diff --git a/daemon/mgmt/manager-base.cpp b/daemon/mgmt/manager-base.cpp
index a39bbd6..ee5f782 100644
--- a/daemon/mgmt/manager-base.cpp
+++ b/daemon/mgmt/manager-base.cpp
@@ -1,6 +1,6 @@
 /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
 /*
- * Copyright (c) 2014-2021,  Regents of the University of California,
+ * Copyright (c) 2014-2022,  Regents of the University of California,
  *                           Arizona Board of Regents,
  *                           Colorado State University,
  *                           University Pierre & Marie Curie, Sorbonne University,
@@ -58,22 +58,20 @@
   return m_dispatcher.addNotificationStream(makeRelPrefix(verb));
 }
 
-void
-ManagerBase::extractRequester(const Interest& interest,
-                              const ndn::mgmt::AcceptContinuation& accept)
+std::string
+ManagerBase::extractSigner(const Interest& interest)
 {
-  const Name& interestName = interest.getName();
-
   try {
-    ndn::SignatureInfo sigInfo(interestName.at(ndn::signed_interest::POS_SIG_INFO).blockFromValue());
-    if (!sigInfo.hasKeyLocator() || sigInfo.getKeyLocator().getType() != tlv::Name) {
-      return accept("");
+    // try v0.3 format first
+    auto sigInfo = interest.getSignatureInfo();
+    if (!sigInfo) {
+      // fallback to v0.2 format
+      sigInfo.emplace(interest.getName().at(ndn::signed_interest::POS_SIG_INFO).blockFromValue());
     }
-
-    accept(sigInfo.getKeyLocator().getName().toUri());
+    return sigInfo->getKeyLocator().getName().toUri();
   }
   catch (const tlv::Error&) {
-    accept("");
+    return "";
   }
 }
 
diff --git a/daemon/mgmt/manager-base.hpp b/daemon/mgmt/manager-base.hpp
index eeb55f5..592d4fa 100644
--- a/daemon/mgmt/manager-base.hpp
+++ b/daemon/mgmt/manager-base.hpp
@@ -1,6 +1,6 @@
 /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
 /*
- * Copyright (c) 2014-2021,  Regents of the University of California,
+ * Copyright (c) 2014-2022,  Regents of the University of California,
  *                           Arizona Board of Regents,
  *                           Colorado State University,
  *                           University Pierre & Marie Curie, Sorbonne University,
@@ -92,15 +92,13 @@
 
 NFD_PUBLIC_WITH_TESTS_ELSE_PROTECTED: // helpers
   /**
-   * @brief Extracts the requester from a ControlCommand request.
+   * @brief Extracts the name from the %KeyLocator of a ControlCommand request.
    *
    * This is called after the signature has been validated.
-   *
-   * @param interest a request for ControlCommand
-   * @param accept callback of successful validation, takes the requester string as argument
+   * Returns an empty string if %SignatureInfo or %KeyLocator are missing or malformed.
    */
-  static void
-  extractRequester(const Interest& interest, const ndn::mgmt::AcceptContinuation& accept);
+  static std::string
+  extractSigner(const Interest& interest);
 
 NFD_PUBLIC_WITH_TESTS_ELSE_PRIVATE:
   /**
diff --git a/daemon/mgmt/rib-manager.cpp b/daemon/mgmt/rib-manager.cpp
index afeca1c..484b4eb 100644
--- a/daemon/mgmt/rib-manager.cpp
+++ b/daemon/mgmt/rib-manager.cpp
@@ -313,7 +313,7 @@
 
     auto& validator = prefix == LOCALHOST_TOP_PREFIX ? m_localhostValidator : m_localhopValidator;
     validator.validate(interest,
-                       [&interest, accept] (auto&&...) { extractRequester(interest, accept); },
+                       [&interest, accept] (auto&&...) { accept(extractSigner(interest)); },
                        [reject] (auto&&...) { reject(ndn::mgmt::RejectReply::STATUS403); });
   };
 }