diff --git a/src/ripple_data/protocol/Serializer.cpp b/src/ripple_data/protocol/Serializer.cpp
index f4ca233802..cbe8724462 100644
--- a/src/ripple_data/protocol/Serializer.cpp
+++ b/src/ripple_data/protocol/Serializer.cpp
@@ -380,42 +380,6 @@ uint256 Serializer::getPrefixHash (uint32 prefix, const unsigned char* data, int
     return j[0];
 }
 
-bool Serializer::checkSignature (int pubkeyOffset, int signatureOffset) const
-{
-    Blob pubkey, signature;
-
-    if (!getRaw (pubkey, pubkeyOffset, 65)) return false;
-
-    if (!getRaw (signature, signatureOffset, 72)) return false;
-
-    CKey pubCKey;
-
-    if (!pubCKey.SetPubKey (pubkey)) return false;
-
-    return pubCKey.Verify (getSHA512Half (signatureOffset), signature);
-}
-
-bool Serializer::checkSignature (Blob const& signature, CKey& key) const
-{
-    return key.Verify (getSHA512Half (), signature);
-}
-
-bool Serializer::makeSignature (Blob& signature, CKey& key) const
-{
-    return key.Sign (getSHA512Half (), signature);
-}
-
-bool Serializer::addSignature (CKey& key)
-{
-    Blob signature;
-
-    if (!key.Sign (getSHA512Half (), signature)) return false;
-
-    assert (signature.size () == 72);
-    addRaw (signature);
-    return true;
-}
-
 int Serializer::addVL (Blob const& vector)
 {
     int ret = addRaw (encodeVL (vector.size ()));
diff --git a/src/ripple_data/protocol/Serializer.h b/src/ripple_data/protocol/Serializer.h
index eb5f18d5da..fdcfde7c48 100644
--- a/src/ripple_data/protocol/Serializer.h
+++ b/src/ripple_data/protocol/Serializer.h
@@ -217,12 +217,6 @@ public:
         return v.mData != mData;
     }
 
-    // signature functions
-    bool checkSignature (int pubkeyOffset, int signatureOffset) const;
-    bool checkSignature (Blob const& signature, CKey& rkey) const;
-    bool makeSignature (Blob& signature, CKey& rkey) const;
-    bool addSignature (CKey& rkey);
-
     // low-level VL length encode/decode functions
     static Blob encodeVL (int length);
     static int lengthVL (int length)