加密和解密（1）:常用数据加密和解密方法汇总(5)

日期：2021-01-23 栏目：破解天下浏览：次

/// <summary> /// MD5 加密静态方法 /// </summary> /// <param>待加密的密文</param> /// <returns>returns</returns> public static string MD5Encrypt(string EncryptString) { if (string.IsNullOrEmpty(EncryptString)) { throw (new Exception("密文不得为空")); } MD5 m_ClassMD5 = new MD5CryptoServiceProvider(); string m_strEncrypt = ""; try { m_strEncrypt = BitConverter.ToString(m_ClassMD5.ComputeHash(Encoding.Default.GetBytes(EncryptString))).Replace("-", ""); } catch (ArgumentException ex) { throw ex; } catch (CryptographicException ex) { throw ex; } catch (Exception ex) { throw ex; } finally { m_ClassMD5.Clear(); } return m_strEncrypt; } /// <summary> /// DES 加密(数据加密标准，速度较快，适用于加密大量数据的场合) /// </summary> /// <param name="EncryptString">待加密的密文</param> /// <param name="EncryptKey">加密的密钥</param> /// <returns>returns</returns> public static string DESEncrypt(string EncryptString, string EncryptKey) { if (string.IsNullOrEmpty(EncryptString)) { throw (new Exception("密文不得为空")); } if (string.IsNullOrEmpty(EncryptKey)) { throw (new Exception("密钥不得为空")); } if (EncryptKey.Length != 8) { throw (new Exception("密钥必须为8位")); } byte[] m_btIV = { 0x12, 0x34, 0x56, 0x78, 0x90, 0xAB, 0xCD, 0xEF }; string m_strEncrypt = ""; DESCryptoServiceProvider m_DESProvider = new DESCryptoServiceProvider(); try { byte[] m_btEncryptString = Encoding.Default.GetBytes(EncryptString); MemoryStream m_stream = new MemoryStream(); CryptoStream m_cstream = new CryptoStream(m_stream, m_DESProvider.CreateEncryptor(Encoding.Default.GetBytes(EncryptKey), m_btIV), CryptoStreamMode.Write); m_cstream.Write(m_btEncryptString, 0, m_btEncryptString.Length); m_cstream.FlushFinalBlock(); m_strEncrypt = Convert.ToBase64String(m_stream.ToArray()); m_stream.Close(); m_stream.Dispose(); m_cstream.Close(); m_cstream.Dispose(); } catch (IOException ex) { throw ex; } catch (CryptographicException ex) { throw ex; } catch (ArgumentException ex) { throw ex; } catch (Exception ex) { throw ex; } finally { m_DESProvider.Clear(); } return m_strEncrypt; } /// <summary> /// DES 解密(数据加密标准，速度较快，适用于加密大量数据的场合) /// </summary> /// <param name="DecryptString">待解密的密文</param> /// <param name="DecryptKey">解密的密钥</param> /// <returns>returns</returns> public static string DESDecrypt(string DecryptString, string DecryptKey) { if (string.IsNullOrEmpty(DecryptString)) { throw (new Exception("密文不得为空")); } if (string.IsNullOrEmpty(DecryptKey)) { throw (new Exception("密钥不得为空")); } if (DecryptKey.Length != 8) { throw (new Exception("密钥必须为8位")); } byte[] m_btIV = { 0x12, 0x34, 0x56, 0x78, 0x90, 0xAB, 0xCD, 0xEF }; string m_strDecrypt = ""; DESCryptoServiceProvider m_DESProvider = new DESCryptoServiceProvider(); try { byte[] m_btDecryptString = Convert.FromBase64String(DecryptString); MemoryStream m_stream = new MemoryStream(); CryptoStream m_cstream = new CryptoStream(m_stream, m_DESProvider.CreateDecryptor(Encoding.Default.GetBytes(DecryptKey), m_btIV), CryptoStreamMode.Write); m_cstream.Write(m_btDecryptString, 0, m_btDecryptString.Length); m_cstream.FlushFinalBlock(); m_strDecrypt = Encoding.Default.GetString(m_stream.ToArray()); m_stream.Close(); m_stream.Dispose(); m_cstream.Close(); m_cstream.Dispose(); } catch (IOException ex) { throw ex; } catch (CryptographicException ex) { throw ex; } catch (ArgumentException ex) { throw ex; } catch (Exception ex) { throw ex; } finally { m_DESProvider.Clear(); } return m_strDecrypt; } /// <summary> /// RC2 