security: IdentityStorage::addKey publicKeyDer should be const.
diff --git a/ndn-cpp/security/identity/identity-storage.hpp b/ndn-cpp/security/identity/identity-storage.hpp
index daead73..0e22432 100644
--- a/ndn-cpp/security/identity/identity-storage.hpp
+++ b/ndn-cpp/security/identity/identity-storage.hpp
@@ -83,7 +83,7 @@
* @param publicKeyDer A blob of the public key DER to be added.
*/
virtual void
- addKey(const Name& keyName, KeyType keyType, Blob& publicKeyDer) = 0;
+ addKey(const Name& keyName, KeyType keyType, const Blob& publicKeyDer) = 0;
/**
* Get the public key DER blob from the identity storage.