分析了MD5加密算法和碰撞的原理,对目前常规MD5算法加密结果容易被破解的问题,利用JDK的ja-va.security包中的MD5算法给出了JavaBeans形式的变换算法,以期进一步减小破解时碰撞的概率,增强系统加密的安全性。-Analysis of the MD5 encryption algorithm and the collision theory, the current results of conventional MD5 algorithm for encryption easily cracked the problem using the JDK' s ja-va.security package MD5 algorithm is given in the form of JavaBeans transform algorithm to further reduce the crack When the probability of collisions and enhance the system encryption security.