/////////////////////////////////////////////////////////////////////////////////////////////// // // This File is Part of the CallButler Open Source PBX (http://www.codeplex.com/callbutler // // Copyright (c) 2005-2008, Jim Heising // All rights reserved. // // Redistribution and use in source and binary forms, with or without modification, // are permitted provided that the following conditions are met: // // * Redistributions of source code must retain the above copyright notice, // this list of conditions and the following disclaimer. // // * Redistributions in binary form must reproduce the above copyright notice, // this list of conditions and the following disclaimer in the documentation and/or // other materials provided with the distribution. // // * Neither the name of Jim Heising nor the names of its contributors may be // used to endorse or promote products derived from this software without specific prior // written permission. // // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND // ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED // WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. // IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, // INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT // NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR // PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, // WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) // ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE // POSSIBILITY OF SUCH DAMAGE. // /////////////////////////////////////////////////////////////////////////////////////////////// using System; using System.Security.Cryptography; using System.Text; using System.Globalization; using System.IO; namespace WOSI.Utilities { /// <summary> /// Summary description for CryptoUtils. /// </summary> public class CryptoUtils { public static byte[] GetFileBytes(string filename) { if (File.Exists(filename)) { FileStream fs = File.Open(filename, FileMode.Open, FileAccess.Read); byte[] fileBytes = new byte[fs.Length]; fs.Read(fileBytes, 0, (int)fs.Length); fs.Close(); return fileBytes; } return null; } public static string GetByteChecksum(byte[] bytes) { MD5CryptoServiceProvider md5 = new MD5CryptoServiceProvider(); byte[] hashValue = md5.ComputeHash(bytes); return Convert.ToBase64String(hashValue); } public static string GetFileChecksum(string filename) { if (File.Exists(filename)) { MD5CryptoServiceProvider md5 = new MD5CryptoServiceProvider(); byte[] fileBytes = GetFileBytes(filename); return GetByteChecksum(fileBytes); } return ""; } } }