{"id":2461,"date":"2024-08-02T20:27:00","date_gmt":"2024-08-02T12:27:00","guid":{"rendered":"https:\/\/systw.net\/note\/?p=2461"},"modified":"2025-11-04T01:40:10","modified_gmt":"2025-11-03T17:40:10","slug":"%e6%95%b8%e4%bd%8d%e7%b0%bd%e7%ab%a0","status":"publish","type":"post","link":"https:\/\/systw.net\/note\/archives\/2461","title":{"rendered":"Digital Signature"},"content":{"rendered":"\n<p><\/p>\n\n\n\n<p>\u6578\u4f4d\u7c3d\u7ae0\u662f\u4e00\u7a2e\u5229\u7528\u5bc6\u78bc\u5b78\u6280\u8853\u6a21\u64ec\u50b3\u7d71\u624b\u5beb\u7c3d\u540d\u7684\u6a5f\u5236\uff0c\u7528\u65bc\u78ba\u4fdd\u6578\u4f4d\u8a0a\u606f\u7684\u771f\u5be6\u6027\u3001\u5b8c\u6574\u6027\u53ca\u4e0d\u53ef\u5426\u8a8d\u6027\u3002\u5728\u6578\u4f4d\u5316\u6642\u4ee3\uff0c<code>Digital Signature<\/code>\u5ee3\u6cdb\u61c9\u7528\u65bc\u96fb\u5b50\u5408\u7d04\u3001\u96fb\u5b50\u90f5\u4ef6\u53ca\u7db2\u8def\u4ea4\u6613\uff0c\u5177\u5099\u8207\u50b3\u7d71\u7c3d\u540d\u76f8\u540c\u7684\u6cd5\u5f8b\u6548\u529b\u3002<\/p>\n\n\n\n<p><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u6578\u4f4d\u7c3d\u7ae0\u9700\u6eff\u8db33\u689d\u4ef6\uff1a<\/h3>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u771f\u5be6\u6027<\/strong>\uff1a\u63a5\u6536\u7aef\u80fd\u900f\u904e\u767c\u9001\u7aef\u7684\u516c\u958b\u9470\u5319\u9a57\u8b49\u5176\u8eab\u4efd\uff0c\u78ba\u8a8d\u8a0a\u606f\u4f86\u6e90\u3002<\/li>\n\n\n\n<li><strong>\u4e0d\u53ef\u5426\u8a8d\u6027<\/strong>\uff1a\u767c\u9001\u7aef\u7121\u6cd5\u5426\u8a8d\u66fe\u767c\u9001\u8a0a\u606f\uff0c\u56e0\u7c3d\u7ae0\u7531\u5176\u79c1\u9470\u751f\u6210\u3002<\/li>\n\n\n\n<li><strong>\u9632\u507d\u9020\u6027<\/strong>\uff1a\u63a5\u6536\u7aef\u7121\u6cd5\u507d\u9020\u6709\u6548\u7684\u6578\u4f4d\u7c3d\u7ae0\uff0c\u4fdd\u8b77\u767c\u9001\u7aef\u7684\u8a0a\u606f\u5b8c\u6574\u6027\u3002<\/li>\n<\/ol>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-dots\"\/>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>\u904b\u4f5c\u6d41\u7a0b<\/strong><\/h3>\n\n\n\n<p>\u76ee\u524d\u4e3b\u6d41\u7684<code>Digital Signature<\/code>\u662f\u975e\u5c0d\u7a31\u52a0\u5bc6\u7c3d\u7ae0\uff0c\u4e5f\u7a31\u516c\u5171\u9375\u503c\u7c3d\u7ae0\uff0c\u904b\u4f5c\u5206\u70ba\u7c3d\u7f72\u548c\u9a57\u8b49\u5169\u500b\u968e\u6bb5\uff0c\u4ee5\u4e0b\u662f\u8a73\u7d30\u6b65\u9a5f\uff1a<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>\u6b65\u9a5f 1\uff1a\u751f\u6210\u8a0a\u606f\u6458\u8981\uff08\u767c\u9001\u7aef\uff09<\/strong><\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u767c\u9001\u8005\u5c0d\u8981\u7c3d\u7f72\u7684\u8a0a\u606f\uff08\u4f8b\u5982\u4e00\u4efd\u6587\u4ef6\u3001\u4e00\u6bb5\u6587\u5b57\uff09\u4f7f\u7528\u55ae\u5411\u96dc\u6e4a\u51fd\u6578\uff08\u5982 