V2EX indistinguishability

Indistinguishability

释义 Definition

不可区分性;难以辨别性:指两个或多个对象在某种观察、测试或信息条件下无法被可靠地区分的性质。常见于密码学、统计学、量子物理等语境。(在日常语境中也可泛指“几乎分不出来”的状态。)

发音 Pronunciation (IPA)

/ndstwblti/

例句 Examples

The indistinguishability of the two twins fooled everyone.
这对双胞胎的不可区分性骗过了所有人。

In modern cryptography, indistinguishability ensures that an attacker cannot tell which message was encrypted, even after observing many ciphertexts.
在现代密码学中,不可区分性保证攻击者即使观察了大量密文,也无法判断到底加密的是哪一条消息。

词源 Etymology

in-(否定前缀,“不”)+ distinguish(区分、辨别)+ -able(可……的)+ -ity(名词后缀,表示性质/状态)构成,字面意思是“不能被区分的这种性质”。

相关词 Related Words

文学与著作中的用例 Literary / Notable Works

  • Introduction to Modern Cryptography(Jonathan Katz, Yehuda Lindell)核心概念之一:基于“不可区分性”的安全定义(如 IND-CPA 等)。
  • Quantum Computation and Quantum Information(Michael A. Nielsen, Isaac L. Chuang)讨论量子态与测量时会涉及“不可区分/不可判别”的表述与思想。
  • The Feynman Lectures on Physics(Richard P. Feynman 等)在讨论粒子“不可区分性”(identical/indistinguishable particles)相关主题时常出现同类术语与概念。
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