{"id":18602,"date":"2024-11-19T20:24:59","date_gmt":"2024-11-19T12:24:59","guid":{"rendered":"https:\/\/fwq.ai\/blog\/?p=18602"},"modified":"2024-11-19T20:24:59","modified_gmt":"2024-11-19T12:24:59","slug":"ssl%e5%8d%8f%e8%ae%ae%e8%af%a6%e8%a7%a3","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/18602\/","title":{"rendered":"SSL\u534f\u8bae\u8be6\u89e3"},"content":{"rendered":"<p>\u6700\u8fd1\u5728\u770b\u300a\u5bc6\u7801\u5b66\u4e0e\u7f51\u7edc\u5b89\u5168\u300b\u76f8\u5173\u7684\u4e66\u7c4d\uff0c\u8fd9\u7bc7\u6587\u7ae0\u4e3b\u8981\u8be6\u7ec6\u4ecb\u7ecd\u4e00\u4e0b\u8457\u540d\u7684\u7f51\u7edc\u5b89\u5168\u534f\u8baeSSL\u3002\u5728\u5f00\u59cbSSl\u4ecb\u7ecd\u4e4b\u524d\uff0c\u5148\u7ed9\u5927\u5bb6\u4ecb\u7ecd\u51e0\u4e2a\u5bc6\u7801\u5b66\u7684\u6982\u5ff5\u548c\u76f8\u5173\u7684\u77e5\u8bc6\u3002<\/p>\n<h1><span id=\"more-1701\"><\/span><br \/>\n1\u3001\u5bc6\u7801\u5b66\u7684\u76f8\u5173\u6982\u5ff5<\/h1>\n<ul>\n<li>\u5bc6\u7801\u5b66(cryptography)\uff1a\u76ee\u7684\u662f\u901a\u8fc7\u5c06\u4fe1\u606f\u7f16\u7801\u4f7f\u5176\u4e0d\u53ef\u8bfb\uff0c\u4ece\u800c\u8fbe\u5230\u5b89\u5168\u6027\u3002<\/li>\n<li>\u660e\u6587(plain text)\uff1a\u53d1\u9001\u4eba\u3001\u63a5\u53d7\u4eba\u548c\u4efb\u4f55\u8bbf\u95ee\u6d88\u606f\u7684\u4eba\u90fd\u80fd\u7406\u89e3\u7684\u6d88\u606f\u3002<\/li>\n<li>\u5bc6\u6587(cipher text)\uff1a\u660e\u6587\u6d88\u606f\u7ecf\u8fc7\u67d0\u79cd\u7f16\u7801\u540e\uff0c\u5f97\u5230\u5bc6\u6587\u6d88\u606f\u3002<\/li>\n<li>\u52a0\u5bc6(encryption)\uff1a\u5c06\u660e\u6587\u6d88\u606f\u53d8\u6210\u5bc6\u6587\u6d88\u606f\u3002<\/li>\n<li>\u89e3\u5bc6(decryption)\uff1a\u5c06\u5bc6\u6587\u6d88\u606f\u53d8\u6210\u660e\u6587\u6d88\u606f\u3002<\/li>\n<li>\u7b97\u6cd5\uff1a\u53d6\u4e00\u4e2a\u8f93\u5165\u6587\u672c\uff0c\u4ea7\u751f\u4e00\u4e2a\u8f93\u51fa\u6587\u672c\u3002<\/li>\n<li>\u52a0\u5bc6\u7b97\u6cd5\uff1a\u53d1\u9001\u65b9\u8fdb\u884c\u52a0\u5bc6\u7684\u7b97\u6cd5\u3002<\/li>\n<li>\u89e3\u5bc6\u7b97\u6cd5\uff1a\u63a5\u6536\u65b9\u8fdb\u884c\u89e3\u5bc6\u7684\u7b97\u6cd5\u3002<\/li>\n<li>\u5bc6\u94a5(key)\uff1a\u53ea\u6709\u53d1\u9001\u65b9\u548c\u63a5\u6536\u65b9\u7406\u89e3\u7684\u6d88\u606f<\/li>\n<li>\u5bf9\u79f0\u5bc6\u94a5\u52a0\u5bc6(Symmetric Key Cryptography)\uff1a\u52a0\u5bc6\u4e0e\u89e3\u5bc6\u4f7f\u7528\u76f8\u540c\u5bc6\u94a5\u3002<\/li>\n<li>\u975e\u5bf9\u79f0\u5bc6\u94a5\u52a0\u5bc6(Asymmetric Key Cryptography)\uff1a\u52a0\u5bc6\u4e0e\u89e3\u5bc6\u4f7f\u7528\u4e0d\u540c\u5bc6\u94a5\u3002<\/li>\n<\/ul>\n<h1>2\u3001\u76f8\u5173\u7684\u52a0\u5bc6\u7b97\u6cd5\u4ecb\u7ecd<\/h1>\n<p>DES\u7b97\u6cd5\u5373\u6570\u636e\u52a0\u5bc6\u6807\u51c6\uff0c\u4e5f\u79f0\u4e3a\u6570\u636e\u52a0\u5bc6\u7b97\u6cd5\u3002\u52a0\u5bc6\u8fc7\u7a0b\u5982\u4e0b\uff1a<\/p>\n<p><a href=\"http:\/\/fwq.ai\/wp-content\/uploads\/2017\/03\/2012100611585721.png\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-18606\" src=\"https:\/\/fwq.ai\/blog\/wp-content\/uploads\/2024\/11\/2012100611585721.png\" width=\"705\" height=\"528\" srcset=\"https:\/\/fwq.ai\/blog\/wp-content\/uploads\/2024\/11\/2012100611585721.png 