RE: Problem with RSA encryption on w2k

From: Patrick C. Cole (patcole@online.microsoft.com)
Date: 10/04/02 

From: patcole@online.microsoft.com (Patrick C. Cole (MS))
Date: Fri, 04 Oct 2002 19:24:02 GMT

Joseph,

I apologize for the delay, but I am still working on this issue. The code
is fine and it appears that this should be working.

I will post more information as soon as I have it.

Patrick Cole
Microsoft Developer Support

This posting is provided "AS IS" with no warranties, and confers no rights.
You assume all risk for your use. © 2002 Microsoft Corporation. All rights
reserved.
--------------------
| From: "Joseph" <joseph@bluefield.com.hk>
| Subject: Problem with RSA encryption on w2k
| Date: Wed, 2 Oct 2002 13:33:51 +0800
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|
| Hi,
|
| I tried to perform a direct RSA encryption using OAEP padding as follows:
|
| CspParameters param = new CspParameters();
|
| param.Flags = CspProviderFlags.UseMachineKeyStore;
|
| RSACryptoServiceProvider rsaEncrypt = new RSACryptoServiceProvider(param);
|
| rsaEncrypt.FromXmlString(publicKey);
|
| int dataSize = 0;
|
| bool fOAEP = true;
|
| if (fOAEP)
|
| dataSize = (rsaEncrypt.KeySize / 8) - 41;
|
| else
|
| dataSize = (rsaEncrypt.KeySize / 8) - 11;
|
| byte[] toEncrypt = new byte[dataSize];
|
| toEncrypt = System.Text.Encoding.UTF8.GetBytes("My String comes here");
|
| Byte[] encrypted = rsaEncrypt.Encrypt(toEncrypt, fOAEP);
|
|
| }
|
|
| I got the following error when calling Encrypt():
|
| Direct Encryption and decryption using RSA OAEP padding are not available
on
| this platform. SOURCE: mscorlib STACK TRACE: at
|
System.Security.Cryptography.RSACryptoServiceProvider._EncryptPKWin2KEnh(Int
| Ptr hPubKey, Byte[] rgbKey, Boolean fOAEP) at
| System.Security.Cryptography.RSACryptoServiceProvider.Encrypt(Byte[] rgb,
| Boolean fOAEP)
|
|
| High Encryption Pack is already installed on my W2K server. My machine is
| running W2K Server 5.00.2195 SP2. What else is causing this problem?
| Thanks.
|
| Joseph
|
|
|
|

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