Turing's relationship with John Cairncross (Allen Leech), a Soviet spy hiding as a cryptanalyst
at Bletchley, makes this abundantly obvious.
This view is backed up by Joseph Rochefort, Nimitz's chief cryptanalyst
, who said of a meeting to which he was called on 27 May, "It was obvious when Nimitz sent for me that he had already decided his course of action.
Due to Rochefort's expertise as a Japanese linguist, intelligence analyst, and cryptanalyst
, he was hand-picked by Safford for the position of Officer-in-Charge (OIC) at Pearl Harbor's Station Hypo, code name for the Combat Intelligence Unit and the administrative headquarters of the 14th Naval District.
The author describes that grim, yet at times hilarious conditions endured by the regular members who were essential supporters of the cryptanalysts
During the war, counter-intelligence officers and cryptanalysts
were deciphering German radio traffic in a program with the code-name Ultra, and under the inexorable approach of the Cold War they switched to deciphering Soviet radio traffic in a successor program called Venona.
Following the war, when cryptanalysts
examined the unread traffic, they found some of the details.
It explains Montgomery's success in Africa, because he never originally mentioned that he was materially assisted by Rommel's messages being deciphered by the Bletchley cryptanalysts
also discovered a couple of devastating methods of decrypting smart cards by analyzing their power usage and how they respond to faults.
When decrypting a cipher, cryptanalysts
look for various letter and word patterns.
required extraordinary mathematical skills combined with logical ingenuity and intuition.
John Keegan points out that for Midway, American cryptanalysts
provided a picture "as clear as the obscurities of war will ever allow" but that a little less intuition by the pilots engaged to act on it might have compromised that advantage.
Cryptosystems which have been disscused in this paper, with the infinity race between the cryptographers and the cryptanalysts
, these methods and their extensions will not be the end.
Last time we challenged cryptanalysts
with a short message, enciphered in three different ways, with the objective of reading the message and reconstructing all three modes of encipherment.
Cryptanalysis and Racketeering Records Unit examiners worked closely with other FBI National Security Agency analysts and cryptanalysts
to decipher the coded messages.
Co-developed by industry-renowned cryptographer and Revere Security's own Whitfield Diffie, the man responsible for secure Internet commerce and the Diffie-Hellman protocol, Hummingbird survived more than 1,000 hours of rigorous study by former cryptanalysts
from the National Security Agency and showed no vulnerabilities.