同理使用前8位补全后8位
public static string DesEncrypt(string input, string key) { byte[] inputArray = Encoding.UTF8.GetBytes(input); var tripleDES = TripleDES.Create(); var byteKey = Encoding.UTF8.GetBytes(key); //复制前8位补全后8位 byte[] allKey = new byte[24]; Buffer.BlockCopy(byteKey, 0, allKey, 0, 16); Buffer.BlockCopy(byteKey, 0, allKey, 16, 8); tripleDES.Key = allKey; tripleDES.Mode = CipherMode.ECB; tripleDES.Padding = PaddingMode.PKCS7; ICryptoTransform cTransform = tripleDES.CreateEncryptor(); byte[] resultArray = cTransform.TransformFinalBlock(inputArray, 0, inputArray.Length); return Convert.ToBase64String(resultArray, 0, resultArray.Length); } public static string DesDecrypt(string input, string key) { byte[] inputArray = Convert.FromBase64String(input); var tripleDES = TripleDES.Create(); var byteKey = Encoding.UTF8.GetBytes(key); //复制前8位补全后8位 byte[] allKey = new byte[24]; Buffer.BlockCopy(byteKey, 0, allKey, 0, 16); Buffer.BlockCopy(byteKey, 0, allKey, 16, 8); tripleDES.Key = allKey; tripleDES.Mode = CipherMode.ECB; tripleDES.Padding = PaddingMode.PKCS7; ICryptoTransform cTransform = tripleDES.CreateDecryptor(); byte[] resultArray = cTransform.TransformFinalBlock(inputArray, 0, inputArray.Length); return Encoding.UTF8.GetString(resultArray); }至此就可以正常兼容NetFramework的代码了
小结至此写下此文，也算是对3DES有了些许了解吧
需要记住
在.NET Core中利用3DES加密和解密必须要给出3个密钥即24个字节即使密钥3和密钥1相等，它不会像.NET Framework中会重用密钥1中的位数。