Hi guys,
 I am writing a simple client-server app and the client sends requests to
the server. The client and server communicate using sockets.

 I want to encrypt the client request using servers public key. This is
what I am currently doing...In the setup program, I created an object of
RSACryptoServiceProvider...That essentially creates a new public/private key
pair, right? So, I exported both the keys in xml and stored it on the local
filesystem. So, now the client has access to the servers public key xml file.

 Now, when the client wants to send the request this is what I am doing...

RSACryptoServiceProvider * pobjRSACrypto = new RSACryptoServiceProvider();
pobjRSACrypto->FromXmlString (strServerPublicKey);
//strServerPublicKey is the contents of the ServerPublicKey.xml
Byte byteEncrypted[] = pobjRSACrypto->Encrypt(byteData, false);   

 Now the server does the following

RSACryptoServiceProvider * pobjRSACrypto1 = new RSACryptoServiceProvider();
pobjRSACrypto1->FromXmlString(strServerKeyPair);
//strServerKeyPair has the contents of the ServerKeyPair.xml
Byte byteDecryptedText [] = pobjRSACrypto1->Decrypt(byteEncrypted, false);
String * strDecryptedText = pAscii->GetString(byteDecryptedText);

But, this is what i have observed: Even though I am encrypting the same
plain text, the resulting encrypted text is different every time....Is that
right? Also, the decryption using the private key works...I am just wondering
if I am using the APIs correctly....I mean I am not using a new key pair
every time, right?

Also, is FromXml() should acheive the same as ImportParameters() right?

In short my idea is, generate the key pair once, have it on the local
filesystem and then at run time use that to encrypt and decrypt...

Please let me know if I am doing somethin wrong OR if my understanding is
wrong somewhere?

Thanks,
 Neelay