{"version":"https://jsonfeed.org/version/1.1","title":"苏迟但到的主页","home_page_url":"https://kexohproject.pages.dev","feed_url":"https://kexohproject.pages.dev/json/","description":"<p>你好，欢迎访问个人主页！</p><p>擅长密码学，安全分析，数字水印等技术。</p><p>你可以联系我通过:findmykexin@gmail.com或者知乎私信。</p><p>我的知乎链接：<a href=\"https://www.zhihu.com/people/su-chi-dan-dao\" rel=\"noopener noreferrer\" target=\"_blank\">苏迟但到 - 知乎 (zhihu.com)</a></p><p>我的github链接：<a href=\"https://github.com/kexinoh\" rel=\"noopener noreferrer\" target=\"_blank\">kexinoh</a></p>","icon":"https://kexohcdn.gptapi.cyou/kexohproject/production/images/channel-2e54d141ee195646ca12a9d16507a908.jpg","favicon":"https://kexohcdn.gptapi.cyou/kexohproject/production/images/favicon-340a2925d02a0386f3b954a032834917.jpg","authors":[{"name":"苏迟但到"}],"language":"zh-cn","items":[{"id":"f1zXM8WFbQ-","title":"PGP算法为什么先压缩再加密？","content_html":"<p data-pid=\"rmn4TbQp\">另外一个回答显然回答错误，这要从压缩的原理说起，本质是哈夫曼编码，来自于自然信息的不均衡。如果先加密后压缩你就会发现一个什么问题。（指大多数情况，使用了非ECB加密方法）</p><p data-pid=\"VtpLrJQO\">你压缩后体积压根不会变化，因为一旦加密后文件就变成了均匀随机分布的01字符串，不再有进一步压缩的可能性了，所以自然要先压缩后加密。</p><p data-pid=\"PejMdlRx\">课后提问：</p><p data-pid=\"AWEz0nAk\">为什么ECB加密依然可能会被压缩？</p><p data-pid=\"Jz7a9xfs\">这种加密算法的性质被称为什么？</p>","content_text":"另外一个回答显然回答错误，这要从压缩的原理说起，本质是哈夫曼编码，来自于自然信息的不均衡。如果先加密后压缩你就会发现一个什么问题。（指大多数情况，使用了非ECB加密方法）\n\n你压缩后体积压根不会变化，因为一旦加密后文件就变成了均匀随机分布的01字符串，不再有进一步压缩的可能性了，所以自然要先压缩后加密。\n\n课后提问：\n\n为什么ECB加密依然可能会被压缩？\n\n这种加密算法的性质被称为什么？","date_published":"2022-01-22T08:44:21.000Z","_microfeed":{"web_url":"https://kexohproject.pages.dev/i/pgp-f1zXM8WFbQ-/","json_url":"https://kexohproject.pages.dev/i/f1zXM8WFbQ-/json/","rss_url":"https://kexohproject.pages.dev/i/f1zXM8WFbQ-/rss/","guid":"f1zXM8WFbQ-","status":"published","itunes:title":"New Article Title for iTunes","date_published_short":"Sat Jan 22 2022","date_published_ms":1642841061000}}],"_microfeed":{"microfeed_version":"0.1.2","base_url":"https://kexohproject.pages.dev","categories":[{"name":"Education","categories":[{"name":"Language Learning"}]},{"name":"Technology"}],"subscribe_methods":[{"name":"RSS","type":"rss","url":"https://kexohproject.pages.dev/rss/","image":"https://kexohproject.pages.dev/assets/brands/subscribe/rss.png","enabled":true,"editable":false,"id":"4KlfbtkEfzy"},{"name":"JSON","type":"json","url":"https://kexohproject.pages.dev/json/","image":"https://kexohproject.pages.dev/assets/brands/subscribe/json.png","enabled":true,"editable":false,"id":"DVFm7TYiNSq"}],"description_text":"你好，欢迎访问个人主页！\n\n擅长密码学，安全分析，数字水印等技术。\n\n你可以联系我通过:findmykexin@gmail.com或者知乎私信。\n\n我的知乎链接：苏迟但到 - 知乎 (zhihu.com)\n\n我的github链接：kexinoh","copyright":"©2024","itunes:type":"episodic","items_sort_order":"newest_first"}}