www.pudn.com > boogiebot.zip > Sha1Hash.cs

/* 
 * Copyright ¸ 2005 Kele (fooleau@gmail.com) 
 * This library is free software; you can redistribute it and/or  
 * modify it under the terms of the GNU Lesser General Public  
 * License version 2.1 as published by the Free Software Foundation 
 * (the "LGPL"). 
 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY 
 * OF ANY KIND, either express or implied. 
 */ 
using System; 
using System.Text; 
using System.Security.Cryptography; 
 
namespace Foole.Crypt 
{ 
	/// 
 
	/// A wrapper for .NET's SHA1 class 
	/// This is designed to be compatable with my initial implementation 
	/// 
 
	public class Sha1Hash 
	{ 
		private SHA1 mSha; 
		private static byte[] ZeroArray = new byte[0]; 
 
		public Sha1Hash() 
		{ 
			mSha = SHA1.Create(); 
		} 
 
		public void Update(byte[] Data) 
		{ 
			mSha.TransformBlock(Data, 0, Data.Length, Data, 0); 
		} 
		 
		public void Update(string s) 
		{ 
			Update(Encoding.Default.GetBytes(s)); 
		} 
 
		public void Update(Int32 data) 
		{ 
			Update(BitConverter.GetBytes(data)); 
		} 
 
		public void Update(UInt32 data) 
		{ 
			Update(BitConverter.GetBytes(data)); 
		} 
		 
		public byte[] Final() 
		{ 
			mSha.TransformFinalBlock(ZeroArray, 0, 0); 
			return mSha.Hash; 
		} 
 
		public byte[] Final(byte[] Data) 
		{ 
			mSha.TransformFinalBlock(Data, 0, Data.Length); 
			return mSha.Hash; 
		} 
	} 
}