Dart

Add a PFX Source from BinData

Demonstrates the Chilkat Email.AddPfxSourceBd method, which adds PFX data held in a BinData object to the list of certificate and private-key sources used during decryption or signing. The second argument is the PFX password. Call it before obtaining the encrypted email so Chilkat can decrypt it automatically. This example loads a PFX into a BinData, adds it, and then loads an encrypted email.

Background: This is the in-memory (BinData) counterpart to AddPfxSourceFile. It is the right choice when the PFX bytes come from somewhere other than a file — a database, a secrets manager, or an HTTP download — letting you supply the certificate and private key without first writing them to disk (which is preferable for sensitive key material).

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Dart

import 'package:chilkat/chilkat.dart';

void main() {
  // Demonstrates the AddPfxSourceBd method, which adds PFX data (held in a BinData) to the
  // list of certificate and private-key sources used during decryption or signing.  The
  // second argument is the PFX password.  Call it before obtaining the encrypted email.

  final email = CkEmail();

  // Load PFX data into a BinData object.
  final bdPfx = CkBinData();
  try {
    bdPfx.loadFile('qa_data/certs/decryption.pfx');
  } on ChilkatException catch (e) {
    print(e.lastErrorText);
    return;
  }

  // Add the PFX as a source of the certificate + private key.
  try {
    email.addPfxSourceBd(bdPfx, 'pfx_password');
  } on ChilkatException catch (e) {
    print(e.lastErrorText);
    return;
  }

  // Load an encrypted email; Chilkat decrypts it using the PFX source.
  try {
    email.loadEml('qa_data/eml/encrypted.eml');
  } on ChilkatException catch (e) {
    print(e.lastErrorText);
    return;
  }

  print('Decrypted = ${email.decrypted}');

  // Note: Paths such as "qa_data/..." are relative local filesystem paths,
  // relative to the current working directory of the running application.
}