How to withstand mobile virus attacks (extended abstract)
PODC '91 Proceedings of the tenth annual ACM symposium on Principles of distributed computing
CRYPTO '93 Proceedings of the 13th annual international cryptology conference on Advances in cryptology
Global, unpredictable bit generation without broadcast
EUROCRYPT '93 Workshop on the theory and application of cryptographic techniques on Advances in cryptology
Generalized Beimal-Chor schemes for broadcast encryption and interactive key distribution
Theoretical Computer Science
Key management for restricted multicast using broadcast encryption
IEEE/ACM Transactions on Networking (TON)
An Efficient Public Key Traitor Tracing Scheme
CRYPTO '99 Proceedings of the 19th Annual International Cryptology Conference on Advances in Cryptology
Long-Lived Broadcast Encryption
CRYPTO '00 Proceedings of the 20th Annual International Cryptology Conference on Advances in Cryptology
The LSD Broadcast Encryption Scheme
CRYPTO '02 Proceedings of the 22nd Annual International Cryptology Conference on Advances in Cryptology
Proactive Secret Sharing Or: How to Cope With Perpetual Leakage
CRYPTO '95 Proceedings of the 15th Annual International Cryptology Conference on Advances in Cryptology
CRYPTO '96 Proceedings of the 16th Annual International Cryptology Conference on Advances in Cryptology
ACISP'03 Proceedings of the 8th Australasian conference on Information security and privacy
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Broadcast encryption has been applied to transmit digital information such as multimedia, software and paid TV programs on the open networks. One of key factors in the broadcast encryption is that only previously authorized users can access the digital information. If the broadcast message is sent, first of all, the privileged users will decode the session key by using his or her personal key, which the user got previously. The user will get the digital information through this session key. As shown above, the user will obtain messages or session keys using the keys transmitted from a broadcaster, which process requires effective ways for the broadcaster to generate and distribute keys. In addition, when a user wants to withdraw or sign up, an effective process to renew a key is required. It is also necessary to chase and check users’ malicious activities or attacking others. This paper presents a method called Traitor Tracing to solve all these problems. Traitor tracing can check attackers and trace them. It also utilizes a proactive scheme for each user to have effective and intelligence renewal cycle to generate keys.