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-rw-r--r--src/script/sign.h8
1 files changed, 7 insertions, 1 deletions
diff --git a/src/script/sign.h b/src/script/sign.h
index 400c0c0865..97c0014cd0 100644
--- a/src/script/sign.h
+++ b/src/script/sign.h
@@ -1,5 +1,5 @@
// Copyright (c) 2009-2010 Satoshi Nakamoto
-// Copyright (c) 2009-2016 The Bitcoin Core developers
+// Copyright (c) 2009-2017 The Bitcoin Core developers
// Distributed under the MIT software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
@@ -81,4 +81,10 @@ SignatureData CombineSignatures(const CScript& scriptPubKey, const BaseSignature
SignatureData DataFromTransaction(const CMutableTransaction& tx, unsigned int nIn);
void UpdateTransaction(CMutableTransaction& tx, unsigned int nIn, const SignatureData& data);
+/* Check whether we know how to sign for an output like this, assuming we
+ * have all private keys. While this function does not need private keys, the passed
+ * keystore is used to look up public keys and redeemscripts by hash.
+ * Solvability is unrelated to whether we consider this output to be ours. */
+bool IsSolvable(const CKeyStore& store, const CScript& script);
+
#endif // BITCOIN_SCRIPT_SIGN_H