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asp.net security : Export / Import key problem


Diane Droubay
8/16/2007 6:04:31 PM
I have encrypted the identity section of my web.config file, using the RSA
provider. The built-in encrypt/decrypt works just fine. The problem is, when
I move the app to another machine.

My web.config provider entry looks like this.

<configProtectedData>
<providers>
<add name="MyProvider"
type="System.Configuration.RsaProtectedConfigurationProvider,
System.Configuration, Version=2.0.0.0, Culture=neutral,
PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=MSIL"
keyContainerName="MyKey" useMachineContainer="false"/>
</providers>
</configProtectedData>

I moved the app, exported the key using the Certificate snap-in in mmc, then
imported it into the other machine and used aspnet_regiis to grant
permissions to the ASPNET user. When I try to run my app on this box, I get
the following error:

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: Failed to decrypt using provider
'RsaProtectedConfigurationProvider'. Error message from the provider: The RSA
key container could not be opened.

Source Error:


Line 68: <authentication mode="Windows"/>
Line 69: <identity
configProtectionProvider="RsaProtectedConfigurationProvider">
Line 70: <EncryptedData Type="http://www.w3.org/2001/04/xmlenc#Element"
Line 71: xmlns="http://www.w3.org/2001/04/xmlenc#">
Line 72: <EncryptionMethod
Algorithm="http://www.w3.org/2001/04/xmlenc#tripledes-cbc" />


If I delete the encrypted section in the web.config file on the new box,
then re-encrypt from there, it works fine again, but is not portable to my
other machine. This makes me think that the export/import is not working
correctly.

Any ideas?

Thanks.


Dominick Baier
8/26/2007 10:30:01 AM
use aspnet_regiis for the im/export...


-----
Dominick Baier (http://www.leastprivilege.com)

Developing More Secure Microsoft ASP.NET 2.0 Applications (http://www.microsoft.com/mspress/books/9989.asp)

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Diane Droubay
8/27/2007 3:36:02 PM
Thanks. I'll give that a try.

Diane

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