705w, https:\/\/fwq.ai\/blog\/wp-content\/uploads\/2024\/11\/2012100611585721-300x225.png 300w, https:\/\/fwq.ai\/blog\/wp-content\/uploads\/2024\/11\/2012100611585721-670x502.png 670w\" sizes=\"auto, (max-width: 705px) 100vw, 705px\" title=\"SSL\u534f\u8bae\u8be6\u89e3\u63d2\u56fe\" alt=\"SSL\u534f\u8bae\u8be6\u89e3\u63d2\u56fe\" \/><\/a><\/p>\n<p>\u5728SSL\u4e2d\u4f1a\u7528\u5230\u5206\u7ec4DES\u3001\u4e09\u91cdDES\u7b97\u6cd5\u7b49\u52a0\u5bc6\u7b97\u6cd5\u5bf9\u6570\u636e\u8fdb\u884c\u52a0\u5bc6\u3002\u5f53\u7136\u53ef\u4ee5\u9009\u7528\u5176\u4ed6\u975eDES\u52a0\u5bc6\u7b97\u6cd5\uff0c\u89c6\u60c5\u51b5\u800c\u5b9a\uff0c\u540e\u9762\u4f1a\u8be6\u7ec6\u4ecb\u7ecd\u3002<\/p>\n<h1>3\u3001\u5bc6\u94a5\u4ea4\u6362\u7b97\u6cd5<\/h1>\n<p>\u4f7f\u7528\u5bf9\u79f0\u52a0\u5bc6\u7b97\u6cd5\u65f6\uff0c\u5bc6\u94a5\u4ea4\u6362\u662f\u4e2a\u5927\u96be\u9898\uff0c\u6240\u4ee5Diffie\u548cHellman\u63d0\u51fa\u4e86\u8457\u540d\u7684Diffie-Hellman\u5bc6\u94a5\u4ea4\u6362\u7b97\u6cd5\u3002<\/p>\n<p><strong>3.1\u3001Diffie-Hellman\u5bc6\u94a5\u4ea4\u6362\u7b97\u6cd5\u539f\u7406\uff1a<\/strong><\/p>\n<pre>1\u3001Alice\u4e0eBob\u786e\u5b9a\u4e24\u4e2a\u5927\u7d20\u6570n\u548cg\uff0c\u8fd9\u4e24\u4e2a\u6570\u4e0d\u7528\u4fdd\u5bc6\r\n2\u3001Alice\u9009\u62e9\u53e6\u4e00\u4e2a\u5927\u968f\u673a\u6570x\uff0c\u5e76\u8ba1\u7b97A\u5982\u4e0b\uff1aA=gx mod n\r\n3\u3001Alice\u5c06A\u53d1\u7ed9Bob\r\n4\u3001Bob\u9009\u62e9\u53e6\u4e00\u4e2a\u5927\u968f\u673a\u6570y\uff0c\u5e76\u8ba1\u7b97B\u5982\u4e0b\uff1aB=gy mod n\r\n5\u3001Bob\u5c06B\u53d1\u7ed9Alice\r\n6\u3001\u8ba1\u7b97\u79d8\u5bc6\u5bc6\u94a5K1\u5982\u4e0b\uff1aK1=Bx mod n\r\n7\u3001\u8ba1\u7b97\u79d8\u5bc6\u5bc6\u94a5K2\u5982\u4e0b\uff1aK2=Ay mod n\r\n\r\nK1=K2\uff0c\u56e0\u6b64Alice\u548cBob\u53ef\u4ee5\u7528\u5176\u8fdb\u884c\u52a0\u89e3\u5bc6<\/pre>\n<p><strong>3.2\u3001RSA\u52a0\u5bc6\u7b97\u6cd5\u539f\u7406\uff1a<\/strong><\/p>\n<p>RSA\u52a0\u5bc6\u7b97\u6cd5\u662f\u57fa\u4e8e\u8fd9\u6837\u7684\u6570\u5b66\u4e8b\u5b9e\uff1a\u4e24\u4e2a\u5927\u7d20\u6570\u76f8\u4e58\u5bb9\u6613\uff0c\u800c\u5bf9\u5f97\u5230\u7684\u4e58\u79ef\u6c42\u56e0\u5b50\u5219\u5f88\u96be\u3002\u52a0\u5bc6\u8fc7\u7a0b\u5982\u4e0b\uff1a<\/p>\n<pre>1\u3001\u9009\u62e9\u4e24\u4e2a\u5927\u7d20\u6570P\u3001Q\r\n2\u3001\u8ba1\u7b97N=P*Q\r\n3\u3001\u9009\u62e9\u4e00\u4e2a\u516c\u94a5\uff08\u52a0\u5bc6\u5bc6\u94a5\uff09E\uff0c\u4f7f\u5176\u4e0d\u662f(P-1)\u4e0e(Q-1)\u7684\u56e0\u5b50\r\n4\u3001\u9009\u62e9\u79c1\u94a5\uff08\u89e3\u5bc6\u5bc6\u94a5\uff09D\uff0c\u6ee1\u8db3\u5982\u4e0b\u6761\u4ef6\uff1a\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 (D*E) mod (P-1)(Q-1)=1\r\n5\u3001\u52a0\u5bc6\u65f6\uff0c\u660e\u6587PT\u8ba1\u7b97\u5bc6\u6587CT\u5982\u4e0b\uff1a\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 CT=PTE mod N\r\n6\u3001\u89e3\u5bc6\u65f6\uff0c\u4ece\u5bc6\u6587CT\u8ba1\u7b97\u660e\u6587PT\u5982\u4e0b\uff1a\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 PT=CTDmodN \u8fd9\u4e5f\u662fSSL\u4e2d\u4f1a\u7528\u4e00\u79cd\u5bc6\u94a5\u4ea4\u6362\u7b97\u6cd5\u3002<\/pre>\n<p><strong>3.3\u3001\u6563\u5217\u7b97\u6cd5\uff1a<\/strong><\/p>\n<p>\u4e3b\u8981\u7528\u4e8e\u9a8c\u8bc1\u6570\u636e\u7684\u5b8c\u6574\u6027\uff0c\u5373\u4fdd\u8bc1\u65f6\u6d88\u606f\u5728\u53d1\u9001\u4e4b\u540e\u548c\u63a5\u6536\u4e4b\u524d\u6ca1\u6709\u88ab\u7be1\u6539\u5bf9\u4e8eSSL\u4e2d\u4f7f\u7528\u5230\u7684\u6563\u5217\u7b97\u6cd5\u6709MD5\u3001SHA-1\u3002<\/p>\n<p><strong>3.4\u3001\u6570\u5b57\u8bc1\u4e66<\/strong>\uff1a<\/p>\n<p>\u6570\u5b57\u8bc1\u4e66\u5176\u5b9e\u5c31\u662f\u4e00\u4e2a\u5c0f\u7684\u8ba1\u7b97\u673a\u6587\u4ef6\uff0c\u5176\u4f5c\u7528\u7c7b\u4f3c\u4e8e\u6211\u4eec\u7684\u8eab\u4efd\u8bc1\u3001\u62a4\u7167\uff0c\u7528\u4e8e\u8bc1\u660e\u8eab\u4efd\uff0c\u5728SSL\u4e2d\uff0c\u4f7f\u7528\u6570\u5b57\u8bc1\u4e66\u6765\u8bc1\u660e\u81ea\u5df1\u7684\u8eab\u4efd\uff0c\u800c\u4e0d\u662f\u4f2a\u9020\u7684\u3002<\/p>\n<p><strong>3.5\u3001\u7b80\u5355\u7684\u603b\u7ed3\uff1a<\/strong><\/p>\n<p>\u5728SSL\u4e2d\u4f1a\u4f7f\u7528\u5bc6\u94a5\u4ea4\u6362\u7b97\u6cd5\u4ea4\u6362\u5bc6\u94a5\uff1b\u4f7f\u7528\u5bc6\u94a5\u5bf9\u6570\u636e\u8fdb\u884c\u52a0\u5bc6\uff1b\u4f7f\u7528\u6563\u5217\u7b97\u6cd5\u5bf9\u6570\u636e\u7684\u5b8c\u6574\u6027\u8fdb\u884c\u9a8c\u8bc1\uff0c\u4f7f\u7528\u6570\u5b57\u8bc1\u4e66\u8bc1\u660e\u81ea\u5df1\u7684\u8eab\u4efd\u3002\u597d\u4e86\uff0c\u4e0b\u9762\u5f00\u59cb\u4ecb\u7ecdSSL\u534f\u8bae\u3002<\/p>\n<h1>4\u3001SSL\u4ecb\u7ecd\uff1a<\/h1>\n<p>\u5b89\u5168\u5957\u63a5\u5b57\uff08Secure Socket Layer\uff0cSSL\uff09\u534f\u8bae\u662fWeb\u6d4f\u89c8\u5668\u4e0eWeb\u670d\u52a1\u5668\u4e4b\u95f4\u5b89\u5168\u4ea4\u6362\u4fe1\u606f\u7684\u534f\u8bae\uff0c\u63d0\u4f9b\u4e24\u4e2a\u57fa\u672c\u7684\u5b89\u5168\u670d\u52a1\uff1a\u9274\u522b\u4e0e\u4fdd\u5bc6\u3002SSL\u662fNetscape\u4e8e1994\u5e74\u5f00\u53d1\u7684\uff0c\u540e\u6765\u6210\u4e3a\u4e86\u4e16\u754c\u4e0a\u6700\u8457\u540d\u7684web\u5b89\u5168\u673a\u5236\uff0c\u6240\u6709\u4e3b\u8981\u7684\u6d4f\u89c8\u5668\u90fd\u652f\u6301SSL\u534f\u8bae\u3002<\/p>\n<p>\u76ee\u524d\u6709\u4e09\u4e2a\u7248\u672c\uff1a2\u30013\u30013.1\uff0c\u6700\u5e38\u7528\u7684\u662f\u7b2c3\u7248\uff0c\u662f1995\u5e74\u53d1\u5e03\u7684\u3002<\/p>\n<h3>SSL\u534f\u8bae\u7684\u4e09\u4e2a\u7279\u6027\uff1a<\/h3>\n<ol>\n<li>\u4fdd\u5bc6\uff1a\u5728\u63e1\u624b\u534f\u8bae\u4e2d\u5b9a\u4e49\u4e86\u4f1a\u8bdd\u5bc6\u94a5\u540e\uff0c\u6240\u6709\u7684\u6d88\u606f\u90fd\u88ab\u52a0\u5bc6\u3002<\/li>\n<li>\u9274\u522b\uff1a\u53ef\u9009\u7684\u5ba2\u6237\u7aef\u8ba4\u8bc1\uff0c\u548c\u5f3a\u5236\u7684\u670d\u52a1\u5668\u7aef\u8ba4\u8bc1\u3002<\/li>\n<li>\u5b8c\u6574\u6027\uff1a\u4f20\u9001\u7684\u6d88\u606f\u5305\u62ec\u6d88\u606f\u5b8c\u6574\u6027\u68c0\u67e5\uff08\u4f7f\u7528MAC\uff09\u3002<\/li>\n<\/ol>\n<h3>SSL\u7684\u4f4d\u7f6e<\/h3>\n<p>SSL\u4ecb\u4e8e\u5e94\u7528\u5c42\u548cTCP\u5c42\u4e4b\u95f4\u3002\u5e94\u7528\u5c42\u6570\u636e\u4e0d\u518d\u76f4\u63a5\u4f20\u9012\u7ed9\u4f20\u8f93\u5c42\uff0c\u800c\u662f\u4f20\u9012\u7ed9SSL\u5c42\uff0cSSL\u5c42\u5bf9\u4ece\u5e94\u7528\u5c42\u6536\u5230\u7684\u6570\u636e\u8fdb\u884c\u52a0\u5bc6\uff0c\u5e76\u589e\u52a0\u81ea\u5df1\u7684SSL\u5934\u3002<\/p>\n<p><a