Fix a License key generator program

We have a License key generator which generates a set of License keys from a base serial number, it also takes some bits from the date and time so that there cannot be collisions if someone accidentally later creates a set of licenses from overlapping serial number. So for example if I create license keys from 1-100 today, if I generate 90-150 in 6 months none of the License keys will overlap the first set (none at all, but in particular 90-100 where we have specified overlapping serial numbers

The generator part works, but I want to make it reversible (Which it was orginally until we added the date part) so that entering the license key XXXX-YYYY-ZZZZ-AAAA will give me the original serial number and the region of time it was created.

Skills: C Programming

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( 134 reviews ) Hong Kong, Hong Kong

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No issue, Regards, Alex

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