Under starter’s orders … it’s the hash race

Prof Bill Buchanan OBE FRSE
3 min readAug 20, 2018

A hash signature is used to create a digital fingerprint for data. If it’s one bit of data or a whole network of data, we can produce a digital finger print for it. If we change one bit in the data, we should create a completely different hash signature. And don’t expect there do be some fancy mathematics to reverse it — as it’s a one way function.

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Prof Bill Buchanan OBE FRSE

Professor of Cryptography. Serial innovator. Believer in fairness, justice & freedom. Based in Edinburgh. Old World Breaker. New World Creator. Building trust.