href=\"http:\/\/fwq.ai\/wp-content\/uploads\/2017\/03\/2012100609461432.png\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-18607\" src=\"https:\/\/fwq.ai\/blog\/wp-content\/uploads\/2024\/11\/2012100609461432.png\" width=\"548\" height=\"392\" srcset=\"https:\/\/fwq.ai\/blog\/wp-content\/uploads\/2024\/11\/2012100609461432.png 548w, https:\/\/fwq.ai\/blog\/wp-content\/uploads\/2024\/11\/2012100609461432-300x215.png 300w\" sizes=\"auto, (max-width: 548px) 100vw, 548px\" title=\"SSL\u534f\u8bae\u8be6\u89e3\u63d2\u56fe1\" alt=\"SSL\u534f\u8bae\u8be6\u89e3\u63d2\u56fe1\" \/><\/a><\/p>\n<h3>SSL\u7684\u5de5\u4f5c\u539f\u7406<\/h3>\n<p>\u5305\u62ec\u4ee5\u4e0b\u4e09\u4e2a\uff1a<\/p>\n<pre>\u63e1\u624b\u534f\u8bae\uff08Handshake protocol\uff09\r\n\u8bb0\u5f55\u534f\u8bae\uff08Record protocol\uff09\r\n\u8b66\u62a5\u534f\u8bae\uff08Alert protocol\uff09<\/pre>\n<h3><strong>1\u3001\u63e1\u624b\u534f\u8bae<\/strong><\/h3>\n<p>\u63e1\u624b\u534f\u8bae\u662f\u5ba2\u6237\u673a\u548c\u670d\u52a1\u5668\u7528SSL\u8fde\u63a5\u901a\u4fe1\u65f6\u4f7f\u7528\u7684\u7b2c\u4e00\u4e2a\u5b50\u534f\u8bae\uff0c\u63e1\u624b\u534f\u8bae\u5305\u62ec\u5ba2\u6237\u673a\u4e0e\u670d\u52a1\u5668\u4e4b\u95f4\u7684\u4e00\u7cfb\u5217\u6d88\u606f\u3002SSL\u4e2d\u6700\u590d\u6742\u7684\u534f\u8bae\u5c31\u662f\u63e1\u624b\u534f\u8bae\u3002\u8be5\u534f\u8bae\u5141\u8bb8\u670d\u52a1\u5668\u548c\u5ba2\u6237\u673a\u76f8\u4e92\u9a8c\u8bc1\uff0c\u534f\u5546\u52a0\u5bc6\u548cMAC\u7b97\u6cd5\u4ee5\u53ca\u4fdd\u5bc6\u5bc6\u94a5\uff0c\u7528\u6765\u4fdd\u62a4\u5728SSL\u8bb0\u5f55\u4e2d\u53d1\u9001\u7684\u6570\u636e\u3002\u63e1\u624b\u534f\u8bae\u662f\u5728\u5e94\u7528\u7a0b\u5e8f\u7684\u6570\u636e\u4f20\u8f93\u4e4b\u524d\u4f7f\u7528\u7684\u3002<\/p>\n<p>\u6bcf\u4e2a\u63e1\u624b\u534f\u8bae\u5305\u542b\u4ee5\u4e0b3\u4e2a\u5b57\u6bb5<\/p>\n<ol>\n<li>Type\uff1a\u8868\u793a10\u79cd\u6d88\u606f\u7c7b\u578b\u4e4b\u4e00<\/li>\n<li>Length\uff1a\u8868\u793a\u6d88\u606f\u957f\u5ea6\u5b57\u8282\u6570<\/li>\n<li>Content\uff1a\u4e0e\u6d88\u606f\u76f8\u5173\u7684\u53c2\u6570<\/li>\n<\/ol>\n<p><a href=\"http:\/\/fwq.ai\/wp-content\/uploads\/2017\/03\/2012100612230422.png\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-18604\" src=\"https:\/\/fwq.ai\/blog\/wp-content\/uploads\/2024\/11\/2012100612230422.png\" width=\"468\" height=\"86\" srcset=\"https:\/\/fwq.ai\/blog\/wp-content\/uploads\/2024\/11\/2012100612230422.png 468w, https:\/\/fwq.ai\/blog\/wp-content\/uploads\/2024\/11\/2012100612230422-300x55.png 300w\" sizes=\"auto, (max-width: 468px) 100vw, 468px\" title=\"SSL\u534f\u8bae\u8be6\u89e3\u63d2\u56fe2\" alt=\"SSL\u534f\u8bae\u8be6\u89e3\u63d2\u56fe2\" \/><\/a><\/p>\n<h3><strong>\u63e1\u624b\u534f\u8bae\u76844\u4e2a\u9636\u6bb5<\/strong><\/h3>\n<p><a href=\"http:\/\/fwq.ai\/wp-content\/uploads\/2017\/03\/2012100612245751.png\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-18603\" src=\"https:\/\/fwq.ai\/blog\/wp-content\/uploads\/2024\/11\/2012100612245751.png\" width=\"692\" height=\"857\" srcset=\"https:\/\/fwq.ai\/blog\/wp-content\/uploads\/2024\/11\/2012100612245751.png 