{"id":476216,"date":"2023-08-09T07:26:52","date_gmt":"2023-08-09T07:26:52","guid":{"rendered":""},"modified":"2023-09-05T11:12:16","modified_gmt":"2023-09-05T11:12:16","slug":"check-digit","status":"publish","type":"wiki","link":"https:\/\/oneproxy.pro\/cn\/wiki\/check-digit\/","title":{"rendered":"\u68c0\u67e5\u6570\u5b57"},"content":{"rendered":"<h2>\u4ecb\u7ecd<\/h2>\n<p>\u6821\u9a8c\u4f4d\uff0c\u4e5f\u79f0\u4e3a\u6821\u9a8c\u548c\u4f4d\u6216\u9a8c\u8bc1\u4f4d\uff0c\u662f\u7531\u4e00\u7cfb\u5217\u6570\u636e\u4f4d\u8ba1\u7b97\u5f97\u51fa\u7684\u6570\u503c\uff0c\u7528\u4e8e\u9a8c\u8bc1\u6570\u636e\u7684\u51c6\u786e\u6027\u5e76\u68c0\u6d4b\u4f20\u8f93\u6216\u5b58\u50a8\u8fc7\u7a0b\u4e2d\u7684\u9519\u8bef\u3002\u5b83\u5e7f\u6cdb\u5e94\u7528\u4e8e\u5404\u4e2a\u9886\u57df\uff0c\u5305\u62ec\u7535\u4fe1\u3001\u91d1\u878d\u3001\u7269\u6d41\u548c\u8ba1\u7b97\u673a\u79d1\u5b66\u3002\u6821\u9a8c\u4f4d\u7684\u5b9e\u65bd\u6709\u52a9\u4e8e\u786e\u4fdd\u6570\u636e\u5b8c\u6574\u6027\u5e76\u589e\u5f3a\u6570\u636e\u5904\u7406\u7cfb\u7edf\u7684\u53ef\u9760\u6027\u3002<\/p>\n<h2>\u5386\u53f2\u4e0e\u8d77\u6e90<\/h2>\n<p>\u6821\u9a8c\u4f4d\u7684\u6982\u5ff5\u53ef\u4ee5\u8ffd\u6eaf\u5230 20 \u4e16\u7eaa\u521d\uff0c\u5f53\u65f6 Frank ASP Gray \u5f00\u53d1\u4e86\u4e00\u79cd\u901a\u8fc7\u5728\u672b\u5c3e\u6dfb\u52a0\u63a7\u5236\u5b57\u7b26\u6765\u68c0\u6d4b\u7535\u62a5\u6d88\u606f\u4e2d\u9519\u8bef\u7684\u65b9\u6cd5\u3002\u8fd9\u4e2a\u63a7\u5236\u5b57\u7b26\u540e\u6765\u88ab\u79f0\u4e3a\u6821\u9a8c\u4f4d\u3002\u7136\u800c\uff0c\u968f\u7740 20 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IMEI \u53f7\u3002<\/td>\n<\/tr>\n<tr>\n<td>Verhoeff\u7b97\u6cd5<\/td>\n<td>\u5bf9\u4e8e\u9632\u6b62\u8f6c\u5f55\u9519\u8bef\u7279\u522b\u6709\u6548\u3002<\/td>\n<\/tr>\n<tr>\n<td>\u6a21\u657011<\/td>\n<td>\u5e38\u7528\u4e8e\u5177\u6709\u6570\u503c\u6570\u636e\u7684\u5e94\u7528\u7a0b\u5e8f\u3002<\/td>\n<\/tr>\n<tr>\n<td>\u56fd\u9645\u6807\u51c6\u4e66\u53f7<\/td>\n<td>\u7279\u5b9a\u4e8e\u56fd\u9645\u6807\u51c6\u4e66\u53f7\u3002<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>\u4f7f\u7528\u6821\u9a8c\u4f4d\u5e76\u89e3\u51b3\u95ee\u9898<\/h2>\n<p>\u6821\u9a8c\u4f4d\u9002\u7528\u4e8e\u5404\u79cd\u573a\u666f\uff0c\u4f8b\u5982\uff1a<\/p>\n<ol>\n<li>\n<p><strong>\u4fe1\u7528\u5361\u9a8c\u8bc1<\/strong>\uff1aLuhn\u7b97\u6cd5\u4fdd\u8bc1\u4fe1\u7528\u5361\u53f7\u7684\u6709\u6548\u6027\uff0c\u964d\u4f4e\u7f51\u4e0a\u4ea4\u6613\u8fc7\u7a0b\u4e2d\u7684\u6b3a\u8bc8\u98ce\u9669\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u6761\u5f62\u7801\u548c\u4ea7\u