自己写的，用des算法根据密钥加密解密图片 -des jia jie mi tu pian shu ru mi yao

original rsa as given by rivest,shamir , and adleman. Its problems in decryption are optimized using rsa variants like crt rsa, multiprime rsa, rebalanced rsa and rprime rsa. U should give the no. of bits to be 1024 and check it on netbeans 6.5 or la