Geek asks and answers

Why can't I encrypt web.config / appSettings using custom configProtectionProvider on Azure (Windows Server 2012)?

I have an MVC application that is deployed on a hosting service Windows Azure, running on Windows Server 2012. The virtual machine files web.configI have 3 partitions, encrypted by usingPKCS12ProtectedConfigurationProvider : connectionStrings, dataCacheClientsand system.net/mailSettings/smtp. Here's what the relevant sections look like:

<configuration>
  ...
  <configProtectedData>
    <providers>
      <add name="CustomProvider" thumbprint="[this is secret]"
          type="Pkcs12ProtectedConfigurationProvider.Pkcs12ProtectedConfigurationProvider, PKCS12ProtectedConfigurationProvider, Version=1.0.0.0, Culture=neutral, PublicKeyToken=34da007ac91f901d" />
    </providers>
  </configProtectedData>
  ...
  <connectionStrings configProtectionProvider="CustomProvider">
    <EncryptedData ... ommitted for brevity
  </connectionStrings>
  ...
  <system.net>
    <mailSettings>
      <smtp configProtectionProvider="CustomProvider">
        <EncryptedData ommitted for brevity
      </smtp>
    </mailSettings>
  </system.net>
  ...
  <dataCacheClients configProtectionProvider="CustomProvider">
    <EncryptedData ommitted for brevity
  </dataCacheClients>
  ...
</configuration>

All of the above works fine . When deployed to Azure, all connection strings, SMTP mail, and the data cache work. The provider PKCS12ProtectedConfigurationuses my own certificate to decrypt partitions, and all is well.

web.config/appSettings. Azure - :

<configuration>
  ...
  <appSettings configProtectionProvider="CustomProvider">
    <EncryptedData ommitted for brevity
  </appSettings>
  ...
</configuration>

... :

Server Error in '/' Application.

Configuration Error

Description: An error occurred during the processing of a configuration file
required to service this request. Please review the specific error details
below and modify your configuration file appropriately.

Parser Error Message: An error occurred loading a configuration file: Could not
load file or assembly 'PKCS12ProtectedConfigurationProvider, Version=1.0.0.0,
Culture=neutral, PublicKeyToken=34da007ac91f901d' or one of its dependencies.
The system cannot find the file specified.

Source Error: 

Line 41:     </EncryptedData>
Line 42:   </connectionStrings>
Line 43:   <appSettings configProtectionProvider="CustomProvider">
Line 44:     <EncryptedData ...>
Line 45:       <EncryptionMethod .../>

Source File: E:\sitesroot\0\web.config    Line: 43 

Assembly Load Trace: The following information can be helpful to determine why
the assembly 'PKCS12ProtectedConfigurationProvider, Version=1.0.0.0,
Culture=neutral, PublicKeyToken=34da007ac91f901d' could not be loaded.

WRN: Assembly binding logging is turned OFF.
To enable assembly bind failure logging, set the registry value
[HKLM\Software\Microsoft\Fusion!EnableLog] (DWORD) to 1.
Note: There is some performance penalty associated with assembly bind failure
logging.
To turn this feature off, remove the registry value
[HKLM\Software\Microsoft\Fusion!EnableLog].

, PKCS12ProtectedConfigurationProvider.dll /bin, :

  • VM approot/bin, siteroot/bin
  • appSettings , 3 DLL.

, PKCS12ProtectedConfigurationProvider.dll, appSettings. Version, Culture PublicKeyToken , :

Parser Error Message: An error occurred loading a configuration file: Could not 
load file or assembly 'PKCS12ProtectedConfigurationProvider' or one of its 
dependencies. The system cannot find the file specified.

web.config/appSettings configProtectionProvider Windows Azure, Windows Server 2012?. , ?

:

Fusion!EnableLog, :

Assembly Load Trace: The following information can be helpful to determine why
the assembly 'PKCS12ProtectedConfigurationProvider, Version=1.0.0.0, 
Culture=neutral, PublicKeyToken=34da007ac91f901d' could not be loaded.

=== Pre-bind state information ===
LOG: User = NT AUTHORITY\NETWORK SERVICE
LOG: DisplayName = PKCS12ProtectedConfigurationProvider, Version=1.0.0.0, Culture=neutral, PublicKeyToken=34da007ac91f901d
 (Fully-specified)
LOG: Appbase = file:///d:/windows/system32/inetsrv/
LOG: Initial PrivatePath = NULL
Calling assembly : (Unknown).
===
LOG: This bind starts in default load context.
LOG: No application configuration file found.
LOG: Using host configuration file: D:\Windows\Microsoft.NET\Framework64\v4.0.30319\aspnet.config
LOG: Using machine configuration file from D:\Windows\Microsoft.NET\Framework64\v4.0.30319\config\machine.config.
LOG: Post-policy reference: PKCS12ProtectedConfigurationProvider, Version=1.0.0.0, Culture=neutral, PublicKeyToken=34da007ac91f901d
LOG: Attempting download of new URL file:///d:/windows/system32/inetsrv/PKCS12ProtectedConfigurationProvider.DLL.
LOG: Attempting download of new URL file:///d:/windows/system32/inetsrv/PKCS12ProtectedConfigurationProvider/PKCS12ProtectedConfigurationProvider.DLL.
LOG: Attempting download of new URL file:///d:/windows/system32/inetsrv/PKCS12ProtectedConfigurationProvider.EXE.
LOG: Attempting download of new URL file:///d:/windows/system32/inetsrv/PKCS12ProtectedConfigurationProvider/PKCS12ProtectedConfigurationProvider.EXE.

, . IIS inetsrv , /bin? " ". , web.config appSettings ?

+5

More articles:


All Articles