高校在线教育考试系统的数据安全加密算法研究

Research on Data Security Encryption Algorithm of Online Education Examination System in Universities

许多高校已经建立了在线教育考试系统,在线考试系统存在的安全隐患因此变得不容忽视。此次研究引入基于部分加密算法对数据进行加密,并将该方法与其他传统的加密算法进行加密安全性与加密效率对比分析。结果表明,综合了次要平面快速加密、区块混沌置乱以及最高位平面区块加密后,最接近方法 f(全文加密),在加密数据时的置乱、分块选择、整合以及位平面分解所引起的开销,比例最高大概在60%,表明了实际加密运算耗时略小于额外开销的耗时,此次研究所提出的动态加密方式具有较好的效果,能够大大降低密文的可读性。基于混合加密算法的可以较好的应用在高校在线教育考试系统的数据安全防护中,能为我国高校在线教育安全研究工作提供一定的帮助和支持。

Many colleges and universities have established online education examination systems, so the security risks of online examination systems cannot be ignored. In view of this, this research introduces data encryption based on partial encryption algorithms, and compares the encryption security and encryption efficiency with this method and other traditional encryption algorithms.The results show that after combining the secondary plane fast encryption, block chaos scrambling and the highest bit plane block encryption, it is the closest method to method f(full text encryption), scrambling, block selection, integration and bit plane when encrypting data The overhead caused by decomposition is about 60% at the highest, indicating that the actual encryption operation time is slightly less than the time consumption of the additional overhead. The dynamic encryption method proposed in this study has a good effect and can greatly reduce the ciphertext readability. Based on the hybrid encryption algorithm, it can be better used in the data security protection of the online education examination system of colleges and universities, and can provide certain help and support for the online education security research work of Chinese colleges and universities.