692w, https:\/\/fwq.ai\/blog\/wp-content\/uploads\/2024\/11\/2012100612245751-242x300.png 242w, https:\/\/fwq.ai\/blog\/wp-content\/uploads\/2024\/11\/2012100612245751-670x830.png 670w\" sizes=\"auto, (max-width: 692px) 100vw, 692px\" title=\"SSL\u534f\u8bae\u8be6\u89e3\u63d2\u56fe3\" alt=\"SSL\u534f\u8bae\u8be6\u89e3\u63d2\u56fe3\" \/><\/a><\/p>\n<h3>1.1 \u5efa\u7acb\u5b89\u5168\u80fd\u529b<\/h3>\n<p>SSL\u63e1\u624b\u7684\u7b2c\u4e00\u9636\u6bb5\u542f\u52a8\u903b\u8f91\u8fde\u63a5\uff0c\u5efa\u7acb\u8fd9\u4e2a\u8fde\u63a5\u7684\u5b89\u5168\u80fd\u529b\u3002\u9996\u5148\u5ba2\u6237\u673a\u5411\u670d\u52a1\u5668\u53d1\u51faclient hello\u6d88\u606f\u5e76\u7b49\u5f85\u670d\u52a1\u5668\u54cd\u5e94\uff0c\u968f\u540e\u670d\u52a1\u5668\u5411\u5ba2\u6237\u673a\u8fd4\u56deserver hello\u6d88\u606f\uff0c\u5bf9client hello\u6d88\u606f\u4e2d\u7684\u4fe1\u606f\u8fdb\u884c\u786e\u8ba4\u3002Client hello\u6d88\u606f\u5305\u62ecVersion\uff0cRandom\uff0cSession id\uff0cCipher suite\uff0cCompression method\u7b49\u4fe1\u606f\u3002<\/p>\n<p><a href=\"http:\/\/fwq.ai\/wp-content\/uploads\/2017\/03\/2012100612260747.png\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-18605\" src=\"https:\/\/fwq.ai\/blog\/wp-content\/uploads\/2024\/11\/2012100612260747.png\" width=\"573\" height=\"446\" srcset=\"https:\/\/fwq.ai\/blog\/wp-content\/uploads\/2024\/11\/2012100612260747.png 573w, https:\/\/fwq.ai\/blog\/wp-content\/uploads\/2024\/11\/2012100612260747-300x234.png 300w\" sizes=\"auto, (max-width: 573px) 100vw, 573px\" title=\"SSL\u534f\u8bae\u8be6\u89e3\u63d2\u56fe4\" alt=\"SSL\u534f\u8bae\u8be6\u89e3\u63d2\u56fe4\" \/><\/a><\/p>\n<p><strong>ClientHello \u5ba2\u6237\u53d1\u9001CilentHello\u4fe1\u606f\uff0c\u5305\u542b\u5982\u4e0b\u5185\u5bb9\uff1a<\/strong><\/p>\n<ol>\n<li>\u5ba2\u6237\u7aef\u53ef\u4ee5\u652f\u6301\u7684SSL\u6700\u9ad8\u7248\u672c\u53f7<\/li>\n<li>\u4e00\u4e2a\u7528\u4e8e\u751f\u6210\u4e3b\u79d8\u94a5\u768432\u5b57\u8282\u7684\u968f\u673a\u6570\u3002\uff08\u7b49\u4f1a\u4ecb\u7ecd\u4e3b\u79d8\u94a5\u662f\u4ec0\u4e48\uff09<\/li>\n<li>\u4e00\u4e2a\u786e\u5b9a\u4f1a\u8bdd\u7684\u4f1a\u8bddID\u3002<\/li>\n<li>\u4e00\u4e2a\u5ba2\u6237\u7aef\u53ef\u4ee5\u652f\u6301\u7684\u5bc6\u7801\u5957\u4ef6\u5217\u8868\u3002\u5bc6\u7801\u5957\u4ef6\u683c\u5f0f\uff1a\u6bcf\u4e2a\u5957\u4ef6\u90fd\u4ee5\u201cSSL\u201d\u5f00\u5934\uff0c\u7d27\u8ddf\u7740\u7684\u662f\u5bc6\u94a5\u4ea4\u6362\u7b97\u6cd5\u3002\u7528\u201cWith\u201d\u8fd9\u4e2a\u8bcd\u628a\u5bc6\u94a5\u4ea4\u6362\u7b97\u6cd5\u3001\u52a0\u5bc6\u7b97\u6cd5\u3001\u6563\u5217\u7b97\u6cd5\u5206\u5f00\uff0c\u4f8b\u5982\uff1a<br \/>\nSSL_DHE_RSA_WITH_DES_CBC_SHA, \u8868\u793a\u628aDHE_RSA(\u5e26\u6709RSA\u6570\u5b57\u7b7e\u540d\u7684\u6682\u65f6Diffie-HellMan)\u5b9a\u4e49\u4e3a\u5bc6\u94a5\u4ea4\u6362\u7b97\u6cd5\uff1b\u628aDES_CBC\u5b9a\u4e49\u4e3a\u52a0\u5bc6\u7b97\u6cd5\uff1b\u628aSHA\u5b9a\u4e49\u4e3a\u6563\u5217\u7b97\u6cd5\u3002<\/li>\n<li>\u4e00\u4e2a\u5ba2\u6237\u7aef\u53ef\u4ee5\u652f\u6301\u7684\u538b\u7f29\u7b97\u6cd5\u5217\u8868\u3002<\/li>\n<\/ol>\n<p><strong>ServerHello\u670d\u52a1\u5668\u7528ServerHello\u4fe1\u606f\u5e94\u7b54\u5ba2\u6237\uff0c\u5305\u62ec\u4e0b\u5217\u5185\u5bb9<\/strong><\/p>\n<ol>\n<li>\u4e00\u4e2aSSL\u7248\u672c\u53f7\u3002\u53d6\u5ba2\u6237\u7aef\u652f\u6301\u7684\u6700\u9ad8\u7248\u672c\u53f7\u548c\u670d\u52a1\u7aef\u652f\u6301\u7684\u6700\u9ad8\u7248\u672c\u53f7\u4e2d\u7684\u8f83\u4f4e\u8005\u3002<\/li>\n<li>\u4e00\u4e2a\u7528\u4e8e\u751f\u6210\u4e3b\u79d8\u94a5\u768432\u5b57\u8282\u7684\u968f\u673a\u6570\u3002\uff08\u5ba2\u6237\u7aef\u4e00\u4e2a\u3001\u670d\u52a1\u7aef\u4e00\u4e2a\uff09<\/li>\n<li>\u4f1a\u8bddID<\/li>\n<li>\u4ece\u5ba2\u6237\u7aef\u7684\u5bc6\u7801\u5957\u4ef6\u5217\u8868\u4e2d\u9009\u62e9\u7684\u4e00\u4e2a\u5bc6\u7801\u5957\u4ef6<\/li>\n<li>\u4ece\u5ba2\u6237\u7aef\u7684\u538b\u7f29\u65b9\u6cd5\u7684\u5217\u8868\u4e2d\u9009\u62e9\u7684\u538b\u7f29\u65b9\u6cd5<\/li>\n<\/ol>\n<p>\u8fd9\u4e2a\u9636\u6bb5\u4e4b\u540e\uff0c\u5ba2\u6237\u7aef\u670d\u52a1\u7aef\u77e5\u9053\u4e86\u4e0b\u5217\u5185\u5bb9\uff1a<\/p>\n<pre>\uff081\uff09SSL\u7248\u672c\r\n\uff082\uff09\u5bc6\u94a5\u4ea4\u6362\u3001\u4fe1\u606f\u9a8c\u8bc1\u548c\u52a0\u5bc6\u7b97\u6cd5\r\n\uff083\uff09\u538b\u7f29\u65b9\u6cd5\r\n\uff084\uff09\u6709\u5173\u5bc6\u94a5\u751f\u6210\u7684\u4e24\u4e2a\u968f\u673a\u6570\u3002<\/pre>\n<h3><strong>1.2 \u670d\u52a1\u5668\u9274\u522b\u4e0e\u5bc6\u94a5\u4ea4\u6362<\/strong><\/h3>\n<p>\u670d\u52a1\u5668\u542f\u52a8SSL\u63e1\u624b\u7b2c2\u9636\u6bb5\uff0c\u662f\u672c\u9636\u6bb5\u6240\u6709\u6d88\u606f\u7684\u552f\u4e00\u53d1\u9001\u65b9\uff0c\u5ba2\u6237\u673a\u662f\u6240\u6709\u6d88\u606f\u7684\u552f\u4e00\u63a5\u6536\u65b9\u3002\u8be5\u9636\u6bb5\u5206\u4e3a4\u6b65\uff1a<\/p>\n<ol>\n<li>\u8bc1\u4e66\uff1a\u670d\u52a1\u5668\u5c06\u6570\u5b57\u8bc1\u4e66\u548c\u5230\u6839CA\u6574\u4e2a\u94fe\u53d1\u7ed9\u5ba2\u6237\u7aef\uff0c\u4f7f\u5ba2\u6237\u7aef\u80fd\u7528\u670d\u52a1\u5668\u8bc1\u4e66\u4e2d\u7684\u670d\u52a1\u5668\u516c\u94a5\u8ba4\u8bc1\u670d\u52a1\u5668\u3002<\/li>\n<li>\u670d\u52a1\u5668\u5bc6\u94a5\u4ea4\u6362\uff08\u53ef\u9009\uff09\uff1a\u8fd9\u91cc\u89c6\u5bc6\u94a5\u4ea4\u6362\u7b97\u6cd5\u800c\u5b9a<\/li>\n<li>\u8bc1\u4e66\u8bf7\u6c42\uff1a\u670d\u52a1\u7aef\u53ef\u80fd\u4f1a\u8981\u6c42\u5ba2\u6237\u81ea\u8eab\u8fdb\u884c\u9a8c\u8bc1\u3002<\/li>\n<li>\u670d\u52a1\u5668\u63e1\u624b\u5b8c\u6210\uff1a\u7b2c\u4e8c\u9636\u6bb5\u7684\u7ed3\u675f\uff0c\u7b2c\u4e09\u9636\u6bb5\u5f00\u59cb\u7684\u4fe1\u53f7<\/li>\n<\/ol>\n<p><a href=\"http:\/\/fwq.ai\/wp-content\/uploads\/2017\/03\/2012100612301258.png\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-18608\" src=\"https:\/\/fwq.ai\/blog\/wp-content\/uploads\/2024\/11\/2012100612301258.png\" width=\"854\" height=\"645\" srcset=\"https:\/\/fwq.ai\/blog\/wp-content\/uploads\/2024\/11\/2012100612301258.png 854w, https:\/\/fwq.ai\/blog\/wp-content\/uploads\/2024\/11\/2012100612301258-300x227.png 