加密: 调用时: Encrypt_DES16(“2AF349243535BCD3”, "1111111111111111");
public static string Encrypt_DES16(string str_in_data, string str_DES_KEY) //数据为十六进制 { try { byte[] shuju = new byte[8]; byte[] keys = new byte[8]; for (int i = 0; i < 8; i++) { shuju[i] = Convert.ToByte(str_in_data.Substring(i * 2, 2), 16); keys[i] = Convert.ToByte(str_DES_KEY.Substring(i * 2, 2), 16); } DES desEncrypt = new DESCryptoServiceProvider(); desEncrypt.Mode = CipherMode.ECB; //desEncrypt.Key = ASCIIEncoding.ASCII.GetBytes(str_DES_KEY); desEncrypt.Key = keys; byte[] Buffer; Buffer = shuju;//ASCIIEncoding.ASCII.GetBytes(str_in_data); ICryptoTransform transForm = desEncrypt.CreateEncryptor(); byte[] R; R = transForm.TransformFinalBlock(Buffer, 0, Buffer.Length); string return_str = ""; foreach (byte b in R) { return_str += b.ToString("X2"); } return_str = return_str.Substring(0, 16); return return_str; } catch (Exception e) { throw e; } }
解密:调用时: Encrypt_DES16(“C47EC89B0A247A47”, "1111111111111111");
//DES解密 public static string Decrypt_DES16(string str_in_data, string str_DES_KEY)//数据和密钥为十六进制 { byte[] shuju = new byte[8]; byte[] keys = new byte[8]; for (int i = 0; i < 8; i++) { shuju[i] = Convert.ToByte(str_in_data.Substring(i * 2, 2), 16); keys[i] = Convert.ToByte(str_DES_KEY.Substring(i * 2, 2), 16); } DES desDecrypt = new DESCryptoServiceProvider(); desDecrypt.Mode = CipherMode.ECB; desDecrypt.Key = keys; desDecrypt.Padding = System.Security.Cryptography.PaddingMode.None; byte[] Buffer = shuju; ICryptoTransform transForm = desDecrypt.CreateDecryptor(); byte[] R; R = transForm.TransformFinalBlock(Buffer, 0, Buffer.Length); string return_str = ""; foreach (byte b in R) { return_str += b.ToString("X2"); } return return_str; }
时间: 2024-10-29 13:13:13