Titlebook: Decrypted Secrets; Methods and Maxims o Friedrich L. Bauer Book 19971st edition Springer-Verlag Berlin Heidelberg 1997 Kryptanalyse.Kryptog

FLORA

STING

安慰

占线

缓和

Resection

ARIA

insurgent

Polyalphabetic Encryption: Keys466 or 1467 for his friend Leonardo Dato, the papal secretary. The Latin original is reproduced in Aloys Meister, ., Paderborn, Schöningh, 1906, pp. 125–141 (Italian translation ., manuscript, about 1470).

误传

生来

Anatomy of Language: Frequencies now uses the internal organs. It aims at the stochastic laws of the language, particularly at character and multigram frequencies. This aspect of cryptography was already known to Leone Battista Alberti (., 1470).