Presentation 1998/12/10
Secure Group Key Distribution Schemes with Terminal Revocation
Natsume Matsuzaki, Jun Anzai,
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Abstract(in Japanese) (See Japanese page)
Abstract(in English) We propose group key distribution schemes with an efficient"terminal revocation", which renews a group key of all the terminals except a specific one. In such broadcast systems as pay TV, conference system and mobile telecommunication for a group, a quick terminal revocation is required to protect the secrecy of the group communication. To realize the quick terminal revocation when the group has many terminals, we propose the schemes of which the transmitted data amount and the time delay after identifying the revoked terminal do not depend on the number of the terminals. The difficulty of detecting the new group key for the revoked terminal is estimated as same as breaking RSA public key cryptosystems.
Keyword(in Japanese) (See Japanese page)
Keyword(in English) key distribution / group / terminal revocation / RSA
Paper # ISEC98-52
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Committee ISEC
Conference Date 1998/12/10(1days)
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Language ENG
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) Secure Group Key Distribution Schemes with Terminal Revocation
Sub Title (in English)
Keyword(1) key distribution
Keyword(2) group
Keyword(3) terminal revocation
Keyword(4) RSA
1st Author's Name Natsume Matsuzaki
1st Author's Affiliation Advanced Mobile Telecommunications Security Technology Research Laboratories Co., Ltd.()
2nd Author's Name Jun Anzai
2nd Author's Affiliation Advanced Mobile Telecommunications Security Technology Research Laboratories Co., Ltd.
Date 1998/12/10
Paper # ISEC98-52
Volume (vol) vol.98
Number (no) 464
Page pp.pp.-
#Pages 8
Date of Issue