Research Article

An Efficient Anonymous Authentication Scheme for Mobile Pay-TV Systems

Table 2

Notations of entities and parameters.

EntitiesDescriptionParametersDescription

HESHead end systemSThe server
MSMobile setUThe user
SASSubscriber authorization systemIDIdentity of the user
SMSSubscriber management systemPWPassword of the user
CWControl wordbRandom number
CASConditional access systemTTimestamp
ECMEntitlement control messageSpecified maximum time difference
EMMEntitlement management messageNUser registeration number
DBSData base serverToken for issue phase
MUXMultiplexerToken for subscription phase
DEMUXDemultiplexerToken for hand-off phase
TXTransmitterh( )One-way hash function
RXReceiving modulexSecret key of DBS
DVBDigital video broadcastThe adversary