CryptProtectData failed when calling from ASP.NET

[poifull]

Hi Everyone,

When I call the CryptProtectData function from an ASPX page, I got the
following error:
The system cannot find the file specified

I'm getting the error only when ASP Impersonation is used by setting the
<IDENTITY> tag in web.config. Without impersonation the ASPX page works
fine.
The funny thing is if I use RUNAS to open a CMD window with the account
specified in <IDENTITY>, the ASPX page works!

The library is copied from the article "How to: Create a DPAPI Library"
[url]http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dnnetsec/html/SecNetHT07.asp[/url]

Any help will be appreciated.

[swat]

Hi poifull,

What is the authentication in IIS set to? Anonymous? Windows
Integrated? Both? Other?

[poifull]

Hi swat,

I found out what the problem is from this article:
[url]http://support.microsoft.com/default.aspx?scid=kb;en-us;Q322371[/url]

It clearly states that calling CryptProtectData using user store does not
work with ASP.NET because a profile is required.

Thanks for your response.


"swat" <loka_1999@yahoo.com> wrote in message
news:1114622902.834984.325970@f14g2000cwb.googlegr oups.com...

> Hi poifull,
>
> What is the authentication in IIS set to? Anonymous? Windows
> Integrated? Both? Other?
>