public string Encrypt(string str) { string result = null; if (str == null) { return result; } try { byte[] array0 = Encoding.ASCII.GetBytes(str); MemoryStream stream = new MemoryStream(array0); RijndaelManaged rijndaelManaged = new RijndaelManaged(); byte[] key = new byte[32] { 5, 1, 3, 28, 27, 3, 2, 16, 12, 19, 39, 200, 10, 18, 181, 79, 103, 61, 145, 215, 125, 212, 131, 241, 229, 254, 250, 205, 11, 29, 83, 125 }; byte[] vi = new byte[16] { 204, 19, 18, 10, 147, 108, 20, 177, 26, 171, 19, 143, 38, 112, 19, 12 }; ICryptoTransform transform = rijndaelManaged.CreateEncryptor(key, vi); CryptoStream cryptoStream = new CryptoStream(stream, transform, CryptoStreamMode.Write); result = cryptoStream.ToString(); cryptoStream.FlushFinalBlock(); return result; } catch { return null; } } public string Decode(string str) { string result = null; if (str == null) { return result; } try { byte[] array0 = Encoding.ASCII.GetBytes(str); MemoryStream stream = new MemoryStream(array0); RijndaelManaged rijndaelManaged = new RijndaelManaged(); byte[] key = new byte[32] { 5, 1, 3, 28, 27, 3, 2, 16, 12, 19, 39, 200, 10, 18, 181, 79, 103, 61, 145, 215, 125, 212, 131, 241, 229, 254, 250, 205, 11, 29, 83, 125 }; byte[] vi = new byte[16] { 204, 19, 18, 10, 147, 108, 20, 177, 26, 171, 19, 143, 38, 112, 19, 12 }; ICryptoTransform transform = rijndaelManaged.CreateEncryptor(key, vi); CryptoStream inStream = new CryptoStream(stream, transform, CryptoStreamMode.Read); return inStream.ToString(); } catch { return null; } }
1.代码中key和vi分别对应加密器对象Key和初始化向量 (IV)
2.Key和VI只有完全匹配得上加密数据才可以被解密