加密(用变长密钥对大量数据进行加密) /// </summary> /// <param name="EncryptString">待加密密文</param> /// <param name="EncryptKey">加密密钥</param> /// <returns>returns</returns> public static string RC2Encrypt(string EncryptString, string EncryptKey) { if (string.IsNullOrEmpty(EncryptString)) { throw (new Exception("密文不得为空")); } if (string.IsNullOrEmpty(EncryptKey)) { throw (new Exception("密钥不得为空")); } if (EncryptKey.Length < 5 || EncryptKey.Length > 16) { throw (new Exception("密钥必须为5-16位")); } string m_strEncrypt = ""; byte[] m_btIV = { 0x12, 0x34, 0x56, 0x78, 0x90, 0xAB, 0xCD, 0xEF }; RC2CryptoServiceProvider m_RC2Provider = new RC2CryptoServiceProvider(); try { byte[] m_btEncryptString = Encoding.Default.GetBytes(EncryptString); MemoryStream m_stream = new MemoryStream(); CryptoStream m_cstream = new CryptoStream(m_stream, m_RC2Provider.CreateEncryptor(Encoding.Default.GetBytes(EncryptKey), m_btIV), CryptoStreamMode.Write); m_cstream.Write(m_btEncryptString, 0, m_btEncryptString.Length); m_cstream.FlushFinalBlock(); m_strEncrypt = Convert.ToBase64String(m_stream.ToArray()); m_stream.Close(); m_stream.Dispose(); m_cstream.Close(); m_cstream.Dispose(); } catch (IOException ex) { throw ex; } catch (CryptographicException ex) { throw ex; } catch (ArgumentException ex) { throw ex; } catch (Exception ex) { throw ex; } finally { m_RC2Provider.Clear(); } return m_strEncrypt; } /// <summary> /// RC2 解密(用变长密钥对大量数据进行加密) /// </summary> /// <param name="DecryptString">待解密密文</param> /// <param name="DecryptKey">解密密钥</param> /// <returns>returns</returns> public static string RC2Decrypt(string DecryptString, string DecryptKey) { if (string.IsNullOrEmpty(DecryptString)) { throw (new Exception("密文不得为空")); } if (string.IsNullOrEmpty(DecryptKey)) { throw (new Exception("密钥不得为空")); } if (DecryptKey.Length < 5 || DecryptKey.Length > 16) { throw (new Exception("密钥必须为5-16位")); } byte[] m_btIV = { 0x12, 0x34, 0x56, 0x78, 0x90, 0xAB, 0xCD, 0xEF }; string m_strDecrypt = ""; RC2CryptoServiceProvider m_RC2Provider = new RC2CryptoServiceProvider(); try { byte[] m_btDecryptString = Convert.FromBase64String(DecryptString); MemoryStream m_stream = new MemoryStream(); CryptoStream m_cstream = new CryptoStream(m_stream, m_RC2Provider.CreateDecryptor(Encoding.Default.GetBytes(DecryptKey), m_btIV), CryptoStreamMode.Write); m_cstream.Write(m_btDecryptString, 0, m_btDecryptString.Length); m_cstream.FlushFinalBlock(); m_strDecrypt = Encoding.Default.GetString(m_stream.ToArray()); m_stream.Close(); m_stream.Dispose(); m_cstream.Close(); m_cstream.Dispose(); } catch (IOException ex) { throw ex; } catch (CryptographicException ex) { throw ex; } catch (ArgumentException ex) { throw ex; } catch (Exception ex) { throw ex; } finally { m_RC2Provider.Clear(); } return m_strDecrypt; } /// <summary> /// 3DES 加密(基于DES，对一块数据用三个不同的密钥进行三次加密，强度更高) /// </summary> /// <param name="EncryptString">待加密密文</param> /// <param name="EncryptKey1">密钥一</param> /// <param name="EncryptKey2">密钥二</param> /// <param name="EncryptKey3">密钥三</param> /// <returns>returns</returns> public static string DES3Encrypt(string EncryptString, string EncryptKey1, string EncryptKey2, string EncryptKey3) { string m_strEncrypt = ""; try { m_strEncrypt = DESEncrypt(EncryptString, EncryptKey3); m_strEncrypt = DESEncrypt(m_strEncrypt, EncryptKey2); m_strEncrypt = DESEncrypt(m_strEncrypt, EncryptKey1); } catch (Exception ex) { throw ex; } return m_strEncrypt; } /// <summary> /// 3DES 解密(基于DES，对一块数据用三个不同的密钥进行三次加密，强度更高) /// </summary> /// <param