【摘要】 研究了一种对网络化CAPP系统的工艺文档通过嵌入摘要信息进行签名保护的有效方法。通过摘要信息函数Shadow算法加密得到工艺文档的摘要信息并嵌入到XML工艺文档中,保证了文档信息的完整性。以此为核心,实现了签名的生成、校验和显示,保障了网络环境下CAPP系统中工艺数据的权威和真实。本文研究的方法可以推广到其它信息系统中。更多还原

【Abstract】 The paper studied an effective method for protecting process documents in the CAPP system through digital signatures.The message digest encrypted by the Shadow Algorithm,a type of message digest function,is embedded into XML-formatted process documents,The generation,verification and display of digital signatures are realized.The method has ensured the integrity and authority of the process documents′ information in the CAPP Net system and can be extended to other information systems.更多还原