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A novel signature scheme based on DSA is proposed. When adding group member, parameters transferred between group member and group center were strengthened verified to ensure the information accurate. When deleting group member, modification to public key of group member was restricted to ensure that the deleted member was unable to sign. The parameters in the proposed scheme are less than 160 bits...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.