Does It Need Trusted Third Party Design of
Buyer-Seller Watermarking Protocol without
Trusted Third Party 1st edition by Jae Gwi Choi,
Kouichi Sakurai, Ji Hwan Park ISBN 3540202080
9783540202080 pdf download
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design-of-buyer-seller-watermarking-protocol-without-trusted-
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park-isbn-3540202080-9783540202080-8850/
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, Does It Need Trusted Third Party? Design of
Buyer-Seller Watermarking Protocol without Trusted
Third Party*
Jae-Gwi Choi1, Kouichi Sakurai2, and Ji-Hwan Park1
1 Department of Information Security, Pukyong National Univ. 599-1 Daeyeon-dong
Nam-ku Busan, Korea
MDH#PDLOSNQXDFNUMSDUN#SNQXDFNU
2 Faculty of Information Science and Electrical Engineering, Kyushu Univ. 6-10-1 Hakozaki
Higashi-ku Fukuoka, Japan
VDNXUDL#FVFHN\XVKXXDFMS
Abstract. Buyer-seller watermarking protocol is a combination of traditional
watermarking and fingerprinting techniques. For example, in applications
where multimedia content is electronically distributed over a network, the con-
tent owner can embed a distinct watermark (a fingerprint), in each copy of the
data that is distributed. If unauthorized copies of the data are found, then the
origin of the copy can be determined by retrieving the unique watermark corre-
sponding to each buyer. Recently, Ju and Kim proposed an anonymous buyer-
seller watermarking protocol, where a buyer can purchase contents anony-
mously, but the anonymity can be controlled. They used two trusted parties: the
watermark certification authority and the judge. The significance of this proto-
col is that it offered anonymity to watermarking protocol. But this protocol has
the problem that honest buyers can be found as guilty, because sellers can rec-
reate the same contents as the buyer’s one if he/she colludes with the watermark
certification authority and the judge. Thus this scheme must assume existence
of the trusted third parties for its security. In this paper, we show shortcomings
of this protocol and suggest a buyer-seller watermarking protocol that provides
security of buyers and sellers without trusted third party.
1 Introduction
The current rapid development of new Information Technology and electronic com-
merce has resulted in a strong demand for reliable and secure copyright protection
techniques for multimedia data. Over the past few decades, a considerable number of
studies have been conducted on the design of methods that technically support the
copyright protection of digital data. Copyright marking schemes have been proposed
as the important class of these techniques. They are the embedding of marks into
digital contents that can later be detected to identify owners (watermarking) or recipi-
* The first and third authors were partly supported by grant No.01-2002-000-00589-0 from the
Basic Research Program of the Korea Science & Engineering Foundation and by University
IT Research Center Project, MIC, Korea. It was done while the first author visits in Kyushu
Univ. with the support of Association of International Education, Japan.
J. Zhou, M. Yung, Y. Han (Eds.): ACNS 2003, LNCS 2846, pp. 265–279, 2003.
© Springer-Verlag Berlin Heidelberg 2003
Buyer-Seller Watermarking Protocol without
Trusted Third Party 1st edition by Jae Gwi Choi,
Kouichi Sakurai, Ji Hwan Park ISBN 3540202080
9783540202080 pdf download
https://ebookball.com/product/does-it-need-trusted-third-party-
design-of-buyer-seller-watermarking-protocol-without-trusted-
third-party-1st-edition-by-jae-gwi-choi-kouichi-sakurai-ji-hwan-
park-isbn-3540202080-9783540202080-8850/
Explore and download more ebooks or textbooks
at ebookball.com
, Get Your Digital Files Instantly: PDF, ePub, MOBI and More
Quick Digital Downloads: PDF, ePub, MOBI and Other Formats
Science of Cyber Security SciSec 2022 Workshops 1st edition by Kouichi
Sakurai,Chunhua Su 9811977682 9789811977688
https://ebookball.com/product/science-of-cyber-security-
scisec-2022-workshops-1st-edition-by-kouichi-sakurai-chunhua-
su-9811977682-9789811977688-25744/
Making the Key Agreement Protocol in Mobile ad hoc Network More
Efficient 1st edition by Gang Yao, Kui Ren, Feng Bao, Robert Deng,
Dengguo Feng ISBN 3540202080 9783540202080
https://ebookball.com/product/making-the-key-agreement-protocol-
in-mobile-ad-hoc-network-more-efficient-1st-edition-by-gang-yao-
kui-ren-feng-bao-robert-deng-dengguo-feng-
isbn-3540202080-9783540202080-10110/
LNCS 2748 Multi party Pseudo Telepathy 1st Edition by Gilles
Brassard, Anne Broadbent, Alain Tapp ISBN 3540450785 9783540450788
