A New Encoding Approach Realizing High Security and High Performance Based on Double Common Encryption Using Static Keys and Dynamic Keys

摘要

Recently, most of information systems such as customer management systems have been worked via networks. Encoding characters in databases or files is essential to prevent from leaking or stealing important information such as customer information. These systems, however, need the highest security level as well as higher performance. We propose a new method to improve performance without sacrificing security level. The key idea is encrypting only important information and using double common-key encryption with two types of keys, I.e. static keys and dynamic keys in order to shorten encrypting time and to secure systems. Our experiments revealed that high performance was realized at the same security level as a traditional way.