%0 Journal Article
%T Multi-Level and Dynamic Permission Strategy for CAD Model Security Protection<br>多层次动态权限策略的CAD模型安全保护
%A JIA Wen-Zhi
%A CHEN Zhi-Yang
%A <br>贾文质
%A 陈志杨
%J 计算机系统应用
%D 2010
%I 
%X Based on the present situation of CAD document protection system, the paper focuses on the innovation of CAD security model. It analyses current problems and puts forward a CAD model protection algorithm whose basis is a multi-level and dynamic permission strategy. This algorithm allows different access permissions or operations to the CAD models while in different phases of the product life cycle. Combined with the technologies of Access Control, Permission Manage, Encryption and Decryption, the paper successfully makes the security control of the CAD model more reliable in its product life cycle.
%K dynamic permission
%K CAD model protection
%K product life cycle
%K CAD model access control
%K permission state migration<br>多层次动态权限
%K CAD模型保护
%K 产品生命周期
%K CAD模型访问控制
%K 权限状态迁移
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=8240383F08CE46C8B05036380D75B607&jid=D4F6864C950C88FFCE5B6C948A639E39&aid=26A6CCED042A1A71AD195F7434321036&yid=140ECF96957D60B2&vid=2A8D03AD8076A2E3&iid=0B39A22176CE99FB&sid=4F2F18DD6F870C2C&eid=67969BA850333433&journal_id=1003-3254&journal_name=计算机系统应用&referenced_num=0&reference_num=6