https://ebookball.com/product/lncs-2748-multi-party-pseudo-
telepathy-1st-edition-by-gilles-brassard-anne-broadbent-alain-
tapp-isbn-3540450785-9783540450788-9908/
Copywriting Successful writing for design advertising and marketing
Third Edition by Gyles Lingwood, Mark Shaw 9781529420258 1529420253
https://ebookball.com/product/copywriting-successful-writing-for-
design-advertising-and-marketing-third-edition-by-gyles-lingwood-
mark-shaw-9781529420258-1529420253-21420/
,Principles of Solar Engineering Third Edition by Yogi Goswami
1466563788 9781466563780
https://ebookball.com/product/principles-of-solar-engineering-
third-edition-by-yogi-goswami-1466563788-9781466563780-18642/
Political Agendas for Education From the Religious Right To the Green
Party 2nd Edition by Joel Spring ISBN 0805839844 9780805839845
https://ebookball.com/product/political-agendas-for-education-
from-the-religious-right-to-the-green-party-2nd-edition-by-joel-
spring-isbn-0805839844-9780805839845-23518/
Efficient Distributed Signcryption Scheme as Group Signcryption 1st
edition by DongJin Kwak, SangJae Moon ISBN 3540202080 9783540202080
https://ebookball.com/product/efficient-distributed-signcryption-
scheme-as-group-signcryption-1st-edition-by-dongjin-kwak-sangjae-
moon-isbn-3540202080-9783540202080-11014/
Temporary Anchorage Devices in Clinical Orthodontics 1st edition by
Jae Hyun Park 9781119513629 1119513626
https://ebookball.com/product/temporary-anchorage-devices-in-
clinical-orthodontics-1st-edition-by-jae-hyun-
park-9781119513629-1119513626-5378/
Common Vulnerability Markup Language 1st edition by Haitao Tian,
Liusheng Huang, Zhi Zhou, Hui Zhang ISBN 3540202080 9783540202080
https://ebookball.com/product/common-vulnerability-markup-
language-1st-edition-by-haitao-tian-liusheng-huang-zhi-zhou-hui-
zhang-isbn-3540202080-9783540202080-9602/
, Does It Need Trusted Third Party? Design of
Buyer-Seller Watermarking Protocol without Trusted
Third Party*
Jae-Gwi Choi1, Kouichi Sakurai2, and Ji-Hwan Park1
1 Department of Information Security, Pukyong National Univ. 599-1 Daeyeon-dong
Nam-ku Busan, Korea
MDH#PDLOSNQXDFNUMSDUN#SNQXDFNU
2 Faculty of Information Science and Electrical Engineering, Kyushu Univ. 6-10-1 Hakozaki
Higashi-ku Fukuoka, Japan
VDNXUDL#FVFHN\XVKXXDFMS
Abstract. Buyer-seller watermarking protocol is a combination of traditional
watermarking and fingerprinting techniques. For example, in applications
where multimedia content is electronically distributed over a network, the con-
tent owner can embed a distinct watermark (a fingerprint), in each copy of the
data that is distributed. If unauthorized copies of the data are found, then the
origin of the copy can be determined by retrieving the unique watermark corre-
sponding to each buyer. Recently, Ju and Kim proposed an anonymous buyer-
seller watermarking protocol, where a buyer can purchase contents anony-
mously, but the anonymity can be controlled. They used two trusted parties: the
watermark certification authority and the judge. The significance of this proto-
col is that it offered anonymity to watermarking protocol. But this protocol has
the problem that honest buyers can be found as guilty, because sellers can rec-
reate the same contents as the buyer’s one if he/she colludes with the watermark
certification authority and the judge. Thus this scheme must assume existence
of the trusted third parties for its security. In this paper, we show shortcomings
of this protocol and suggest a buyer-seller watermarking protocol that provides
security of buyers and sellers without trusted third party.
1 Introduction
The current rapid development of new Information Technology and electronic com-
merce has resulted in a strong demand for reliable and secure copyright protection
techniques for multimedia data. Over the past few decades, a considerable number of
studies have been conducted on the design of methods that technically support the
copyright protection of digital data. Copyright marking schemes have been proposed
as the important class of these techniques. They are the embedding of marks into
digital contents that can later be detected to identify owners (watermarking) or recipi-
* The first and third authors were partly supported by grant No.01-2002-000-00589-0 from the
Basic Research Program of the Korea Science & Engineering Foundation and by University
IT Research Center Project, MIC, Korea. It was done while the first author visits in Kyushu
Univ. with the support of Association of International Education, Japan.
J. Zhou, M. Yung, Y. Han (Eds.): ACNS 2003, LNCS 2846, pp. 265–279, 2003.
© Springer-Verlag Berlin Heidelberg 2003
