From a4bf84039c00b196b87f969acf6369d72c56ab46 Mon Sep 17 00:00:00 2001
From: Pieter Wuille <pieter@wuille.net>
Date: Sun, 23 May 2021 17:38:40 -0700
Subject: Separate WitnessV1Taproot variant in CTxDestination

---
 src/key_io.cpp | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

(limited to 'src/key_io.cpp')

diff --git a/src/key_io.cpp b/src/key_io.cpp
index dbcbfa1f29..615f4c9312 100644
--- a/src/key_io.cpp
+++ b/src/key_io.cpp
@@ -54,6 +54,14 @@ public:
         return bech32::Encode(bech32::Encoding::BECH32, m_params.Bech32HRP(), data);
     }
 
+    std::string operator()(const WitnessV1Taproot& tap) const
+    {
+        std::vector<unsigned char> data = {1};
+        data.reserve(53);
+        ConvertBits<8, 5, true>([&](unsigned char c) { data.push_back(c); }, tap.begin(), tap.end());
+        return bech32::Encode(bech32::Encoding::BECH32M, m_params.Bech32HRP(), data);
+    }
+
     std::string operator()(const WitnessUnknown& id) const
     {
         if (id.version < 1 || id.version > 16 || id.length < 2 || id.length > 40) {
@@ -135,6 +143,13 @@ CTxDestination DecodeDestination(const std::string& str, const CChainParams& par
                 return CNoDestination();
             }
 
+            if (version == 1 && data.size() == WITNESS_V1_TAPROOT_SIZE) {
+                static_assert(WITNESS_V1_TAPROOT_SIZE == WitnessV1Taproot::size());
+                WitnessV1Taproot tap;
+                std::copy(data.begin(), data.end(), tap.begin());
+                return tap;
+            }
+
             if (version > 16) {
                 error_str = "Invalid Bech32 address witness version";
                 return CNoDestination();
-- 
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