公开(公告)号：US5148479A

公开(公告)日：1992-09-15

申请号：US672226

申请日：1991-03-20

申请人： Raymond F. Bird ,  Inder S. Gopal ,  Philippe A. Janson ,  Shay Kutten ,  Refik A. Molva ,  Marcel M. Yung

发明人： Raymond F. Bird ,  Inder S. Gopal ,  Philippe A. Janson ,  Shay Kutten ,  Refik A. Molva ,  Marcel M. Yung

IPC分类号： H04L9/06 ,  G06F21/00 ,  G09C1/00 ,  H04L9/14 ,  H04L9/32 ,  H04L12/22

CPC分类号： H04L63/08 ,  G06F21/445 ,  H04L9/002 ,  H04L9/3218 ,  H04L9/3271 ,  G06F2221/2103

摘要： An arrangement of authenticating communications network users and means for carrying out the arrangement. A first challenge N1 is transmitted from a first user A to a second user B. In response to the first challenge, B transmits a first response and second challenge N2 to A. A verifies the first response. A then generates and transmits a second response to the second challenge to B, where the second response is verified. The first response must be of a minimum formf(S1, N1, . . . ),and the second response must be of the minimum formg(S2, N2, . . . ).S1 and S2 are shared secrets between A and B. f() and g() are selected such that the equationf'(s1,N1', . . . )=g(S2, N2)cannot be solved for N1' without knowledge of S1 and S2. f'() and N1' represent expressions on a second reference connection. Preferably, the function f() may include the direction D1 of the flow of the message containing f(), as in f(s1, N1, D1, . . . ). In such a case, f() is selected such that the equationf'(S,N1',D1', . . . )=f(S, N2, D1, . . . )cannot be solved for N1' without knowledge of S1 and S2 and D1' is the flow direction indicator of the message containing f'() on the reference connection.

公开(公告)号：US5634011A

公开(公告)日：1997-05-27

申请号：US517305

申请日：1995-08-21

申请人： Joshua S. Auerbach ,  John E. Drake, Jr. ,  Prabandham M. Gopal ,  Elizabeth A. Hervatic ,  Marc A. Kaplan ,  Shay Kutten ,  Marcia L. Peters ,  Michael J. Ward

发明人： Joshua S. Auerbach ,  John E. Drake, Jr. ,  Prabandham M. Gopal ,  Elizabeth A. Hervatic ,  Marc A. Kaplan ,  Shay Kutten ,  Marcia L. Peters ,  Michael J. Ward

IPC分类号： H04L12/18 ,  H04L12/24 ,  H04L12/56 ,  H01H67/00

CPC分类号： H04L12/1854 ,  H04L41/042 ,  H04L12/185 ,  H04L12/1877 ,  H04L2012/5626

摘要： A multinode, multicast communications network has a distributed control for the creation, administration and operational mode selection operative in each of the nodes of the network. Each node is provided with a Set Manager for controlling either creation of, administration or access to a set of users to whom a multicast is to be directed. The Set Manager maintains a record of the local membership of all users associated with the node in which the Set Manager resides. A given Set Manager for each designated set of users is assigned the task of being the Set Leader to maintain membership information about the entire set of users in the multicast group. One of the Set Managers in the communications network is designated to be the Registrar which maintains a list of all the Set Leaders in the network. The Registrar insures that there is one and only one Set Leader for each set of users, answers inquiries about the membership of the sets and directs inquiries to appropriate Set Leaders if necessary. All of the set creation, administration and control functions can therefore be carried out by any node of the system and provision is made to assume the function at a new node when failure or partition in the network occurs.

摘要翻译： 多节点组播通信网络具有分布式控制，用于在网络的每个节点中操作的创建，管理和操作模式选择。 每个节点都设有一个集管理器，用于控制要组播多路广播的一组用户的创建，管理或访问。 集管理器维护与Set Manager所在节点相关联的所有用户的本地成员资格记录。 为每个指定的用户组给定的集合管理器被分配为作为集合领导者的任务以维护关于组播组中的整个用户组的成员关系信息。 通信网络中的一个集合管理器被指定为注册服务商，该服务器维护网络中所有集团领导者的列表。 注册服务机构确保每组用户只有一个，只有一个集合领导，回答关于集合成员的查询，并在必要时向相应的集合领导者查询。 因此，所有的创建，管理和控制功能都可以由系统的任何节点执行，并且在网络中发生故障或分区时，将提供在新节点上承担功能。

公开(公告)号：US5309433A

公开(公告)日：1994-05-03

申请号：US900635

申请日：1992-06-18

申请人： Israel Cidon ,  David W. Davenport ,  Jeffrey H. Derby ,  John G. Dudley ,  Inder S. Gopal ,  James P. Janniello ,  Marc A. Kaplan ,  Francis R. Koperda ,  Shay Kutten ,  Kenneth H. Potter, Jr.

发明人： Israel Cidon ,  David W. Davenport ,  Jeffrey H. Derby ,  John G. Dudley ,  Inder S. Gopal ,  James P. Janniello ,  Marc A. Kaplan ,  Francis R. Koperda ,  Shay Kutten ,  Kenneth H. Potter, Jr.

IPC分类号： H04L12/18 ,  H04L12/56 ,  H04J3/26

CPC分类号： H04L45/48 ,  H04L12/18 ,  H04L45/00 ,  H04L45/16 ,  H04L49/203 ,  H04L2012/5646

摘要： A packet communications system provides for point-to-point packet routing and multicast packet routing to limited subsets of nodes in the network, using a routing field in the packet header which is processed according to two different protocols. A third protocol is provided in which a packet can be multicast to the limited subset even when launched from a node which is not a member of the subset. The routing field includes a first portion which contains the route labels necessary to deliver the packet to the multicast subset. A second portion of the routing field contains the multicast subset identifier which can then be used to deliver the packet to all of the members of the multicast subset. Provision is made to backtrack deliver the packet to the last node identified before the multicast subset if that last node is itself a member of the subset.

摘要翻译： 分组通信系统使用根据两种不同协议处理的分组报头中的路由字段来提供点到点分组路由和组播分组路由到网络中有限的节点子集。 提供了第三协议，其中即使从不是子集的成员的节点启动时，分组也可以被多播到受限子集。 路由字段包括第一部分，其包含将分组递送到多播子集所必需的路由标签。 路由字段的第二部分包含多播子集标识符，然后可以将该组播子集标识符传递给组播子集的所有成员。 如果最后一个节点本身是子集的成员，则将配置回溯到将分组递送到多播子集之前识别的最后一个节点。