diff --git a/src/Serializer.cpp b/src/Serializer.cpp
index 32b7175ffe..8bbd0b4c72 100644
--- a/src/Serializer.cpp
+++ b/src/Serializer.cpp
@@ -64,6 +64,13 @@ int Serializer::addRaw(const std::vector<unsigned char> &vector)
 	return ret;
 }
 
+int Serializer::addRaw(const Serializer &s)
+{
+	int ret = mData.size();
+	mData.insert(mData.end(), s.begin(), s.end());
+	return ret;
+}
+
 int Serializer::addRaw(const void *ptr, int len)
 {
 	int ret = mData.size();
diff --git a/src/Serializer.h b/src/Serializer.h
index 1a038251c0..c10805e175 100644
--- a/src/Serializer.h
+++ b/src/Serializer.h
@@ -35,6 +35,7 @@ class Serializer
 	int add256(const uint256&);		// transaction and ledger hashes
 	int addRaw(const std::vector<unsigned char> &vector);
 	int addRaw(const void *ptr, int len);
+	int addRaw(const Serializer& s);
 
 	int addVL(const std::vector<unsigned char> &vector);
 	int addVL(const void *ptr, int len);
@@ -61,7 +62,6 @@ class Serializer
 	bool getTaggedList(std::list<TaggedListItem>&, int offset, int& length) const;
 	bool getTaggedList(std::vector<TaggedListItem>&, int offset, int& length) const;
 
-
 	// hash functions
 	uint160 getRIPEMD160(int size=-1) const;
 	uint256 getSHA256(int size=-1) const;
@@ -81,7 +81,14 @@ class Serializer
 	void erase() { mData.clear(); }
 	int removeLastByte();
 	bool chop(int num);
-	
+
+	// vector-like functions
+	std::vector<unsigned char>::iterator begin() { return mData.begin(); }
+	std::vector<unsigned char>::iterator end() { return mData.end(); }
+	std::vector<unsigned char>::const_iterator begin() const { return mData.begin(); }
+	std::vector<unsigned char>::const_iterator end() const { return mData.end(); }
+	std::vector<unsigned char>::size_type size() const { return mData.size(); }
+
 	// signature functions
 	bool checkSignature(int pubkeyOffset, int signatureOffset) const;
 	bool checkSignature(const std::vector<unsigned char>& signature, CKey& rkey) const;