グループ通信における情報流制御

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In the group con1munication, multiple entities send data units to the destination entities and can receive the data units sent in the group. Many papers have discussed how to provide application entities with the atomic and ordered delivery of the data units to the destinations in the group. In addition to the atomic and ordered delivery, it is important to provide secure group communication, i.e. only and all the proper entities can communicate in the presence of malicious entities. discusses how only and all the proper entities in the group obtain a common secret key by using the public key system in order to provide the secrecy and authenticity of the group communication. One entity would not like another entity to receive the data units sent by it in the group. An entity E_i which receives the data unit from E_j may forward the data unit to another entity E_k. Even though E_j would not like to send the data unit to E_k, E_k can obtain it through E_i. It is irregal information flow. In addition to protecting the group from being attacked by the outside, we have to control the flow of information among the entities in the group. discusses the lattice-based information flow model which is a generalization of the multi-level security model. In this paper, we discuss the data transmission procedure for the group of multiple entities which provides regal information flow. Each entity has a security class and some precedence relation is defined over the security classes. Each entity can send data units to only entities which have some security classes preceding the security class of the entity. By using the security class, we would like to present the data transmission procedure for the cluster. In section 2, we present a model of the communication system. In section 3, we discuss a lattice of security classes In section 4, we present the data transmission procedure on the basis of the security classes.
一般社団法人情報処理学会の論文
1994-03-07

グループ通信における情報流制御

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