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这篇文章主要介绍在ASP.NET中如何实现DES加密与解密MD5加密功能,文中介绍的非常详细,具有一定的参考价值,感兴趣的小伙伴们一定要看完!
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public class TrialHelper { //默认密钥向量 private static byte[] Keys = { 0x12, 0x34, 0x56, 0x78, 0x90, 0xAB, 0xCD, 0xEF }; ////// DES加密字符串 /// /// 待加密的字符串 /// 加密密钥,要求为8位 ///加密成功返回加密后的字符串,失败返回源串 public static string EncryptDES( string encryptString, string encryptKey = "" ) { try { if (string.IsNullOrEmpty(encryptKey) || encryptKey.Length < 8) { encryptKey = "winform01"; } byte[] rgbKey = Encoding.UTF8.GetBytes(encryptKey.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; } } ////// DES解密字符串 /// /// 待解密的字符串 /// 解密密钥,要求为8位,和加密密钥相同 ///解密成功返回解密后的字符串,失败返源串 public static string DecryptDES( string decryptString, string decryptKey = "" ) { try { if (string.IsNullOrEmpty(decryptKey) || decryptKey.Length < 8) { decryptKey = "winform01"; } byte[] rgbKey = Encoding.UTF8.GetBytes(decryptKey.Substring(0, 8)); 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; } } ////// MD5数据加密 /// /// 加密字段 ///加密后的字符串 public static string GetMD5( string sDataIn ) { System.Security.Cryptography.MD5CryptoServiceProvider md5 = new System.Security.Cryptography.MD5CryptoServiceProvider(); byte[] bytValue, bytHash; bytValue = System.Text.Encoding.UTF8.GetBytes(sDataIn); bytHash = md5.ComputeHash(bytValue); md5.Clear(); string sTemp = ""; for (int i = 0; i < bytHash.Length; i++) { sTemp += bytHash[i].ToString("x").PadLeft(2, '0'); } return sTemp; } }
调用:
//获取登录信息 loginRecord.Name = tbName.Text.Trim(); loginRecord.MD5Pwd = TrialHelper.GetMD5(tbPwd.Password); //保存到数据库MD5加密方式 loginRecord.Pwd = TrialHelper.EncryptDES(tbPwd.Password);//记住密码des加密方式,保存到本地
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