The main purpose of this paper is to discuss the current database information leakage problem, and discuss the
important role played by the message encryption techniques in database security, As well as MD5 encryption technology
principle and the use in the field of website or application. This article is divided into introduction, the overview of the
MD5 encryption technology, the use of MD5 encryption technology and the final summary. In the field of requirements
and application, this paper makes readers more detailed and clearly understood the principle, the importance in database
security, and the use of MD5 encryption technology.