Email (EDIFACT)

Demonstrates how to send a signed and encrypted EDI email (EDIFACT email). Dart

import 'package:chilkat/chilkat.dart';

void main() {
  // This example requires the Chilkat API to have been previously unlocked.
  // See Global Unlock Sample for sample code.

  //  The mailman object is used for sending and receiving email.
  final mailman = CkMailMan();

  //  Create a new email object
  final email = CkEmail();

  //  Build the basic EDI email where the body is the EDIFACT message:
  final ediMsg = 'UNB+IATB:1+6XPPC ...';
  final name = 'something';
  final filename = 'something';
  final charset = 'iso-8859-1';
  email.setEdifactBody(ediMsg, name, filename, charset);

  email.subject = 'This is the subject';
  email.from = 'Chilkat Admin <admin@chilkatsoft.com>';
  email.addTo('Chilkat Support', 'support@chilkatsoft.com');

  //  Indicate that the email should be sent signed.
  email.sendSigned = true;

  //  Tell the mailman to use a PFX file as a source for locating
  //  the certificate and private key required for signing.
  //  The certificate chosen for signing will be the one that
  //  matches the sender's email address, which also has
  //  a private key.  All intermediate certs in the chain of
  //  authentication, up to and including the root, will
  //  be included in the signature.
  try {
    mailman.addPfxSourceFile('/pfx_files/myCertAndPrivateKey.pfx', 'secret');
  } on ChilkatException catch (e) {
    print(e.lastErrorText);
    return;
  }

  //  Load the .cer file into a certificate object.
  //  When sending S/MIME encrypted email, it is the recipient's
  //  certificate that is used for encryption.  Only the public key
  //  is needed to encrypt.  The recipient is the only
  //  one possessing the private key, and therefore is the only
  //  one able to decrypt.
  final cert = CkCert();
  try {
    cert.loadFromFile('/certs/recipientCert.cer');
  } on ChilkatException catch (e) {
    print(e.lastErrorText);
    return;
  }

  //  Indicate that the email is to be sent encrypted.
  email.sendEncrypted = true;

  //  Indicate that we want 192-bit 3DES encryption:
  email.pkcs7CryptAlg = '3des';
  email.pkcs7KeyLength = 192;

  //  Specify the certificate to be used for encryption.
  email.setEncryptCert(cert);

  //  Tell the mailman to use an opaque signature (as opposed to a detached signature)
  mailman.opaqueSigning = true;

  //  SMTP server (use your settings and refer to the online
  //  reference  documentation for more options)
  mailman.smtpHost = 'smtp.mymailserver.com';
  mailman.smtpUsername = 'myLogin';
  mailman.smtpPassword = 'myPassword';
  mailman.smtpPort = 587;
  mailman.startTLS = true;

  //  Send the signed/encrypted EDI email
  try {
    mailman.sendEmail(email);
    print('Mail Sent!');
  } on ChilkatException catch (e) {
    print(e.lastErrorText);
  }
}