name="DecryptString">待解密密文</param> /// <param name="DecryptKey1">密钥一</param> /// <param name="DecryptKey2">密钥二</param> /// <param name="DecryptKey3">密钥三</param> /// <returns>returns</returns> public static string DES3Decrypt(string DecryptString, string DecryptKey1, string DecryptKey2, string DecryptKey3) { string m_strDecrypt = ""; try { m_strDecrypt = DESDecrypt(DecryptString, DecryptKey1); m_strDecrypt = DESDecrypt(m_strDecrypt, DecryptKey2); m_strDecrypt = DESDecrypt(m_strDecrypt, DecryptKey3); } catch (Exception ex) { throw ex; } return m_strDecrypt; } /// <summary> /// AES 加密(高级加密标准，是下一代的加密算法标准，速度快，安全级别高，目前 AES 标准的一个实现是 Rijndael 算法) /// </summary> /// <param name="EncryptString">待加密密文</param> /// <param name="EncryptKey">加密密钥</param> /// <returns></returns> public static string AESEncrypt(string EncryptString, string EncryptKey) { if (string.IsNullOrEmpty(EncryptString)) { throw (new Exception("密文不得为空")); } if (string.IsNullOrEmpty(EncryptKey)) { throw (new Exception("密钥不得为空")); } string m_strEncrypt = ""; byte[] m_btIV = Convert.FromBase64String("Rkb4jvUy/ye7Cd7k89QQgQ=="); Rijndael m_AESProvider = Rijndael.Create(); try { byte[] m_btEncryptString = Encoding.Default.GetBytes(EncryptString); MemoryStream m_stream = new MemoryStream(); CryptoStream m_csstream = new CryptoStream(m_stream, m_AESProvider.CreateEncryptor(Encoding.Default.GetBytes(EncryptKey), m_btIV), CryptoStreamMode.Write); m_csstream.Write(m_btEncryptString, 0, m_btEncryptString.Length); m_csstream.FlushFinalBlock(); m_strEncrypt = Convert.ToBase64String(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; } /// <summary> /// AES 解密(高级加密标准，是下一代的加密算法标准，速度快，安全级别高，目前 AES 标准的一个实现是 Rijndael 算法) /// </summary> /// <param name="DecryptString">待解密密文</param> /// <param name="DecryptKey">解密密钥</param> /// <returns></returns> public static string AESDecrypt(string DecryptString, string DecryptKey) { if (string.IsNullOrEmpty(DecryptString)) { throw (new Exception("密文不得为空")); } if (string.IsNullOrEmpty(DecryptKey)) { throw (new Exception("密钥不得为空")); } string m_strDecrypt = ""; byte[] m_btIV = Convert.FromBase64String("Rkb4jvUy/ye7Cd7k89QQgQ=="); Rijndael m_AESProvider = Rijndael.Create(); try { byte[] m_btDecryptString = Convert.FromBase64String(DecryptString); MemoryStream m_stream = new MemoryStream(); CryptoStream m_csstream = new CryptoStream(m_stream, m_AESProvider.CreateDecryptor(Encoding.Default.GetBytes(DecryptKey), m_btIV), CryptoStreamMode.Write); m_csstream.Write(m_btDecryptString, 0, m_btDecryptString.Length); m_csstream.FlushFinalBlock(); m_strDecrypt = Encoding.Default.GetString(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; }</pre>

2、数据加密和解密简单代码调用如下：

Response.Write(" -----------MD5加密--------------- ");

Response.Write(SDKSecurity.MD5Encrypt("仰天一笑"));
Response.Write(" -----------DES加密--------------- ");

Response.Write(SDKSecurity.DESEncrypt("仰天一笑", "anson-xu"));

Response.Write(" -----------DES解密--------------- ");

Response.Write(SDKSecurity.DESDecrypt("l06JvJ45r/lb9iKzSXl47Q==", "anson-xu"));
Response.Write(" -----------AES加密--------------- ");

Response.Write(SDKSecurity.AESEncrypt("仰天一笑", "ansonxuyu"));

Response.Write(" -----------AES解密--------------- ");

Response.Write(SDKSecurity.AESDecrypt("avwKL+MO8+zoLHvzk0+TBA==", "ansonxuyu"));

3、数据加密和解密调用后运行效果图如下：

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加密和解密（1）:常用数据加密和解密方法汇总(5)

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