security: Add SignatureSha256

Change-Id: Id9a61f898d12a6b289a24adb594471b26d3513d6
diff --git a/src/security/sec-tpm-osx.cpp b/src/security/sec-tpm-osx.cpp
index 383f021..6436b5a 100644
--- a/src/security/sec-tpm-osx.cpp
+++ b/src/security/sec-tpm-osx.cpp
@@ -26,7 +26,7 @@
 
 using namespace std;
 
-INIT_LOGGER("SecTpmOsx");
+INIT_LOGGER("ndn.SecTpmOsx");
 
 namespace ndn {