A team of researchers from the Harbin Institute of Technology in China have developed a system by which invisible ink and a basic cipher can be combined with relatively simple AI to create an ‘uncrackable’ offline encryption method. Up front: Remember when you learned that you could use lemon juice and water to write invisible messages on paper? Well, this is a lot like that. The researchers then take the invisible ink and use it to write a code that only an AI can break. Per the team’s paper: The ink was prepared by dissolving carbon nanoparticles in water, which…
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