access数据库密码找回方法详解.doc

数据库密码找回方法详解 在数据库中，为了安全起见，可以为所建的数据库设置密码。但是，密码忘了怎么办?别急，这里介绍一种找回密码的方法。 用所建的数据库，在库文件的地开始的13个字节是库的密码位数据库密码找回方法详解。如果一个未加密的库，这13个字节原始数据依次为：86 37 5 44 9 6 28 613。事实上，当你设置了密码后，就将你的密码(请注意你所输入的密码是本文字符)的码与以上的13个字节数据进行异或操作，因此，从库文件的地始的13个字节就变成了密钥了数据库密码找回方法详解。例如，如果你设置的密码为，经过异或操作后，则开始的13个字节的数据变成了799 8 37 5 44 9 6 28 613。一个数据经过一次异或操作后，再一次经过同样的异或操作就可还原了。因此，对已经设置了密码的库，只要将13个密钥数据与原始的13个数据进行一次异或操作就可得到密码了数据库密码找回方法详解。 以下是一个语言的破解程序： *假设加密后的库为,并存放在盘的根目录下* # ″″ () { * 0[13]={0x86,0x,0x,0x37,0x5,0x44,0x9,0x,0x6,0x5,0x28,0x6,0x13}; *这是13个原始数据* [13],2[13]; *1用来存放加密后的13个密钥;2用来存放密码* ,; =(″:″,″″); (=){ (″不能打开该库!″); x(0);} ();(,0x42,0); (1,13,1,);*读取密钥* (=0; 2[]=0[][];*原始数据与密钥异或* ;} =1;(); (=0) (″未设密码!″); {(″密码是：″); (=0; (″%,2[]″);}} 顺便提一句，库设置密码时，虽然允许输入最多14个密码字符，但只有前13个有效。 daily morning exercises or class-break setting-up exercise and discipline inspection and appraisal of public signs;2, daily cleaning and inspection;3, the daily student school appearance, dress, wearing school card check;4, the daily duty guide to the leadership class discipline three rounds.Weekly moral education work:L, the flag raising ceremony and the national flag speech under the flag raising ceremony held on Monday;2, every week a class meeting, the meeting;3, every week two exercises, cleaning and hygiene, behavior norms, attendance situation published cloth appraisal, and the issue of the code of conduct;;4, weekly work week.Monthly moral education work:1, at least once a month, the theme of education activities, to patriotism education, behavior norms of education as the focus, combined with major retreat day.2, the monthly class quantization assessment and class teacher assessment, selection of behavior for the standard model class.Moral education in each term:1, at the end of each semester to form three good student, outstanding student cadres, civilized student.2, at lea