+ * @retval ::CA_STATUS_OK for success, otherwise some error value
+ */
+CAResult_t CADtlsSelectCipherSuite(const dtls_cipher_t cipher);
+
+/**
+ * Enable anonymous ECDH cipher suite for dtls handshake
+ *
+ * @param[in] enable TRUE/FALSE enables/disables anonymous cipher suite
+ *
+ * @retval ::CA_STATUS_OK for success, otherwise some error value
+ */
+CAResult_t CADtlsEnableAnonECDHCipherSuite(const bool enable);
+
+/**
+ * Initiate DTLS handshake with selected cipher suite
+ *
+ * @param[in] endpoint information of network address
+ *
+ * @retval ::CA_STATUS_OK for success, otherwise some error value
+ */
+CAResult_t CADtlsInitiateHandshake(const CAEndpoint_t *endpoint);
+
+/**
+ * Close the DTLS session
+ *
+ * @param[in] endpoint information of network address
+ *
+ * @retval ::CA_STATUS_OK for success, otherwise some error value
+ */
+CAResult_t CADtlsClose(const CAEndpoint_t *endpoint);
+
+/**
+ * Generate ownerPSK using PRF
+ * OwnerPSK = TLS-PRF('master key' , 'oic.sec.doxm.jw',
+ * 'ID of new device(Resource Server)',
+ * 'ID of owner smart-phone(Provisioning Server)')
+ *
+ * @param[in] endpoint information of network address
+ * @param[in] label Ownership transfer method e.g)"oic.sec.doxm.jw"
+ * @param[in] labelLen Byte length of label
+ * @param[in] rsrcServerDeviceID ID of new device(Resource Server)
+ * @param[in] rsrcServerDeviceIDLen Byte length of rsrcServerDeviceID
+ * @param[in] provServerDeviceID label of previous owner
+ * @param[in] provServerDeviceIDLen byte length of provServerDeviceID
+ * @param[in,out] ownerPSK Output buffer for owner PSK
+ * @param[in] ownerPSKSize Byte length of the ownerPSK to be generated
+ *
+ * @retval ::CA_STATUS_OK for success, otherwise some error value
+ */
+CAResult_t CADtlsGenerateOwnerPSK(const CAEndpoint_t *endpoint,
+ const uint8_t* label, const size_t labelLen,
+ const uint8_t* rsrcServerDeviceID, const size_t rsrcServerDeviceIDLen,
+ const uint8_t* provServerDeviceID, const size_t provServerDeviceIDLen,
+ uint8_t* ownerPSK, const size_t ownerPSKSize);
+;
+
+/**
+ * initialize tinyDTLS library and other necessary initialization.
+ *
+ * @return 0 on success otherwise a positive error value.
+ * @retval ::CA_STATUS_OK Successful.
+ * @retval ::CA_STATUS_INVALID_PARAM Invalid input arguments.
+ * @retval ::CA_STATUS_FAILED Operation failed.
+ *
+ */
+CAResult_t CAAdapterNetDtlsInit();
+
+/**
+ * de-inits tinyDTLS library and free the allocated memory.