摘要： GridDaEn 是针对广域网环境开发的一个数据网格系统，其通过将广域网环境下各种异构存储系统进行抽象虚拟，实现对这些数据资源的统一访问和管理，并为用户提供统一的逻辑视图。GridDaEn 面向广域网环境，这使得其面临极大的安全风险。根据GridDaEn 结构，给出GridDaEn 安全结构模型，并在广域网环境下进行实现。测试结果表明，系统能够提供GridDaEn 所需要的安全支持。

关键词: 数据网格；GridDaEn；网格安全

Abstract: GridDaEn is a data grid system designed for wide-area network environment. It integrates many kinds of wide heterogeneous storage resources by virtual data sets. It supports uniform secure access and management of resources, and provides visual global views for users. GridDaEn is faced with some noted security problems in data grid circumstances. According to GridDaEn’ architecture, this paper mainly presents GridDaEn’s security architecture model, and implements it in wide-area network environment. Experiments show that it can provide security supports of GridDaEn.

Key words: Data grid; GridDaEn; Grid security