tests: implement BIP341 test vectors

Author: sipa

src/Makefile.test.include

@@ -16,6 +16,7 @@ FUZZ_BINARY=test/fuzz/fuzz$(EXEEXT)
 
 JSON_TEST_FILES = \
   test/data/script_tests.json \
+  test/data/bip341_wallet_vectors.json \
   test/data/base58_encode_decode.json \
   test/data/blockfilters.json \
   test/data/key_io_valid.json \

src/script/interpreter.cpp

@@ -1483,7 +1483,7 @@ template void PrecomputedTransactionData::Init(const CMutableTransaction& txTo,
 template PrecomputedTransactionData::PrecomputedTransactionData(const CTransaction& txTo);
 template PrecomputedTransactionData::PrecomputedTransactionData(const CMutableTransaction& txTo);
 
-static const CHashWriter HASHER_TAPSIGHASH = TaggedHash("TapSighash");
+const CHashWriter HASHER_TAPSIGHASH = TaggedHash("TapSighash");
 const CHashWriter HASHER_TAPLEAF = TaggedHash("TapLeaf");
 const CHashWriter HASHER_TAPBRANCH = TaggedHash("TapBranch");
 

src/script/interpreter.h

@@ -229,6 +229,7 @@ static constexpr size_t TAPROOT_CONTROL_NODE_SIZE = 32;
 static constexpr size_t TAPROOT_CONTROL_MAX_NODE_COUNT = 128;
 static constexpr size_t TAPROOT_CONTROL_MAX_SIZE = TAPROOT_CONTROL_BASE_SIZE + TAPROOT_CONTROL_NODE_SIZE * TAPROOT_CONTROL_MAX_NODE_COUNT;
 
+extern const CHashWriter HASHER_TAPSIGHASH; //!< Hasher with tag "TapSighash" pre-fed to it.
 extern const CHashWriter HASHER_TAPLEAF;    //!< Hasher with tag "TapLeaf" pre-fed to it.
 extern const CHashWriter HASHER_TAPBRANCH;  //!< Hasher with tag "TapBranch" pre-fed to it.