{"provider_url":"https://hatena.blog","blog_url":"https://m5453.hatenablog.com/","blog_title":"Learning cyber security by playing and enjoying CTFs","description":"1. \u306f\u3058\u3081\u306b 2025/1/26 12:00 JST \uff5e18:00 \u306b\u958b\u50ac\u3055\u308c\u305f\u300cAlpacaHack Round9 (Crypto)\u300d\u53c2\u52a0\u3057\u307e\u3057\u305f\u3002\u6570\u6642\u9593\u3068\u306f\u3044\u3048\u3001CTF \u306b\u307e\u3068\u307e\u3063\u305f\u6642\u9593\u3092\u6295\u5165\u3067\u304d\u305f\u306e\u306f\u4e45\u3057\u3076\u308a\u3067\u3057\u305f*1\u30022 \u5b8c\u3067 6 \u4f4d\u3002 \u6700\u521d\u306e 1 \u554f\u3067\u8272\u3005\u8ff7\u8d70\u3057\u3001\u6642\u9593\u3092\u4f7f\u3044\u904e\u304e\u3066\u3057\u307e\u3063\u305f\u70b9\u306f\u5927\u3044\u306a\u308b\u53cd\u7701\u70b9\u3067\u3057\u305f\u3002 2. Writeup AlpacaHack\u306e\u904e\u53bb\u554f\u306f\u5e38\u8a2d\u30b3\u30f3\u30c6\u30f3\u30c4\u3068\u306a\u308b\u305f\u3081\u3001\u30d5\u30e9\u30b0\u306e\u8a18\u8f09\u306f\u7701\u7565\u3057\u307e\u3059\u3002 2.1. RSAMPC (16 solves) \u8a2d\u554f I calculated the RSA public key using multi-party comput\u2026","type":"rich","width":"100%","author_url":"https://blog.hatena.ne.jp/M5453/","version":"1.0","published":"2025-01-26 21:27:54","title":"AlpacaHack Round 9 (Crypto) Writeup","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fm5453.hatenablog.com%2Fentry%2F2025%2F01%2F26%2F212754\" title=\"AlpacaHack Round 9 (Crypto) Writeup - Learning cyber security by playing and enjoying CTFs\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","url":"https://m5453.hatenablog.com/entry/2025/01/26/212754","height":"190","categories":[],"provider_name":"Hatena Blog","image_url":null,"author_name":"M5453"}