Breaking Teleprinter Ciphers at Bletchley Park

This book is an edition of the <i>General Report on Tunny</i> with commentary that clarifies the often difficult language of the GRT and fitting it into a variety of contexts arising out of several separate but intersecting story lines, some only implicit in the GRT. <br /> <ul> <li>Explores the likely roots of the ideas entering into the Tunny cryptanalysis</li> <li>Includes examples of original worksheets, and printouts of the Tunny-breaking process in action</li> <li>Presents additional commentary, biographies, glossaries, essays, and bibliographies</li> </ul>