DRM安全策略的模糊层次分析法效用评估及选取

Fuzzy analytic hierarchy process-based utilities evaluation and adoption for DRM security policies

从不同等级安全与效用分析的新角度,提出了基于模糊层次分析法的DRM安全策略效用评估及其博弈论选取。通过构建安全策略的层次分析结构,采用模糊判断一致矩阵,分析可选安全组件与服务在安全策略中的权重关系,并将所得权重用于计算DRM安全策略组合的实际效用以及进而实现博弈论选取,得出多方安全——效用的Nash均衡,即最优均衡安全策略组合及其存在条件。一组典型安全策略的实例分析表明,博弈结果存在2组不同的安全策略组合,内容与服务提供商可根据数字内容购买用户数及平均购买量等应用情形来有效部署DRM系统,从而获得数字版权保护与各方实际收益的均衡。

The utility evaluation of DRM security policies based on fuzzy analytic hierarchy process(FAHP) and their game-theoretic adoptions were proposed from a novel perspective of the different level security and utilities' analyses.Based on the analytic hierarchy structure, the fuzzy estimation consistency matrix was employed to analyze the weights of optional security components and services, and then the gained weight values were further used for the computing of security policies' utilities and the accomplishing the game, finally yielding Nash equilibriums, that is, optimal policies profiles, as well as pre-conditions for participants.The use case for a group of the typical security policies shows that the result of the game includes two different groups of security policies profiles, as well as contents/services provider could effectively deploy a DRM system in term of the number of consumers purchasing digital contents, and average purchase, thus achieving the balance between the digital copyrights protection and real payoffs of participants.