An efficient and secure group key management scheme supporting frequent key updates on Pay-TV systems

Keyphrases

• Broadcast Channel 14%
• Ciphertext 28%
• Communication Cost 14%
• Decrypt 28%
• Decryption 14%
• Decryption Key 14%
• Delay Time 14%
• Distinctive Features 14%
• Group Key 85%
• Group Key Management 100%
• Hash Value 14%
• Key Management Scheme 100%
• Key Update 100%
• Number of Groups 14%
• Pay TV 100%
• Pay-per-view 14%
• Popular 14%
• Program Services 14%
• Rekeying 14%
• Secret Key 14%
• Subscription 14%
• Television Programs 28%
• Television Service 14%
• Token 14%
• Tree-based 28%
• Unauthorized Access 14%
• Update Frequency 14%

Computer Science

• Broadcast Channel 16%
• Ciphertext 33%
• Communication Cost 16%
• Decryption 33%
• group key 100%
• group key management 100%
• Key Management Scheme 100%
• time-delay 16%
• Unauthorized Access 16%