SHA-256\uff09\u8a08\u7b97\u4e00\u500b<code>message digest<\/code>\u3002<\/li>\n\n\n\n<li><code>message digest<\/code>\u662f\u4e00\u500b\u56fa\u5b9a\u9577\u5ea6\u7684\u5b57\u4e32\uff08\u4f8b\u5982 SHA-256 \u7522\u751f 256 \u4f4d\u5143\/64 \u5b57\u5143\u7684\u6458\u8981\uff09\uff0c\u4ee3\u8868\u8a0a\u606f\u7684\u300c\u6307\u7d0b\u300d\u3002<\/li>\n\n\n\n<li>\u76ee\u7684\uff1a\u7e2e\u77ed\u8a0a\u606f\u9577\u5ea6\uff08\u7c3d\u7f72\u9577\u8a0a\u606f\u6548\u7387\u4f4e\uff09\uff0c\u4e26\u78ba\u4fdd\u4efb\u4f55\u6539\u52d5\u90fd\u6703\u5c0e\u81f4\u6458\u8981\u5b8c\u5168\u4e0d\u540c\u3002<\/li>\n\n\n\n<li><strong>\u7bc4\u4f8b<\/strong>\uff1a\n<ul class=\"wp-block-list\">\n<li>\u8a0a\u606f\uff1a&#8221;\u8f49\u5e331000\u5143\u7d66\u5e33\u623612345&#8243;<\/li>\n\n\n\n<li>\u96dc\u6e4a\u51fd\u6578\uff1aSHA-256<\/li>\n\n\n\n<li>\u8a0a\u606f\u6458\u8981\uff1a5e884898da28047151d0e56f8dc6292773603d0d6aabbdd62a11ef721d1542d8<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>\u6b65\u9a5f 2\uff1a\u7c3d\u7f72\u8a0a\u606f\u6458\u8981\uff08\u767c\u9001\u7aef\uff09<\/strong><\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u767c\u9001\u8005\u7528\u81ea\u5df1\u7684<code>Private Key<\/code>\u5c0d<code>message digest<\/code>\u9032\u884c\u52a0\u5bc6\uff0c\u751f\u6210<code>Digital Signature<\/code>\u3002<\/li>\n\n\n\n<li>\u52a0\u5bc6\u904e\u7a0b\u4f7f\u7528\u975e\u5c0d\u7a31\u52a0\u5bc6\u6f14\u7b97\u6cd5\uff08\u5982 RSA\u3001DSA\u3001ECDSA\uff09\u3002<\/li>\n\n\n\n<li><code>Digital Signature<\/code>\u662f\u7368\u4e00\u7121\u4e8c\u7684\uff0c\u53ea\u6709\u6301\u6709<code>Private Key<\/code>\u7684\u4eba\u624d\u80fd\u751f\u6210\u3002<\/li>\n\n\n\n<li>\u7bc4\u4f8b\uff1a\n<ul class=\"wp-block-list\">\n<li>\u4f7f\u7528 RSA \u79c1\u5bc6\u91d1\u9470\u52a0\u5bc6\u6458\u8981 5e884898&#8230;\uff0c\u751f\u6210\u7c3d\u7ae0\uff1axyz789abc&#8230;\uff08\u5047\u8a2d\u503c\uff0c\u5be6\u969b\u70ba\u4e00\u4e32\u5bc6\u6587\uff09\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>\u7d50\u679c\uff1a\u767c\u9001\u8005\u5f97\u5230\u539f\u59cb\u8a0a\u606f\u548c<code>Digital Signature<\/code>\u3002<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>\u6b65\u9a5f 3\uff1a\u767c\u9001\u8a0a\u606f\u8207\u7c3d\u7ae0<\/strong><\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u767c\u9001\u8005\u5c07\u539f\u59cb\u8a0a\u606f\u548c<code>Digital