Quote from: kTimesG on Today at 03:50:42 PM

Quote from: RetiredCoder on Today at 10:27:05 AM

Another explanation:
It's a special point, if you apply endomorphism for it, you will get previous point (Point - G).
It's funny to have two points next to each other with same Y, isn't it?

And since you know the distance between these two points, you can calculate the private key easily.

It was all about the wording, you made it sound as if there are two points next to each other. They are actually private keys next to each other. And the same goes for the distance - it is the distance between the private keys. Anyway, there are at least four keys that have the property which is the basis of your puzzle (same Y, adjacent keys), not just a single one. A better question would be: shouldn't there actually be 6 of them? What happened to lambda^3 = 1? Hmm.

You are much more of a nerd than I am Cheesy