Add P2WSH destination helper and use it instead of manual hashing

1 files changed, 7 insertions, 3 deletions

diff --git a/src/script/standard.cpp b/src/script/standard.cpp
index d9269d614..f0b2c62a9 100644
--- a/src/script/standard.cpp
+++ b/src/script/standard.cpp
@@ -5,6 +5,7 @@
 
 #include <script/standard.h>
 
+#include <crypto/sha256.h>
 #include <pubkey.h>
 #include <script/script.h>
 #include <util.h>
@@ -18,6 +19,11 @@ unsigned nMaxDatacarrierBytes = MAX_OP_RETURN_RELAY;
 
 CScriptID::CScriptID(const CScript& in) : uint160(Hash160(in.begin(), in.end())) {}
 
+WitnessV0ScriptHash::WitnessV0ScriptHash(const CScript& in)
+{
+    CSHA256().Write(in.data(), in.size()).Finalize(begin());
+}
+
 const char* GetTxnOutputType(txnouttype t)
 {
     switch (t)
@@ -329,9 +335,7 @@ CScript GetScriptForWitness(const CScript& redeemscript)
             return GetScriptForDestination(WitnessV0KeyHash(vSolutions[0]));
         }
     }
-    uint256 hash;
-    CSHA256().Write(&redeemscript[0], redeemscript.size()).Finalize(hash.begin());
-    return GetScriptForDestination(WitnessV0ScriptHash(hash));
+    return GetScriptForDestination(WitnessV0ScriptHash(redeemscript));
 }
 
 bool IsValidDestination(const CTxDestination& dest) {