how to get 'generator point' for Monero transaction

Question

I am using get_transactions of daemon rpc to get specifics of a transaction.

Trying to check incoming transactions manually by checking this method :

is_mine(out, R, i): P = Hs(8aR||i)G + B return P == out

Credits to jtgrassie

How do I get G from get_transactions?

G is not in the tx, it's a pre agreed upon generator point of the ed25519 curve. See this q/a which explains further. — jtgrassie, Oct 30 '19 at 14:38
Does the coordinate, agreed upon, hold special meaning. Or is it totally random, that this point was chosen, and not a neighboring point? — Mogens TrasherDK, Nov 01 '19 at 02:52

score 3 · Accepted Answer · answered Oct 30 '19 at 09:58

3

G is {0x58, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66 }.

See src/ringct/rctOps.h, line 65.

answered Oct 30 '19 at 09:58

user36303

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how to get 'generator point' for Monero transaction

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