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1.发明授权METHOD AND SYSTEM FOR AUTHENTICATED SECURE KEY DISTRIBUTION IN A COMMUNICATION SYSTEM 失效FOR安全的方法和系统认证密钥分布特征的通信系统
公开(公告)号：EP0711480B1
公开(公告)日：1997-06-11
申请号：EP93917657.4
申请日：1993-07-27
发明人： JANSON, Philippe , TSUDIK, Gene
IPC分类号： H04L9/32
CPC分类号： H04L9/0897 , H04L9/0827 , H04L9/0833 , H04L9/321
摘要： A method and system for providing secure authenticated cryptographic key distribution in a communication system has properties very similar to a Two-Party Authentication Protocol. A new group key is distributed by a server to a selected group of users in the system. A braided structure of the meassages sent by the server to each user allows achieving authentication and, at the same time, secure and secret key distribution. Moreover, the braided structure makes it possible to construct minimal-length protocol messages.
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2.发明授权SYSTEM AND METHOD FOR CHANGING THE KEY OR PASSWORD IN A SECURE DISTRIBUTED COMMUNICATIONS NETWORK 失效系统和方法，通过关于修改通信网络密钥分配键或密码
公开(公告)号：EP0720796B1
公开(公告)日：1997-07-16
申请号：EP93920773.4
申请日：1993-09-20
IPC分类号： H04L9/08
CPC分类号： H04L9/0891
摘要： A robust and secure password (or key) change method between a user and an authentication server in a distributed communication network is disclosed. The protocol requires the exchange of only two messages between the user desiring the key change and the server, the user's request including, at least partly encrypted, an identification of the sending user, old and new keys, and two nonces, at least one including a time indication. The authentication server's response includes a possibly encrypted accept/reject indication and the regularly encrypted request from the user.
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3.发明公开SYSTEM AND METHOD FOR CHANGING THE KEY OR PASSWORD IN A SECURE DISTRIBUTED COMMUNICATIONS NETWORK 失效系统和方法，通过关于修改一个安全的分布式通信网络密钥或关键词
公开(公告)号：EP0720796A1
公开(公告)日：1996-07-10
申请号：EP93920773.0
申请日：1993-09-20
CPC分类号： H04L9/0891
摘要： A robust and secure password (or key) change method between a user and an authentication server in a distributed communication network is disclosed. The protocol requires the exchange of only two messages between the user desiring the key change and the server, the user's request including, at least partly encrypted, an identification of the sending user, old and new keys, and two nonces, at least one including a time indication. The authentication server's response includes a possibly encrypted accept/reject indication and the regularly encrypted request from the user.
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4.发明公开METHOD AND SYSTEM FOR AUTHENTICATED SECURE KEY DISTRIBUTION IN A COMMUNICATION SYSTEM 失效FOR安全的方法和系统认证密钥分布特征的通信系统
公开(公告)号：EP0711480A1
公开(公告)日：1996-05-15
申请号：EP93917657.0
申请日：1993-07-27
发明人： JANSON, Philippe , TSUDIK, Gene
CPC分类号： H04L9/0897 , H04L9/0827 , H04L9/0833 , H04L9/321
摘要： A method and system for providing secure authenticated cryptographic key distribution in a communication system has properties very similar to a Two-Party Authentication Protocol. A new group key is distributed by a server to a selected group of users in the system. A braided structure of the meassages sent by the server to each user allows achieving authentication and, at the same time, secure and secret key distribution. Moreover, the braided structure makes it possible to construct minimal-length protocol messages.
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