From 5e499e7a56b2e343e0a9b169cd95f181bdd3e334 Mon Sep 17 00:00:00 2001 From: Luke Dashjr Date: Tue, 9 Aug 2016 03:07:03 +0000 Subject: [PATCH] doc/release-notes: Document changed bytespersigop behaviour --- doc/release-notes.md | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/doc/release-notes.md b/doc/release-notes.md index 23687eccc..5dd3f5a65 100644 --- a/doc/release-notes.md +++ b/doc/release-notes.md @@ -253,6 +253,19 @@ RPC call `generatetoaddress` has been added to mine to a specific address. This works with wallet disabled. +New bytespersigop implementation +-------------------------------- + +The former implementation of the bytespersigop filter accidentally broke bare +multisig (which is meant to be controlled by the `permitbaremultisig` option), +since the consensus protocol always counts these older transaction forms as 20 +sigops for backwards compatibility. Simply fixing this bug by counting more +accurately would have reintroduced a vulnerability. It has therefore been +replaced with a new implementation that rather than filter such transactions, +instead treats them (for fee purposes only) as if they were in fact the size +of a transaction actually using all 20 sigops. + + Low-level P2P changes ----------------------