Signature<\/code>\u4e00\u8d77\u50b3\u9001\u7d66\u63a5\u6536\u8005\u3002<\/li>\n\n\n\n<li>\u6ce8\u610f\uff1a\u8a0a\u606f\u672c\u8eab\u53ef\u4ee5\u662f\u660e\u6587\uff08\u4e0d\u52a0\u5bc6\uff09\uff0c\u56e0\u70ba<code>Digital Signature<\/code>\u5df2\u63d0\u4f9b\u771f\u5be6\u6027\u548c\u5b8c\u6574\u6027\u4fdd\u8b77\u3002\u82e5\u9700\u4fdd\u5bc6\uff0c\u53ef\u984d\u5916\u7528\u63a5\u6536\u8005\u7684\u516c\u958b\u91d1\u9470\u52a0\u5bc6\u8a0a\u606f\u3002<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>\u6b65\u9a5f 4\uff1a\u9a57\u8b49\u7c3d\u7ae0\uff08\u63a5\u6536\u7aef\uff09<\/strong><\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u63a5\u6536\u8005\u57f7\u884c\u4ee5\u4e0b\u64cd\u4f5c\u4f86\u9a57\u8b49\u7c3d\u7ae0\uff1a\n<ol class=\"wp-block-list\">\n<li><strong>\u89e3\u5bc6\u7c3d\u7ae0<\/strong>\uff1a\n<ul class=\"wp-block-list\">\n<li>\u7528\u767c\u9001\u8005\u7684<code>Public Key<\/code>\u89e3\u5bc6\u6536\u5230\u7684<code>Digital Signature<\/code>\uff0c\u5f97\u5230\u539f\u59cb\u7684<code>message digest<\/code>\u3002<\/li>\n\n\n\n<li>\u4f8b\u5982\uff1a\u7528 RSA \u516c\u958b\u91d1\u9470\u89e3\u5bc6 xyz789abc&#8230;\uff0c\u9084\u539f\u6458\u8981 5e884898&#8230;\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\u91cd\u65b0\u8a08\u7b97\u8a0a\u606f\u6458\u8981<\/strong>\uff1a\n<ul class=\"wp-block-list\">\n<li>\u5c0d\u6536\u5230\u7684\u539f\u59cb\u8a0a\u606f\uff08&#8221;\u8f49\u5e331000\u5143\u7d66\u5e33\u623612345&#8243;\uff09\u4f7f\u7528\u76f8\u540c\u7684\u96dc\u6e4a\u51fd\u6578\uff08SHA-256\uff09\u91cd\u65b0\u8a08\u7b97<code>message digest<\/code>\u3002<\/li>\n\n\n\n<li>\u7d50\u679c\uff1a5e884898da28047151d0e56f8dc6292773603d0d6aabbdd62a11ef721d1542d8\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\u6bd4\u5c0d\u6458\u8981<\/strong>\uff1a\n<ul class=\"wp-block-list\">\n<li>\u6bd4\u8f03\u89e3\u5bc6\u7684<code>message digest<\/code>\uff08\u5f9e\u7c3d\u7ae0\u5f97\u5230\uff09\u548c\u91cd\u65b0\u8a08\u7b97\u7684<code>message digest<\/code>\uff1a\n<ul class=\"wp-block-list\">\n<li><strong>\u4e00\u81f4<\/strong>\uff1a\u8b49\u660e\u8a0a\u606f\u672a\u88ab\u7be1\u6539\uff08\u5b8c\u6574\u6027\uff09\uff0c\u4e14\u4f86\u81ea\u6301\u6709\u79c1\u5bc6\u91d1\u9470\u7684\u767c\u9001\u8005\uff08\u771f\u5be6\u6027\uff09\u3002<\/li>\n\n\n\n<li><strong>\u4e0d\u4e00\u81f4<\/strong>\uff1a\u8a0a\u606f\u53ef\u80fd\u88ab\u6539\u52d5\u6216\u7c3d\u7ae0\u7121\u6548\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-dots\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\u6578\u4f4d\u7c3d\u7ae0\u5e38\u898b\u6280\u8853<\/h3>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u975e\u5c0d\u7a31\u52a0\u5bc6\u7c3d\u7ae0\uff08\u516c\u5171\u9375\u503c\u7c3d\u7ae0\uff09<\/strong>\uff1a\n<ul