Broadcast transmitting system and broadcast receiving apparatus

A broadcasting transmitting system and a broadcasting receiving apparatus are provided to use a broadcasting bandwidth efficiently by providing an EMM(Entitlement Management Message) to the broadcasting receiving apparatus when the broadcasting transmitting system receives an EMM request from the broadcasting receiving apparatus. A broadcasting transmitting system(200) includes a scrambling engine(210), a control word encoder(240), a service multiplexer(220), an EMM generator(260), and a transmitter(270). The scrambling engine scrambles broadcasting data corresponding to a plurality of charged services through a plurality of control words corresponding to the charged services to generate scrambled data. The control word encoder respectively encodes the control words through a plurality of intermediate keys corresponding to the plurality of charged services to generate a plurality of encoded control words. The service multiplexer generates a broadcasting message including broadcasting data corresponding to a free service, the scrambled data and the encoded control words. The EMM generator encodes the intermediate keys with a secret key distributed to each subscriber to generate a plurality of encoded intermediate keys and generates an EMM message including at least one encoded intermediate key with respect to a charged service allowed to a broadcasting receiving apparatus. The transmitter provides the broadcasting message and the EMM message to the broadcasting receiving apparatus.