C # RSA Algorithm Application

// First convert the string to a byte array, which is related to encoding.
String STR = textbox1.text;

Byte [] bytes = encoding. ASCII. getbytes (STR );

// Select the signature method, such as RSA and DSA.

Dsacryptoserviceprovider dsac = new dsacryptoserviceprovider ();
Byte [] Sign = dsac. signdata (bytes );

Asciiencoding encoding = new asciiencoding ();
Textbox2.text = encoding. getstring (bytes );
Asciiencoding encoding2 = new asciiencoding ();
Textbox3.text = encoding. getstring (sign );

// Sign is the signature result.

// Perform authentication
Dsacryptoserviceprovider dsac2 = new dsacryptoserviceprovider ();

Dsac2.fromxmlstring (dsac. toxmlstring (false ));

Bool ver = dsac2.verifydata (bytes, sign );

If (VER)
{

MessageBox. Show ("pass! ");

}