加密函数代码,CSharp代码库,德仔网

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【CSharp】加密函数
作者:Dezai.CN / 发布于2013/7/16/ 439

	using System;
	using System.Security.Cryptography;
	using System.IO;
	using System.Text;

	//WHB_STUDIO专用加密解密类
	public class WhbEncrypt
	{
	 private static string key = "12345678";//本类的密钥，可更改为任意字母或数字，但字串总长度必须为8位。
	 //Keys为默认密钥向量，每个元素均可更改，但需保证16进制形式，元素个数为8
	 private static byte[] Keys = {0x12,0x23,0x56,0x67,0x90,0xAB,0xCD,0xEF};

	 /// <summary>
	 /// 加密字符串
	 /// </summary>
	 /// <param name="encryptString">待加密的字符串</param>
	 /// <returns>加密成功返回加密后的字符串，失败返回源串</returns>
	 public static string Encrypt(string encryptString)
	 {
	 try
	 {
	 byte[] rgbKey = Encoding.UTF8.GetBytes(key.Substring(0, 8));
	 byte[] rgbIV = Keys;
	 byte[] inputByteArray = Encoding.UTF8.GetBytes(encryptString);
	 DESCryptoServiceProvider dCSP = new DESCryptoServiceProvider();
	 MemoryStream mStream = new MemoryStream();
	 CryptoStream cStream = new CryptoStream(mStream, dCSP.CreateEncryptor(rgbKey, rgbIV), CryptoStreamMode.Write);
	 cStream.Write(inputByteArray, 0, inputByteArray.Length);
	 cStream.FlushFinalBlock();
	 return Convert.ToBase64String(mStream.ToArray());
	 }
	 catch
	 {
	 return encryptString;
	 }
	 }

	 /// <summary>
	 /// DES解密字符串
	 /// </summary>
	 /// <param name="decryptString">待解密的字符串</param>
	 /// <param name="key">解密密钥,要求为8位,和加密密钥相同</param>
	 /// <returns>解密成功返回解密后的字符串，失败返源串</returns>
	 public static string Decrypt(string decryptString)
	 {
	 try
	 {
	 byte[] rgbKey = Encoding.UTF8.GetBytes(key);
	 byte[] rgbIV = Keys;
	 byte[] inputByteArray = Convert.FromBase64String(decryptString);
	 DESCryptoServiceProvider DCSP = new DESCryptoServiceProvider();
	 MemoryStream mStream = new MemoryStream();
	 CryptoStream cStream = new CryptoStream(mStream, DCSP.CreateDecryptor(rgbKey, rgbIV), CryptoStreamMode.Write);
	 cStream.Write(inputByteArray, 0, inputByteArray.Length);
	 cStream.FlushFinalBlock();
	 return Encoding.UTF8.GetString(mStream.ToArray());
	 }
	 catch
	 {
	 return decryptString;
	 }
	 }

	 /// <summary>
	 /// 构造方法
	 /// </summary>
	 public WhbEncrypt()
	 {
	 }

	}


	2、使用方法：

	textBox1.Text = WhbEncrypt.Encrypt(textBox1.Text);
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