private void btnPotpis_Click(object sender, EventArgs e)
{
potpis p = new potpis(new SHA1Managed(), new RSACryptoServiceProvider());
StreamReader sr = new StreamReader(@"..\..\..\Files\privatni_kljuc.txt");
p.rsa.FromXmlString(sr.ReadToEnd());
string data = file.readFile("tekst");
byte[] hash = Encoding.UTF8.GetBytes(data);
byte[] Bhash = p.digitalSignature(p.sha.ComputeHash(hash));
string final = Encoding.UTF8.GetString(Bhash);
MessageBox.Show("Digitalni potpis: " + Convert.ToBase64String(Bhash));
file.writeIntoFile("digitalni_potpis", Bhash);
}
private void btnProvjera_Click(object sender, EventArgs e)
{
potpis p = new potpis(new SHA1Managed(), new RSACryptoServiceProvider());
StreamReader reader = new StreamReader(@"..\..\..\Files\javni_kljuc.txt");
string hash = file.readFile("tekst");
byte[] Bhash = Encoding.UTF8.GetBytes(hash);
byte[] hashing = p.sha.ComputeHash(Bhash);
p.rsa.FromXmlString(reader.ReadToEnd());
if (p.checkSignature(hashing, (file.readFrom("digitalni_potpis"))) == true)
{
MessageBox.Show("Digitalni potpis je ispravan!", "Uspješno!");
}
else
{
MessageBox.Show("Digitalni potpis neispravan!", "POZOR", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
