{"id":335,"date":"2025-11-12T14:33:05","date_gmt":"2025-11-12T06:33:05","guid":{"rendered":"https:\/\/ziyuan.work\/?p=335"},"modified":"2025-11-12T14:57:56","modified_gmt":"2025-11-12T06:57:56","slug":"crccylic-redundancy-check%e6%95%b0%e6%8d%ae%e5%b8%a7%e6%a0%a1%e9%aa%8c","status":"publish","type":"post","link":"https:\/\/ziyuan.work\/?p=335","title":{"rendered":"CRC(cylic redundancy check)\u6570\u636e\u5e27\u6821\u9a8c"},"content":{"rendered":"\n<p>crc\u7528\u4e8e\u6821\u9a8c<strong>\u6570\u636e\u4f20\u8f93<\/strong>\u8fc7\u7a0b\u7684\u5b8c\u6574\u6027\uff0ccrc\u7801\u901a\u5e38\u4f4d\u4e8e\u6570\u636e\u5e27\u5c3e\u90e8\uff0c\u4e0e\u6570\u636e\u5e27\u540c\u65f6\u4f20\u8f93\u3002<\/p>\n\n\n\n<p>\u8ba1\u7b97\u6570\u636e\u5e27\u7684crc\u7801\u4e0e\u63a5\u6536\u7684crc\u7801\u6765\u786e\u8ba4\u6570\u636e\u5b8c\u6574\u6027\uff1a<\/p>\n\n\n\n<p>\u521d\u59cb\u5316\u4e00\u4e2a\u5bc4\u5b58\u5668\u4e3a0xFFFF\uff0c\u9010\u6b65\u4e0e\u6bcf\u4e2a\u6570\u636e\u5e27\u8fdb\u884c\u5f02\u6216\u64cd\u4f5c\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"736\" height=\"567\" src=\"https:\/\/ziyuan.work\/wp-content\/uploads\/2025\/11\/crc-1.png\" alt=\"\" class=\"wp-image-342\" srcset=\"https:\/\/ziyuan.work\/wp-content\/uploads\/2025\/11\/crc-1.png 736w, https:\/\/ziyuan.work\/wp-content\/uploads\/2025\/11\/crc-1-300x231.png 300w\" sizes=\"auto, (max-width: 736px) 100vw, 736px\" \/><\/figure>\n\n\n\n<pre class=\"wp-block-code\"><code># golang\nfunc CalculateCRC(data &#91;]byte) uint16 {\n\tcrc := uint16(0xFFFF)\n\tfor _, b := range data {\n\t\tcrc ^= uint16(b)\n\t\tfor i := 0; i &lt; 8; i++ {\n\t\t\tif crc&amp;0x0001 != 0 {\n\t\t\t\tcrc &gt;&gt;= 1\n\t\t\t\tcrc ^= 0xA001\n\t\t\t} else {\n\t\t\t\tcrc &gt;&gt;= 1\n\t\t\t}\n\t\t}\n\t}\n\treturn crc\n}<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"<p>crc\u7528\u4e8e\u6821\u9a8c\u6570\u636e\u4f20\u8f93\u8fc7\u7a0b\u7684\u5b8c\u6574\u6027\uff0ccrc\u7801\u901a\u5e38\u4f4d\u4e8e\u6570\u636e\u5e27\u5c3e\u90e8\uff0c\u4e0e\u6570\u636e\u5e27\u540c\u65f6\u4f20\u8f93\u3002 \u8ba1\u7b97\u6570\u636e\u5e27\u7684crc\u7801\u4e0e\u63a5\u6536 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[5],"tags":[],"class_list":["post-335","post","type-post","status-publish","format-standard","hentry","category-knowledge"],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/ziyuan.work\/index.php?rest_route=\/wp\/v2\/posts\/335","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ziyuan.work\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ziyuan.work\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ziyuan.work\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/ziyuan.work\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=335"}],"version-history":[{"count":6,"href":"https:\/\/ziyuan.work\/index.php?rest_route=\/wp\/v2\/posts\/335\/revisions"}],"predecessor-version":[{"id":343,"href":"https:\/\/ziyuan.work\/index.php?rest_route=\/wp\/v2\/posts\/335\/revisions\/343"}],"wp:attachment":[{"href":"https:\/\/ziyuan.work\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=335"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ziyuan.work\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=335"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ziyuan.work\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=335"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}