curve/dhellman/z_test.go

package dhellman

import (
	"context"
	"log"
	"math/big"
	"testing"

	"git.ali33.ru/fcg-xvii/curve/v2/tools"
)

func TestMessage(t *testing.T) {
	c, err := tools.NewCurve(
		big.NewInt(2),
		big.NewInt(4),
	)
	if err != nil {
		t.Fatal(err)
	}
	p := tools.SearchPrime(big.NewInt(10000))
	if err = c.SetP(p); err != nil {
		t.Fatal(err)
	}
	if err = c.SetGRandom(context.Background()); err != nil {
		t.Fatal(err)
	}
	p1, _ := randomCurveKeyPair(c)
	p2, _ := randomCurveKeyPair(c)
	log.Println(p1.priv.x, p1.pub.p)
	log.Println(p2.priv.x, p2.pub.p)
	log.Println(p1.priv.secret(p2.pub))
	log.Println(p2.priv.secret(p1.pub))

	message := []byte("Hello, WORLD!!!")
	encoded, err := p1.messageEncode(message, p2.pub)
	if err != nil {
		t.Fatal(err)
	}
	log.Println(encoded)
	data, err := p2.messageDecode(encoded, p1.pub)
	if err != nil {
		t.Fatal(err)
	}
	log.Println(string(data))
	aPair, err := p2.pub.attack(context.Background())
	if err != nil {
		t.Fatal(err)
	}
	p2.Map().LogPretty()
	aPair.Map().LogPretty()
	log.Println(p1.priv.secret(p2.pub))
	log.Println(p2.priv.secret(p1.pub))
	log.Println(aPair.priv.secret(p1.pub))

	data, err = p2.messageDecode(encoded, p1.pub)
	log.Println(string(data), err)
	data, err = aPair.messageDecode(encoded, p1.pub)
	log.Println(string(data), err)
}