CRYPTO '93 Proceedings of the 13th annual international cryptology conference on Advances in cryptology
Asymmetric fingerprinting for larger collusions
Proceedings of the 4th ACM conference on Computer and communications security
Key management for encrypted broadcast
CCS '98 Proceedings of the 5th ACM conference on Computer and communications security
Combinatorial Properties and Constructions of Traceability Schemes and Frameproof Codes
SIAM Journal on Discrete Mathematics
Oblivious transfer and polynomial evaluation
STOC '99 Proceedings of the thirty-first annual ACM symposium on Theory of computing
An Efficient Public Key Traitor Tracing Scheme
CRYPTO '99 Proceedings of the 19th Annual International Cryptology Conference on Advances in Cryptology
CRYPTO '94 Proceedings of the 14th Annual International Cryptology Conference on Advances in Cryptology
CRYPTO '98 Proceedings of the 18th Annual International Cryptology Conference on Advances in Cryptology
A Practical Public Key Cryptosystem Provably Secure Against Adaptive Chosen Ciphertext Attack
CRYPTO '98 Proceedings of the 18th Annual International Cryptology Conference on Advances in Cryptology
Traitor Tracing with Constant Transmission Rate
EUROCRYPT '02 Proceedings of the International Conference on the Theory and Applications of Cryptographic Techniques: Advances in Cryptology
Oblivious Polynomial Evaluation and Oblivious Neural Learning
ASIACRYPT '01 Proceedings of the 7th International Conference on the Theory and Application of Cryptology and Information Security: Advances in Cryptology
Towards Making Broadcast Encryption Practical
FC '99 Proceedings of the Third International Conference on Financial Cryptography
Proceedings of the First International Workshop on Information Hiding
A Public-Key Traitor Tracing Scheme with Revocation Using Dynamic Shares
PKC '01 Proceedings of the 4th International Workshop on Practice and Theory in Public Key Cryptography: Public Key Cryptography
Efficient Asymmetric Self-Enforcement Scheme with Public Traceability
PKC '01 Proceedings of the 4th International Workshop on Practice and Theory in Public Key Cryptography: Public Key Cryptography
Public Key Trace and Revoke Scheme Secure against Adaptive Chosen Ciphertext Attack
PKC '03 Proceedings of the 6th International Workshop on Theory and Practice in Public Key Cryptography: Public Key Cryptography
Efficient Asymmetric Public-Key Traitor Tracing without Trusted Agents
CT-RSA 2001 Proceedings of the 2001 Conference on Topics in Cryptology: The Cryptographer's Track at RSA
Efficient Methods for Integrating Traceability and Broadcast Encryption
CRYPTO '99 Proceedings of the 19th Annual International Cryptology Conference on Advances in Cryptology
Robust and Secure Broadcasting
INDOCRYPT '01 Proceedings of the Second International Conference on Cryptology in India: Progress in Cryptology
An efficient threshold public key cryptosystem secure against adaptive chosen ciphertext attack
EUROCRYPT'99 Proceedings of the 17th international conference on Theory and application of cryptographic techniques
ACISP'03 Proceedings of the 8th Australasian conference on Information security and privacy
Collusion-secure fingerprinting for digital data
IEEE Transactions on Information Theory
Secure and scalable communication in vehicle ad hoc networks
EUROCAST'07 Proceedings of the 11th international conference on Computer aided systems theory
Coalition resistant anonymous broadcast encryption scheme based on PUF
TRUST'11 Proceedings of the 4th international conference on Trust and trustworthy computing
A revocation scheme preserving privacy
Inscrypt'06 Proceedings of the Second SKLOIS conference on Information Security and Cryptology
Anonymous distribution of encryption keys in cellular broadcast systems
MADNES'05 Proceedings of the First international conference on Secure Mobile Ad-hoc Networks and Sensors
A variant of non-adaptive group testing and its application in pay-television via internet
ICT-EurAsia'13 Proceedings of the 2013 international conference on Information and Communication Technology
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A Pay-TV scheme broadcasts a set of services or streams instead of one. That is, a pay-TV scheme is a specific application of a broadcast encryption scheme in which the secret to be broadcast is associated with a number of services. For example, a pay-TV broadcaster offers various channels such as a sports channel, a movie channel, and so on. A traitor tracing scheme is a variant of a broadcast encryption scheme, so can be applied to construct a pay-TV scheme. However, because most known traitor tracing schemes deal with the broadcast of a single stream, a direct extension to multiple streams is too inefficient, i.e., direct extension to an m-stream case would involve an m-fold increase in the user's secret keys. In other words, if the number of streams to be sent increases, the number of secret keys each user must store in a secure memory also linearly increases. Therefore, we require a specific traitor tracing scheme which can be efficiently applied to a pay-TV scheme. We propose a new traitor tracing scheme for multiple channels and its application to a pay-TV scheme. The number of secret keys each user must store in a secure memory is just one regardless of the number of channels and it cannot be changed. Our scheme has a revocation property, i.e., we can revoke some users without redistributing a new secret key to other un-revoked users. Our scheme also provides a so called holding property – we can revoke some users and un-revoke them without redistribution of new keys after some period. This is very useful in a pay-TV scheme since a user may wish to un-subscribe from a channel for some periods and re-subscribe again later. Moreover, our pay-TV scheme is based on a public key traitor tracing scheme. Therefore, any content provider can send encrypted data to users with the public key the system manager provides. Our scheme can also be extended to provide asymmetric property and be secure against the adaptive chosen ciphertext attack.