Dart Requires Chilkat v11.0.0+

Get Base64 Public Key from Private Key

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Demonstrates how to get the public key in base64 format from a private key. Dart

import 'package:chilkat/chilkat.dart';

void main() {
  // Load a private key from base64.
  final bd = CkBinData();
  bd.appendEncoded('MHQCA....n0Q==', 'base64');

  final privKey = CkPrivateKey();
  try {
    privKey.loadAnyFormat(bd, '');
  } on ChilkatException catch (e) {
    print(e.lastErrorText);
    return;
  }

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

  final pubKeyBase64 = pubKey.getEncoded(true, 'base64');
  print(pubKeyBase64);
}