基于角色的可信数字版权安全许可授权模型

为解决数字版权管理(DRM)仅支持静态的预先许可授权在许可控制方面无法确保被保护资源被非法使用问题,提出了基于角色的可信数字版权安全许可授权模型(rDRM),通过对DRM“主体客体条件约束权限”的定义,建立支持角色的许可授权机制,给出了版权安全许可授权、收权和迁移策略,以内容版权许可管理有限状态机实现许可状态的动态控制和许可状态管理。基于角色的rDRM许可授权模型具有很强的灵活性和易管理性,适用于具有较多用户且有着不同权限层次的授权管理,防止数字内容的非法复制和扩散。

Role-based secure authorization model for trusted digital rights management

Current static pre-authorization method for digital rights management can not effectively protect digital resources from illegal use without rights constraints.A role-based dynamic authorization model was developed for trusted digital rights management(rDRM),in which a license definited finite automation based on license authorization,revocation,and transformation strategies was adopted to maintain the license status.This efficient authorization method overcomes the difficulties of strategy expression,management,and reliability in traditional methods.The proposed rDRM is suitable for digital rights management with large numbers of users and is scalable to prevent illegal copying and spreading of digital contents.