_c# tutorial on the encrypted source code of strings in C #

You can use DSA and RSA, such as:
Using System;
Using System.Text;
Using System.Security.Cryptography;

Class Dsacrypto_signdata {
public static void Main (string[] args) {
The first is to convert the string to a byte array, which is related to encoding.
String str = "This is a test.";
byte[] bytes = Encoding.ASCII.GetBytes (str);
Select a signature method with RSA and DSA
DSACryptoServiceProvider Dsac = new DSACryptoServiceProvider ();
byte[] Sign = Dsac. SignData (bytes);
Sign is the result of the signature.

Here's the certification.
DSACryptoServiceProvider DSAC2 = new DSACryptoServiceProvider ();
Dsac2. Fromxmlstring (Dsac. Toxmlstring (false));
BOOL ver = dsac2. Verifydata (bytes, sign);
if (ver) {
Console.WriteLine ("Through");
} else {
Console.WriteLine ("Cannot pass");
}
}
}

RSA is similar, but RSA is much slower than DSA, but more secure than DSA. RSA can choose the size of the keyword, the greater the more secure