A Flexible Method for Masked Sharing of Group Keys : Special Section on Cryptography and Information Security

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概要

• 論文の詳細を見る

• This paper proposes a group key distribution scheme with a user exclusion. The user exclusion is how to distribute an encryption key over a broadcast channel shared by n users so that all but d excluded users can get the group key. In the broadcast channel such as Pay-TV, Internet multicast and a mobile telecommunication for a group, a manager should exclude a dishonest user or an unauthorized terminal as soon as possible to protect the secrecy of the group communication. However, it takes a long for the user exclusion on a large group, if the distributor distributes the group key to each user except the excluded one. We propose a scheme in which the amount of transmission and the key storage of each user do not depend on the number of users of the group. Moreover, our scheme dose not require a fixed and privileged distributor.

• 社団法人電子情報通信学会の論文
• 2001-01-01

著者

• Anzai J

  The Authors Are With First Research Section Advanced Mobile Telecommuniations Security Technology Re

• Anzai Jun

  The Authors Are With First Research Section Advanced Mobile Telecommuniations Security Technology Re

• Matsumoto Tsutomu

  The Author Is With Division Of Artifical Environment And Systems Yokohama National University

• MATSUZAKI Natsume

  The authors are with First Research Section, Advanced Mobile Telecommunications Security Technology

• Matsuzaki N

  Matsushita Electric Industrial Co. Ltd. Kadoma‐shi Jpn

関連論文

• A Flexible Method for Masked Sharing of Group Keys : Special Section on Cryptography and Information Security

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