MD5密码算法 本程序是在MD5的算法中求Hash值中相对比较简单的，每一处的公式都是显而易见的，通过阅读MD5的算法，可以MD5的算法思想重新遍历一遍。-MD5 cryptographic algorithm of this procedure is the MD5 algorithm and hash value is relatively simple, every formula is obvious by reading the MD5 algorithm can be MD5 a

Java code for multi-layer/multi-level image encryption. At first level, effectively encrypts the image. At second level, re-encrypt the encrypted image. Little hard to understand. Have patience when reading the code (an honest advise for java beginne

Cloud based re encryption. this uses el gamal re encryption procedure which uses a manager as intermediate between the owner of the file and the receiver of the file. File is send using java socket prgmg.