产品设计文档安全模型研究与实现

Research and implement on the security model of Production design documents

针对网络化制造产品文档的机密性安全问题,本文设计了一种对称加密与非对称加密相结合的文档安全模型。模型采用对称加密算法对于VRML格式的产品设计文档提供机密性,并基于PKI的支持对于会话密钥进行保密传输,在保证产品设计文档加解密效率的同时解决了传统模式下的密钥交换问题;采用双向身份认证技术保证了服务器和客户端双方的身份认证。原型系统基于标准VRML文件格式和B/S架构,具有良好的跨平台性。

Aimed at the confidentiality problem for the documents in the networked manufacture,a security model for the file which combined symmetric encryption and dissymmetrical encryption is designed in the paper. The model can ensure the confidentiality of the product design documents in the VRML format by adopting symmetric encryption arithmetic,and can transmit the conversation key in safety based on the support of PKI. It solves the problem of key exchange in traditional model,at the same time the efficiency of the encryption and decryption is ensured. The identity authentication of both server and client is ensured by adopting bidirectional identification technology. The prototype system is developed based on standard VRML format and B/S architecture with a good adaptability.