基于非平稳性度量的数字印章信息匹配

Electronic Seal Matching Based on Nonstationarity Measure

该文运用数据流非平稳性度量,采用随机加密匹配方法设计数字印章.数字印章涵盖时间信息、设备信息、与盖章载体相关联的内容信息以及自定义信息,并用强噪声掩盖得到长为1024的信息序列(信息加强噪声序列).利用非平稳性度量方法不受扰动噪声分布影响这一特性,实现对噪声隐藏下的数字印章和数字印章信息的保密匹配.该数字印章匹配精度高,避免了对于密钥的管理,在传输过程不怕被截取而泄密;由于数字印章采用随机加密方法,对于数字印章信息达到一次一密,可以有效实现防篡改、防冒充的目的,在身份认证等信息安全领域中有着广泛的应用前景.

Based on nonstationarity measure,we design an electronic seal for matching by the random encryption method.The electronic seal contains time information,equipment information,content information and specific information.The electronic seal combines four parts of information into a sequence and is masked by strong noise.It is indeed an information sequence(Information plus strong noise sequences)with length of 1024.Since the nonstationarity measure is not affected by the noise distribution,the electronic seal can match with the electronic seal information security under the noise.Simulations indicate that the electronic seal achieves good performance in security,avoids key management and high match accuracy.It may have potential application in the field of information security such as authentication.