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authorPieter Wuille <pieter.wuille@gmail.com>2015-05-01 15:21:06 +0200
committerMatt Corallo <git@bluematt.me>2015-06-11 01:03:23 -0700
commit9b4e7d9a5ec0f69c175d23dc9c94ed723147cf45 (patch)
treec03c9ea3ca882d8302e3f7029437de8b9670ef75 /src/script
parenteba2f061a02573b62792614260181c615f753225 (diff)
Add DummySignatureCreator which just creates zeroed sigs
Diffstat (limited to 'src/script')
-rw-r--r--src/script/sign.cpp36
-rw-r--r--src/script/sign.h8
2 files changed, 44 insertions, 0 deletions
diff --git a/src/script/sign.cpp b/src/script/sign.cpp
index eab629cd91..4543ca303f 100644
--- a/src/script/sign.cpp
+++ b/src/script/sign.cpp
@@ -275,3 +275,39 @@ CScript CombineSignatures(const CScript& scriptPubKey, const BaseSignatureChecke
return CombineSignatures(scriptPubKey, checker, txType, vSolutions, stack1, stack2);
}
+
+namespace {
+/** Dummy signature checker which accepts all signatures. */
+class DummySignatureChecker : public BaseSignatureChecker
+{
+public:
+ DummySignatureChecker() {}
+
+ bool CheckSig(const std::vector<unsigned char>& scriptSig, const std::vector<unsigned char>& vchPubKey, const CScript& scriptCode) const
+ {
+ return true;
+ }
+};
+const DummySignatureChecker dummyChecker;
+}
+
+const BaseSignatureChecker& DummySignatureCreator::Checker() const
+{
+ return dummyChecker;
+}
+
+bool DummySignatureCreator::CreateSig(std::vector<unsigned char>& vchSig, const CKeyID& keyid, const CScript& scriptCode) const
+{
+ // Create a dummy signature that is a valid DER-encoding
+ vchSig.assign(72, '\000');
+ vchSig[0] = 0x30;
+ vchSig[1] = 69;
+ vchSig[2] = 0x02;
+ vchSig[3] = 33;
+ vchSig[4] = 0x01;
+ vchSig[4 + 33] = 0x02;
+ vchSig[5 + 33] = 32;
+ vchSig[6 + 33] = 0x01;
+ vchSig[6 + 33 + 32] = SIGHASH_ALL;
+ return true;
+}
diff --git a/src/script/sign.h b/src/script/sign.h
index 0c4cf61e5e..13f45007dd 100644
--- a/src/script/sign.h
+++ b/src/script/sign.h
@@ -43,6 +43,14 @@ public:
bool CreateSig(std::vector<unsigned char>& vchSig, const CKeyID& keyid, const CScript& scriptCode) const;
};
+/** A signature creator that just produces 72-byte empty signatyres. */
+class DummySignatureCreator : public BaseSignatureCreator {
+public:
+ DummySignatureCreator(const CKeyStore* keystoreIn) : BaseSignatureCreator(keystoreIn) {}
+ const BaseSignatureChecker& Checker() const;
+ bool CreateSig(std::vector<unsigned char>& vchSig, const CKeyID& keyid, const CScript& scriptCode) const;
+};
+
/** Produce a script signature using a generic signature creator. */
bool ProduceSignature(const BaseSignatureCreator& creator, const CScript& scriptPubKey, CScript& scriptSig);