CRYPTO '93 Proceedings of the 13th annual international cryptology conference on Advances in cryptology
Secure group communications using key graphs
IEEE/ACM Transactions on Networking (TON)
Key management for restricted multicast using broadcast encryption
IEEE/ACM Transactions on Networking (TON)
Communications of the ACM
Cryptography: Theory and Practice
Cryptography: Theory and Practice
Light Weight Broadcast Exclusion Using Secret Sharing
ACISP '00 Proceedings of the 5th Australasian Conference on Information Security and Privacy
The LSD Broadcast Encryption Scheme
CRYPTO '02 Proceedings of the 22nd Annual International Cryptology Conference on Advances in Cryptology
A Quick Group Key Distribution Scheme with "Entity Revocation"
ASIACRYPT '99 Proceedings of the International Conference on the Theory and Applications of Cryptology and Information Security: Advances in Cryptology
Low Cost Attacks on Tamper Resistant Devices
Proceedings of the 5th International Workshop on Security Protocols
Efficient Trace and Revoke Schemes
FC '00 Proceedings of the 4th International Conference on Financial Cryptography
Key Establishment in Large Dynamic Groups Using One-Way Function Trees
IEEE Transactions on Software Engineering
Self-Healing Key Distribution with Revocation
SP '02 Proceedings of the 2002 IEEE Symposium on Security and Privacy
A Practical Revocation Scheme for Broadcast Encryption Using Smart Cards
SP '03 Proceedings of the 2003 IEEE Symposium on Security and Privacy
Practical Cryptography
Efficient self-healing group key distribution with revocation capability
Proceedings of the 10th ACM conference on Computer and communications security
A fully collusion resistant broadcast, trace, and revoke system
Proceedings of the 13th ACM conference on Computer and communications security
Collusion resistant broadcast encryption with short ciphertexts and private keys
CRYPTO'05 Proceedings of the 25th annual international conference on Advances in Cryptology
Fully collusion resistant traitor tracing with short ciphertexts and private keys
EUROCRYPT'06 Proceedings of the 24th annual international conference on The Theory and Applications of Cryptographic Techniques
IEEE Transactions on Information Theory
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Wireless broadcasting is an efficient way to broadcast data to a large number of users. Some commercial applications of wireless broadcasting, such as satellite pay-TV, desire that only those users who have paid for the service can retrieve broadcast data. This is often achieved by broadcast encryption, which allows a station securely to broadcast data to a dynamically changing set of privileged users through open air. Most existing broadcast encryption schemes can only revoke a pre-specified number of users before system re-setup or require high computation, communication and storage overheads in receivers. In this paper, we propose a new broadcast encryption scheme based on smart cards. In our scheme, smart cards are used to prevent users from leaking secret keys. Additionally, once an illegally cloned smart card is captured, our scheme also allows tracing of the compromised smart card by which illegal smart cards are cloned, and can then revoke all cloned smart cards. The new features of our scheme include minimal computation needs of only a few modular multiplications in the smart card, and the capability to revoke up to any number of users in one revocation. Furthermore, our scheme is secure against both passive and active attacks and has better performance than other schemes.