Used to share software know that, generally sharing software (especially abroad) will be used for some time to make some "harsh" requirements, such as allowing you to enter registration number and so on. If you want to achieve in the software of the "function", then there are many ways. Here I introduce a I think a higher security for reference purposes only. We all know that when you type in the command line "dir" command, the system will read out a known serial number of hexadecimal digits. The number of millions of theoretical possible, but it is very difficult to find two the same hard drive serial number. This is my way of theoretical basis of this registration, specify the disk through the judge decided that the machine serial number, registration number.

利用磁盘的序列号进行软件加密.doc

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