Fingerprinting protocol based on distributed providers using oblivious transfer

Urara Shinmyo, Minoru Kuribayashi, Masakatu Morii, Hatsukazu Tanaka

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)


For the construction of a large fingerprinting system, conventional protocols need many computations to provide each fingerprinted contents to each user. In order to reduce the computational cost, we introduce a new concept of distributed providers in the fingerprinting protocol. Before a sale, our practical fingerprinting protocol using a concept of secure oblivious transfer is performed between a contents supplier and each provider. Then each provider obtains fingerprinted contents such that each bit of fingerprinting information is embedded in each segment of the contents. When a user orders some contents to the supplier, each segment of the contents is distributed from each provider specified by the supplier. The selection of providers who distribute the segments of contents is executed based on the user's identity so that the sequence of embedded bits in the collected segments may indicate the user's identity.

Original languageEnglish
Pages (from-to)2597-2602
Number of pages6
JournalIEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences
Issue number10
Publication statusPublished - Oct 2006
Externally publishedYes


  • Distributed providers
  • Fingerprinting
  • Oblivious transfer

ASJC Scopus subject areas

  • Signal Processing
  • Computer Graphics and Computer-Aided Design
  • Electrical and Electronic Engineering
  • Applied Mathematics


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