Trithemius Cipher & the Tabula Recta: The Foundation of Modern Polyalphabetic Encryption
A comprehensive guide to the Trithemius cipher and the tabula recta covering Johannes Trithemius's biography, the invention of the progressive key system, complete encryption examples using the tabula recta, Trithemius's influence on Vigenère and della Porta, the Steganographia controversy, and the cipher's modern significance as the foundation of polyalphabetic encryption.