From 5de246ca8159dcffaa4c136a60c8bfed2028e2ee Mon Sep 17 00:00:00 2001 From: Johnson Lau Date: Fri, 11 Sep 2020 14:33:10 -0700 Subject: Implement Taproot signature hashing (BIP 341) This implements the new sighashing scheme from BIP341, with all relevant whole-transaction values precomputed once and cached. Includes changes to PrecomputedTransactionData by Pieter Wuille. --- src/script/script.h | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'src/script/script.h') diff --git a/src/script/script.h b/src/script/script.h index c1f2b6692..fcf3e2936 100644 --- a/src/script/script.h +++ b/src/script/script.h @@ -44,6 +44,11 @@ static const unsigned int LOCKTIME_THRESHOLD = 500000000; // Tue Nov 5 00:53:20 // SEQUENCE_FINAL). static const uint32_t LOCKTIME_MAX = 0xFFFFFFFFU; +// Tag for input annex. If there are at least two witness elements for a transaction input, +// and the first byte of the last element is 0x50, this last element is called annex, and +// has meanings independent of the script +static constexpr unsigned int ANNEX_TAG = 0x50; + template std::vector ToByteVector(const T& in) { -- cgit v1.2.3