Photo by Chunlea Ju on Unsplash

One Public Key and Thousands of Private Keys

We cling onto wet signatures within the Internet era, but sometime soon we need to deprecate them, and their flawed associated methods. Within this COVID-19 period, I still get asked for my wet signature, and then take a GIF of my signature, and the paste it into a document, and produce a PDF of the whole document. Can anyone see the flaw here? Everyone knows that it’s not too difficult to convert a PDF into…



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Prof Bill Buchanan OBE

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