{"id":535403,"date":"2021-09-05T18:40:19","date_gmt":"2021-09-05T10:40:19","guid":{"rendered":"http:\/\/4563.org\/?p=535403"},"modified":"2021-09-05T18:40:19","modified_gmt":"2021-09-05T10:40:19","slug":"%e5%af%86%e7%a0%81%e5%ad%a6%e9%97%ae%e9%a2%98%e5%a6%82%e4%bd%95%e5%9c%a8%e6%b2%a1%e6%9c%89%e7%a7%81%e9%92%a5%e7%9a%84%e6%83%85%e5%86%b5%e4%b8%8b%ef%bc%8c%e9%aa%8c%e8%af%81%e6%9f%90%e4%b8%aa%e5%af%86","status":"publish","type":"post","link":"http:\/\/4563.org\/?p=535403","title":{"rendered":"\u5bc6\u7801\u5b66\u95ee\u9898:\u5982\u4f55\u5728\u6ca1\u6709\u79c1\u94a5\u7684\u60c5\u51b5\u4e0b\uff0c\u9a8c\u8bc1\u67d0\u4e2a\u5bc6\u6587\u662f\u7528\u516c\u94a5\u52a0\u7684\u5bc6\uff1f"},"content":{"rendered":"
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\u5bc6\u7801\u5b66\u95ee\u9898:\u5982\u4f55\u5728\u6ca1\u6709\u79c1\u94a5\u7684\u60c5\u51b5\u4e0b\uff0c\u9a8c\u8bc1\u67d0\u4e2a\u5bc6\u6587\u662f\u7528\u516c\u94a5\u52a0\u7684\u5bc6\uff1f <\/h1>\n

<\/p>\n

\n
\u8cc7\u6df1\u5927\u4f6c : flypanda <\/span> <\/i> 14<\/span> <\/div>\n
<\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n
<\/p>\n

\u573a\u666f\u5982\u4e0b Alice \u4f7f\u7528 Bob \u7684\u516c\u94a5 PubKey_Bob<\/code> \u5bf9\u6d88\u606fmessage<\/code>\u8fdb\u884c Encrypt\uff0c\u5f97\u5230\u5bc6\u6587Cipher<\/code> \u6211\u4f5c\u4e3a\u4e2d\u95f4\u4eba\uff0c\u5982\u4f55\u5728\u6ca1\u6709\u89e3\u5bc6\u7528\u7684PrivKey_Bob<\/code>\u7684\u6761\u4ef6\u4e0b\u9a8c\u8bc1 Cipher<\/code> \u786e\u5b9e\u662f\u4f7f\u7528PubKey_Bob<\/code>\u52a0\u7684\u5bc6\uff1f \u6709\u4ec0\u4e48\u5bc6\u7801\u5b66\u65b9\u6848\u6ee1\u8db3\u8fd9\u4e2a\u9700\u6c42\uff1f<\/p>\n<\/p><\/div>\n

