版式文档OFD签章模块的研究与实现

Research and implementation of format document OFD electronic seal module

OFD是我国具有自主知识产权的版式文档标准,对PDF等其它版式文档的签章功能已经实现,版式文档OFD签章模块的设计与实现是目前研究的重点和难点。文中对版式文档OFD标准中数字签名模块进行了研究,并依据国家密码管理局最新发布的《安全电子签章密码应用技术规范》,结合USBKEY技术与ASN.1标准,实现了对电子印章数据的安全存储与使用,并以此为基础,实现了对OFD文件的签章与验签功能。分析表明,该功能模块运行稳定,符合相关安全性要求并易于移植和部署。该模块的实现对于国家版式文档OFD的推广应用以及实现国内电子公文系统的核心技术国产化具有重要意义。

OFD is a standard format document in our country with independent intellectual property rights,the signature functions of the PDF and other format documents are implemented,the design and implementation of the OFD format document signature module are the emphasis and difficulty in the present study. In this article,the standard of format document OFD especially the digital signature module is studied,according to the Secure electronic seal cryptography technical specification latest released by the State Cryptography Administration,combining USBKEY technology and the ASN. 1 standard,it implements the storage and usage of the electronic seal data in safety,and on this basis,it realizes the signature and verification function of OFD file. The analysis shows that the function module running stability,it conforms to the requirements of the relevant security and is easy to transplant and deployment.The realization of the module for national OFD format document application and realize localization of the core technology of electronic official document system of our country is of great significance.