TheCodeBreakers
the new ciphers. From the slow crawl of nomenclator days, when the
introduction of a special group meaning Disregard the preceding group
would constitute a remarkable technical advance, the race between
offense and defense in cryptology acclerated to its modern pace.
The history of cryptology from the decade that saw both the death of
the black chambers and the birth of the telegraph to World War I is thus
a story of internal development. Without Rossignols or Willeses, and
without major wars or diplomatic struggles, cryptology could not
influence world events, and, except for one or two unusual cases, it did
not. The telegraph launched this evolution
of cryptology. It broke the monopoly of the nomenclator. The
nomenclator had reigned for 450 years as a general, all-purpose system,
but it could not meet the new requirements either of high-level
diplomatic or military communications or of low-level signal