class=\"wp-block-list\">\n<li><strong>RSA<\/strong>\uff1a\u696d\u754c\u6a19\u6e96\u6f14\u7b97\u6cd5\uff0c\u5ee3\u6cdb\u61c9\u7528\u65bc SSL\/TLS\u3001\u96fb\u5b50\u90f5\u4ef6\u7c3d\u7f72\u7b49\u3002\u73fe\u4ee3\u8981\u6c42\u91d1\u9470\u9577\u5ea6\u81f3\u5c11 2048 \u4f4d\u5143\u3002<\/li>\n\n\n\n<li><strong>DSS\uff08\u6578\u4f4d\u7c3d\u7ae0\u6a19\u6e96\uff09<\/strong>\uff1a1991 \u5e74 NIST \u63d0\u51fa\uff0c\u63a1\u7528 DSA\uff08\u6578\u4f4d\u7c3d\u7ae0\u6f14\u7b97\u6cd5\uff09\u7d50\u5408 SHA-1 \u6216 SHA-256\u3002\u91d1\u9470\u9577\u5ea6\u5efa\u8b70 2048 \u4f4d\u5143\u4ee5\u4e0a\u3002<\/li>\n\n\n\n<li>\u904b\u4f5c\u6d41\u7a0b\uff1a\u767c\u9001\u8005\u7528\u79c1\u9470\u7c3d\u7f72\u8a0a\u606f\u6458\u8981\uff0c\u63a5\u6536\u8005\u7528\u516c\u958b\u9470\u5319\u9a57\u8b49\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\u8a0a\u606f\u6458\u8981\u751f\u6210<\/strong>\uff1a\n<ul class=\"wp-block-list\">\n<li>\u4f7f\u7528\u55ae\u5411\u96dc\u6e4a\u51fd\u6578\uff08\u5982 SHA-256\u3001SHA-3\uff09\u5c07\u8a0a\u606f\u8f49\u70ba\u56fa\u5b9a\u9577\u5ea6\u7684\u8a0a\u606f\u6458\u8981\uff0c\u78ba\u4fdd\u8a0a\u606f\u5b8c\u6574\u6027\u3002<\/li>\n\n\n\n<li>\u6ce8\u610f\uff1aMD5 \u548c SHA-1 \u5df2\u4e0d\u5b89\u5168\uff0c\u4e0d\u5efa\u8b70\u7528\u65bc\u65b0\u7cfb\u7d71\u3002<\/li>\n\n\n\n<li>\u7bc4\u4f8b\uff1a\u5c0d\u6587\u4ef6\u8a08\u7b97 SHA-256 \u6458\u8981\uff0c\u7136\u5f8c\u7528\u79c1\u9470\u7c3d\u7f72\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\u5c0d\u7a31\u9375\u7c3d\u7ae0\uff08\u8f03\u5c11\u898b\uff09<\/strong>\uff1a\n<ul class=\"wp-block-list\">\n<li>\u900f\u904e\u53ef\u4fe1\u4efb\u7684\u7b2c\u4e09\u65b9\u6a5f\u69cb\uff08CA\uff09\uff0c\u4f7f\u7528\u8005\u548c\u6a5f\u69cb\u5171\u4eab\u79d8\u5bc6\u91d1\u9470\u751f\u6210\u7c3d\u7ae0\u3002<\/li>\n\n\n\n<li>\u7f3a\u9ede\uff1a\u7b2c\u4e09\u65b9\u53ef\u8b80\u53d6\u8a0a\u606f\uff0c\u9700\u9ad8\u5ea6\u4fe1\u4efb\u6a5f\u69cb\uff1b\u5be6\u52d9\u4e2d\u591a\u7528\u65bc MAC \u800c\u975e\u6578\u4f4d\u7c3d\u7ae0\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\u7279\u6b8a\u6578\u4f4d\u7c3d\u7ae0<\/strong>\uff1a\n<ul class=\"wp-block-list\">\n<li>\u4f8b\u5982\uff0c\u4e0d\u53ef\u5426\u8a8d\u7c3d\u7ae0\uff0c\u76f2\u76ee\u7c3d\u7ae0\uff0c\u4ee3\u7406\u7c3d\u7ae0<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-dots\"\/>\n\n\n\n<h4 class=\"wp-block-heading\">undeniable signature(\u4e0d\u53ef\u5426\u8a8d\u7c3d\u7ae0)<\/h4>\n\n\n\n<p>Chaum &amp; 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