Ink laced with molecules that can store data has been used to write a letter containing a hidden, encoded message – the encryption key to unlock a text file of the novel The Wonderful Wizard of Oz
Ink containing polymers that can store data has been used to write a letter containing a hidden message – the encryption key to unlock a text file of L. Frank Baum’sat the University of Texas at Austin and his colleagues have developed a technique that involves steganography – the practice of hiding one message inside another.and decrypt files using the Advanced Encryption Standard , a common cryptography method. The group then encoded the cipher key into eight oligourethanes, a type of polymer.
Each polymer was made up of 10 smaller compounds called monomers. The middle eight monomers hold the details of the key, with one monomer on each side acting as the key’s synthesiser and decoder.The team mixed the polymers with isopropanol, glycerol and soot to make an ink. Using the ink, some of the researchers wrote a letter and then sent it to another person on the team.
, is higher than it would be through encoded magnetic spots on a hard disc. “The information density is mind-boggling,” he says.
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