V2EX cryptography

Cryptography

Definition / 定义

Cryptography 指“密码学;加密技术”:研究如何用数学与算法把信息加密解密,以实现保密性、完整性、身份认证与不可否认性等安全目标。(日常也常泛指“加密/解密的方法与实践”。)

Pronunciation / 发音(IPA)

/krptrfi/

Examples / 例句

Cryptography keeps my messages private.
密码学让我的消息保持私密。

Modern cryptography relies on mathematical proofs and carefully designed protocols to protect data in transit and at rest.
现代密码学依靠数学证明和精心设计的协议来保护传输中与存储中的数据。

Etymology / 词源

来自希腊语:kryptós(κρυπτ,“隐藏的”)+ -graphy(-γραφα,“书写/记录/描述”),字面含义是“隐藏的书写”。早期可指用暗号写作与传递信息,后来发展为以数学为基础的信息安全学科。

Related Words / 相关词汇

Notable Works / 文学与著作中的用例

  • Cryptonomicon(Neal Stephenson):以密码学、二战破译与信息时代安全为核心主题的长篇小说。
  • The Code Book(Simon Singh):通俗密码学史与原理著作,频繁使用“cryptography”等术语。
  • Applied Cryptography(Bruce Schneier):经典技术书,系统讨论现代密码学的算法与协议。
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