private void TestSign()
{
RLWEParameters mpar = (RLWEParameters)RLWEParamSets.RLWEN512Q12289.DeepCopy();
RLWEKeyGenerator mkgen = new RLWEKeyGenerator(mpar);
IAsymmetricKeyPair akp = mkgen.GenerateKeyPair();
using (RLWESign sgn = new RLWESign(mpar))
{
sgn.Initialize(akp.PublicKey);
int sz = sgn.MaxPlainText;
byte[] data = new byte[200];
new VTDev.Libraries.CEXEngine.Crypto.Prng.CSPRng().GetBytes(data);
byte[] code = sgn.Sign(data, 0, data.Length);
sgn.Initialize(akp.PrivateKey);
if (!sgn.Verify(data, 0, data.Length, code))
throw new Exception("EncryptionKey: private key comparison test failed!");
OnProgress(new TestEventArgs("Passed byte sign and verify"));
sgn.Initialize(akp.PublicKey);
code = sgn.Sign(new MemoryStream(data));
sgn.Initialize(akp.PrivateKey);
if (!sgn.Verify(new MemoryStream(data), code))
throw new Exception("EncryptionKey: private key comparison test failed!");
OnProgress(new TestEventArgs("Passed stream sign and verify"));
}
}
private void TestEncrypt(RLWEParameters Param)
{
RLWEKeyGenerator mkgen = new RLWEKeyGenerator(Param);
IAsymmetricKeyPair akp = mkgen.GenerateKeyPair();
byte[] enc;
using (RLWEEncrypt mpe = new RLWEEncrypt(Param))
{
mpe.Initialize(akp.PublicKey);
int sz = mpe.MaxPlainText;
byte[] data = new byte[sz];
new CSPRng().GetBytes(data);
enc = mpe.Encrypt(data);
mpe.Initialize(akp.PrivateKey);
byte[] dec = mpe.Decrypt(enc);
if (!Compare.AreEqual(dec, data))
throw new Exception("Encryption test: decryption failure!");
OnProgress(new TestEventArgs(string.Format("Passed N:{0} Q:{1} encryption test", Param.N, Param.Q)));
}
}
/// <summary>
/// Get the asymmetric generator instance
/// </summary>
///
/// <param name="Parameters">The cipher parameters</param>
///
/// <returns>The generator instance</returns>
private IAsymmetricGenerator GetAsymmetricGenerator(IAsymmetricParameters Parameters)
{
IAsymmetricGenerator gen = null;
try
{
if (Parameters.GetType().Equals(typeof(NTRUParameters)))
gen = new NTRUKeyGenerator((NTRUParameters)Parameters);
else if (Parameters.GetType().Equals(typeof(MPKCParameters)))
gen = new MPKCKeyGenerator((MPKCParameters)Parameters);
else if (Parameters.GetType().Equals(typeof(RLWEParameters)))
gen = new RLWEKeyGenerator((RLWEParameters)Parameters);
return gen;
}
catch (Exception ex)
{
throw new CryptoProcessingException("DtmKex:GetAsymmetricGenerator", "The generator could not be loaded!", ex);
}
}
private void TestKey()
{
RLWEParameters encParams = (RLWEParameters)RLWEParamSets.RLWEN256Q7681.DeepCopy();
RLWEKeyGenerator keyGen = new RLWEKeyGenerator(encParams);
IAsymmetricKeyPair keyPair = keyGen.GenerateKeyPair();
byte[] enc, dec, data;
// encrypt an array
using (RLWEEncrypt cipher = new RLWEEncrypt(encParams))
{
cipher.Initialize(keyPair.PublicKey);
data = new byte[cipher.MaxPlainText];
new CSPRng().GetBytes(data);
enc = cipher.Encrypt(data);
}
// decrypt the cipher text
using (RLWEEncrypt cipher = new RLWEEncrypt(encParams))
{
cipher.Initialize(keyPair.PrivateKey);
dec = cipher.Decrypt(enc);
}
if (!Compare.AreEqual(dec, data))
throw new Exception("TestKey test: decryption failure!");
OnProgress(new TestEventArgs("Passed sub-key test"));
}
private void TestEncode()
{
RLWEParameters mpar = (RLWEParameters)RLWEParamSets.RLWEN256Q7681.DeepCopy();
RLWEKeyGenerator mkgen = new RLWEKeyGenerator(mpar);
IAsymmetricKeyPair akp = mkgen.GenerateKeyPair();
RLWEPublicKey pub = (RLWEPublicKey)akp.PublicKey;
byte[] enc = pub.ToBytes();
using (RLWEPublicKey pub2 = RLWEPublicKey.From(enc))
{
if (!pub.Equals(pub2))
throw new Exception("EncryptionKey: public key comparison test failed!");
}
OnProgress(new TestEventArgs("Passed public key serialization"));
MemoryStream pubstr = pub.ToStream();
using (RLWEPublicKey pub2 = RLWEPublicKey.From(pubstr))
{
if (!pub.Equals(pub2))
throw new Exception("EncryptionKey: public key comparison test failed!");
}
pubstr.Dispose();
OnProgress(new TestEventArgs("Passed public key stream test"));
RLWEPrivateKey pri = (RLWEPrivateKey)akp.PrivateKey;
enc = pri.ToBytes();
using (RLWEPrivateKey pri2 = RLWEPrivateKey.From(enc))
{
if (!pri.Equals(pri2))
throw new Exception("EncryptionKey: private key comparison test failed!");
}
OnProgress(new TestEventArgs("Passed private key serialization"));
MemoryStream pristr = pri.ToStream();
using (RLWEPrivateKey pri2 = RLWEPrivateKey.From(pristr))
{
if (!pri.Equals(pri2))
throw new Exception("EncryptionKey: private key comparison test failed!");
}
pristr.Dispose();
OnProgress(new TestEventArgs("Passed private key stream test"));
using (RLWEEncrypt mpe = new RLWEEncrypt(mpar))
{
mpe.Initialize(akp.PublicKey);
int sz = mpe.MaxPlainText;
byte[] data = new byte[sz];
new VTDev.Libraries.CEXEngine.Crypto.Prng.CSPRng().GetBytes(data);
enc = mpe.Encrypt(data);
mpe.Initialize(akp.PrivateKey);
byte[] dec = mpe.Decrypt(enc);
if (!Compare.AreEqual(dec, data))
throw new Exception("EncryptionKey: decryption failure!");
OnProgress(new TestEventArgs("Passed encryption test"));
}
pri.Dispose();
pub.Dispose();
}
