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Reconstruction of the appearance of cyclometer, a device used to break the encryption of the Enigma machine.Based on sketches in Marian Rejewski's memoirs.. Cryptanalysis (from the Greek kryptós, "hidden", and analýein, "to analyze") refers to the process of analyzing information systems in order to understand hidden aspects of the systems. [1]
Cryptonomicon is a 1999 novel by American author Neal Stephenson, set in two different time periods.One group of characters are World War II–era Allied codebreakers and tactical-deception operatives affiliated with the Government Code and Cypher School at Bletchley Park (UK), and disillusioned Axis military and intelligence figures.
Apocalyptic fiction is a subgenre of science fiction that is concerned with the end of civilization due to a potentially existential catastrophe such as nuclear warfare, pandemic, extraterrestrial attack, impact event, cybernetic revolt, technological singularity, dysgenics, supernatural phenomena, divine judgment, climate change, resource depletion or some other general disaster.
Multivac is a fictional supercomputer appearing in over a dozen science fiction stories by American writer Isaac Asimov.Asimov's depiction of Multivac, a mainframe computer accessible by terminal, originally by specialists using machine code and later by any user, and used for directing the global economy and humanity's development, has been seen as the defining conceptualization of the genre ...
The UK and US employed large numbers of women in their code-breaking operation, with close to 7,000 reporting to Bletchley Park [31] and 11,000 to the separate US Army and Navy operations, around Washington, DC. [32] By tradition in Japan and Nazi doctrine in Germany, women were excluded from war work, at least until late in the war. Even after ...
However, in cryptography, code has a more specific meaning: the replacement of a unit of plaintext (i.e., a meaningful word or phrase) with a code word (for example, "wallaby" replaces "attack at dawn"). A cypher, in contrast, is a scheme for changing or substituting an element below such a level (a letter, a syllable, or a pair of letters, etc ...
American science fiction author and editor Lester del Rey wrote, "Even the devoted aficionado or fan—has a hard time trying to explain what science fiction is," and the lack of a "full satisfactory definition" is because "there are no easily delineated limits to science fiction." [3] Another definition comes from The Literature Book by DK and ...
Niven's laws were named after science fiction author Larry Niven, who has periodically published them as "how the Universe works" as far as he can tell.These were most recently rewritten on January 29, 2002 (and published in Analog magazine in the November 2002 issue).