字符串加密解密

using System;using System.Data;using System.Configuration;using System.Web;using System.Web.Security;using System.Web.UI;using System.Web.UI.WebControls;using System.Web.UI.WebControls.WebParts;using System.Web.UI.HtmlControls;using System.Security.Cryptography;using System.IO;/// <summary>/// 密码控制/// </summary>public class Class_Password{ const string KEY_64 = "VavicApp";//注意了，是8个字符，64位 const string IV_64 = "VavicApp"; public Class_Password(){//// TODO: 在此处添加构造函数逻辑// } #region EnCode 加密 /// <summary> /// EnCode 加密 /// </summary> /// <param name="str">要加密的字符串</param> /// <returns></returns> public string EnCode(string data) { byte[] byKey = System.Text.ASCIIEncoding.ASCII.GetBytes(KEY_64); byte[] byIV = System.Text.ASCIIEncoding.ASCII.GetBytes(IV_64); DESCryptoServiceProvider cryptoProvider = new DESCryptoServiceProvider(); int i = cryptoProvider.KeySize; MemoryStream ms = new MemoryStream(); CryptoStream cst = new CryptoStream(ms, cryptoProvider.CreateEncryptor(byKey,byIV), CryptoStreamMode.Write); StreamWriter sw = new StreamWriter(cst); sw.Write(data); sw.Flush(); cst.FlushFinalBlock(); sw.Flush(); return Convert.ToBase64String(ms.GetBuffer(), 0, (int)ms.Length); } #endregion #region DeCode 解密 /// <summary> /// DeCode 解密 /// </summary> /// <param name="str">要解密的字符串</param> /// <returns></returns> public string DeCode(string data) { byte[] byKey = System.Text.ASCIIEncoding.ASCII.GetBytes(KEY_64); byte[] byIV = System.Text.ASCIIEncoding.ASCII.GetBytes(IV_64); byte[] byEnc; try { byEnc = Convert.FromBase64String(data); } catch { return null; } DESCryptoServiceProvider cryptoProvider = new DESCryptoServiceProvider(); MemoryStream ms = new MemoryStream(byEnc); CryptoStream cst = new CryptoStream(ms, cryptoProvider.CreateDecryptor(byKey,byIV), CryptoStreamMode.Read); StreamReader sr = new StreamReader(cst); return sr.ReadToEnd(); } #endregion}

 

using System;using System.Collections.Generic;using System.Text;using System.Security.Cryptography;//Cryptography密码术namespace DAL{ public class Encry { public Encry() { } #region AES加密 public static string Encrypt(string toEncrypt) { byte[] keyArray = UTF8Encoding.UTF8.GetBytes("12345678901234567890123456789012"); byte[] toEncryptArray = UTF8Encoding.UTF8.GetBytes(toEncrypt); RijndaelManaged rDel = new RijndaelManaged();//using System.Security.Cryptography; rDel.Key = keyArray; rDel.Mode = CipherMode.ECB;//using System.Security.Cryptography; rDel.Padding = PaddingMode.PKCS7;//using System.Security.Cryptography; ICryptoTransform cTransform = rDel.CreateEncryptor();//using System.Security.Cryptography; byte[] resultArray = cTransform.TransformFinalBlock(toEncryptArray, 0, toEncryptArray.Length); return Convert.ToBase64String(resultArray, 0, resultArray.Length); } #endregion AES加密 #region AES解密 public static string Decrypt(string toDecrypt) { byte[] keyArray = UTF8Encoding.UTF8.GetBytes("12345678901234567890123456789012"); byte[] toEncryptArray = Convert.FromBase64String(toDecrypt); RijndaelManaged rDel = new RijndaelManaged(); rDel.Key = keyArray; rDel.Mode = CipherMode.ECB; rDel.Padding = PaddingMode.PKCS7; ICryptoTransform cTransform = rDel.CreateDecryptor(); byte[] resultArray = cTransform.TransformFinalBlock(toEncryptArray, 0, toEncryptArray.Length); return UTF8Encoding.UTF8.GetString(resultArray); } #endregion AES解密 }}