anchor.diff:  
   import 'package:encrypt/encrypt.dart';
   import 'package:flutter/material.dart';
  -import 'package:flutter/services.dart' show rootBundle;
   import 'package:http/http.dart' as http;
  -import 'package:pointycastle/api.dart' as pc;
  -import 'package:pointycastle/asymmetric/api.dart';
  -import 'package:pointycastle/asymmetric/pkcs1.dart';
  -import 'package:pointycastle/asymmetric/rsa.dart';
  +import 'package:pointycastle/asymmetric/oaep.dart';
  +import 'package:pointycastle/pointycastle.dart' as pc;
   import 'package:xml/xml.dart' as xml;
   
   // QA Environment
  
positive.code:   }
  }
  
  void doLogin(String email, String password) async {
    final publicKeyFile = await rootBundle.loadString('assets/public_key.txt');
    final rsaParser = RSAKeyParser();
    final RSAPublicKey publicKey = rsaParser.parse(publicKeyFile);
  
    final encrypter = Encrypter(RSA(publicKey: publicKey));
    Encrypted encryptedPassword = encrypter.encrypt(password);
    //print(encryptedPassword.base64);
  
    Codec<String, String> stringToBase64 = utf8.fuse(base64);
    final String userPassword = email + ':' + encryptedPassword.base64;
    final String base64EncodedWithEncryptedPassword =
        stringToBase64.encode(userPassword);
    //print('encoded user:pass ' + base64EncodedWithEncryptedPassword);
    String ecpIdpPackage;
    String ecpEndpoint;
  
    var cipher = PKCS1Encoding(RSAEngine());
    cipher.init(true, pc.PublicKeyParameter<RSAPublicKey>(publicKey));
    Uint8List output = cipher.process(utf8.encode(password));
    var base64EncodedText = base64Encode(output);
    final String res = stringToBase64.encode(email + ':' + base64EncodedText);
    print(res);
  
    // Step 1
    // get ECP endpoint URL
    getResponseConsumerUrl('get response consumer URL', ecpTokenUrl, headerValues)
        .then((response) {
      ecpIdpPackage = response; // save for use in request to ECP
      print('ecpIdPackage ' + ecpIdpPackage);
      // parse SOAP XML for 'responseConsumerURL' attribute value
      var document = xml.parse(response);
  
  
negative.code:     };
      getSamlAssertion('Get SAML Assertion', idpUrl, headers, ecpIdpPackage)
          .then((response) {
        debugPrint('***');
        debugPrint(idpUrl);
        debugPrint(headers.toString());
        debugPrint(ecpIdpPackage);
        debugPrint('response: ' + response);
        debugPrint('***');
      });
    });
  }
  