+OCStackResult OCBindResourceInsToResource(OCResourceHandle handle, int64_t ins);
+
+/**
+ * This function gets the resource unique id for a resource.
+ *
+ * @param handle Handle of resource.
+ * @param ins Unique ID for resource.
+ *
+ * @return Ins if resource found or 0 resource not found.
+ */
+OCStackResult OCGetResourceIns(OCResourceHandle handle, int64_t *ins);
+
+#endif
+
+/**
+* This function gets a resource handle by resource uri.
+*
+* @param uri Uri of Resource to get Resource handle.
+*
+* @return Found resource handle or NULL if not found.
+*/
+OCResourceHandle OCGetResourceHandleAtUri(const char *uri);
+
+
+#ifdef RD_SERVER
+/**
+* Search the RD database for queries.
+*
+* @param interfaceType is the interface type that is queried.
+* @param resourceType is the resource type that is queried.
+* @param discPayload is NULL if no resource found or else OCDiscoveryPayload with the details
+* about the resource.
+*
+* @return ::OC_STACK_OK in case of success or else other value.
+*/
+OCStackResult OCRDDatabaseCheckResources(const char *interfaceType, const char *resourceType,
+ OCDiscoveryPayload *discPayload);
+#endif
+//#endif // DIRECT_PAIRING
+
+/**
+ * Add a header option to the given header option array.
+ *
+ * @param ocHdrOpt Pointer to existing options.
+ * @param numOptions Number of existing options.
+ * @param optionID COAP option ID.
+ * @param optionData Option data value.
+ * @param optionDataLength Size of Option data value.
+ *
+ * @return ::OC_STACK_OK on success and other value otherwise.
+ */
+OCStackResult
+OCSetHeaderOption(OCHeaderOption* ocHdrOpt,
+ size_t* numOptions,
+ uint16_t optionID,
+ void* optionData,
+ size_t optionDataLength);
+
+/**
+ * Get data value of the option with specified option ID from given header option array.
+ *
+ * @param ocHdrOpt Pointer to existing options.
+ * @param numOptions Number of existing options.
+ * @param optionID COAP option ID.
+ * @param optionData Pointer to option data.
+ * @param optionDataLength Size of option data value.
+ * @param receivedDatalLength Pointer to the actual length of received data.
+ *
+ * @return ::OC_STACK_OK on success and other value otherwise.
+ */
+OCStackResult
+OCGetHeaderOption(OCHeaderOption* ocHdrOpt,
+ size_t numOptions,
+ uint16_t optionID,
+ void* optionData,
+ size_t optionDataLength,
+ uint16_t* receivedDatalLength);
+
+/**
+ * gets the deviceId of the client
+ *
+ * @param deviceId pointer.
+ * @return Returns ::OC_STACK_OK if success.
+ */
+OCStackResult OCGetDeviceId(OCUUIdentity *deviceId);
+
+/**
+ * sets the deviceId of the client
+ *
+ * @param deviceId pointer.
+ * @return Returns ::OC_STACK_OK if success.
+ */
+OCStackResult OCSetDeviceId(const OCUUIdentity *deviceId);
+
+ /**
+ * Gets the bool state of "isOwned" property on the doxm resource.
+ *
+ * @param isOwned a pointer to be assigned to isOwned property
+ * @return Returns ::OC_STACK_OK if success.
+ */
+OCStackResult OCGetDeviceOwnedState(bool *isOwned);
+
+/**
+ * Encode an address string to match RFC 6874.
+ *
+ * @param outputAddress a char array to be written with the encoded string.
+ *
+ * @param outputSize size of outputAddress buffer.
+ *
+ * @param inputAddress a char array of size <= CA_MAX_URI_LENGTH
+ * containing a valid IPv6 address string.
+ *
+ * @return ::OC_STACK_OK on success and other value otherwise.
+ */
+OCStackResult OCEncodeAddressForRFC6874(char* outputAddress,
+ size_t outputSize,
+ const char* inputAddress);
+
+/**
+ * Decode an address string according to RFC 6874.
+ *
+ * @param outputAddress a char array to be written with the decoded string.
+ *
+ * @param outputSize size of outputAddress buffer.
+ *
+ * @param inputAddress a valid percent-encoded address string.
