How to Make Anything Signify Anything: Sir Frances Bacon and the Cryptographic Renaissance

An illustrated lecture follows Francis Bacon’s biliteral cipher through the work of cryptanalyst William F. Friedman.

Bill Sherman considers Bacon's cipher system through the career of William F. Friedman, whose military cryptanalysis work began and ended with study of the so-called biliteral cipher. Sherman is the Warburg Institute director and Professor of Cultural History. The official page title spells the name “Frances Bacon”; the source text uses Francis in the body.