public virtual void DoTest2()
{
RsaKeyParameters pubParameters = new RsaKeyParameters(false, mod1, pub1);
RsaKeyParameters privParameters = new RsaKeyParameters(true, mod1, pri1);
RsaEngine rsa = new RsaEngine();
byte[] data;
//
// ISO 9796-1 - public encrypt, private decrypt
//
ISO9796d1Encoding eng = new ISO9796d1Encoding(rsa);
eng.Init(true, privParameters);
data = eng.ProcessBlock(msg2, 0, msg2.Length);
eng.Init(false, pubParameters);
if (!IsSameAs(data, 1, sig2))
{
Fail("failed ISO9796-1 generation Test 2");
}
data = eng.ProcessBlock(data, 0, data.Length);
if (!AreEqual(msg2, data))
{
Fail("failed ISO9796-1 retrieve Test 2");
}
}
public virtual void DoTest3()
{
RsaKeyParameters pubParameters = new RsaKeyParameters(false, mod2, pub2);
RsaKeyParameters privParameters = new RsaKeyParameters(true, mod2, pri2);
RsaEngine rsa = new RsaEngine();
byte[] data;
//
// ISO 9796-1 - public encrypt, private decrypt
//
ISO9796d1Encoding eng = new ISO9796d1Encoding(rsa);
eng.Init(true, privParameters);
eng.SetPadBits(4);
data = eng.ProcessBlock(msg3, 0, msg3.Length);
eng.Init(false, pubParameters);
if (!IsSameAs(sig3, 1, data))
{
Fail("failed ISO9796-1 generation Test 3");
}
data = eng.ProcessBlock(data, 0, data.Length);
if (!IsSameAs(msg3, 0, data))
{
Fail("failed ISO9796-1 retrieve Test 3");
}
}
/// <summary>
/// Generate cipher. The cipher can be reused.
/// </summary>
/// <param name="padding">Asymmetric algorithm padding mode.</param>
/// <param name="asymmetricKey">Asymmetric public key or private key.</param>
/// <returns></returns>
/// <exception cref="Exception"/>
public IAsymmetricBlockCipher GenerateCipher(AsymmetricPaddingMode padding, AsymmetricKeyParameter asymmetricKey)
{
IAsymmetricBlockCipher cipher = new RsaBlindedEngine();
switch (padding)
{
case AsymmetricPaddingMode.NoPadding: break;
case AsymmetricPaddingMode.PKCS1: cipher = new Pkcs1Encoding(cipher); break;
case AsymmetricPaddingMode.OAEP: cipher = new OaepEncoding(cipher); break;
case AsymmetricPaddingMode.ISO9796_1: cipher = new ISO9796d1Encoding(cipher); break;
default: throw new System.Security.Cryptography.CryptographicException("Unsupported padding mode.");
}
cipher.Init(!asymmetricKey.IsPrivate, asymmetricKey);
return(cipher);
}