+ *
+ * @param end NULL if the entire entire inputAddress is a null-terminated percent-
+ * encoded address string. Otherwise, a pointer to the first byte that
+ * is not part of the address string (e.g., ']' in a URI).
+ *
+ * @return ::OC_STACK_OK on success and other value otherwise.
+ */
+OCStackResult OCDecodeAddressForRFC6874(char* outputAddress,
+ size_t outputSize,
+ const char* inputAddress,
+ const char* end);
+
+/**
+ * Set the value of /oic/d and /oic/p properties. This function is a generic function that sets for
+ * all OCF defined properties.
+ *
+ * @param type the payload type for device and platform as defined in @ref OCPayloadType.
+ * @param propName the pre-defined property as per OCF spec.
+ * @param value the value of the property to be set.
+ *
+ * @return ::OC_STACK_OK on success and other value otherwise.
+ */
+OCStackResult OCSetPropertyValue(OCPayloadType type, const char *propName, const void *value);
+
+/**
+ * Get the value of /oic/d and /oic/p properties. This function is a generic function that get value
+ * for all OCF defined properties.
+ *
+ * @param type the payload type for device and platform as defined in @ref OCPayloadType.
+ * @param propName the pre-defined as per OCF spec.
+ * @param value this holds the return value. In case of error will be set to NULL.
+ *
+ * @return ::OC_STACK_OK on success and other value otherwise.
+ */
+OCStackResult OCGetPropertyValue(OCPayloadType type, const char *propName, void **value);
+
+/**
+* Delete client callback info all.
+*/
+void OCClearCallBackList();
+
+/**
+ * Delete observer info all.
+ */
+void OCClearObserverlist();
+
+/**
+ * API to encrypt the un-encrypted DB file before OCRegisterPersistentStorageHandler
+ * If the API is successful, un-encrypted file will be removed, and if the encrypted file
+ * is currupted, then it restores encrypted file using rescue file.
+ *
+ * @param[in] key key used for encryption
+ * @param[in] psPlain OCPersistentStorage for the plain DB
+ * @param[in] psEnc OCPersistentStorage for the encrypted DB
+ * @param[in] psRescue OCPersistentStorage for the rescue DB
+ *
+ * @return ::OC_STACK_OK on success and other value otherwise.
+ */
+OCStackResult OCSetSecurePSI(const unsigned char *key, const OCPersistentStorage *psPlain,
+ const OCPersistentStorage *psEnc, const OCPersistentStorage *psRescue);
+
+/**
+ * Generic Encryption function to encrypt data buffer in pt
+ * and update in ct and len in ct_len. (AES-CBC-HMAC)
+ *
+ * @param[in] pt plaintext to be encrypted
+ * @param[in] pt_len length of plaintext
+ * @param[out] ct ciphered text
+ * @param[out] ct_len is length of the ciphered text.
+ *
+ * @return ::0 for Success.
+ */
+int OCEncrypt(const unsigned char *pt, size_t pt_len,
+ unsigned char **ct, size_t *ct_len);
+
+/**
+ * Generic Decryption fucntion to decrypt data buffer in ct
+ * and update in pt and len in pt_len. (AES-CBC-HMAC)
+ *
+ * @param[in] ct ciphered to be decrypted
+ * @param[in] ct_len length of cipher text
+ * @param[out] pt plaintext text
+ * @param[out] pt_len is length of the palintext text.
+ *
+ * @return ::0 for Success.
+ */
+int OCDecrypt(const unsigned char *ct, size_t ct_len,
+ unsigned char **pt, size_t *pt_len);
+
+/**
+ * API to set key to psi
+ *
+ * @param[in] key key used for encryption
+ * @return ::OC_STACK_OK for Success, otherwise some error value.
+ */
+OCStackResult OCSetKey(const unsigned char* key);
+
+/**
+ * API to get key from psi
+ *
+ * @param[out] key key used for encryption
+ * @return ::OC_STACK_OK for Success, otherwise some error value.
+ */
+OCStackResult OCGetKey(unsigned char* key);
+
+/**
+ * API to register OTM event handler
+ *
+ * @param[in] ctx user context returned in the callback
+ * @param[in] cb callback function to receive the OTM event on server side
+ * @return ::OC_STACK_OK for Success, otherwise some error value.
+ */
+OCStackResult OCSetOtmEventHandler(void *ctx, OCOtmEventHandler cb);