diff --git a/tools/peek/ndn-poke.cpp b/tools/peek/ndn-poke.cpp
index 9f285a0..9ef3c53 100644
--- a/tools/peek/ndn-poke.cpp
+++ b/tools/peek/ndn-poke.cpp
@@ -164,13 +164,16 @@
       }
     }
 
-    if (m_isUseDigestSha256Set)
-      m_keyChain.signWithSha256(*dataPacket);
+    if (m_isUseDigestSha256Set) {
+      m_keyChain.sign(*dataPacket, signingWithSha256());
+    }
     else {
-      if (m_identityName == nullptr)
+      if (m_identityName == nullptr) {
         m_keyChain.sign(*dataPacket);
-      else
-        m_keyChain.signByIdentity(*dataPacket, *m_identityName);
+      }
+      else {
+        m_keyChain.sign(*dataPacket, signingByIdentity(*m_identityName));
+      }
     }
 
     return dataPacket;
diff --git a/tools/ping/server/ping-server.cpp b/tools/ping/server/ping-server.cpp
index 699da5b..f919113 100644
--- a/tools/ping/server/ping-server.cpp
+++ b/tools/ping/server/ping-server.cpp
@@ -66,7 +66,7 @@
   shared_ptr<Data> data = make_shared<Data>(interestName);
   data->setFreshnessPeriod(m_options.freshnessPeriod);
   data->setContent(m_payload);
-  m_keyChain.signWithSha256(*data);
+  m_keyChain.sign(*data, signingWithSha256());
   m_face.put(*data);
 
   ++m_nPings;