300w, https:\/\/fwq.ai\/blog\/wp-content\/uploads\/2024\/11\/2012100612301258-768x580.png 768w, https:\/\/fwq.ai\/blog\/wp-content\/uploads\/2024\/11\/2012100612301258-670x506.png 670w\" sizes=\"auto, (max-width: 854px) 100vw, 854px\" title=\"SSL\u534f\u8bae\u8be6\u89e3\u63d2\u56fe5\" alt=\"SSL\u534f\u8bae\u8be6\u89e3\u63d2\u56fe5\" \/><\/a><\/p>\n<p>\u8fd9\u91cc\u91cd\u70b9\u4ecb\u7ecd\u4e00\u4e0b\u670d\u52a1\u7aef\u7684\u9a8c\u8bc1\u548c\u5bc6\u94a5\u4ea4\u6362\u3002\u8fd9\u4e2a\u9636\u6bb5\u7684\u524d\u9762\u7684\uff08a\uff09\u8bc1\u4e66 \u548c\uff08b\uff09\u670d\u52a1\u5668\u5bc6\u94a5\u4ea4\u6362\u662f\u57fa\u4e8e\u5bc6\u94a5\u4ea4\u6362\u65b9\u6cd5\u7684\u3002\u800c\u5728SSL\u4e2d\u5bc6\u94a5\u4ea4\u6362\u7b97\u6cd5\u67096\u79cd\uff1a\u65e0\u6548\uff08\u6ca1\u6709\u5bc6\u94a5\u4ea4\u6362\uff09\u3001RSA\u3001\u533f\u540dDiffie-Hellman\u3001\u6682\u65f6Diffie-Hellman\u3001\u56fa\u5b9aDiffie-Hellman\u3001Fortezza\u3002<\/p>\n<p>\u5728\u9636\u6bb51\u8fc7\u7a0b\u5ba2\u6237\u7aef\u4e0e\u670d\u52a1\u7aef\u534f\u5546\u7684\u8fc7\u7a0b\u4e2d\u5df2\u7ecf\u786e\u5b9a\u4f7f\u54ea\u79cd\u5bc6\u94a5\u4ea4\u6362\u7b97\u6cd5\u3002<\/p>\n<p>\u5982\u679c\u534f\u5546\u8fc7\u7a0b\u4e2d\u786e\u5b9a\u4f7f\u7528RSA\u4ea4\u6362\u5bc6\u94a5\uff0c\u90a3\u4e48\u8fc7\u7a0b\u5982\u4e0b\u56fe\uff1a<\/p>\n<p><a href=\"http:\/\/fwq.ai\/wp-content\/uploads\/2017\/03\/2012100613112485.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-18609\" src=\"https:\/\/fwq.ai\/blog\/wp-content\/uploads\/2024\/11\/2012100613112485-300x176-1.jpg\" width=\"300\" height=\"176\" title=\"SSL\u534f\u8bae\u8be6\u89e3\u63d2\u56fe6\" alt=\"SSL\u534f\u8bae\u8be6\u89e3\u63d2\u56fe6\" \/><\/a><\/p>\n<p>\u8fd9\u4e2a\u65b9\u6cd5\u4e2d\uff0c\u670d\u52a1\u5668\u5728\u5b83\u7684\u7b2c\u4e00\u4e2a\u4fe1\u606f\u4e2d\uff0c\u53d1\u9001\u4e86RSA\u52a0\u5bc6\/\u89e3\u5bc6\u516c\u94a5\u8bc1\u4e66\u3002\u4e0d\u8fc7\uff0c\u56e0\u4e3a\u9884\u5907\u4e3b\u79d8\u94a5\u662f\u7531\u5ba2\u6237\u7aef\u5728\u4e0b\u4e00\u4e2a\u9636\u6bb5\u751f\u6210\u5e76\u53d1\u9001\u7684\uff0c\u6240\u4ee5\u7b2c\u4e8c\u4e2a\u4fe1\u606f\u662f\u7a7a\u7684\u3002\u6ce8\u610f\uff0c\u516c\u94a5\u8bc1\u4e66\u4f1a\u8fdb\u884c\u4ece\u670d\u52a1\u5668\u5230\u5ba2\u6237\u7aef\u7684\u9a8c\u8bc1\u3002\u5f53\u670d\u52a1\u5668\u6536\u5230\u9884\u5907\u4e3b\u79d8\u5bc6\u65f6\uff0c\u5b83\u4f7f\u7528\u79c1\u94a5\u8fdb\u884c\u89e3\u5bc6\u3002\u670d\u52a1\u7aef\u62e5\u6709\u79c1\u94a5\u662f\u4e00\u4e2a\u8bc1\u636e\uff0c\u53ef\u4ee5\u8bc1\u660e\u670d\u52a1\u5668\u662f\u4e00\u4e2a\u5b83\u5728\u7b2c\u4e00\u4e2a\u4fe1\u606f\u53d1\u9001\u7684\u516c\u94a5\u8bc1\u4e66\u4e2d\u8981\u6c42\u7684\u5b9e\u4f53\u3002<\/p>\n<p>\u5176\u4ed6\u7684\u51e0\u79cd\u5bc6\u94a5\u4ea4\u6362\u7b97\u6cd5\u8fd9\u91cc\u5c31\u4e0d\u4ecb\u7ecd\u4e86\u3002\u53ef\u4ee5\u53c2\u8003Behrouz A.Forouzan\u8457\u7684\u300a\u5bc6\u7801\u5b66\u4e0e\u7f51\u7edc\u5b89\u5168\u300b\u3002<\/p>\n<h3>1.3 \u5ba2\u6237\u673a\u9274\u522b\u4e0e\u5bc6\u94a5\u4ea4\u6362\uff1a<\/h3>\n<p><a