private void ButtonTranspose_Click(object sender, RoutedEventArgs e)
{
LatticeND tempLattice = viewModel.SetLattice(latticeGrid, useRowVectors);
tempLattice.Transpose();
int tmp = n;
n = m;
m = tmp;
BuildLatticeGrid(tempLattice, false);
}
public void LWETest()
{
//Test for single bit encryption
//Example taken from my own master thesis (sadly in the absence of an alternative example)
VectorND[] SVectors =
{
new VectorND(new BigInteger[] { 7, 7 })
};
LatticeND S = new LatticeND(SVectors, false);
VectorND[] AVectors =
{
new VectorND(new BigInteger[] { 4, 3, 4, 0, 5 }),
new VectorND(new BigInteger[] { 3, 3, 0, 7, 1 })
};
LatticeND A = new LatticeND(AVectors, false);
VectorND[] eVectors =
{
new VectorND(new BigInteger[] { 7, 2, 4, 5, 2 })
};
LatticeND e = new LatticeND(eVectors, false);
const int q = 9;
LWEModel lwe = new LWEModel(S.ToMatrixND(), A.ToMatrixND(), e.ToMatrixND(), q, 1);
VectorND[] rVectors =
{
new VectorND(new BigInteger[] { 1, 1, 0, 0, 0 })
};
LatticeND r = new LatticeND(rVectors, false);
r.Transpose();
lwe.SetRandomVector(r.ToMatrixND());
//Cryptosystem correct?
VectorND[] BVectors =
{
new VectorND(new BigInteger[] { 2, 8, 5, 0, 8 })
};
LatticeND B = new LatticeND(BVectors, false);
Assert.AreEqual(B.ToMatrixND().ToString(), lwe.B.ToString());
//Encryption and decryption correct?
//Message = 0
MatrixND messageMatrix = new MatrixND(1, 1);
messageMatrix[0, 0] = 0;
MatrixND cipher = lwe.Encrypt(messageMatrix);
MatrixND expectedCipherMatrix = new MatrixND(1, 1);
expectedCipherMatrix[0, 0] = 1;
Assert.AreEqual(cipher.ToString(), expectedCipherMatrix.ToString());
MatrixND decryptedMessage = lwe.Decrypt(cipher);
Assert.AreEqual(messageMatrix.ToString(), decryptedMessage.ToString());
//Message = 1
messageMatrix[0, 0] = 1;
cipher = lwe.Encrypt(messageMatrix);
expectedCipherMatrix[0, 0] = 5;
Assert.AreEqual(cipher.ToString(), expectedCipherMatrix.ToString());
decryptedMessage = lwe.Decrypt(cipher);
Assert.AreEqual(messageMatrix.ToString(), decryptedMessage.ToString());
}