54c1\u4ee3\u7801<\/strong>\uff1a\u68c0\u67e5\u6570\u5b57\u9a8c\u8bc1\u96f6\u552e\u5546\u54c1\u4e0a\u7684\u6761\u5f62\u7801\u548c\u4ea7\u54c1\u4ee3\u7801\uff0c\u6700\u5927\u9650\u5ea6\u5730\u51cf\u5c11\u626b\u63cf\u9519\u8bef\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u8eab\u4efd\u8bc1\u53f7\u7801<\/strong>\uff1a\u5728\u8eab\u4efd\u8bc6\u522b\u7cfb\u7edf\u4e2d\uff0c\u6821\u9a8c\u4f4d\u53ef\u9a8c\u8bc1\u793e\u4f1a\u5b89\u5168\u53f7\u7801\u6216\u5458\u5de5 ID \u7b49\u6570\u5b57\u3002<\/p>\n<\/li>\n<\/ol>\n<p>\u5c3d\u7ba1\u6821\u9a8c\u4f4d\u5f88\u6709\u6548\uff0c\u4f46\u5b83\u4e5f\u53ef\u80fd\u4f1a\u9047\u5230\u95ee\u9898\uff0c\u5305\u62ec\uff1a<\/p>\n<ul>\n<li>\n<p><strong>\u78b0\u649e<\/strong>\uff1a\u67d0\u4e9b\u7b97\u6cd5\u53ef\u80fd\u4f1a\u5bf9\u4e0d\u540c\u7684\u8f93\u5165\u6570\u636e\u4ea7\u751f\u76f8\u540c\u7684\u6821\u9a8c\u4f4d\uff0c\u4ece\u800c\u5bfc\u81f4\u8bef\u62a5\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u6821\u9a8c\u4f4d\u4fee\u6539<\/strong>\uff1a\u6076\u610f\u884c\u4e3a\u8005\u53ef\u80fd\u4f1a\u7be1\u6539\u6570\u636e\u5e76\u76f8\u5e94\u66f4\u65b0\u6821\u9a8c\u4f4d\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u4e0d\u540c\u957f\u5ea6<\/strong>\uff1a\u5f53\u5904\u7406\u4e0d\u540c\u957f\u5ea6\u7684\u6570\u636e\u65f6\uff0c\u751f\u6210\u53ef\u9760\u7684\u6821\u9a8c\u4f4d\u53d8\u5f97\u5177\u6709\u6311\u6218\u6027\u3002<\/p>\n<\/li>\n<\/ul>\n<p>\u4e3a\u4e86\u89e3\u51b3\u8fd9\u4e9b\u95ee\u9898\uff0c\u91c7\u7528\u5f3a\u5927\u7684\u6821\u9a8c\u4f4d\u7b97\u6cd5\u3001\u5b9e\u65bd\u9002\u5f53\u7684\u5b89\u5168\u63aa\u65bd\u5e76\u786e\u4fdd\u6807\u51c6\u5316\u7684\u6570\u636e\u683c\u5f0f\u53ef\u4ee5\u51cf\u8f7b\u6f5c\u5728\u7684\u95ee\u9898\u3002<\/p>\n<h2>\u7279\u70b9\u4e0e\u6bd4\u8f83<\/h2>\n<table>\n<thead>\n<tr>\n<th>\u7279\u5f81<\/th>\n<th>\u68c0\u67e5\u6570\u5b57<\/th>\n<th>CRC\uff08\u5faa\u73af\u5197\u4f59\u6821\u9a8c\uff09<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u76ee\u7684<\/td>\n<td>\u9519\u8bef\u68c0\u6d4b\u548c\u9a8c\u8bc1<\/td>\n<td>\u9519\u8bef\u68c0\u6d4b<\/td>\n<\/tr>\n<tr>\n<td>\u590d\u6742<\/td>\n<td>\u4e00\u822c\u7b80\u5355\u7684\u7b97\u6cd5<\/td>\n<td>\u66f4\u590d\u6742\u7684\u7b97\u6cd5<\/td>\n<\/tr>\n<tr>\n<td>\u78b0\u649e<\/td>\n<td>\u6709\u53ef\u80fd\uff0c\u4f46\u53ef\u80fd\u6027\u4e0d\u5927<\/td>\n<td>\u6781\u4e0d\u53ef\u80fd<\/td>\n<\/tr>\n<tr>\n<td>\u6570\u636e\u5904\u7406<\/td>\n<td>\u5355\u904d\u7b97\u6cd5<\/td>\n<td>\u591a\u904d\u7b97\u6cd5<\/td>\n<\/tr>\n<tr>\n<td>\u5e94\u7528<\/td>\n<td>\u5e7f\u6cdb\u5e94\u7528\u4e8e\u5404\u4e2a\u884c\u4e1a<\/td>