The present disclosure relates to a method of transmitting control information for identifying a user in a wireless communication system, and a method, performed by a transmitting device, of transmitting control information includes: adding cyclic redundancy check (CRC) bits to the control information; masking some of the CRC bits with at least one of an identifier of a receiving user equipment (UE) or an identifier of the transmitting device; and transmitting the control information to the receiving UE, wherein the control information includes downlink control information (DCI) or sidelink control information (SCI).