{"id":776,"date":"2021-10-22T22:19:59","date_gmt":"2021-10-22T14:19:59","guid":{"rendered":"http:\/\/eotstxtab.top\/?p=776"},"modified":"2021-10-22T22:22:21","modified_gmt":"2021-10-22T14:22:21","slug":"%e5%88%86%e7%bb%84%e5%af%86%e7%a0%81%e5%ad%a6-ctr%e8%ae%a1%e6%97%b6%e5%99%a8%e6%a8%a1%e5%bc%8f","status":"publish","type":"post","link":"http:\/\/43.142.23.155\/?p=776","title":{"rendered":"\u5206\u7ec4\u5bc6\u7801\u2014CTR\u8ba1\u65f6\u5668\u6a21\u5f0f"},"content":{"rendered":"\n

\u4e00\u3001\u6982\u8ff0<\/p>\n\n\n\n

Counter Mode Encryption<\/strong><\/p>\n\n\n\n

CTR\u6a21\u5f0f\u662f\u4e00\u79cd\u901a\u8fc7\u5c06\u9010\u6b64\u7d2f\u52a0\u7684\u8ba1\u6570\u5668\u8fdb\u884c\u52a0\u5bc6\u6765\u751f\u6210\u5bc6\u94a5\u6d41\u7684\u6d41\u5bc6\u7801\u5de5\u4f5c\u6a21\u5f0f\u3002<\/p>\n\n\n\n

CTR\u6a21\u5f0f\u4e2d\uff0c\u6bcf\u4e2a\u5206\u7ec4\u5bf9\u5e94\u4e00\u4e2a\u9010\u6b21\u7d2f\u52a0\u7684\u8ba1\u6570\u5668\uff0c\u5e76\u901a\u8fc7\u5bf9\u8ba1\u6570\u5668\u8fdb\u884c\u52a0\u5bc6\u6765\u751f\u6210\u5bc6\u94a5\u6d41\u3002\u4e5f\u5c31\u662f\u8bf4\uff0c\u6700\u7ec8\u7684\u5bc6\u6587\u5206\u7ec4\u662f\u901a\u8fc7\u5c06\u8ba1\u6570\u5668\u5f97\u5230\u7684\u6bd4\u7279\u5e8f\u5217\uff0c\u4e0e\u660e\u6587\u5206\u7ec4\u8fdb\u884cXOR\u800c\u5f97\u5230\u7684\u3002<\/p>\n\n\n\n

\u76f4\u63a5\u770b\u56fe<\/p>\n\n\n\n

\"\"\/<\/figure>\n\n\n\n

tips\uff1a<\/p>\n\n\n\n

  1. \u5206\u7ec4\u4e4b\u95f4\u6ca1\u6709\u76f4\u63a5\u5173\u7cfb\uff0c\u8fd9\u662f\u548cCFB\u3001OFB\u7684\u5dee\u8ddd\uff0c\u8054\u7cfb\u7684\u552f\u4e00\u9014\u5f84\u5728\u4e8e\u8ba1\u6570\u5668\uff0c\u8ba1\u6570\u5668\u6bcf\u6b21+1\u5373\u53ef<\/li>
  2. \u89e3\u5bc6\u4e0e\u52a0\u5bc6\u8fc7\u7a0b\u4e2d\u7684\u5c0f\u6a21\u5757\u7686\u4e3a\u52a0\u5bc6\uff0c\u4e5f\u5c31\u662f\u8bf4\u4ece\u5b8f\u89c2\u4e0a\u6765\u770b\uff0c\u52a0\u89e3\u5bc6\u7b97\u6cd5\u9664\u4e86\u8f93\u5165\u7684\u6570\u636e\u4e0d\u540c\u5916\uff0c\u5176\u8fc7\u7a0b\u662f\u5b8c\u5168\u4e00\u81f4\u7684\uff0c\u8fd9\u70b9\u548cCFB\u3001OFB\u5f88\u7c7b\u4f3c<\/li>
  3. xFB\u91c7\u7528\u7684\u662f\u79fb\u4f4d\u5bc4\u5b58\u5668\uff08IV\uff09\uff0c\u8fd9\u91cc\u662f\u8ba1\u6570\u5668\u3002<\/li><\/ol>\n\n\n\n

