https://techunder.tech/docs/20-cryptography/ Recent content in 加密算法 on Techunder Hugo zh-CN https://techunder.tech/docs/20-cryptography/01-modern-cryptography/ Mon, 01 Jan 0001 00:00:00 +0000 https://techunder.tech/docs/20-cryptography/01-modern-cryptography/ <!-- Copyright © 2026 Techunder (Guanhua Liu) | All Rights Reserved | https://techunder.tech | Email: techunder@163.com --> <div class="page-title">现代加密算法</div> <div class="page-info"> <span class="organized-tag">整理</span> 发布时间：2026-07-14 | 更新时间：2026-07-14 </div> <link rel="stylesheet" href="https://techunder.tech/katex/katex.min.css" /><script defer src="https://techunder.tech/katex/katex.min.js"></script><script defer src="https://techunder.tech/katex/auto-render.min.js" onload="renderMathInElement(document.body, {&#34;delimiters&#34;:[{&#34;left&#34;:&#34;$&#34;,&#34;right&#34;:&#34;$&#34;,&#34;display&#34;:false},{&#34;left&#34;:&#34;$$&#34;,&#34;right&#34;:&#34;$$&#34;,&#34;display&#34;:true},{&#34;left&#34;:&#34;\\[&#34;,&#34;right&#34;:&#34;\\]&#34;,&#34;display&#34;:true}]});"></script> <h1 id="基本概率">基本概率<a class="anchor" href="#%e5%9f%ba%e6%9c%ac%e6%a6%82%e7%8e%87">#</a></h1> <ul> <li><strong>加密</strong>：公钥锁，私钥开。</li> <li><strong>签名</strong>：私钥锁，公钥开。</li> <li><strong>密钥交换</strong>：让两个人在完全不安全的网络上，不传输密钥，却能算出同一把只有他俩知道的对称密钥。</li> </ul> <h1 id="常见算法">常见算法<a class="anchor" href="#%e5%b8%b8%e8%a7%81%e7%ae%97%e6%b3%95">#</a></h1> <ul> <li><strong>加密</strong>：RSA</li> <li><strong>签名</strong>：RSA，ECDSA (secp256k1) ，Ed25519 (Edwards25519)</li> <li><strong>密钥交换</strong>：DH，ECDH (secp256k1) ，X25519 (Curve25519)</li> </ul> <blockquote class='book-hint '> <p>RSA = Rivest Shamir Adleman<br> DSA = Digital Signature Algorithm<br> Ed25519 = Edwards 2^255 - 19</p> </blockquote><h1 id="椭圆曲线">椭圆曲线<a class="anchor" href="#%e6%a4%ad%e5%9c%86%e6%9b%b2%e7%ba%bf">#</a></h1> <h2 id="secp256k1">secp256k1<a class="anchor" href="#secp256k1">#</a></h2> <p><strong>secp256k1</strong> 是通过椭圆曲线生成的非对称密钥</p> <ul> <li>私钥：一个随机数</li> <li>公钥：由私钥通过 secp256k1 算法算出</li> </ul> <blockquote class='book-hint '> <p>secp256k1: Secure-Prime-256bit-Koblitz-1，Koblitz（人名）族里的第 1 条曲线<br> secp256r1: r = Random</p>