A Flexible Method for Masked Sharing of Group Keys

Jun ANZAI; Natsume MATSUZAKI; Tsutomu MATSUMOTO

A Flexible Method for Masked Sharing of Group Keys

Jun ANZAI, Natsume MATSUZAKI, Tsutomu MATSUMOTO

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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 time 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 does not require a fixed and privileged distributor.

Publication: IEICE TRANSACTIONS on Fundamentals Vol.E84-A No.1 pp.239-246

Publication Date: 2001/01/01

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Type of Manuscript: Special Section PAPER (Special Section on Cryptography and Information Security)

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Jun ANZAI, Natsume MATSUZAKI, Tsutomu MATSUMOTO, "A Flexible Method for Masked Sharing of Group Keys" in IEICE TRANSACTIONS on Fundamentals, vol. E84-A, no. 1, pp. 239-246, January 2001, doi: .
Abstract: 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 time 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 does not require a fixed and privileged distributor.
URL: https://global.ieice.org/en_transactions/fundamentals/10.1587/e84-a_1_239/_p

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@ARTICLE{e84-a_1_239,
author={Jun ANZAI, Natsume MATSUZAKI, Tsutomu MATSUMOTO, },
journal={IEICE TRANSACTIONS on Fundamentals},
title={A Flexible Method for Masked Sharing of Group Keys},
year={2001},
volume={E84-A},
number={1},
pages={239-246},
abstract={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 time 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 does not require a fixed and privileged distributor.},
keywords={},
doi={},
ISSN={},
month={January},}

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TY - JOUR
TI - A Flexible Method for Masked Sharing of Group Keys
T2 - IEICE TRANSACTIONS on Fundamentals
SP - 239
EP - 246
AU - Jun ANZAI
AU - Natsume MATSUZAKI
AU - Tsutomu MATSUMOTO
PY - 2001
DO -
JO - IEICE TRANSACTIONS on Fundamentals
SN -
VL - E84-A
IS - 1
JA - IEICE TRANSACTIONS on Fundamentals
Y1 - January 2001
AB - 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 time 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 does not require a fixed and privileged distributor.
ER -