+const char * OIC_JSON_DPC_NAME = "dpc";
+const char * OIC_JSON_EDP_NAME = "edp";
+const char * OIC_JSON_PIN_NAME = "pin";
+const char * OIC_JSON_PDACL_NAME = "pdacl";
+const char * OIC_JSON_PDDEV_LIST_NAME = "pddev";
+const char * OIC_JSON_ROWNER_NAME = "rowner";
+const char * OIC_JSON_PRM_NAME = "prm";
+const char * OIC_JSON_SPM_NAME = "spm";
+const char * OIC_JSON_PDEVICE_ID_NAME = "pdeviceuuid";
+const char * OIC_JSON_RLIST_NAME = "rlist";
+const char * OIC_JSON_HREF_NAME = OC_RSRVD_HREF;
+const char * OIC_JSON_REL_NAME = OC_RSRVD_REL;
+const char * OIC_JSON_RT_NAME = OC_RSRVD_RESOURCE_TYPE;
+const char * OIC_JSON_IF_NAME = OC_RSRVD_INTERFACE;
+const char * OIC_JSON_ROWNERID_NAME = "rowneruuid";
+#ifdef MULTIPLE_OWNER
+const char * OIC_JSON_EOWNERID_NAME = "x.org.iotivity.eowneruuid";
+#endif //MULTIPLE_OWNER
+const char * OIC_JSON_ENCODING_NAME = "encoding";
+const char * OIC_JSON_DATA_NAME = "data";
+const char * OIC_JSON_SEC_V_NAME = "secv";
+
+const char * OIC_JSON_EMPTY_STRING = "";
+
+// Certificates provided by Cloud
+const char * TRUST_CA = "trust_ca";
+const char * PRIMARY_CERT = "primary_cert";
+
+// Certificates provided by manufacturer
+const char * MF_TRUST_CA = "mfg_trust_ca";
+const char * MF_PRIMARY_CERT = "mfg_primary_cert";