安全电子邮件，不提示输入密码

Question

我目前正在使用备份管理器在处理完所有任务后发送电子邮件给我。这封电子邮件应包含已完成的日志。

问题是，我的电子邮件SMTP服务器（gmail）只允许使用SSL进行加密连接。我知道如何建立这样的连接，但由于程序运行时间从上午2点到上午8点，或者在相似的时间，我不想每次都输入密码。但是，我也不想将密码保存为硬盘上的纯文本。所以我正在寻找一种方法来保存加密的密码，并稍后解密它，而不用提示或类似的东西。

感谢您的帮助，

Turakar

Answer 1

我用用ProtectedData由托默克莱恩suggsted答案。只需使用ProtectedData.Protect(data, salt, scope)来保护您的密码以字节为单位，ProtectedData.Unprotect(data, salt, scope)即可解除保护。一旦完成，请记得从内存中删除您的密码，否则攻击者可以从那里取回密码。

Answer 2

private string Encrypt(string clearText) 
 
{ 
 
    string EncryptionKey = "MAKV2SPBNI99212"; 
 
    byte[] clearBytes = Encoding.Unicode.GetBytes(clearText); 
 
    using (Aes encryptor = Aes.Create()) 
 
    { 
 
     Rfc2898DeriveBytes pdb = new Rfc2898DeriveBytes(EncryptionKey, new byte[] { 0x49, 0x76, 0x61, 0x6e, 0x20, 0x4d, 0x65, 0x64, 0x76, 0x65, 0x64, 0x65, 0x76 }); 
 
     encryptor.Key = pdb.GetBytes(32); 
 
     encryptor.IV = pdb.GetBytes(16); 
 
     using (MemoryStream ms = new MemoryStream()) 
 
     { 
 
      using (CryptoStream cs = new CryptoStream(ms, encryptor.CreateEncryptor(), CryptoStreamMode.Write)) 
 
      { 
 
       cs.Write(clearBytes, 0, clearBytes.Length); 
 
       cs.Close(); 
 
      } 
 
      clearText = Convert.ToBase64String(ms.ToArray()); 
 
     } 
 
    } 
 
    return clearText; 
 
} 
 
    
 
private string Decrypt(string cipherText) 
 
{ 
 
    string EncryptionKey = "MAKV2SPBNI99212"; 
 
    byte[] cipherBytes = Convert.FromBase64String(cipherText); 
 
    using (Aes encryptor = Aes.Create()) 
 
    { 
 
     Rfc2898DeriveBytes pdb = new Rfc2898DeriveBytes(EncryptionKey, new byte[] { 0x49, 0x76, 0x61, 0x6e, 0x20, 0x4d, 0x65, 0x64, 0x76, 0x65, 0x64, 0x65, 0x76 }); 
 
     encryptor.Key = pdb.GetBytes(32); 
 
     encryptor.IV = pdb.GetBytes(16); 
 
     using (MemoryStream ms = new MemoryStream()) 
 
     { 
 
      using (CryptoStream cs = new CryptoStream(ms, encryptor.CreateDecryptor(), CryptoStreamMode.Write)) 
 
      { 
 
       cs.Write(cipherBytes, 0, cipherBytes.Length); 
 
       cs.Close(); 
 
      } 
 
      cipherText = Encoding.Unicode.GetString(ms.ToArray()); 
 
     } 
 
    } 
 
    return cipherText; 
 
}