Crypto Library Problems in .NetCF 2.0


L

lslarry86

Hi, I am trying to port an existing PC application to a particular
handheld device that runs WinCE 5.0 and .NetCF 2.0 SP1. The
application uses DSA signatures to interface with an existing body of
applications.

The following code lines that work fine on WinXP:
DSACryptoServiceProvider DSA = new
DSACryptoServiceProvider();
DSA.ImportParameters(DSAp);

blow up on the handheld:

System.Security.Cryptography.CryptographicException was unhandled
Message="CryptoAPI cryptographic service provider (CSP) for this
implementation could not be acquired."
StackTrace:
at System.Security.Cryptography.Utils._AcquireCSP()
at System.Security.Cryptography.Utils.AcquireProvHandle()
at System.Security.Cryptography.Utils.get_StaticDssProvHandle()
at
System.Security.Cryptography.DSACryptoServiceProvider.ImportParameters
()
at xxxx.Form1.bVerify_Click()

Google research shows that this commonly occurs on ASP and other web
services where the web applications does not have proper access to the
key store (a file under Documents and Settings...). Following these
posts, I have tried setting UseMachineKeyStore, and even creating the
"Documents and Settings" tree on the handheld, with no success. I
have not found any mention of this bug in connection with Windows CE,
Pocket PC or .NetCF. And there does not seem to be anything like
FileMon or RegMon for the handheld.

Can anyone explain what WinCE is looking for when it tries to
"acquire" a CSP, or how I can work around this exception?

Thanks,
Larry

P.S. My first thread on this subject was in an encryption group
("Please help: DSAParameters in Security",
microsoft.public.platformsdk.security). It now looks like a CE
platform problem, since I have the same problem on my IPAQ (Pocket PC
2003).
 
Ad

Advertisements

K

Keven

I'm getting the same problem, any explanation?

Hi, Larry, if any solution, please let the group know.

Thanks all
 
K

Keven

I'm getting the same problem, any explanation?

Hi, Larry, if any solution, please let the group know.

Thanks all
 
B

bem

Have the same problem...any idea?

Keven said:
I'm getting the same problem, any explanation?

Hi, Larry, if any solution, please let the group know.

Thanks all
 
Ad

Advertisements


Ask a Question

Want to reply to this thread or ask your own question?

You'll need to choose a username for the site, which only take a couple of moments. After that, you can post your question and our members will help you out.

Ask a Question

Top