| 词汇 | cryptanalyst |
| 释义 | cryptanalyst noun[ C ] uk /krɪptˈæn.ə.lɪst/ us /krɪptˈæn.ə.lɪst/ someone who studies secret code systems in order to obtain secret information: 密码分析员 The success of British cryptanalysts during the Second World War in cracking German codes is well known.英国密码分析员在第二次世界大战期间破解德国密码方面的成功是众所周知的。 He was assigned as a cryptanalyst to the British code-breaking team at Bletchley.他被分配到位于布莱切利的英国密码破译小组担任密码分析员。 See cryptanalysis He was a cryptanalyst who surfed the government's classified intranet for sensitive information. They were sent to Germany to interrogate German cryptanalysts and to examine equipment used in developing codes. The more samples of ciphertext that are available, the more information the cryptanalyst has to work with in trying to break a key. Signs, signals and symbols acid test backward slash backwards slash beacon breadcrumb hieroglyphically iconographic iconographically iconography lagging indicator obelus octothorpe paraph penalty flag pilcrow pointer prompt the all-clear token torch Examples of cryptanalystcryptanalyst Finally, in a chosen-ciphertext attack, the cryptanalyst may be able to "choose" ciphertexts and learn their corresponding plaintexts. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Once every letter in the key is known, the cryptanalyst can simply decrypt the ciphertext and reveal the plaintext. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Once the length of the keyword is discovered, the cryptanalyst lines up the ciphertext in "n" columns, where "n" is the length of the keyword. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. A cryptanalyst would prepare a crib for comparison with the ciphertext. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. In refining down the set of stops for further examination, the cryptanalyst would eliminate stops that contained such a contradiction. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The cryptanalyst hypothesised one plugboard interconnection for the bombe to test. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. They settled on one, and agreed to write up a complete design and have it reviewed by another cryptanalyst by the following day. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. In classical cryptography a "null" is intended to confuse the cryptanalyst. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The message settings should never have been re-used, but on occasion they were, providing a depth, which could be utilised by a cryptanalyst. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Once a suitable crib had been decided upon, the cryptanalyst would produce a "menu" for wiring up the bombe to test the crib against the ciphertext. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Provided the message is of reasonable length (see below), the cryptanalyst can deduce the probable meaning of the most common symbols by analyzing the frequency distribution of the ciphertextfrequency analysis. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Although frequency analysis is a powerful and general technique against many ciphers, encryption has still often been effective in practice, as many a would-be cryptanalyst was unaware of the technique. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The primary use of padding with classical ciphers is to prevent the cryptanalyst from using that predictability to find cribs that aid in breaking the encryption. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The basic principle of this sort of enciphering machine is that it should deliver a very long stream of transformations that are difficult for a cryptanalyst to predict. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Using these relationships, a cryptanalyst could reason from one to another and, potentially, derive a logical contradiction, in which case the rotor setting under consideration could be ruled out. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. See all examples of cryptanalyst These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. |
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