SECURE COMMUNICATION SYSTEM

专利名称：SECURE COMMUNICATION SYSTEM发明人：Patrick Jonathan Francis申请号：US13496053申请日：20100915

公开号：US20120243681A1公开日：20120927

专利附图：

摘要：A method of encrypting data to be accessed only by a group of users comprisesa user in the group receiving a user secret s=f(R, u), the user secret having been createdby operating a first one-way function fon parameters comprising a root key R and apublic identifier u, for the user. The user in the group receives a public identifier ufor each

of the other users in the group. The user in the group obtains a group key by operating asecond one-way function f2 on parameters comprising the user secret s,- and the publicidentifiers for the other users in the group u, u, . . . , u. . . u, u, wherein said second one-wayfunction/band said first one-way function fsatisfy: f(f(R,u), u, . . . , u)=f(f(R,u), u, u, u. . . , u)= . .. =f(f(R,u), u, u. . . , u). The user in the group encrypts the data using the group key.

申请人：Patrick Jonathan Francis

地址：Newport GB

国籍：GB

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