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)));
}
}
private void TestKey()
{
RLWEParameters encParams = RLWEParamSets.RLWEN256Q7681;
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"));
}
static double Decrypt(int Iterations, RLWEParameters Param)
{
RLWEKeyGenerator mkgen = new RLWEKeyGenerator(Param);
IAsymmetricKeyPair akp = mkgen.GenerateKeyPair();
byte[] ptext = new CSPRng().GetBytes(Param.N >> 3);
byte[] rtext = new byte[Param.N >> 3];
byte[] ctext;
Stopwatch runTimer = new Stopwatch();
using (RLWEEncrypt mpe = new RLWEEncrypt(Param))
{
mpe.Initialize(akp.PublicKey);
ctext = mpe.Encrypt(ptext);
mpe.Initialize(akp.PrivateKey);
runTimer.Start();
for (int i = 0; i < Iterations; i++)
{
rtext = mpe.Decrypt(ctext);
}
runTimer.Stop();
}
//if (!Compare.AreEqual(ptext, rtext))
// throw new Exception("Encryption test: decryption failure!");
return(runTimer.Elapsed.TotalMilliseconds);
}
static void FullCycle(RLWEParameters Param)
{
RLWEKeyGenerator mkgen = new RLWEKeyGenerator(Param);
IAsymmetricKeyPair akp = mkgen.GenerateKeyPair();
byte[] enc;
using (RLWEEncrypt mpe = new RLWEEncrypt(Param))
{
mpe.Initialize(akp.PublicKey);
byte[] data = new byte[mpe.MaxPlainText];
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!");
}
}
}
static double Encrypt(int Iterations, RLWEParameters Param)
{
RLWEKeyGenerator mkgen = new RLWEKeyGenerator(Param);
IAsymmetricKeyPair akp = mkgen.GenerateKeyPair();
byte[] ptext = new CSPRng().GetBytes(Param.N >> 3);
byte[] ctext;
Stopwatch runTimer = new Stopwatch();
using (RLWEEncrypt mpe = new RLWEEncrypt(Param))
{
mpe.Initialize(akp.PublicKey);
runTimer.Start();
for (int i = 0; i < Iterations; i++)
{
ctext = mpe.Encrypt(ptext);
}
runTimer.Stop();
}
return(runTimer.Elapsed.TotalMilliseconds);
}
private void TestEncode()
{
RLWEParameters mpar = RLWEParamSets.RLWEN256Q7681;
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();
}