\n<td>\u7f51\u7edc\u901a\u8baf\u4e2d\u5e38\u89c1<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>\u672a\u6765\u524d\u666f\u548c\u6280\u672f<\/h2>\n<p>\u6821\u9a8c\u4f4d\u6280\u672f\u7684\u672a\u6765\u5728\u4e8e\u8fdb\u4e00\u6b65\u589e\u5f3a\u5176\u9c81\u68d2\u6027\u3001\u9002\u5e94\u6027\u548c\u5e94\u7528\u8303\u56f4\u3002\u968f\u7740\u6570\u636e\u5904\u7406\u548c\u4eba\u5de5\u667a\u80fd\u7684\u8fdb\u6b65\uff0c\u53ef\u4ee5\u8bbe\u8ba1\u66f4\u667a\u80fd\u7684\u7b97\u6cd5\u6765\u68c0\u6d4b\u66f4\u590d\u6742\u7684\u9519\u8bef\u548c\u6a21\u5f0f\u3002\u6b64\u5916\uff0c\u5c06\u533a\u5757\u94fe\u6280\u672f\u4e0e\u6821\u9a8c\u4f4d\u76f8\u96c6\u6210\u53ef\u4ee5\u521b\u5efa\u53bb\u4e2d\u5fc3\u5316\u4e14\u9632\u7be1\u6539\u7684\u6570\u636e\u9a8c\u8bc1\u7cfb\u7edf\u3002<\/p>\n<h2>\u6821\u9a8c\u4f4d\u548c\u4ee3\u7406\u670d\u52a1\u5668<\/h2>\n<p>\u4ee3\u7406\u670d\u52a1\u5668\uff08\u4f8b\u5982 OneProxy (oneproxy.pro) \u63d0\u4f9b\u7684\u4ee3\u7406\u670d\u52a1\u5668\uff09\u5728\u4e92\u8054\u7f51\u9690\u79c1\u548c\u5b89\u5168\u65b9\u9762\u53d1\u6325\u7740\u91cd\u8981\u4f5c\u7528\u3002\u867d\u7136\u4ee3\u7406\u670d\u52a1\u5668\u4e3b\u8981\u4e13\u6ce8\u4e8e\u901a\u8fc7\u4e2d\u95f4\u670d\u52a1\u5668\u8def\u7531\u548c\u8f6c\u53d1\u4e92\u8054\u7f51\u6d41\u91cf\uff0c\u4f46\u6821\u9a8c\u4f4d\u7684\u4f7f\u7528\u53ef\u4ee5\u8865\u5145\u5176\u5b89\u5168\u63aa\u65bd\u3002\u5728\u901a\u8fc7\u4ee3\u7406\u670d\u52a1\u5668\u4f20\u8f93\u7684\u6570\u636e\u4e2d\u96c6\u6210\u6821\u9a8c\u4f4d\u53ef\u4ee5\u6dfb\u52a0\u989d\u5916\u7684\u9a8c\u8bc1\u5c42\uff0c\u786e\u4fdd\u6570\u636e\u5728\u4f20\u8f93\u8fc7\u7a0b\u4e2d\u4fdd\u6301\u51c6\u786e\u4e14\u4e0d\u53d8\u3002<\/p>\n<h2>\u76f8\u5173\u94fe\u63a5<\/h2>\n<p>\u6709\u5173\u6821\u9a8c\u4f4d\u7684\u66f4\u591a\u4fe1\u606f\uff0c\u60a8\u53ef\u4ee5\u6d4f\u89c8\u4ee5\u4e0b\u8d44\u6e90\uff1a<\/p>\n<ul>\n<li><a href=\"https:\/\/en.wikipedia.org\/wiki\/Check_digit\" target=\"_new\" rel=\"noopener nofollow\">\u7ef4\u57fa\u767e\u79d1 \u2013 \u6821\u9a8c\u4f4d<\/a><\/li>\n<li><a href=\"https:\/\/en.wikipedia.org\/wiki\/Luhn_algorithm\" target=\"_new\" rel=\"noopener nofollow\">\u5362\u6069\u7b97\u6cd5<\/a><\/li>\n<li><a href=\"https:\/\/en.wikipedia.org\/wiki\/Verhoeff_algorithm\" target=\"_new\" rel=\"noopener nofollow\">Verhoeff\u7b97\u6cd5<\/a><\/li>\n<li><a href=\"https:\/\/en.wikipedia.org\/wiki\/Cyclic_redundancy_check\" target=\"_new\" rel=\"noopener