基于PDF417条码的文件验证  

File Authentication based on the PDF417 Bar Code

作　　者：贺媛媛[1] 田亮[2] 

机构地区：[1]石家庄铁路职业技术学院,河北石家庄050061 [2]河北师范大学,河北石家庄050024

出　　处：《石家庄铁路职业技术学院学报》2013年第1期77-84,共8页Journal of Shijiazhuang Institute of Railway Technology

摘　　要：随着电子信息技术的迅速发展,条码的自动识别技术也得到飞速发展,并很快成为迄今为止最为经济实用的自动识别技术。最初的一维条码因为信息容量有限等缺点,所以人们又设计出了性能更加优越的二维条码,然而PDF417条码是所有类型的二维条码中应用范围最广的条码之一。由于信息安全的不断发展,各种加密算法层出不穷,文件的真实性、有效性和完整性可通过多种途径进行验证。MD5就是一种优秀的加密算法,其原理就是利用文件散列值的唯一性而对文件作者和使用者所拥有的文件的一致性提供保证。With the continuous development of electronic information technology, the bar code automatic identification technology also has a rapid development, and has quickly become the most economical, practical and automatic identification technology by far. The initial one-dimensional bar code has disadvantages of the limited information capacity. So people design the two-dimensional bar code which has a more superior performance. Among all the two-dimensional bar codes, the PDF417 bar code is one of the most widely used bar codes of all types of two-dimensional bar codes. Due to the continuous development of information security, a variety of encryption algorithms are invented one after another. The authenticity, validity and integrity of the documents can be verified through a variety of ways among which the MD5 is an excellent encryption algorithm with the principle that the uniqueness of the file hash value can be used to provide a guarantee for the consistence of file of its author and readers.

关 键 词：二维条码 PDF417 文件验证 

分 类 号：TP30[自动化与计算机技术—计算机系统结构]