\u5927\u4f6c\u6709\u8a71\u8aaa<\/b> (16<\/span>) <\/div>\n
<\/div>\n<\/p><\/div>\n<\/p><\/div>\n
    \n
  • \n
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    \u8cc7\u6df1\u5927\u4f6c : yfugibr <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u51c6\u5907\u4e24\u5bf9\u5bc6\u94a5\uff0c\u4e00\u5bf9\u7528\u4e8e\u52a0\u5bc6\uff0c\u4e00\u5bf9\u7528\u4e8e\u7b7e\u540d <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
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    \u8cc7\u6df1\u5927\u4f6c : yfugibr <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @yfugibr \u6211\u7406\u89e3\u9519\u4e86 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
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    \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : flypanda <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @yfugibr \u6211\u6ca1\u6709\u8868\u8fbe\u6e05\u695a\uff0c\u8fd9\u91cc\u60f3\u9632\u6b62\u7684\u662f Alice \u4f5c\u6076\u3002
    Alice \u867d\u7136\u628a Cipher \u53d1\u7ed9\u4e86 Bob\uff0c\u4f46\u662f\u5c31\u662f\u4e0d\u8ba9 Bob \u89e3\u5bc6\u5176\u4e2d\u7684 Message \u3002
    \u6240\u4ee5\u5c31\u7b97\u51c6\u5907\u4e24\u5bf9\u513f\u79d8\u94a5\uff0cAlice \u8fd8\u662f\u53ef\u4ee5 \u7528`Signature_pubkey_bob`\u7b7e\u540d\uff0c\u4f46\u662f\u4f7f\u7528 `Crypto_pubkey_Evil` \u6765\u52a0\u5bc6
    \u8fd9\u6837\u9a8c\u7b7e \u53ef\u4ee5\u770b\u5230\u786e\u5b9e\u662f Bob \u7684\u516c\u94a5\u5728\u7b7e\u540d…\u4f46\u8fd8\u662f\u4e0d\u80fd\u4fdd\u8bc1 Alice \u662f\u7528 Bob \u7684\u516c\u94a5\u52a0\u7684\u5bc6 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
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    \u8cc7\u6df1\u5927\u4f6c : dablwow <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @flypanda
    “\u4f46\u662f\u5c31\u662f\u4e0d\u8ba9 Bob \u89e3\u5bc6\u5176\u4e2d\u7684 Message”
    ================
    Alice \u53ef\u80fd\u600e\u4e48\u505a\u5462\uff1f\u6bd4\u5982\u7528\u5176\u4ed6\u516c\u94a5\u52a0\u5bc6\uff1f\u6216\u8005\u7834\u574f Cipher \uff1f <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
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    \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : flypanda <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @dablwow
    \u5bf9\u6ca1\u9519\u3002\u53ef\u4ee5\u5148\u53ea\u8003\u8651 “\u7528\u5176\u4ed6\u516c\u94a5\u52a0\u5bc6” \u8fd9\u79cd\u60c5\u51b5…\u6211\u6bd4\u8f83\u62c5\u5fc3\u7684\u5c31\u662f\u8fd9\u4e2a\u60c5\u51b5 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
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    \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : flypanda <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @dablwow @yfugibr \u4e8c\u4f4d\u54e5\uff0c\u6211\u60f3\u8fc7\u4f7f\u7528\u5bc6\u94a5\u5171\u4eab…\u4f46\u662f\u4f3c\u4e4e\u4e0d\u592a\u884c
    \u6bd4\u5982\u95e8\u9650\u601d\u8def\uff1a\u5c06 Bob \u7684\u79c1\u94a5 \u5206\u6210\u591a\u5206\uff0c\u6211\u4f5c\u4e3a\u4e2d\u95f4\u4eba\u6301\u6709\u5176\u4e2d n \u4efd\uff0c\u8d85\u8fc7\u95e8\u9650\uff0c\u53ef\u4ee5\u89e3\u5bc6 Cipher \u3002\u53ea\u8981\u80fd\u89e3\u5bc6\u5c31\u53ef\u4ee5\u786e\u5b9a Alice \u662f\u4f7f\u7528 Pubkey_Bob \u52a0\u7684\u5bc6…
    \u4f46\u8fd9\u4e2a\u601d\u8def\u6709\u4e2a\u7f3a\u9677 \u95e8\u9650\u5bc6\u7801 \u662f\u4f7f\u7528 \u8d85\u8fc7 n \u4efd\u7684\u79c1\u94a5\u788e\u7247 \u6062\u590d\u51fa \u79c1\u94a5\u672c\u8eab…\u6211\u4f5c\u4e3a\u4e2d\u95f4\u4eba\uff0c\u662f\u53ef\u4ee5\u6062\u590d\u51fa PrivKey_Bob \u7684…. \u8fd9\u4e2a\u4e8b\u60c5 Bob \u65e0\u6cd5\u63a5\u53d7…. <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
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    \u8cc7\u6df1\u5927\u4f6c : geelaw <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u4e00\u822c\u6765\u8bf4\u7b54\u6848\u662f vacuously true\uff0c\u56e0\u4e3a\u6709\u4e9b\u65b9\u6848\u91cc\u6709\u53ef\u80fd\u540c\u4e00\u6761\u5bc6\u6587\u672c\u6765\u5c31\u53ef\u4ee5\u88ab\u89e3\u8bfb\u4e3a\u4e24\u4e2a\u4e0d\u540c\u516c\u94a5\u4e0b\u7684\u5bc6\u6587\uff0c\u8003\u8651 ElGamal \u52a0\u5bc6\uff0c\u8003\u8651\u4e24\u4e2a\u516c\u94a5\u5206\u522b\u662f g^a, g^b\uff0c\u5219 h \u5728 g^a \u4e0b\u7684\u5bc6\u6587 g^c, g^ac * h \u4e5f\u53ef\u4ee5\u7406\u89e3\u4e3a g^((a – b)c) * h \u5728 g^b \u4e0b\u7684\u5bc6\u6587 g^c, g^bc * g^((a – b)c) * h \u3002
