I was looking at this question and i can`t understand this part:

QA = dA G

= 5 (5,1)

= (9,16)

I saw that algorithm used for this was Double-and-add algorithm but i didn't get it. Can anyone explain how can i do this calculation on papir?

  • $\begingroup$ A possible duplicate of Problem on Elliptic Curve Point Doubling $\endgroup$
    – kelalaka
    Jul 29 '19 at 20:11
  • 1
    $\begingroup$ Thank you for pointing me in a right direction $\endgroup$ Jul 29 '19 at 20:58
  • $\begingroup$ @FilipFilipovic Does the linked question answer your question in a satisfactory manner? $\endgroup$
    – Ella Rose
    Jul 29 '19 at 21:04
  • $\begingroup$ @EllaRose Yes, that explains it very good. $\endgroup$ Jul 29 '19 at 23:11
  • $\begingroup$ I've closed the question (putting it on hold) as you've indicated that the other Q/A already explains your problem. If you have any remaining / followup question it is probably best to create a new one. And welcome to crypto, of course :) $\endgroup$
    – Maarten Bodewes
    Jul 29 '19 at 23:27

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