DES加密/解密
1 /// <summary>
2 /// DES加密(數據加密標準，速度較快，適用于加密大量數據的場合)
3 /// </summary>
4 /// <param name="EncryptString">待加密的密文</param>
5 /// <param name="EncryptKey">加密的密鑰</param>
6 /// <returns>returns</returns>
7 public static string DESEncrypt(string EncryptString, string EncryptKey)
8 {
9 if (string.IsNullOrEmpty(EncryptString))
10 {
11 EncryptString = ConfigurationHelper.GetArasDatabaseName();
12 }
13
14 if (string.IsNullOrEmpty(EncryptKey) || EncryptKey.Length != 8)
15 {
16 EncryptKey = "ArasInnovator";
17 }
18 byte[] m_btIV = { 0x12, 0x34, 0x56, 0x78, 0x90, 0xAB, 0xCD, 0xEF };
19 string m_strEncrypt = "";
20 DESCryptoServiceProvider m_DESProvider = new DESCryptoServiceProvider();
21
22 try
23 {
24 byte[] m_btEncryptString = Encoding.Default.GetBytes(EncryptString);
25 MemoryStream m_stream = new MemoryStream();
26 CryptoStream m_cstream = new CryptoStream(m_stream, m_DESProvider.CreateEncryptor(Encoding.Default.GetBytes(EncryptKey), m_btIV), CryptoStreamMode.Write);
27 m_cstream.Write(m_btEncryptString, 0, m_btEncryptString.Length);
28 m_cstream.FlushFinalBlock();
29 m_strEncrypt = Convert.ToBase64String(m_stream.ToArray());
30 m_stream.Close(); m_stream.Dispose();
31 m_cstream.Close(); m_cstream.Dispose();
32 }
33 catch (IOException ex) { throw ex; }
34 catch (CryptographicException ex) { throw ex; }
35 catch (ArgumentException ex) { throw ex; }
36 catch (Exception ex) { throw ex; }
37 finally { m_DESProvider.Clear(); }
38
39 return m_strEncrypt;
40 }
?
1 /// <summary> 2 /// DES 解密(數據加密標準，速度較快，適用于加密大量數據的場合) 3 /// </summary> 4 /// <param name="DecryptString">待解密的密文</param> 5 /// <param name="DecryptKey">解密的密鑰</param> 6 /// <returns>returns</returns> 7 public static string DESDecrypt(string DecryptString, string DecryptKey) 8 { 9 if (string.IsNullOrEmpty(DecryptString)) 10 { 11 DecryptString = ConfigurationHelper.GetArasDatabaseName(); 12 } 13 14 if (string.IsNullOrEmpty(DecryptKey) || DecryptKey.Length != 8) 15 { 16 DecryptKey = "ArasInnovator"; 17 } 18 19 byte[] m_btIV = { 0x12, 0x34, 0x56, 0x78, 0x90, 0xAB, 0xCD, 0xEF }; 20 string m_strDecrypt = ""; 21 DESCryptoServiceProvider m_DESProvider = new DESCryptoServiceProvider(); 22 23 try 24 { 25 byte[] m_btDecryptString = Convert.FromBase64String(DecryptString); 26 MemoryStream m_stream = new MemoryStream(); 27 CryptoStream m_cstream = new CryptoStream(m_stream, m_DESProvider.CreateDecryptor(Encoding.Default.GetBytes(DecryptKey), m_btIV), CryptoStreamMode.Write); 28 m_cstream.Write(m_btDecryptString, 0, m_btDecryptString.Length); 29 m_cstream.FlushFinalBlock(); 30 m_strDecrypt = Encoding.Default.GetString(m_stream.ToArray()); 31 m_stream.Close(); m_stream.Dispose(); 32 m_cstream.Close(); m_cstream.Dispose(); 33 } 34 35 catch (IOException ex) { } 36 catch (CryptographicException ex) { } 37 catch (ArgumentException ex) { } 38 catch (Exception ex) { } 39 finally { m_DESProvider.Clear(); } 40 41 return m_strDecrypt; 42 }?
【原文出處】http://www.51aras.com/?id=8
?????
轉載于:https://www.cnblogs.com/61007257Steven/p/10953410.html
創作挑戰賽新人創作獎勵來咯，堅持創作打卡瓜分現金大獎總結
