C# Java 加密解密
C# AES加密解密
1 public static string Encrypt(string key, string clearText) 2 { 3 byte[] clearBytes = Encoding.Unicode.GetBytes(clearText); 4 using (Aes encryptor = Aes.Create()) 5 { 6 Rfc2898DeriveBytes pdb = new Rfc2898DeriveBytes(key, new byte[] { 0x49, 0x76, 0x61, 0x6e, 0x20, 0x4d, 0x65, 0x64 }); 7 encryptor.Key = pdb.GetBytes(32); 8 encryptor.IV = pdb.GetBytes(16); 9 using (MemoryStream ms = new MemoryStream()) 10 { 11 using (CryptoStream cs = new CryptoStream(ms, encryptor.CreateEncryptor(), CryptoStreamMode.Write)) 12 { 13 cs.Write(clearBytes, 0, clearBytes.Length); 14 cs.Close(); 15 } 16 clearText = Convert.ToBase64String(ms.ToArray()); 17 } 18 } 19 return clearText; 20 } 21 public static string Decrypt(string key, string cipherText) 22 { 23 cipherText = cipherText.Replace(" ", "+"); 24 byte[] cipherBytes = Convert.FromBase64String(cipherText); 25 using (Aes encryptor = Aes.Create()) 26 { 27 Rfc2898DeriveBytes pdb = new Rfc2898DeriveBytes(key, new byte[] { 0x49, 0x76, 0x61, 0x6e, 0x20, 0x4d, 0x65, 0x64 }); 28 encryptor.Key = pdb.GetBytes(32); 29 encryptor.IV = pdb.GetBytes(16); 30 using (MemoryStream ms = new MemoryStream()) 31 { 32 using (CryptoStream cs = new CryptoStream(ms, encryptor.CreateDecryptor(), CryptoStreamMode.Write)) 33 { 34 cs.Write(cipherBytes, 0, cipherBytes.Length); 35 cs.Close(); 36 } 37 cipherText = Encoding.Unicode.GetString(ms.ToArray()); 38 } 39 } 40 return cipherText; 41 }
C# DES加密解密
/// <summary> /// DES加密字符串 /// </summary> /// <param name="encryptString">待加密的字符串 /// <param name="encryptKey">加密密钥,要求为8位 /// <returns>加密成功返回加密后的字符串,失败返回源串</returns> public static string EncryptDES(string encryptString, string encryptKey) { try { byte[] rgbKey = Encoding.UTF8.GetBytes(encryptKey); byte[] rgbIV = { 0x12, 0x34, 0x56, 0x78, 0x90, 0xAB, 0xCD, 0xEF }; byte[] inputByteArray = Encoding.UTF8.GetBytes(encryptString); using (DESCryptoServiceProvider dCSP = new DESCryptoServiceProvider()) { MemoryStream mStream = new MemoryStream(); using (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 name="decryptKey">解密密钥,要求为8位,和加密密钥相同 /// <returns>解密成功返回解密后的字符串,失败返回空</returns> public static string DecryptDES(string decryptString, string decryptKey) { try { byte[] inputByteArray = Convert.FromBase64String(decryptString); byte[] rgbKey = Encoding.UTF8.GetBytes(decryptKey); byte[] rgbIV = { 0x12, 0x34, 0x56, 0x78, 0x90, 0xAB, 0xCD, 0xEF }; using (DESCryptoServiceProvider des = new DESCryptoServiceProvider()) { // 如果加密是没设置模式和填充,则解密也不需要设置 //des.Mode = CipherMode.ECB; //des.Padding = PaddingMode.PKCS7; MemoryStream mStream = new MemoryStream(); using (CryptoStream cStream = new CryptoStream(mStream, des.CreateDecryptor(rgbKey, rgbIV), CryptoStreamMode.Write)) { cStream.Write(inputByteArray, 0, inputByteArray.Length); cStream.FlushFinalBlock(); } return Encoding.UTF8.GetString(mStream.ToArray()); } } catch (Exception e) { return string.Empty; ; } }