IEICE TRANSACTIONS on Fundamentals
Traitor Tracing Scheme Secure against Adaptive Key Exposure and its Application to Anywhere TV Service
Summary :
Copyright protection is a major issue in distributing content on Internet or broadcasting service. One well-known method of protecting copyright is a traitor tracing scheme. With this scheme, if a pirate decoder is made, the content provider can check the secret key contained in it and trace the authorized user/subscriber (traitor). Furthermore, users require that they could obtain services anywhere they want (Anywhere TV). For this purpose, they would need to take along their secret keys and therefore key exposure has to be kept in mind. As one of countermeasures against key exposure, a forward secure public key cryptosystem has been developed. In this system, the user secret key remains valid for a limited period of time. It means that even if it is exposed, the user would be affected only for the limited time period. In this paper, we propose a traitor tracing scheme secure against adaptive key exposure (TTaKE) which contains the properties of both a traitor tracing scheme and a forward secure public key cryptosystem. It is constructed by using two polynomials with two variables to generate user secret keys. Its security proof is constructed from scratch. Moreover we confirmed its efficiency through comparisons. Finally, we show the way how its building blocks can be applied to anywhere TV service. Its structure fits current broadcasting systems.
- Publication
- IEICE TRANSACTIONS on Fundamentals Vol.E90-A No.5 pp.1000-1011
- Publication Date
- 2007/05/01
- Publicized
- Online ISSN
- 1745-1337
- DOI
- 10.1093/ietfec/e90-a.5.1000
- Type of Manuscript
- Special Section PAPER (Special Section on Discrete Mathematics and Its Applications)
- Category
Authors
Keyword
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Kazuto OGAWA, Goichiro HANAOKA, Hideki IMAI, "Traitor Tracing Scheme Secure against Adaptive Key Exposure and its Application to Anywhere TV Service" in IEICE TRANSACTIONS on Fundamentals,
vol. E90-A, no. 5, pp. 1000-1011, May 2007, doi: 10.1093/ietfec/e90-a.5.1000.
Abstract: Copyright protection is a major issue in distributing content on Internet or broadcasting service. One well-known method of protecting copyright is a traitor tracing scheme. With this scheme, if a pirate decoder is made, the content provider can check the secret key contained in it and trace the authorized user/subscriber (traitor). Furthermore, users require that they could obtain services anywhere they want (Anywhere TV). For this purpose, they would need to take along their secret keys and therefore key exposure has to be kept in mind. As one of countermeasures against key exposure, a forward secure public key cryptosystem has been developed. In this system, the user secret key remains valid for a limited period of time. It means that even if it is exposed, the user would be affected only for the limited time period. In this paper, we propose a traitor tracing scheme secure against adaptive key exposure (TTaKE) which contains the properties of both a traitor tracing scheme and a forward secure public key cryptosystem. It is constructed by using two polynomials with two variables to generate user secret keys. Its security proof is constructed from scratch. Moreover we confirmed its efficiency through comparisons. Finally, we show the way how its building blocks can be applied to anywhere TV service. Its structure fits current broadcasting systems.
URL: https://global.ieice.org/en_transactions/fundamentals/10.1093/ietfec/e90-a.5.1000/_p
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@ARTICLE{e90-a_5_1000,
author={Kazuto OGAWA, Goichiro HANAOKA, Hideki IMAI, },
journal={IEICE TRANSACTIONS on Fundamentals},
title={Traitor Tracing Scheme Secure against Adaptive Key Exposure and its Application to Anywhere TV Service},
year={2007},
volume={E90-A},
number={5},
pages={1000-1011},
abstract={Copyright protection is a major issue in distributing content on Internet or broadcasting service. One well-known method of protecting copyright is a traitor tracing scheme. With this scheme, if a pirate decoder is made, the content provider can check the secret key contained in it and trace the authorized user/subscriber (traitor). Furthermore, users require that they could obtain services anywhere they want (Anywhere TV). For this purpose, they would need to take along their secret keys and therefore key exposure has to be kept in mind. As one of countermeasures against key exposure, a forward secure public key cryptosystem has been developed. In this system, the user secret key remains valid for a limited period of time. It means that even if it is exposed, the user would be affected only for the limited time period. In this paper, we propose a traitor tracing scheme secure against adaptive key exposure (TTaKE) which contains the properties of both a traitor tracing scheme and a forward secure public key cryptosystem. It is constructed by using two polynomials with two variables to generate user secret keys. Its security proof is constructed from scratch. Moreover we confirmed its efficiency through comparisons. Finally, we show the way how its building blocks can be applied to anywhere TV service. Its structure fits current broadcasting systems.},
keywords={},
doi={10.1093/ietfec/e90-a.5.1000},
ISSN={1745-1337},
month={May},}
Copy
TY - JOUR
TI - Traitor Tracing Scheme Secure against Adaptive Key Exposure and its Application to Anywhere TV Service
T2 - IEICE TRANSACTIONS on Fundamentals
SP - 1000
EP - 1011
AU - Kazuto OGAWA
AU - Goichiro HANAOKA
AU - Hideki IMAI
PY - 2007
DO - 10.1093/ietfec/e90-a.5.1000
JO - IEICE TRANSACTIONS on Fundamentals
SN - 1745-1337
VL - E90-A
IS - 5
JA - IEICE TRANSACTIONS on Fundamentals
Y1 - May 2007
AB - Copyright protection is a major issue in distributing content on Internet or broadcasting service. One well-known method of protecting copyright is a traitor tracing scheme. With this scheme, if a pirate decoder is made, the content provider can check the secret key contained in it and trace the authorized user/subscriber (traitor). Furthermore, users require that they could obtain services anywhere they want (Anywhere TV). For this purpose, they would need to take along their secret keys and therefore key exposure has to be kept in mind. As one of countermeasures against key exposure, a forward secure public key cryptosystem has been developed. In this system, the user secret key remains valid for a limited period of time. It means that even if it is exposed, the user would be affected only for the limited time period. In this paper, we propose a traitor tracing scheme secure against adaptive key exposure (TTaKE) which contains the properties of both a traitor tracing scheme and a forward secure public key cryptosystem. It is constructed by using two polynomials with two variables to generate user secret keys. Its security proof is constructed from scratch. Moreover we confirmed its efficiency through comparisons. Finally, we show the way how its building blocks can be applied to anywhere TV service. Its structure fits current broadcasting systems.
ER -
English