    \u6211\u89c9\u5f97\u4e3b\u7684\u9700\u6c42\u4f3c\u4e4e\u4e0d\u80fd\u89e3\u51b3\u4e3b\u7684\u95ee\u9898\uff1a\u5373\u4f7f\u8bc1\u660e\u4e86\u67d0\u6bb5\u5bc6\u6587\u53ea\u80fd\u662f\u7528 Bob \u516c\u94a5\u52a0\u5bc6\u6240\u4ea7\u751f\u7684\uff0c\u4e5f\u6ca1\u6709\u8bc1\u660e\u52a0\u5bc6\u4e86\u6709\u610f\u4e49\u7684\u6d88\u606f\u3002 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
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    \u8cc7\u6df1\u5927\u4f6c : wy315700 <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u4ec5\u51ed\u5bc6\u6587\u5c31\u80fd\u5206\u6790\u51fa\u52a0\u5bc6\u5bc6\u94a5\u3002\u3002\u3002
    \u5144\u5f1f\u4f60\u8fd9\u662f\u5b8c\u6210\u4e86\u4e00\u6b21\u552f\u5bc6\u6587\u653b\u51fb\u554a\u3002 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
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    \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : flypanda <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @geelaw \u8bf4\u7684\u6709\u9053\u7406…\u6211\u60f3\u60f3… <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
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    \u8cc7\u6df1\u5927\u4f6c : xarthur <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u611f\u89c9\u662f\u4e2a XY \u95ee\u9898\u2026\u2026 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
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    \u8cc7\u6df1\u5927\u4f6c : Corua <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u662f\u5426\u5728\u627e”\u516c\u94a5\u7684\u4e0d\u53ef\u5426\u8ba4\u6027”\uff0c\u4f46\u73b0\u4eca\u7684\u4f53\u7cfb\u91cc\u5e76\u6ca1\u6709\u8fd9\u79cd\u65b9\u6848
    \u516c\u94a5\u672c\u6765\u5c31\u6ca1\u6709\u7b7e\u540d\u7684\u7528\u9014\uff0c\u4ec5\u6301\u6709\u516c\u94a5\u53c8\u80fd\u5982\u4f55\u4f5c\u6076\u5462\uff1f <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
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    \u8cc7\u6df1\u5927\u4f6c : icegaze <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u7b80\u5355\uff0c
    \u6ca1\u6709 A \u7b7e\u540d\u7684\u4fe1\u606f\uff0c
    \u4e00\u6982\u4e0d\u8ba4\u4e3a\u662f A \u52a0\u5bc6\u7684\u3002
    \u4e22\u5f03\u6389\u5c31\u884c\u3002 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
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    \u8cc7\u6df1\u5927\u4f6c : icegaze <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u975e\u5bf9\u79f0\u5bc6\u94a5\u4f53\u7cfb\u7684\u610f\u4e49\u4e0d\u4ec5\u4ec5\u4e8e\u52a0\u5bc6\u3002
    \u6b63\u786e\u7684\u8fd0\u7528\u662f\uff0c
    \u5e94\u8be5\u5148\u52a0\u5bc6\uff0c\u518d\u5728\u5916\u9762\u5305\u88f9\u4e00\u4e0b\u7b7e\u540d\u3002
    \u8fd9\u624d\u662f\u6574\u5957\u52a0\u5bc6\u4f20\u8f93\u7684\u601d\u8def\u3002 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
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    \u8cc7\u6df1\u5927\u4f6c : icegaze <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u770b\u9519\u4e86\uff0c
    \u4e3b\u662f\u8bf4 A \u7528 B \u7684\u516c\u94a5\u52a0\u5bc6\u4fe1\u606f\u2026
    \u90a3\u65c1\u4eba\uff08\u975e B \uff09\u6839\u672c\u6ca1\u6cd5\u9a8c\u8bc1\u6216\u8005\u89e3\u5bc6\u554a\uff1f <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
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    \u8cc7\u6df1\u5927\u4f6c : niubee1 <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u4f60\u8981\u4e0d\u8ba9\u522b\u4eba\u89e3\u5f00\u8fd8\u4f5c\u4ec0\u4e48\u6076\u5462\uff1f <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
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    \u8cc7\u6df1\u5927\u4f6c : sillydaddy <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u4e0d\u77e5\u9053\u4e3b\u60f3\u8981\u5b9e\u73b0\u4ec0\u4e48\uff0c\u6709\u4e2a\u5bc6\u7801\u5b66\u95ee\u9898\u53eb\u201c\u516c\u5e73\u4ea4\u6362\u201d\uff0c\u53ef\u4ee5\u770b\u4e0b\u8fd9\u4e2a\u5e16\uff1a
    https:\/\/www.v2ex.com\/t\/765057 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n","protected":false},"excerpt":{"rendered":"

    \u5bc6\u7801\u5b66\u95ee\u9898:\u5982\u4f55\u5728\u6ca1\u6709\u79c1\u94a5\u7684\u60c5\u51b5\u4e0b…<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[],"tags":[],"_links":{"self":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts\/535403"}],"collection":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=535403"}],"version-history":[{"count":0,"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts\/535403\/revisions"}],"wp:attachment":[{"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=535403"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=535403"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=535403"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}