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doc/release-notes: Document changed bytespersigop behaviour

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Luke Dashjr 2016-08-09 03:07:03 +00:00 • committed by Pieter Wuille
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@ -253,6 +253,19 @@ RPC call `generatetoaddress` has been added to mine to a specific address. This
works with wallet disabled. 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 Low-level P2P changes
---------------------- ----------------------