An efficient protocol for anonymous fingerprinting

Minoru Kuribayashi, Hatsukazu Tanaka

Research output: Contribution to journalArticlepeer-review


We propose a new anonymous fingerprinting scheme using Okamoto-Uchiyama cryptosystem[1]. In the previous schemes[2]-[4] Pfitzmann et al. applies bit commitment schemes, but they are not practical as the enciphering rate is extremely low. In order to improve the rate, we have applied the Okamoto-Uchiyama cryptosystem which homomorphic property makes it possible to embed an encrypted fingerprint in an encrypted digital contents. Exploiting the property ingenuously, we can achieve the same enciphering rate as that of Okamoto-Uchiyama cryptosystem in theory. The security can also be protected for both of a buyer and a merchant in our scheme.

Original languageEnglish
Pages (from-to)25-39
Number of pages15
JournalMemoirs of the Faculty of Engineering, Kobe University
Publication statusPublished - Nov 2002
Externally publishedYes

ASJC Scopus subject areas

  • General Engineering


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