diff --git a/certs_manager.hpp b/certs_manager.hpp
index 91c5e43..9dd128d 100644
--- a/certs_manager.hpp
+++ b/certs_manager.hpp
@@ -151,11 +151,11 @@
         std::string organizationalUnit, std::string state, std::string surname,
         std::string unstructuredName) override;
 
-    /** @brief Get reference to certificate
+    /** @brief Get reference to certificates' collection
      *
-     *  @return Reference to certificate
+     *  @return Reference to certificates' collection
      */
-    CertificatePtr& getCertificate();
+    std::vector<std::unique_ptr<Certificate>>& getCertificates();
 
   private:
     void generateCSRHelper(std::vector<std::string> alternativeNames,
@@ -219,7 +219,7 @@
     /** @brief Load certifiate
      *  Load certificate and create certificate object
      */
-    void createCertificate();
+    void createCertificates();
 
     /** @brief Create RSA private key file
      *  Create RSA private key file by generating rsa key if not created
@@ -251,8 +251,8 @@
     /** @brief Certificate file installation path **/
     CertInstallPath certInstallPath;
 
-    /** @brief pointer to certificate */
-    CertificatePtr certificatePtr = nullptr;
+    /** @brief Collection of pointers to certificate */
+    std::vector<std::unique_ptr<Certificate>> installedCerts;
 
     /** @brief pointer to CSR */
     std::unique_ptr<CSR> csrPtr = nullptr;
@@ -265,6 +265,9 @@
 
     /** @brif Parent path i.e certificate directory path */
     fs::path certParentInstallPath;
+
+    /** @brief Certificate ID pool */
+    uint64_t certIdCounter = 1;
 };
 } // namespace certs
 } // namespace phosphor