Project Gutenberg 2013-03-10 Public domain in the USA. 135 Jacob, P. L. 1806 1884 Lacroix, Paul Jacob, Paul L. Dufour, Pierre Jacob, Bibliophile Jacob, Paul Lacroix 96140672 La Cryptographie, ou, l'art d'écrire en chiffres Produced by Laurent Vogel, Christine P. Travers and the Online Distributed Proofreading Team at http://www.pgdp.net (This book was produced from scanned images of public domain material from the Google Print project.) "La Cryptographie, ou, l'art d'écrire en chiffres" by P. L. Jacob is a scientific publication written in the mid-19th century. This work delves into the intricate world of cryptography, exploring both its historical origins and various methods developed over time for encoding secret messages. The book covers a wide range of cryptographic techniques used from antiquity to the modern era. At the start of the text, the author introduces the concept of cryptography and its various applications as a means of concealing written communications from prying eyes. The opening chapter outlines historical methods utilized for secret writing, referencing ancient examples such as the clever techniques attributed to figures like Herodotus and the Lacédémonians using devices like the scytale. It sets the stage for a comprehensive exploration of cryptographic methods across different societies and epochs, establishing a foundation for further discussion on the complex art of secret writing that formed a significant part of communication in both personal and political contexts. (This is an automatically generated summary.) file:///public/vhost/g/gutenberg/html/files/42297/42297-h/images/cover-page.jpg fr Cryptography Ciphers Signs and symbols Z Text FR Sciences et Techniques Browsing: Computers & Technology Browsing: Science - General 332062 331872 2024-09-17T16:20:10.107908 2023-09-18T10:57:45.638712 text/html text/html 323920 2013-03-10T13:26:56 text/html; charset=iso-8859-1 325427 2013-03-10T13:26:58 text/html; charset=iso-8859-1 application/zip 337835 2024-09-17T16:20:18.581372 application/epub+zip 337001 2024-09-17T16:20:11.729884 application/epub+zip 160677 2024-09-17T16:20:11.028906 application/epub+zip 458142 2024-09-17T16:20:23.012322 application/x-mobipocket-ebook 421829 2024-09-17T16:20:17.740361 application/x-mobipocket-ebook 248898 2022-09-19T10:27:40.026476 application/x-mobipocket-ebook 246208 245981 2024-09-17T16:20:08.517931 2023-09-18T10:57:43.956665 text/plain; charset=us-ascii text/plain 240533 2013-03-10T13:26:20 text/plain; charset=iso-8859-1 93850 2013-03-10T13:26:58 text/plain; charset=iso-8859-1 application/zip 19592 2024-09-17T16:20:23.171392 application/rdf+xml 12695 2024-09-17T16:20:11.146888 image/jpeg 2414 2024-09-17T16:20:11.087886 image/jpeg 350465 2024-09-17T16:20:10.186911 application/octet-stream application/zip Archives containing the RDF files for *all* our books can be downloaded at https://www.gutenberg.org/wiki/Gutenberg:Feeds#The_Complete_Project_Gutenberg_Catalog fr.wikipedia en.wikipedia