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Serial Number System Challenge

The Programming Works – I stumbled across an interesting link that made me think about a solid serial number system based on strong cryptography. Cryptography discourages systems based on secret algorithms, and relies on open algorithms and secret keys. So let us develop a serial number generation/verification system with the same usability as the one in the linked article but without any secret algorithms. First, our serial numbers should have the form XXXX-XXXX-XXXX-XXXX-XXXX where X – an uppercase english letter A..Z; to prevent user’s confusion let us exclude the letter O which looks like zero, so in ...
Favorite? Off-Topic? Serg @ 2016-01-01 10:58

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