nofollow\">CRC\uff08\u5faa\u73af\u5197\u4f59\u6821\u9a8c\uff09<\/a><\/li>\n<\/ul>\n<h2>\u7ed3\u8bba<\/h2>\n<p>\u6821\u9a8c\u6570\u5b57\u6280\u672f\u5df2\u88ab\u8bc1\u660e\u662f\u9a8c\u8bc1\u6570\u636e\u5b8c\u6574\u6027\u548c\u68c0\u6d4b\u9519\u8bef\u7684\u6709\u6548\u4e14\u9ad8\u6548\u7684\u65b9\u6cd5\u3002\u5b83\u5728\u5404\u4e2a\u884c\u4e1a\u7684\u5e7f\u6cdb\u4f7f\u7528\u8bc1\u660e\u4e86\u5b83\u5728\u7ef4\u62a4\u53ef\u9760\u7684\u6570\u636e\u5904\u7406\u7cfb\u7edf\u65b9\u9762\u7684\u91cd\u8981\u6027\u3002\u968f\u7740\u6280\u672f\u7684\u4e0d\u65ad\u53d1\u5c55\uff0c\u6821\u9a8c\u4f4d\u7b97\u6cd5\u65e0\u7591\u5c06\u5f97\u5230\u8fdb\u4e00\u6b65\u5b8c\u5584\u548c\u8c03\u6574\uff0c\u4ee5\u5e94\u5bf9\u672a\u6765\u6570\u636e\u9a71\u52a8\u4e16\u754c\u7684\u6311\u6218\u3002\u65e0\u8bba\u662f\u4fdd\u62a4\u91d1\u878d\u4ea4\u6613\u8fd8\u662f\u9a8c\u8bc1\u4ea7\u54c1\u4ee3\u7801\uff0c\u6821\u9a8c\u4f4d\u4ecd\u7136\u662f\u786e\u4fdd\u6570\u636e\u51c6\u786e\u6027\u548c\u53ef\u4fe1\u5ea6\u7684\u91cd\u8981\u5de5\u5177\u3002<\/p>","protected":false},"featured_media":467846,"menu_order":0,"template":"","meta":{"_acf_changed":false,"content-type":"","inline_featured_image":false,"footnotes":""},"class_list":["post-476216","wiki","type-wiki","status-publish","has-post-thumbnail","hentry"],"acf":{"faq_title":"Frequently Asked Questions about <mark>Check Digit: Enhancing Data Integrity and Verification<\/mark>","faq_items":[{"question":"What is a Check Digit?","answer":"<p>A check digit, also known as a validation digit or checksum digit, is a numerical value calculated from a series of data digits to verify data accuracy and detect errors during transmission or storage.<\/p>"},{"question":"How did the concept of Check Digits originate?","answer":"<p>The concept of check digits dates back to the early 20th century when Frank A. S. P. Gray developed a method to detect errors in telegraphic messages by adding a control character, later known as the check digit. The formal mathematical definition and widespread adoption of check digits came with the advancement of computer technology in the mid-20th century.<\/p>"},{"question":"How does a Check Digit work?","answer":"<p>When transmitting data, a sender calculates the check digit from the original data and appends it to the end. The recipient then recalculates the check digit from the received data (including the appended check digit) and compares it to the received value. If they match, it indicates the data is likely error-free.<\/p>"},{"question":"What are the key features of Check Digits?","answer":"<p>The key features of check digits include error detection, data integrity assurance, efficiency in data verification, and the introduction of redundancy to prevent errors from going undetected.