建设银行新版网站上线,建设摩托车官网报价表,淘宝网官网登录网页版,wordpress原因跳转最近一段時間,集團加強了資安方面的管理,所有敏感的配置字節都必須經過加密處理,把最近用到的幾個加解密類整理了一下,以做備忘. 其實這兩個類實現的方法差不多,只是有些細微區別: 對稱加密演算法類 SymmetricMethodHelperusing System;using System.IO;using System.Security.… 最近一段時間,集團加強了資安方面的管理,所有敏感的配置字節都必須經過加密處理,把最近用到的幾個加解密類整理了一下,以做備忘. 其實這兩個類實現的方法差不多,只是有些細微區別: 對稱加密演算法類 SymmetricMethodHelperusing System;using System.IO;using System.Security.Cryptography;using System.Text;/// summary/// 對稱加密演算法類/// /summarypublic class SymmetricMethodHelper { private SymmetricAlgorithm mobjCryptoService; private string Key; /// summary /// 對稱加密類的構造函數 /// /summary public SymmetricMethodHelper() { mobjCryptoService new RijndaelManaged(); Key Guz(%hj7x89H$yuBI0456FtmaT5fvHUFCy76*h%(HilJ$lhj!y6(*jkP87jH7; } /// summary /// 對稱加密類的構造函數 /// /summary public SymmetricMethodHelper(string key) { mobjCryptoService new RijndaelManaged(); Key key Guz(%hj7x89H$yuBI0456FtmaT5fvHUFCy76*h%(HilJ$lhj!y6(*jkP87jH7; } /// summary /// 獲得密鑰 /// /summary /// returns密鑰/returns private byte[] GetLegalKey() { string sTemp Key; mobjCryptoService.GenerateKey(); byte[] bytTemp mobjCryptoService.Key; int KeyLength bytTemp.Length; if (sTemp.Length KeyLength) sTemp sTemp.Substring(0, KeyLength); else if (sTemp.Length KeyLength) sTemp sTemp.PadRight(KeyLength, ); return ASCIIEncoding.ASCII.GetBytes(sTemp); } /// summary /// 獲得初始向量IV /// /summary /// returns初試向量IV/returns private byte[] GetLegalIV() { string sTemp E4ghj*Ghg7!rNIfb95GUY86GfghUb#er57HBh(u%g6HJ($jhWk7!hg4ui%$hjk; mobjCryptoService.GenerateIV(); byte[] bytTemp mobjCryptoService.IV; int IVLength bytTemp.Length; if (sTemp.Length IVLength) sTemp sTemp.Substring(0, IVLength); else if (sTemp.Length IVLength) sTemp sTemp.PadRight(IVLength, ); return ASCIIEncoding.ASCII.GetBytes(sTemp); } /// summary /// 加密方法 /// /summary /// param nameSource待加密的串/param /// returns經過加密的串/returns public string Encrypto(string Source) { byte[] bytIn UTF8Encoding.UTF8.GetBytes(Source); MemoryStream ms new MemoryStream(); mobjCryptoService.Key GetLegalKey(); mobjCryptoService.IV GetLegalIV(); ICryptoTransform encrypto mobjCryptoService.CreateEncryptor(); CryptoStream cs new CryptoStream(ms, encrypto, CryptoStreamMode.Write); cs.Write(bytIn, 0, bytIn.Length); cs.FlushFinalBlock(); ms.Close(); byte[] bytOut ms.ToArray(); return Convert.ToBase64String(bytOut); } /// summary /// 解密方法 /// /summary /// param nameSource待解密的串/param /// returns經過解密的串/returns public string Decrypto(string Source) { byte[] bytIn Convert.FromBase64String(Source); MemoryStream ms new MemoryStream(bytIn, 0, bytIn.Length); mobjCryptoService.Key GetLegalKey(); mobjCryptoService.IV GetLegalIV(); ICryptoTransform encrypto mobjCryptoService.CreateDecryptor(); CryptoStream cs new CryptoStream(ms, encrypto, CryptoStreamMode.Read); StreamReader sr new StreamReader(cs); return sr.ReadToEnd(); } } Codeusing System;using System.Text;using System.IO;using System.Security.Cryptography;public class EncryptUtil { /// summary /// Des加密 /// /summary /// param nameclearText/param /// returns/returns public static string DesEncrypt(string clearText) { byte[] byKey