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.
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Hello. I know what you mean. I think it seems clear and simple. If your job is not urgent my working time will take 2 days. Please contact for me then discuss detail. Regards.