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using System; using System.IO; using System.Security.Cryptography; using System.Text; namespace Utils { /// <summary> /// CommonTools加密解密 /// </summary> public class CommonTools { #region 加密 static byte[] m_btIV = Convert.FromBase64String("T1hYc1BlM2hmaTVocVJLV3JOMlRrS3A4CiA="); static byte[] m_salt = Convert.FromBase64String("OWYya1BuMnl2SEhuQmxZUGpJRmJGMmRLOUpKTVZyOU5iR1A1RzdzZTdqWnl4WDJpc09SeFJSdzZCUjM4bHFkUQog"); #region 加密字符串 /// <summary> /// CommonTools 加密 /// </summary> /// <param name="encryptString">待加密密文</param> /// <param name="encryptKey">加密密钥</param> /// <param name="encoding">编码</param> public static string AESEncrypt(string encryptString, string encryptKey, Encoding encoding) { if (encoding is null) { encoding = Encoding.UTF8; } return Convert.ToBase64String(AESEncrypt(encoding.GetBytes(encryptString), encryptKey)); } #endregion #region 加密字节数组 /// <summary> /// CommonTools 加密 /// </summary> /// <param name="EncryptByte">待加密密文</param> /// <param name="encryptKey">加密密钥</param> public static byte[] AESEncrypt(byte[] EncryptByte, string encryptKey) { if (EncryptByte.Length == 0) { throw (new Exception("明文不得为空")); } if (string.IsNullOrEmpty(encryptKey)) { throw (new Exception("密钥不得为空")); } byte[] m_strEncrypt; byte[] iv = new byte[16]; Array.Copy(m_btIV, iv, 16); RijndaelManaged m_AESProvider = new RijndaelManaged { // Key = keyArray, // IV = iv, Mode = CipherMode.CBC, Padding = PaddingMode.PKCS7, BlockSize = 128 }; // Rijndael m_AESProvider = Rijndael.Create(); try { MemoryStream m_stream = new MemoryStream(); PasswordDeriveBytes pdb = new PasswordDeriveBytes(encryptKey, m_salt); ICryptoTransform transform = m_AESProvider.CreateEncryptor(pdb.GetBytes(32), iv); CryptoStream m_csstream = new CryptoStream(m_stream, transform, CryptoStreamMode.Write); m_csstream.Write(EncryptByte, 0, EncryptByte.Length); m_csstream.FlushFinalBlock(); m_strEncrypt = m_stream.ToArray(); m_stream.Close(); m_stream.Dispose(); m_csstream.Close(); m_csstream.Dispose(); } catch (IOException ex) { throw ex; } catch (CryptographicException ex) { throw ex; } catch (ArgumentException ex) { throw ex; } catch (Exception ex) { throw ex; } finally { m_AESProvider.Clear(); } return m_strEncrypt; } #endregion #endregion #region 解密 #region 解密字符串 /// <summary> /// CommonTools 解密 /// </summary> /// <param name="decryptString">待解密密文</param> /// <param name="decryptKey">解密密钥</param> /// <param name="encoding">编码</param> public static string AESDecrypt(string decryptString, string decryptKey, Encoding encoding) { if (encoding is null) { encoding = Encoding.UTF8; } return Convert.ToBase64String(AESDecrypt(encoding.GetBytes(decryptString), decryptKey)); } #endregion #region 解密字节数组 /// <summary> /// CommonTools 解密 /// </summary> /// <param name="decryptString">待解密密文</param> /// <param name="decryptKey">解密密钥</param> public static byte[] AESDecrypt(byte[] DecryptByte, string decryptKey) { if (DecryptByte.Length == 0) { throw (new Exception("密文不得为空")); } if (string.IsNullOrEmpty(decryptKey)) { throw (new Exception("密钥不得为空")); } byte[] m_strDecrypt; byte[] iv = new byte[16]; Array.Copy(m_btIV, iv, 16); // Rijndael m_AESProvider = Rijndael.Create(); RijndaelManaged m_AESProvider = new RijndaelManaged { // Key = keyArray, // IV = iv, Mode = CipherMode.CBC, Padding = PaddingMode.PKCS7, BlockSize = 128 }; try { MemoryStream m_stream = new MemoryStream(); PasswordDeriveBytes pdb = new PasswordDeriveBytes(decryptKey, m_salt); ICryptoTransform transform = m_AESProvider.CreateDecryptor(pdb.GetBytes(32), iv); CryptoStream m_csstream = new CryptoStream(m_stream, transform, CryptoStreamMode.Write); m_csstream.Write(DecryptByte, 0, DecryptByte.Length); m_csstream.FlushFinalBlock(); m_strDecrypt = m_stream.ToArray(); m_stream.Close(); m_stream.Dispose(); m_csstream.Close(); m_csstream.Dispose(); } catch (IOException ex) { throw ex; } catch (CryptographicException ex) { throw ex; } catch (ArgumentException ex) { throw ex; } catch (Exception ex) { throw ex; } finally { m_AESProvider.Clear(); } return m_strDecrypt; } public static byte[] SHA256(string str) { byte[] SHA256Data = Encoding.UTF8.GetBytes(str); SHA256Managed Sha256 = new SHA256Managed(); byte[] by = Sha256.ComputeHash(SHA256Data); return by; } public static string Md5String(string str) { MD5 md5 = MD5.Create(); // 将字符串转换成字节数组 byte[] byteOld = Encoding.UTF8.GetBytes(str); // 调用加密方法 byte[] byteNew = md5.ComputeHash(byteOld); // 将加密结果转换为字符串 StringBuilder sb = new StringBuilder(); foreach (byte b in byteNew) { // 将字节转换成16进制表示的字符串, sb.Append(b.ToString("x2")); } // 返回加密的字符串 return sb.ToString(); } #endregion #endregion } }
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