security: Add SignatureSha256

Change-Id: Id9a61f898d12a6b289a24adb594471b26d3513d6
diff --git a/src/security/certificate-cache-ttl.cpp b/src/security/certificate-cache-ttl.cpp
index 0892789..6f831d0 100644
--- a/src/security/certificate-cache-ttl.cpp
+++ b/src/security/certificate-cache-ttl.cpp
@@ -11,7 +11,7 @@
 
 #include "../util/logging.hpp"
 
-INIT_LOGGER("CertificateCacheTtl")
+INIT_LOGGER("ndn.CertificateCacheTtl")
 
 using namespace std;