java实现双线性映射

news2024/11/23 22:29:36

1.目录结构

2.导包

将jpbc-api-2.0.0.jar和jpbc-plaf-2.0.0.jar导入到java项目中

网盘链接：链接: https://pan.baidu.com/s/1lFLXQj8v_EhL9KZYaaRv1w?pwd=e8db 提取码: e8db

3.编写代码

a.properties

type a
q 8780710799663312522437781984754049815806883199414208211028653399266475630880222957078625179422662221423155858769582317459277713367317481324925129998224791
h 12016012264891146079388821366740534204802954401251311822919615131047207289359704531102844802183906537786776
r 730750818665451621361119245571504901405976559617
exp2 159
exp1 107
sign1 1
sign0 1

BinaryPairing类

import it.unisa.dia.gas.jpbc.Element;
import it.unisa.dia.gas.jpbc.Field;
import it.unisa.dia.gas.jpbc.Pairing;
import it.unisa.dia.gas.plaf.jpbc.pairing.PairingFactory;

public class BinaryPairing {
    public static void main(String[] args) {
        Pairing bp = PairingFactory.getPairing("a.properties");


        Field Zr = bp.getZr();
        Field G1 = bp.getG1();
        Field G2 = bp.getG2();

        Element g1 = G1.newRandomElement();
        Element g2 = G2.newRandomElement();

        Element a = Zr.newRandomElement();
        Element b = Zr.newRandomElement();

        Element g_a = g1.duplicate().powZn(a);
        Element g_b = g2.duplicate().powZn(b);
        Element egg_ab = bp.pairing(g_a, g_b);

        Element egg = bp.pairing(g1, g2);
        Element ab = a.duplicate().mul(b);
        Element egg_ab_p = egg. duplicate().powZn(ab);


        if (egg_ab .isEqual(egg_ab_p))
            System.out.println("Yes");
        else
            System.out.println("No");

    }
}