libera #monero-dev

8 Mar 2025

Official repo: github.com/monero-project/monero || Don’t ask to ask, just ask:) || Monero GUI dev is at #monero-gui || Monero website dev is at #monero-site || Non-dev questions -> #monero, please || No fork help, you’re on your own

• 00:04
  m-relay
  <g​igglemonster44:matrix.org> Yes
• 00:05
  m-relay
  <g​igglemonster44:matrix.org> Thank you, this is great, really appreciate it!
• 07:59
  m-relay
  <n​ot_a_money_printer:matrix.org> I am trying to understand how public spend key and view key get generated
• 07:59
  m-relay
  <n​ot_a_money_printer:matrix.org> Zero to monero says it is generated using this formula
• 08:00
  m-relay
  <n​ot_a_money_printer:matrix.org> (Public view key, public spend key) = (private view key, private spend key) multiply generator point
• 08:01
  m-relay
  <n​ot_a_money_printer:matrix.org> So this is basically trying to multiply a point made up of private keys with generator point
• 08:01
  m-relay
  <n​ot_a_money_printer:matrix.org> But isn
• 08:01
  m-relay
  <n​ot_a_money_printer:matrix.org> But isn't for elliptic curve there is only point addition and scalar multiplication? How can you multiply two points?
• 08:09
  moneromooo
  The secret key is a scalar.
• 08:09
  m-relay
  <n​ot_a_money_printer:matrix.org> Oh, so it is two independent scalar multiplication for generating the public keys
• 08:11
  moneromooo
  Generating the spend public key only needs the spend secret key, not the view one. And vice versa.
• 08:12
  moneromooo
  At least for current monero. I have no idea the new addressing scheme works.
• 08:14
  m-relay
  <n​ot_a_money_printer:matrix.org> Thanks
• 08:16
  m-relay
  <n​ot_a_money_printer:matrix.org> Also for generating the subaddress "master monero" gives this formula : Public view key subi = private view key * Public spend key subi
• 08:16
  m-relay
  <n​ot_a_money_printer:matrix.org> So we are doing a modular integer multiplication here for?
• 08:26
  m-relay
  <j​effro256:monero.social> No, another scalar-point multiplication
• 08:27
  m-relay
  <j​effro256:monero.social> The private keys are scalars. The public keys are points. Multiplying a scalar by a point yields a point
• 08:37
  m-relay
  <n​ot_a_money_printer:matrix.org> Thanks, how can I find the code related to this in the monero repo?
• 10:34
  moneromooo
  secret_key_to_public_key IIRC.
• 10:34
  moneromooo
  in src/crypto
• 17:30
  m-relay
  <e​dgzoah:matrix.org> hi, have someone recent
• 17:33
  m-relay
  <e​dgzoah:matrix.org> hi, have someone recently used mymonero-utils/mymonero-monero-client, specifically WABridge.createTransaction and can confirm it's working. Cause i am getting an error related to emscripten:
• 17:33
  m-relay
  <e​dgzoah:matrix.org> Invalid UTF-8 leading byte 0xba encountered when deserializing a UTF-8 string in wasm memory to a JS string!
• 17:33
  m-relay
  <e​dgzoah:matrix.org> Any help would be apreciated.
• 17:57
  m-relay
  <j​effro256:monero.social> Maybe ask in Monero Community Dev ?