{"html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fblog.hamayanhamayan.com%2Fentry%2F2025%2F11%2F26%2F234346\" title=\"CTF\u306eCrypto\u306b\u304a\u3051\u308b\u7b26\u53f7\u307e\u3068\u3081 [\u30a8\u30f3\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0, CRC, \u30ea\u30fc\u30c9\u30fb\u30bd\u30ed\u30e2\u30f3] - \u306f\u307e\u3084\u3093\u306f\u307e\u3084\u3093\u306f\u307e\u3084\u3093\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","height":"190","published":"2025-11-26 23:43:46","blog_url":"https://blog.hamayanhamayan.com/","categories":["Security"],"type":"rich","author_url":"https://blog.hatena.ne.jp/hamayanhamayan/","url":"https://blog.hamayanhamayan.com/entry/2025/11/26/234346","author_name":"hamayanhamayan","image_url":null,"provider_url":"https://hatena.blog","version":"1.0","provider_name":"Hatena Blog","blog_title":"\u306f\u307e\u3084\u3093\u306f\u307e\u3084\u3093\u306f\u307e\u3084\u3093","title":"CTF\u306eCrypto\u306b\u304a\u3051\u308b\u7b26\u53f7\u307e\u3068\u3081 [\u30a8\u30f3\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0, CRC, \u30ea\u30fc\u30c9\u30fb\u30bd\u30ed\u30e2\u30f3]","description":"CTF\u306b\u304a\u3051\u308bCrypto\u5165\u9580\u3068\u307e\u3068\u3081\u306e1\u3064\u3067\u3059\u3002 \u7b26\u53f7\u5316 CRC: \u5de1\u56de\u5197\u9577\u691c\u67fb RS\u7b26\u53f7: \u30ea\u30fc\u30c9\u30fb\u30bd\u30ed\u30e2\u30f3\u7b26\u53f7 \u7b26\u53f7\u6697\u53f7 \u7b26\u53f7\u5316 \u7b26\u53f7\u5316 https://www.jstage.jst.go.jp/article/essfr/5/1/5_1_28/_pdf \u7dda\u5f62\u7b26\u53f7 cG = w\uff1a[c1 c2]\u306e\u3088\u3046\u306a\u5e73\u6587c\u306b\u3044\u3044\u611f\u3058\u306e\u884c\u5217G\u3092\u304b\u3051\u3066\u3001\u5197\u9577\u5316\u3055\u308c\u305f\u30e1\u30c3\u30bb\u30fc\u30b8 w\u3092\u4f5c\u308b \u5197\u9577\u5316\u3055\u308c\u3066\u3044\u308b\u306e\u3067\u591a\u5c11\u6b20\u640d\u3057\u3066\u3082\u5927\u4e08\u592b\u3002\u3064\u307e\u308a\u3001cG = w + e\u3068\u306a\u3063\u3066\u3044\u3066\u3001e\u304c\u672a\u77e5\u3067\u3042\u3063\u3066\u3082w+e\u3068G\u304b\u3089c\u3092\u5fa9\u5143\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u308b \u901a\u4fe1\u8def\u7b26\u53f7\u5316 \u8aa4\u308a\u691c\u51fa\u7b26\u53f7 CRC: \u5de1\u56de\u5197\u9577\u691c\u67fb \u8aa4\u308a\u8a02\u6b63\u7b26\u53f7 \u5de1\u56de\u7b26\u53f7 BCH\u2026","width":"100%"}