using System;
using System.Collections.Generic; using System.IO; using System.Linq; using System.Security.Cryptography; using System.Text; using System.Text.RegularExpressions; using System.Web.Security; namespace HuaTong.General.Utility { /// <summary> /// 加密工具类 /// </summary> public class EncryptHelper { //默认密钥 private static string AESKey = "[45/*YUIdse..e;]" ; private static string DESKey = "[&HdN72]" ; /// <summary> /// AES加密 /// </summary> public static string AESEncrypt(string value, string _aeskey = null ) { if (string.IsNullOrEmpty(_aeskey)) { _aeskey = AESKey; } byte[] keyArray = Encoding.UTF8.GetBytes(_aeskey); byte[] toEncryptArray = Encoding.UTF8.GetBytes(value); RijndaelManaged rDel = new RijndaelManaged(); rDel. Key = keyArray; rDel.Mode = CipherMode.ECB; rDel.Padding = PaddingMode.PKCS7; ICryptoTransform cTransform = rDel.CreateEncryptor(); byte[] resultArray = cTransform.TransformFinalBlock(toEncryptArray, 0, toEncryptArray.Length); return Convert .ToBase64String(resultArray, 0, resultArray.Length); } /// <summary> /// AES解密 /// </summary> public static string AESDecrypt(string value, string _aeskey = null ) { try { if (string.IsNullOrEmpty(_aeskey)) { _aeskey = AESKey; } byte[] keyArray = Encoding.UTF8.GetBytes(_aeskey); byte[] toEncryptArray = Convert .FromBase64String(value); 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 Encoding.UTF8.GetString(resultArray); } catch { return string.Empty; } } /// <summary> /// DES加密 /// </summary> public static string DESEncrypt(string value, string _deskey = null ) { if (string.IsNullOrEmpty(_deskey)) { _deskey = DESKey; } byte[] keyArray = Encoding.UTF8.GetBytes(_deskey); byte[] toEncryptArray = Encoding.UTF8.GetBytes(value); DESCryptoServiceProvider rDel = new DESCryptoServiceProvider(); rDel. Key = keyArray; rDel.Mode = CipherMode.ECB; rDel.Padding = PaddingMode.PKCS7; ICryptoTransform cTransform = rDel.CreateEncryptor(); byte[] resultArray = cTransform.TransformFinalBlock(toEncryptArray, 0, toEncryptArray.Length); return Convert .ToBase64String(resultArray, 0, resultArray.Length); } /// <summary> /// DES解密 /// </summary> public static string DESDecrypt(string value, string _deskey = null ) { try { if (string.IsNullOrEmpty(_deskey)) { _deskey = DESKey; } byte[] keyArray = Encoding.UTF8.GetBytes(_deskey); byte[] toEncryptArray = Convert .FromBase64String(value); DESCryptoServiceProvider rDel = new DESCryptoServiceProvider(); rDel. Key = keyArray; rDel.Mode = CipherMode.ECB; rDel.Padding = PaddingMode.PKCS7; ICryptoTransform cTransform = rDel.CreateDecryptor(); byte[] resultArray = cTransform.TransformFinalBlock(toEncryptArray, 0, toEncryptArray.Length); return Encoding.UTF8.GetString(resultArray); } catch { return string.Empty; } } public static string MD5(string value) { byte[] result = Encoding.UTF8.GetBytes(value); MD5 md5 = new MD5CryptoServiceProvider(); byte[] output = md5.ComputeHash(result); return BitConverter.ToString( output ). Replace ( "-" , "" ); } public static string HMACMD5(string value, string hmacKey) { HMACSHA1 hmacsha1 = new HMACSHA1(Encoding.UTF8.GetBytes(hmacKey)); byte[] result = System.Text.Encoding.UTF8.GetBytes(value); byte[] output = hmacsha1.ComputeHash(result); return BitConverter.ToString( output ). Replace ( "-" , "" ); } /// <summary> /// base64编码 /// </summary> /// < returns ></ returns > public static string Base64Encode(string value) { string result = Convert .ToBase64String(Encoding. Default .GetBytes(value)); return result; } /// <summary> /// base64解码 /// </summary> /// < returns ></ returns > public static string Base64Decode(string value) { string result = Encoding. Default .GetString( Convert .FromBase64String(value)); return result; } } }