Problems with RSACryptoServiceProvider

I have some problems with RSACryptoServiceProvider on my machine. If a create a new 开发者_如何学Cinstance:

RSACryptoServiceProvider rsa = new RSACryptoServiceProvider();

I already get an exception, under CspKeyContainerInfo property :

• Exportable 'rsa.CspKeyContainerInfo.Exportable' threw an exception of type 'System.Security.Cryptography.CryptographicException' bool {System.Security.Cryptography.CryptographicException}

• base {"Key does not exist.\r\n"} System.SystemException {System.Security.Cryptography.CryptographicException}

If I try the same code on the another PC, everything works fine. Are there some settings on my PC that I can check to see if both of them are configured properly and in what the configuration defers? Any clue on what may be the problem?

Thanks

EDIT: It seem's that it only happens on framework 4.0. Any clue?

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I managed to make it work.

            CspParameters parms = new CspParameters();
            parms.Flags = CspProviderFlags.NoFlags;
            parms.KeyContainerName = Guid.NewGuid().ToString().ToUpperInvariant();
            parms.ProviderType = ((Environment.OSVersion.Version.Major > 5) || ((Environment.OSVersion.Version.Major == 5) && (Environment.OSVersion.Version.Minor >= 1))) ? 0x18 : 1;

            RSACryptoServiceProvider rsa = new RSACryptoServiceProvider(parms);

I do not know why, but it is just like that. If anyone know why of this behavior, and comment is more then welcome.

Thanks

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You can get the provider type in the windows registry: \local_machine\software\Microsoft\Cryptography\Defaults\Provider\

Look for the provider you want and check the Type value...