DECIDE: a scheme for decentralized identity escrow

Authors:
Noburou Taniguchi;Koji Chida;Osamu Shionoiri;Atsushi Kanai
Affiliations:
Nippon Telegraph and Telephone Corporation, Kanagawa, Japan;Nippon Telegraph and Telephone Corporation, Kanagawa, Japan;Nippon Telegraph and Telephone Corporation, Kanagawa, Japan;Nippon Telegraph and Telephone Corporation, Kanagawa, Japan
Venue:
Proceedings of the 2005 workshop on Digital identity management
Year:
2005

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Abstract

Anonymity is one of the most controversial issues related to the Internet. It greatly encourages misdeeds such as piracy, defamation, and fraud. However, anonymity is important to protect the privacy of individuals and to support the freedom of speech. Identity escrow is a potential solution to achieving a balance between anonymity and identity. The basic idea is to utilize a two-tiered identity: the first-tier identity carries the minimal amount of information for normal use, and the second-tier identity bears precise information regarding the individual to be disclosed when necessary. In this paper, we introduce a decentralized identity escrow scheme called DECIDE. It has three identity tiers: anonymity, pseudonymity, and identity, and it has a high decentralization capability. We also present an analysis on three service models - online discussion community, whistleblowing, school networking - to explore the public acceptance of the proposed scheme.