    \u4e8c\u3001\u7279\u70b9<\/p>\n\n\n\n

    CTR\u6a21\u5f0f\u7684\u52a0\u5bc6\u548c\u89e3\u5bc6\u4f7f\u7528\u4e86\u5b8c\u5168\u76f8\u540c\u7684\u7ed3\u6784\uff0c\u56e0\u6b64\u5728\u7a0b\u5e8f\u5b9e\u73b0\u4e0a\u6bd4\u8f83\u5bb9\u6613\u3002\u8fd9\u4e00\u7279\u70b9\u548c\u540c\u4e3a\u6d41\u5bc6\u7801\u7684OFB\u6a21\u5f0f\u662f\u4e00\u6837\u7684\u3002<\/p>\n\n\n\n

    CTR\u6a21\u5f0f\u4e2d\u53ef\u4ee5\u4ee5\u4efb\u610f\u987a\u5e8f\u5bf9\u5206\u7ec4\u8fdb\u884c\u52a0\u5bc6\u548c\u89e3\u5bc6\uff0c\u56e0\u6b64\u5728\u52a0\u5bc6\u548c\u89e3\u5bc6\u65f6\u9700\u8981\u7528\u5230\u201c\u8ba1\u6570\u5668\u201d\u7684\u503c\uff0c\u53ef\u4ee5\u7531nonce\u548c\u5206\u7ec4\u5e8f\u53f7\u76f4\u63a5\u8ba1\u7b97\u51fa\u6765\u3002\u8fd9\u4e00\u6027\u8d28\u662fOFB\u6a21\u5f0f\u6240\u4e0d\u5177\u5907\u7684\u3002<\/p>\n\n\n\n

    \u80fd\u591f\u4ee5\u4efb\u610f\u987a\u5e8f\u5904\u7406\u5206\u7ec4\uff0c\u5c31\u610f\u5473\u7740\u80fd\u591f\u5b9e\u73b0\u5e76\u884c\u8ba1\u7b97\u3002\u5728\u804c\u573a\u5e76\u884c\u8ba1\u7b97\u7684\u7cfb\u7edf\u4e2d\uff0cCTR\u6a21\u5f0f\u7684\u901f\u5ea6\u662f\u975e\u5e38\u5feb\u7684\u3002<\/p>\n\n\n\n

    \u4e09\u3001\u9519\u8bef\u4f20\u64ad\u548c\u5b89\u5168\u6027<\/p>\n\n\n\n

    1\u3001\u9519\u8bef\u4f20\u64ad<\/p>\n\n\n\n

    CTR\u6a21\u5f0f\u4e5f\u5177\u5907\u548cOFB\u6a21\u5f0f\u5dee\u4e0d\u90fd\u7684\u6027\u8d28\u3002\u5047\u8bbeCTR\u6a21\u5f0f\u7684\u5bc6\u6587\u5206\u7ec4\u6709\u4e00\u4e2a\u6bd4\u7279\u53cd\u8f6c\u4e86\uff0c\u5219\u89e3\u5bc6\u540e\u7684\u660e\u6587\u5206\u7ec4\u4e2d\u4ec5\u6709\u4e0e\u4e4b\u5bf9\u5e94\u7684\u6bd4\u7279\u4f1a\u88ab\u53cd\u8f6c\uff0c\u8fd9\u4e00\u9519\u8bef\u4e0d\u4f1a\u653e\u5927\u3002<\/p>\n\n\n\n

    \u5bf9\u5e94\u4f4d\u7f6e\uff0c\u76f8\u540c\u6570\u91cf<\/strong><\/p>\n\n\n\n

    2\u3001\u5b89\u5168\u6027<\/p>\n\n\n\n

    \u4e0e\u4e4b\u76f8\u5bf9\u7684\uff0c\u4e3b\u52a8\u653b\u51fb\u8005Mallory\u53ef\u4ee5\u901a\u8fc7\u53cd\u8f6c\u5bc6\u6587\u5206\u7ec4\u4e2d\u7684\u67d0\u4e9b\u6bd4\u7279\uff0c\u5f15\u8d77\u89e3\u5bc6\u540e\u660e\u6587\u4e2d\u7684\u76f8\u5e94\u6bd4\u7279\u4e5f\u53d1\u751f\u53cd\u8f6c\u3002\u8fd9\u4e00\u5f31\u70b9\u548cOFB\u6a21\u5f0f\u662f\u76f8\u540c\u7684\u3002<\/p>\n\n\n\n

