Adjacent to the encrypted text is a table resembling one used in a traditional style of cipher called a Bellaso/Della Porta cipher—invented in 1553 by Italian cryptologist Giovan Battista ... This was ...

What secret alchemical knowledge could be so important it required sophisticated encryption? The setting was Amsterdam, 2019 ...

What secret alchemical knowledge could be so important it required sophisticated encryption? The setting was Amsterdam, 2019. A conference organised by the Society for the History of Alchemy and ...