Presentation 1997/7/19
On Key Distribution Scheme for Secure Broadcast Communication Systems
Mototsugu Nishioka,
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Abstract(in Japanese) (See Japanese page)
Abstract(in English) We proposed the key distribution scheme for secure broadcast communication systems such that (a) Each entity has an individual key, (b) The length of the key distribution data is less than O(n), where n is the number of receivers, (c) It is secure against the collaborative attack by entities. In this paper, we show that the above proposed scheme (scheme A) has a problem that it needs to satisfy a complicated condition in the key generation to be secure against the collaborative attack, and propose a new key distribution scheme that gains safety against the collaborative attack from a different viewpoint. Our new scheme has the following features: (1) The problem in the scheme A does not occur in our new scheme, (2) It has no threshold that the collaborative attack is effective, (3) It is efficient for senders and receivers.
Keyword(in Japanese) (See Japanese page)
Keyword(in English) secure broadcast communication system / key distribution / collaborative attack
Paper # ISEC97-25
Date of Issue

Conference Information
Committee ISEC
Conference Date 1997/7/19(1days)
Place (in Japanese) (See Japanese page)
Place (in English)
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Paper Information
Registration To Information Security (ISEC)
Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) On Key Distribution Scheme for Secure Broadcast Communication Systems
Sub Title (in English)
Keyword(1) secure broadcast communication system
Keyword(2) key distribution
Keyword(3) collaborative attack
1st Author's Name Mototsugu Nishioka
1st Author's Affiliation Systems Development Laboratory, Hitachi, Ltd.()
Date 1997/7/19
Paper # ISEC97-25
Volume (vol) vol.97
Number (no) 182
Page pp.pp.-
#Pages 12
Date of Issue