Dart

Load a Private Key from XML Text

Demonstrates the Chilkat PrivateKey.LoadXml method, which loads a private key from XML text. The only argument is the XML string. Supported roots include RSAKeyValue, DSAKeyValue, ECCKeyValue, and Ed25519KeyValue.

Background: XML key representations such as RSAKeyValue come from the .NET/XML-DSIG world, where keys are exchanged as XML elements. This loads that form — the inverse of GetXml — which is handy for interoperating with .NET code or systems built around XML signatures. It is a plaintext format, so protect the XML like any unencrypted key material.

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Dart

import 'package:chilkat/chilkat.dart';

void main() {
  // Demonstrates the PrivateKey.LoadXml method, which loads a private key from XML text.  The only
  // argument is the XML string.  Supported roots include RSAKeyValue, DSAKeyValue, ECCKeyValue,
  // and Ed25519KeyValue.

  final privKey = CkPrivateKey();

  // The XML text of a private key (for example as produced by GetXml).
  final xmlText = '<RSAKeyValue><Modulus>...</Modulus><Exponent>AQAB</Exponent>...</RSAKeyValue>';

  try {
    privKey.loadXml(xmlText);
  } on ChilkatException catch (e) {
    print(e.lastErrorText);
    return;
  }

  print('Loaded a ${privKey.keyType} private key.');
}