https://www.caokailun.xyz/tags/%E5%90%8C%E6%80%81%E5%8A%A0%E5%AF%86/ Recent content in 同态加密 on Cao Kailun Hugo zh-cn Wed, 10 Jun 2026 13:12:42 +0800 https://www.caokailun.xyz/posts/2026-06-10-ckks-homomorphic-encryption/ Wed, 10 Jun 2026 13:12:42 +0800 https://www.caokailun.xyz/posts/2026-06-10-ckks-homomorphic-encryption/ <p>全同态加密（FHE）被誉为“密码学的圣杯”。不同于 BGV 或 BFV 方案死磕<strong>精确整数计算</strong>，CKKS 方案另辟蹊径，完美支持了<strong>近似浮点数运算</strong>。这一特性让它在隐私保护机器学习（PPML）领域大放异彩。本文将带你扒开公式的外衣，从数学基础到算法全流程，彻底搞懂 CKKS 的底层逻辑。</p>