V2EX ecdh

ECDH

释义 Definition

ECDHElliptic Curve DiffieHellman 的缩写,指一种基于椭圆曲线密码学的密钥交换方法:通信双方在不直接传输“共享密钥”的情况下,通过各自的私钥与对方的公钥计算出同一个共享秘密(shared secret),常用于 TLS/HTTPS 等安全通信中。
(它是 DiffieHellman 密钥交换在椭圆曲线上的实现形式。)

发音 Pronunciation (IPA)

/i si di et/

例句 Examples

We use ECDH to agree on a shared key.
我们使用 ECDH 来协商一个共享密钥。

In modern TLS, ECDH helps two parties establish a secret over an insecure network without revealing their private keys.
在现代 TLS 中,ECDH 能帮助双方在不安全的网络上建立共享秘密,同时不暴露各自的私钥。

词源 Etymology

ECDH 由首字母组成:EC = Elliptic Curve(椭圆曲线),DH = DiffieHellman(以提出该密钥交换思想的研究者命名)。其核心思想源自经典 DH 交换,但把运算结构从“模整数”转移到“椭圆曲线群”,以在较短密钥长度下获得较强安全性。

相关词 Related Words

文献与作品 Literary / Notable Works

  • RFC 7748: Elliptic Curves for Security(涵盖 X25519 等常用 ECDH 方案)
  • RFC 4492: Elliptic Curve Cryptography (ECC) Cipher Suites for TLS(TLS 中 ECC/ECDH 套件)
  • NIST SP 800-56A: Recommendation for Pair-Wise Key Establishment Schemes Using Discrete Logarithm Cryptography(包含基于 ECC 的密钥建立建议)
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