单词	cryptanalysis
释义	cryptanalysis /ˌkrɪptəˈnalɪsɪs / noun [mass noun] The art or process of deciphering coded messages without being told the key.In this way, through cryptanalysis of the error messages, it is possible to glean clues on the make up of a legitimate password.... She shows how efforts by scientists using computer analyses, information theory, linguistics and cryptanalysis to break the genetic code in the 1950s yielded no results. Differential cryptanalysis was ultimately a mathematical technique just waiting to be rediscovered by someone outside the Triple Fence interested in sophisticated codes. Derivatives cryptanalyst /ˌkrɪptˈan(ə)lɪst/ noun ... For the most part, cryptanalysts focus on the standard threat model (chosen plaintext/ciphertext attacks), and related-key attacks are only occasionally studied. In addition to his theoretical contributions, Turing was one of the cryptanalysts who worked at Bletchley Park between 1939 and 1945 decrypting intercepted Nazi communications. Using information about timing, power consumption, and radiation of a device when it executes a cryptographic algorithm, cryptanalysts have been able to break smart cards and other would-be secure tokens. cryptanalytic /ˌkrɪptanəˈlɪtɪk/ adjective ... Sure, there are always new developments in cryptanalysis, but we've never seen an operationally useful cryptanalytic attack against a standard algorithm. Before the Japanese attack on Pearl Harbor, in December 1941, both the U.S. Army and Navy were devoting most of their slim cryptanalytic resources to solving Japanese diplomatic ciphers, notably the foreign ministry's PURPLE machine. Second, Colossus was not a general-purpose machine, being designed for a specific cryptanalytic task involving counting and Boolean operations. cryptanalytical /ˌkrɪptanəˈlɪtɪk(ə)l/ adjective ... The link between both cryptanalytical and nuclear design applications and high-performance computing goes back to the very first computers. The predominant emphasis of cryptanalytical work was directed towards the solution of encrypted Japanese traffic. The cryptanalytical approach is also heavily determined by the structure of a block cipher. Origin 1920s: from crypto- + analysis.
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