The Index of Coincidence and Its Applications in Cryptography : Publication No. 22 WITH L'indice de coïncidence et ses applications en cryptographie Publication No 22 (Traduction Francaise). [together 2 Volumes, Riverbank Publication]

Edité par Imprimerie-Librairie Militaire Universelle, L. Fournier, Paris, 1921

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First Edition. Publication No 22 (English): 87 pages; WITH Publication No 22 (French): 91 pages. Together 2 volumes. Lacks the rare English and French 8 page appendix inserts. Publisher's stiff tan wrappers with black printed front cover duplicating title page. Hinges reinforced with white linen tape (as issued). Self wraps, printed titles in black on front cover. Clean copies with a touch of wear and edgewear, and minor browning to the extremities. English edition has damage to the upper half of the spine panel and evidence of a sticker removal on the front wrapper. Wraps. A restricted publication not publicly available at the time of issue, it appears in a few institutional collections, but is rarely found on the market. 'Riverbank Publication No. 22, written in 1920 when Friedman was 28, must be regarded as the MOST IMPORTANT SINGLE PUBLICATION IN CRYPTOLOGY. It took the science into a new world.it described the solution of two complicated cipher systems. Friedman however, was less interested in proving their vulnerability than he was in using them as a vehicle for new methods of cryptanalysis. Fabyan had the pamphlet printed in France in 1922 to save money. General Cartier saw it and thought so highly of it that he had it translated and published forthwith - false-dating it "1921" to make it appear as if the French work had come first! In it, Friedman devised two new techniques. One was brilliant. It permitted him to reconstruct a primary cipher alphabet without having to quess at a single plainletter text. But the other was profound. For the first time in cryptology, Friedman treated a frequency distribution as an entity, as a curve whose several points were causally related, not as just a collection of individual letters that happen to stand in a certain order for noncausal (historical) reasons, and to this curve he applied statistical concepts. The results can only be described as Promethean, for Friedman's stroke of genius inspired the numerous, varied, and vital statistical tools that are indispensable to the cryptology of today. . This is why Friedman has said, in looking back over his career, that The Index of Coincidence was his greatest single creation. It alone would have won him his reputation. But in fact it was only the beginning.' (Kahn) Galland notes 'This work bears imprint 1922, but antedates the French translation noted below [1921]; reprinted later but also with imprint 1922. The study was completed in 1920.' Galland also notes Riverbank Laboratories as the imprint but we've chosen to note the imprint as it appears on the actual item. Authorship attribution from Galland. LITERATURE: J.S. Galland, J. S., "An Historical and Analytical Bibliography of Cryptology", page 68. Kahn, The CodeBreakers, 1996, p376-384 Shulman, An Annotated Bibliography of Cryptography, 1976, pp 84-5 (noting that the French translation was by General Cartier rather than arranged by him, and noting that both were printed in Paris by Col. Fabyan as anonymous publications).…

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Détails bibliographiques

Titre
The Index of Coincidence and Its Applications in Cryptography : Publication No. 22 WITH L'indice de coïncidence et ses applications en cryptographie Publication No 22 (Traduction Francaise). [together 2 Volumes, Riverbank Publication]
Auteur
[Friedman, William F.]; [Cartier, General]
Éditeur
Imprimerie-Librairie Militaire Universelle, L. Fournier, Paris
Année de publication
1921
État de l'article
Very Good
Reliure
Wraps
Édition
First Edition.
Catalogues du vendeur
Cryptography & Cryptology, History of Communication, History of Computing

Kuenzig Books ( ABAA / ILAB )

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Kuenzig Books trades in Antiquarian Science, Technology, Engineering, and Mathematics material. Subspecialties include early computing, chemistry, photography, the history of communication, and the discoveries that have impacted the way we live and work. We buy and sell antique scientific instruments (microscopes, optics, slide rules, computers) both didactic and professional. Add a broad range of documentary photography, ephemera, and eclectic material from other fields, and most visitors find something to interest them. We welcome your visit electronically or by appointment.…

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