#region License Information /* HeuristicLab * Copyright (C) 2002-2019 Heuristic and Evolutionary Algorithms Laboratory (HEAL) * * This file is part of HeuristicLab. * * HeuristicLab is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * HeuristicLab is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with HeuristicLab. If not, see . */ #endregion using System; using System.Security.Cryptography; using System.Text; namespace HeuristicLab.Clients.Common { /// /// Provides functionality for encrypting and decrypting strings. /// Based on the code from http://weblogs.asp.net/jgalloway/archive/2008/04/13/encrypting-passwords-in-a-net-app-config-file.aspx /// public static class CryptoService { private static byte[] entropy = System.Text.Encoding.Unicode.GetBytes("Salt Is Not A Password"); public static string EncryptString(string input) { byte[] encryptedData = ProtectedData.Protect( Encoding.Unicode.GetBytes(input), entropy, DataProtectionScope.CurrentUser); return Convert.ToBase64String(encryptedData); } public static string DecryptString(string encryptedData) { try { byte[] decryptedData = System.Security.Cryptography.ProtectedData.Unprotect( Convert.FromBase64String(encryptedData), entropy, System.Security.Cryptography.DataProtectionScope.CurrentUser); return System.Text.Encoding.Unicode.GetString(decryptedData); } catch (CryptographicException) { // we assume here that the password was saved in clear text in a previous HL version return encryptedData; } catch (FormatException) { return encryptedData; } } } }