MIRACL Cryptographic SDK: Multiprecision Integer and Rational Arithmetic Cryptographic Library is a C software library that is widely regarded by developers as the gold standard open source SDK for elliptic curve cryptography (ECC).
struct im_Primepair
{
Big Prime_p;
Big Prime_q;
Big lambda;
Big g;
};
void Bullet_Setup(const int n, Bullet_PP &pp)
{
pp.g = random_gg();
pp.h = random_gg();
}
ECn random_gg()
{
Big r = rand(q); //q is a based prime number
ECn G = BasePoint;
G *= r;
return G;
}
void im_Setup(const int keyLength, im_Primepair& pp)
{
GenPrimePair(pp.Prime_p, pp.Prime_q, keyLength);//Produces unequal prime pairs
Big n = pp.Prime_p * pp.Prime_q;
pp.lambda = lcm(pp.Prime_p - 1, pp.Prime_q - 1);
pp.g = generateRankNumber(pp.lambda, n);//pp.lambda=lcm(p-1,q-1)
}
Big generateRankNumber(const Big& m, const Big& n) {
Big ret,temp;
while (true) {
ret = generateCoprimeNumber(n n);
temp = pow(ret, m, n n);
temp = L_function(ret, n);
if (gcd(temp, n) == 1) { return ret; }
}
}
Functions Bullet_Setup and imP_Setup cannot be run together, otherwise the above error will occur，why？
main{ int range = 32; int intLength=64;
imP_Primepair primepair; Bullet_PP pedprm;
Bullet_Setup(range, pedprm); imP_Setup(intLength, primepair); }
struct Bullet_PP { ECn g, h; };
struct im_Primepair { Big Prime_p; Big Prime_q; Big lambda; Big g; };
void Bullet_Setup(const int n, Bullet_PP &pp) { pp.g = random_gg(); pp.h = random_gg(); }
ECn random_gg() { Big r = rand(q); //q is a based prime number ECn G = BasePoint; G *= r; return G; }
void im_Setup(const int keyLength, im_Primepair& pp) { GenPrimePair(pp.Prime_p, pp.Prime_q, keyLength);//Produces unequal prime pairs Big n = pp.Prime_p * pp.Prime_q; pp.lambda = lcm(pp.Prime_p - 1, pp.Prime_q - 1); pp.g = generateRankNumber(pp.lambda, n);//pp.lambda=lcm(p-1,q-1) }
Big generateRankNumber(const Big& m, const Big& n) { Big ret,temp; while (true) { ret = generateCoprimeNumber(n n); temp = pow(ret, m, n n); temp = L_function(ret, n); if (gcd(temp, n) == 1) { return ret; } } }