Eliptic scalarmult

[hongyuefan]

hi，its about ScalarMult(x1, y1 *big.Int, k []byte) (x, y *big.Int) ；

for example ：

I have one point on the ellipse. ( x , y ).

1. x1 , y1 := ScalarMult( x , y , g)

2. gm = big.NewInt(0).ModInverse(g, elliptic.Params().P) //gm = [g -1 Mod P]x2,y2 := ScalarMult(x1 , y1 , gm)

because g * gm mod p = 1; so (x2, y2) should equal to (x , y) , but its not.

could anyone help me ?

[lutzhorn]

@hongyuefan

but its not

What is is instead?

[NobbZ (Norbert Melzer)]

@hongyuefan

could anyone help me ?

Please show some more code which shows your actual problem. Use the official go playground to create such an example. Please make sure that outputs the values as you get them.

Especially make sure that your code includes ScalarMult()!

[hongyuefan]

tks，everyone ，i got it.