<\/p>"},{"question":"What are the different types of Check Digits?","answer":"<p>Some common types of check digits are Luhn Algorithm (used in credit card numbers and IMEI numbers), Verhoeff Algorithm (effective against transcription errors), Modulus 11 (used in applications with numeric data), and ISBN (specific to International Standard Book Numbers).<\/p>"},{"question":"How is Check Digit used and what are the problems it can encounter?","answer":"<p>Check digits find application in credit card validation, barcodes, product codes, and identification numbers. However, they can face issues such as collisions, check digit modification, and challenges with varying data lengths.<\/p>"},{"question":"How does Check Digit compare to CRC (Cyclic Redundancy Check)?","answer":"<p>Check digits focus on error detection and verification, while CRC is more complex and primarily used for error detection in network communication.<\/p>"},{"question":"What are the future perspectives and technologies related to Check Digit?","answer":"<p>The future of check digit technology lies in enhancing its robustness and adaptability, incorporating smarter algorithms, and potentially integrating it with blockchain technology for decentralized and tamper-resistant data verification systems.<\/p>"},{"question":"How does Check Digit relate to proxy servers?","answer":"<p>Check digits can complement the security measures of proxy servers like those provided by OneProxy (oneproxy.pro) by adding an extra layer of data validation during transmission.<\/p>"},{"question":"Where can I find more information about Check Digits?","answer":"<p>For more information on check digits, you can explore the following resources:<\/p><ul><li>Wikipedia - Check Digit<\/li><li>Luhn Algorithm<\/li><li>Verhoeff Algorithm<\/li><li>CRC (Cyclic Redundancy Check)<\/li><\/ul>"}]},"_links":{"self":[{"href":"https:\/\/oneproxy.pro\/cn\/wp-json\/wp\/v2\/wiki\/476216","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/oneproxy.pro\/cn\/wp-json\/wp\/v2\/wiki"}],"about":[{"href":"https:\/\/oneproxy.pro\/cn\/wp-json\/wp\/v2\/types\/wiki"}],"version-history":[{"count":0,"href":"https:\/\/oneproxy.pro\/cn\/wp-json\/wp\/v2\/wiki\/476216\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/oneproxy.pro\/cn\/wp-json\/wp\/v2\/media\/467846"}],"wp:attachment":[{"href":"https:\/\/oneproxy.pro\/cn\/wp-json\/wp\/v2\/media?parent=476216"}],"curies":[{"name":"\u53ef\u6e7f\u6027\u7c89\u5242","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}