Make Signature an abstract base class and added subclass Sha256WithRsaSignature. Change Data.signature to a pointer to a Signature.
diff --git a/Makefile.in b/Makefile.in
index 6ba5205..260bf6a 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -156,6 +156,7 @@
am_libndn_cpp_la_OBJECTS = ndn-cpp/common.lo ndn-cpp/data.lo \
ndn-cpp/interest.lo ndn-cpp/key.lo ndn-cpp/face.lo \
ndn-cpp/forwarding-entry.lo ndn-cpp/name.lo ndn-cpp/node.lo \
+ ndn-cpp/sha256-woth-rsa-signature.lo \
ndn-cpp/encoding/binary-xml-element-reader.lo \
ndn-cpp/encoding/binary-xml-wire-format.lo \
ndn-cpp/encoding/wire-format.lo \
@@ -512,6 +513,7 @@
ndn-cpp/name.cpp ndn-cpp/c/name.h ndn-cpp/name.hpp \
ndn-cpp/node.cpp ndn-cpp/node.hpp \
ndn-cpp/publisher-public-key-digest.hpp \
+ ndn-cpp/sha256-woth-rsa-signature.cpp ndn-cpp/sha256-woth-rsa-signature.hpp \
ndn-cpp/c/encoding/binary-xml.h \
ndn-cpp/c/encoding/binary-xml-decoder.h ndn-cpp/encoding/binary-xml-decoder.hpp \
ndn-cpp/c/encoding/binary-xml-element-reader.h ndn-cpp/encoding/binary-xml-element-reader.cpp ndn-cpp/encoding/binary-xml-element-reader.hpp \
@@ -724,6 +726,8 @@
ndn-cpp/$(DEPDIR)/$(am__dirstamp)
ndn-cpp/node.lo: ndn-cpp/$(am__dirstamp) \
ndn-cpp/$(DEPDIR)/$(am__dirstamp)
+ndn-cpp/sha256-woth-rsa-signature.lo: ndn-cpp/$(am__dirstamp) \
+ ndn-cpp/$(DEPDIR)/$(am__dirstamp)
ndn-cpp/encoding/$(am__dirstamp):
@$(MKDIR_P) ndn-cpp/encoding
@: > ndn-cpp/encoding/$(am__dirstamp)
@@ -894,6 +898,7 @@
@AMDEP_TRUE@@am__include@ @am__quote@ndn-cpp/$(DEPDIR)/key.Plo@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@ndn-cpp/$(DEPDIR)/name.Plo@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@ndn-cpp/$(DEPDIR)/node.Plo@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@ndn-cpp/$(DEPDIR)/sha256-woth-rsa-signature.Plo@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@ndn-cpp/c/$(DEPDIR)/errors.Plo@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@ndn-cpp/c/$(DEPDIR)/interest.Plo@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@ndn-cpp/c/$(DEPDIR)/name.Plo@am__quote@