出典:Wiktionary
出典:『Wiktionary』 (2025/11/03 21:52 UTC 版)
cryptanalysis (countable and uncountable, plural cryptanalyses)
出典:Wikipedia
出典:『Wikipedia』 (2011/07/17 07:11 UTC 版)
Cryptanalysis (from the Greek kryptós, "hidden", and analýein, "to loosen" or "to untie") is the study of methods for obtaining the meaning of encrypted information, without access to the secret information that is normally required to do so. Typically, this involves knowing how the system works and finding a secret key. In non-technical language, this is the practice of codebreaking or cracking the code, although these phrases also have a specialised technical meaning (see code).