diff --git a/ndn-cpp/encoding/BinaryXMLWireFormat.hpp b/ndn-cpp/encoding/BinaryXMLWireFormat.hpp
index f8cf1eb..c757103 100644
--- a/ndn-cpp/encoding/BinaryXMLWireFormat.hpp
+++ b/ndn-cpp/encoding/BinaryXMLWireFormat.hpp
@@ -15,10 +15,10 @@
 class BinaryXMLWireFormat : public WireFormat {
 public:
   virtual void encodeName(Name &name, std::vector<unsigned char> &output);
-  virtual void decodeName(Name &name, std::vector<unsigned char> &input);
+  virtual void decodeName(Name &name, const unsigned char *input, unsigned int inputLength);
 
   virtual void encodeInterest(Interest &interest, std::vector<unsigned char> &output);
-  virtual void decodeInterest(Interest &interest, std::vector<unsigned char> &input);
+  virtual void decodeInterest(Interest &interest, const unsigned char *input, unsigned int inputLength);
   
   static BinaryXMLWireFormat &instance() { return instance_; }
   
diff --git a/ndn-cpp/encoding/WireFormat.cpp b/ndn-cpp/encoding/WireFormat.cpp
index a66abb0..f9694f5 100644
--- a/ndn-cpp/encoding/WireFormat.cpp
+++ b/ndn-cpp/encoding/WireFormat.cpp
@@ -15,7 +15,7 @@
 {
   throw logic_error("unimplemented");
 }
-void WireFormat::decodeName(Name &name, vector<unsigned char> &input) 
+void WireFormat::decodeName(Name &name, const unsigned char *input, unsigned int inputLength) 
 {
   throw logic_error("unimplemented");
 }
@@ -24,7 +24,7 @@
 {
   throw logic_error("unimplemented");
 }
-void WireFormat::decodeInterest(Interest &interest, vector<unsigned char> &input) 
+void WireFormat::decodeInterest(Interest &interest, const unsigned char *input, unsigned int inputLength) 
 {
   throw logic_error("unimplemented");
 }
diff --git a/ndn-cpp/encoding/WireFormat.hpp b/ndn-cpp/encoding/WireFormat.hpp
index 2c90c1b..2e56a2e 100644
--- a/ndn-cpp/encoding/WireFormat.hpp
+++ b/ndn-cpp/encoding/WireFormat.hpp
@@ -18,10 +18,10 @@
 class WireFormat {
 public:
   virtual void encodeName(Name &name, std::vector<unsigned char> &output);
-  virtual void decodeName(Name &name, std::vector<unsigned char> &input);
+  virtual void decodeName(Name &name, const unsigned char *input, unsigned int inputLength);
 
   virtual void encodeInterest(Interest &interest, std::vector<unsigned char> &output);
-  virtual void decodeInterest(Interest &interest, std::vector<unsigned char> &input);
+  virtual void decodeInterest(Interest &interest, const unsigned char *input, unsigned int inputLength);
 
   // etc. for each type of object.
 };