Dart Requires Chilkat v11.0.0+

RSA Encrypt and OpenSSL Decrypt

See more OpenSSL Examples

Demonstrates how to use Chilkat to RSA encrypt, and then use OpenSSL to decrypt. Dart

import 'package:chilkat/chilkat.dart';

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

  final rsa = CkRsa();

  final privKey = CkPrivateKey();
  rsa.genKey(2048, privKey);
  privKey.savePkcs8PemFile('qa_output/privKey.pem');

  final pubKey = CkPublicKey();
  privKey.toPublicKey(pubKey);

  rsa.encodingMode = 'base64';
  final plainText = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz01234567890';
  final bUsePrivateKey = false;
  rsa.usePublicKey(pubKey);
  final encryptedStr = rsa.encryptStringENC(plainText, bUsePrivateKey);

  final bd = CkBinData();
  bd.appendEncoded(encryptedStr, 'base64');
  bd.writeFile('qa_output/enc.dat');

  // The OpenSSL command to decrypt is:
  // openssl pkeyutl -in enc.dat -inkey privKey.pem -keyform PEM -pkeyopt rsa_padding_mode:pkcs1 -decrypt

  print('OK');
}