    \u540c\u6837\u7684\uff0c\u4ed6\u4e5f\u4e0d\u5177\u5907\u8ba4\u8bc1\u6027\uff1aCTR\u6a21\u5f0f\u7684\u7f3a\u70b9\u662f\u6ca1\u6709\u9519\u8bef\u4f20\u64ad\uff0c\u56e0\u6b64\u4e0d\u9002\u5408\u7528\u4e8e\u6570\u636e\u5b8c\u6574\u6027\u8ba4\u8bc1\u3002<\/p>\n\n\n\n

    \u4e0d\u8fc7CTR\u6a21\u5f0f\u6a21\u5f0f\u5177\u5907\u4e00\u4e2a\u6bd4OFB\u6a21\u5f0f\u8981\u597d\u7684\u6027\u8d28\u3002\u5728OFB\u6a21\u5f0f\u4e2d\uff0c\u5982\u679c\u5bf9\u5bc6\u94a5\u6d41\u7684\u4e00\u4e2a\u5206\u7ec4\u8fdb\u884c\u52a0\u5bc6\u540e\u671f\u7ed3\u679c\u78b0\u5de7\u548c\u52a0\u5bc6\u524d\u662f\u76f8\u540c\u7684\uff0c\u90a3\u4e48\u8fd9\u4e00\u5206\u7ec4\u4e4b\u540e\u7684\u5bc6\u94a5\u6d41\u5c31\u4f1a\u53d8\u6210\u540c\u4e00\u503c\u7684\u4e0d\u65ad\u53cd\u590d\u3002\u5728CTR\u6a21\u5f0f\u4e2d\u5c31\u4e0d\u5b58\u5728\u8fd9\u4e00\u95ee\u9898\u3002<\/p>\n\n\n\n

    <\/p>\n\n\n\n

    <\/p>\n","protected":false},"excerpt":{"rendered":"

    \u4e00\u3001\u6982\u8ff0 Counter Mode Encryption CTR\u6a21\u5f0f\u662f\u4e00\u79cd\u901a\u8fc7\u5c06\u9010\u6b64\u7d2f\u52a0\u7684\u8ba1\u6570\u5668\u8fdb\u884c\u52a0\u5bc6\u6765\u751f\u6210\u5bc6\u94a5\u6d41\u7684\u6d41\u5bc6\u7801\u5de5\u4f5c\u6a21\u5f0f\u3002 CTR\u6a21\u5f0f\u4e2d\uff0c\u6bcf\u4e2a\u5206\u7ec4\u5bf9\u5e94\u4e00\u4e2a\u9010\u6b21\u7d2f\u52a0\u7684\u8ba1\u6570\u5668\uff0c\u5e76\u901a\u8fc7\u5bf9\u8ba1\u6570\u5668\u8fdb...<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[7,39],"tags":[40,21],"class_list":["post-776","post","type-post","status-publish","format-standard","hentry","category-7","category-39","tag-40","tag-21"],"_links":{"self":[{"href":"http:\/\/43.142.23.155\/index.php?rest_route=\/wp\/v2\/posts\/776","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/43.142.23.155\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/43.142.23.155\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/43.142.23.155\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/43.142.23.155\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=776"}],"version-history":[{"count":4,"href":"http:\/\/43.142.23.155\/index.php?rest_route=\/wp\/v2\/posts\/776\/revisions"}],"predecessor-version":[{"id":782,"href":"http:\/\/43.142.23.155\/index.php?rest_route=\/wp\/v2\/posts\/776\/revisions\/782"}],"wp:attachment":[{"href":"http:\/\/43.142.23.155\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=776"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/43.142.23.155\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=776"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/43.142.23.155\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=776"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}