// not used, public/private keys are input variables for this plugin
private void generateKeys()
{
BigInteger twoPowModulusBits, n_plus1;
p = BigIntegerHelper.RandomPrimeBits(keyBitLength - (keyBitLength / 2));
q = BigIntegerHelper.RandomPrimeBits(keyBitLength / 2);
n = p * q;
// Just complete PK: n^2
n_plus1 = n + 1;
n_square = n * n;
// compute lambda
p_minus1 = p - 1;
q_minus1 = q - 1;
lambda = BigIntegerHelper.LCM(p_minus1, q_minus1);
// Compute n^(-1)
twoPowModulusBits = 1 << keyBitLength;
n_inv = BigIntegerHelper.ModInverse(n, twoPowModulusBits);
// Store the L(lambda)-part for decryption
decDiv = BigInteger.ModPow(n + 1, lambda, n_square);
decDiv = BigIntegerHelper.ModInverse(L(decDiv), n);
p_square = p * p;
q_square = q * q;
hp = BigIntegerHelper.ModInverse((BigInteger.ModPow(n + 1, p_minus1, p_square) - 1) / p, p);
hq = BigIntegerHelper.ModInverse((BigInteger.ModPow(n + 1, q_minus1, q_square) - 1) / q, q);
// for CRT
BigInteger s, t;
BigIntegerHelper.ExtEuclid(p, q, out s, out t);
ep = s * p;
eq = t * q;
// CRT Encryption:
BigIntegerHelper.ExtEuclid(p_square, q_square, out s, out t);
ep2 = s * p_square;
eq2 = t * q_square;
}