System.Text.ASCIIEncoding.UTF8.GetBytes(KEY_64); byte[] byIV System.Text.ASCIIEncoding.UTF8.GetBytes(IV_64); DESCryptoServiceProvider cryptoProvider new DESCryptoServiceProvider(); MemoryStream memStream new MemoryStream(); //以寫模式 把數據流和要加密的數據流建立連接 CryptoStream cryStream new CryptoStream(memStream, cryptoProvider.CreateEncryptor(byKey, byIV), CryptoStreamMode.Write); //將要加密的數據轉換為UTF8編碼的數組 byte[] clearTextArray Encoding.UTF8.GetBytes(clearText); //加密 並寫到 内存流memStream中 cryStream.Write(clearTextArray, 0, clearTextArray.Length); //清空緩衝區 cryStream.FlushFinalBlock(); //將8位無符號整數數組 轉換為 等效的System.String 的形式. return Convert.ToBase64String(memStream.ToArray()); } /// summary /// Des解密 /// /summary /// param namedata/param /// returns/returns public static string DesDecrypt(string encryptedText) { byte[] byKey System.Text.ASCIIEncoding.UTF8.GetBytes(KEY_64); byte[] byIV System.Text.ASCIIEncoding.UTF8.GetBytes(IV_64); // byte[] byteArray Convert.FromBase64String(encryptedText); MemoryStream memStream new MemoryStream(); DESCryptoServiceProvider cryptoProvider new DESCryptoServiceProvider(); CryptoStream cryStream new CryptoStream(memStream, cryptoProvider.CreateDecryptor(byKey, byIV), CryptoStreamMode.Write); cryStream.Write(byteArray, 0, byteArray.Length); //清空緩衝區 cryStream.FlushFinalBlock(); System.Text.Encoding encoding new System.Text.UTF8Encoding(); //把字節數組轉換為 等效的System.String 的形式. return encoding.GetString(memStream.ToArray()); } /// summary /// Des加密,功能同DesEncrypt相同 /// /summary /// param nameclearText/param /// returns/returns public static string DesEncode(string clearText) { byte[] byKey System.Text.ASCIIEncoding.ASCII.GetBytes(KEY_64); byte[] byIV System.Text.ASCIIEncoding.ASCII.GetBytes(IV_64); DESCryptoServiceProvider cryptoProvider new DESCryptoServiceProvider(); MemoryStream memStream new MemoryStream(); CryptoStream cryStream new CryptoStream(memStream, cryptoProvider.CreateEncryptor(byKey, byIV), CryptoStreamMode.Write); StreamWriter sw new StreamWriter(cryStream); sw.Write(clearText); sw.Flush(); cryStream.FlushFinalBlock(); sw.Flush(); return Convert.ToBase64String(memStream.GetBuffer(), 0, (int)memStream.Length); } /// summary /// Des解密,功能同DesDecrypt相同 /// /summary /// param nameencryptedText/param /// returns/returns public static string DesDecode(string encryptedText) { byte[] byKey System.Text.ASCIIEncoding.ASCII.GetBytes(KEY_64); byte[] byIV System.Text.ASCIIEncoding.ASCII.GetBytes(IV_64); byte[] byteArray; try { byteArray Convert.FromBase64String(encryptedText); } catch { return null; } DESCryptoServiceProvider cryptoProvider new DESCryptoServiceProvider(); MemoryStream memStream new MemoryStream(byteArray); CryptoStream cryStream new CryptoStream(memStream, cryptoProvider.CreateDecryptor(byKey, byIV), CryptoStreamMode.Read); StreamReader sr new StreamReader(cryStream); return sr.ReadToEnd(); } private const string KEY_64 MyPubKey; //公鈅 private const string IV_64 MyPriKey; //私鈅,注意了:是8个字符64位 } 注意這兩段代碼標注為紅色部分的差异,其中SymmetricMethodHelper類支持超過8位的私鑰,而EncryptUtil類不支持超過8位的私鑰. 转载于:https://www.cnblogs.com/Jebel/archive/2008/08/13/1267002.html
