private void btnRandKey_Click(object sender, EventArgs e)
{
RSAAlgorithm r = new RSAAlgorithm();
byte[] rand = r.GenerateRandomKey();
UInt32 key = BitConverter.ToUInt32(rand, 0);
txtE.Text = key.ToString();
}
public void SignVerifyRSA(RSAAlgorithm algorithm)
{
HashAlgorithmName hashAlgorithm = GetHashAlgorithmNameFromCoseAlgorithm((int)algorithm);
byte[] coseMessageBytes = CoseSign1Message.Sign(s_sampleContent, RSAKey, hashAlgorithm);
CoseSign1Message msg = CoseMessage.DecodeSign1(coseMessageBytes);
Assert.True(msg.Verify(RSAKey));
}
private void btnDekript_Click(object sender, EventArgs e)
{
RSAAlgorithm r = new RSAAlgorithm(UInt32.Parse(txtP.Text), UInt32.Parse(txtQ.Text), UInt32.Parse(txtE.Text));
int ulaz = int.Parse(txtUlaz.Text);
byte[] izlaz = r.Decrypt(BitConverter.GetBytes(ulaz));
uint cr = BitConverter.ToUInt32(izlaz, 0);
txtKript.Text = cr.ToString();
}
public void RSAGenerateTest()
{
RSAAlgorithm instance = Factory.Create <RSAAlgorithm>(KeyAlgorithm.RSA, KeyOperation.Generate);
const short KEY_LENGTH = 2048;
Key privateKey = instance.generateKey(KEY_LENGTH);
Assert.IsInstanceOfType(privateKey, typeof(RSAPrivateKey));
Assert.AreEqual(privateKey.Length, KEY_LENGTH);
Assert.IsInstanceOfType((privateKey as RSAPrivateKey).PublicKey, typeof(RSAPublicKey));
Assert.AreEqual((privateKey as RSAPrivateKey).PublicKey.Length, KEY_LENGTH);
}
public static byte[] AsymmetricEncrypt([NotNull] X509Certificate2 certificate, [NotNull] byte[] data, RSASettings settings = null)
{
if (data.Length == 0)
{
return(null);
}
IAsymmetricAlgorithm asymmetric = null;
try
{
System.Security.Cryptography.RSA algorithm = certificate.GetPublicEncryptor <System.Security.Cryptography.RSA>();
asymmetric = new RSAAlgorithm <System.Security.Cryptography.RSA>(algorithm);
return(AsymmetricEncrypt(asymmetric, data, settings));
}
finally
{
ObjectHelper.Dispose(ref asymmetric);
}
}
public FormRSA()
{
InitializeComponent();
algorithm = new RSAAlgorithm();
}
