security: Implement most of Certificate.cpp
diff --git a/include/ndn-cpp/security/certificate/certificate.hpp b/include/ndn-cpp/security/certificate/certificate.hpp
index 270bfb0..21745e2 100644
--- a/include/ndn-cpp/security/certificate/certificate.hpp
+++ b/include/ndn-cpp/security/certificate/certificate.hpp
@@ -32,17 +32,13 @@
* Create a Certificate from the content in the data packet.
* @param data The data packet with the content to decode.
*/
-#if 0 // TODO: Define in certificate.cpp
Certificate(const Data& data);
-#else
- Certificate(const Data& data) {}
-#endif
/**
* The virtual destructor.
*/
virtual
- ~Certificate() {}
+ ~Certificate();
/**
* encode certificate info into content