href=\"http:\/\/fwq.ai\/wp-content\/uploads\/2017\/03\/2012100613423568.png\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-18610\" src=\"https:\/\/fwq.ai\/blog\/wp-content\/uploads\/2024\/11\/2012100613423568.png\" width=\"718\" height=\"446\" srcset=\"https:\/\/fwq.ai\/blog\/wp-content\/uploads\/2024\/11\/2012100613423568.png 718w, https:\/\/fwq.ai\/blog\/wp-content\/uploads\/2024\/11\/2012100613423568-300x186.png 300w, https:\/\/fwq.ai\/blog\/wp-content\/uploads\/2024\/11\/2012100613423568-670x416.png 670w\" sizes=\"auto, (max-width: 718px) 100vw, 718px\" title=\"SSL\u534f\u8bae\u8be6\u89e3\u63d2\u56fe7\" alt=\"SSL\u534f\u8bae\u8be6\u89e3\u63d2\u56fe7\" \/><\/a><\/p>\n<p>\u5ba2\u6237\u673a\u542f\u52a8SSL\u63e1\u624b\u7b2c3\u9636\u6bb5\uff0c\u662f\u672c\u9636\u6bb5\u6240\u6709\u6d88\u606f\u7684\u552f\u4e00\u53d1\u9001\u65b9\uff0c\u670d\u52a1\u5668\u662f\u6240\u6709\u6d88\u606f\u7684\u552f\u4e00\u63a5\u6536\u65b9\u3002\u8be5\u9636\u6bb5\u5206\u4e3a3\u6b65\uff1a<\/p>\n<ol>\n<li>\u8bc1\u4e66\uff08\u53ef\u9009\uff09\uff1a\u4e3a\u4e86\u5bf9\u670d\u52a1\u5668\u8bc1\u660e\u81ea\u8eab\uff0c\u5ba2\u6237\u8981\u53d1\u9001\u4e00\u4e2a\u8bc1\u4e66\u4fe1\u606f\uff0c\u8fd9\u662f\u53ef\u9009\u7684\uff0c\u5728IIS\u4e2d\u53ef\u4ee5\u914d\u7f6e\u5f3a\u5236\u5ba2\u6237\u7aef\u8bc1\u4e66\u8ba4\u8bc1\u3002<\/li>\n<li>\u5ba2\u6237\u673a\u5bc6\u94a5\u4ea4\u6362\uff08Pre-master-secret\uff09\uff1a\u8fd9\u91cc\u5ba2\u6237\u7aef\u5c06\u9884\u5907\u4e3b\u5bc6\u94a5\u53d1\u9001\u7ed9\u670d\u52a1\u7aef\uff0c\u6ce8\u610f\u8fd9\u91cc\u4f1a\u4f7f\u7528\u670d\u52a1\u7aef\u7684\u516c\u94a5\u8fdb\u884c\u52a0\u5bc6\u3002<\/li>\n<li>\u8bc1\u4e66\u9a8c\u8bc1\uff08\u53ef\u9009\uff09\uff0c\u5bf9\u9884\u5907\u79d8\u5bc6\u548c\u968f\u673a\u6570\u8fdb\u884c\u7b7e\u540d\uff0c\u8bc1\u660e\u62e5\u6709\uff08a\uff09\u8bc1\u4e66\u7684\u516c\u94a5\u3002<\/li>\n<\/ol>\n<p>\u4e0b\u9762\u4e5f\u91cd\u70b9\u4ecb\u7ecd\u4e00\u4e0bRSA\u65b9\u5f0f\u7684\u5ba2\u6237\u7aef\u9a8c\u8bc1\u548c\u5bc6\u94a5\u4ea4\u6362\u3002<\/p>\n<p>\u8fd9\u79cd\u60c5\u51b5\uff0c\u9664\u975e\u670d\u52a1\u5668\u5728\u9636\u6bb5II\u660e\u786e\u8bf7\u6c42\uff0c\u5426\u5219\u6ca1\u6709\u8bc1\u4e66\u4fe1\u606f\u3002\u5ba2\u6237\u7aef\u5bc6\u94a5\u4ea4\u6362\u65b9\u6cd5\u5305\u62ec\u9636\u6bb5II\u6536\u5230\u7684\u7531RSA\u516c\u94a5\u52a0\u5bc6\u7684\u9884\u5907\u4e3b\u5bc6\u94a5\u3002<\/p>\n<p>\u9636\u6bb5III\u4e4b\u540e\uff0c\u5ba2\u6237\u8981\u6709\u670d\u52a1\u5668\u8fdb\u884c\u9a8c\u8bc1\uff0c\u5ba2\u6237\u548c\u670d\u52a1\u5668\u90fd\u77e5\u9053\u9884\u5907\u4e3b\u5bc6\u94a5\u3002<\/p>\n<h3><strong>1.4 \u5b8c\u6210<\/strong><\/h3>\n<p><a href=\"http:\/\/fwq.ai\/wp-content\/uploads\/2017\/03\/2012100613593310.png\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-18611\" src=\"https:\/\/fwq.ai\/blog\/wp-content\/uploads\/2024\/11\/2012100613593310.png\" width=\"865\" height=\"552\" srcset=\"https:\/\/fwq.ai\/blog\/wp-content\/uploads\/2024\/11\/2012100613593310.png 865w, https:\/\/fwq.ai\/blog\/wp-content\/uploads\/2024\/11\/2012100613593310-300x191.png 300w, https:\/\/fwq.ai\/blog\/wp-content\/uploads\/2024\/11\/2012100613593310-768x490.png 768w, https:\/\/fwq.ai\/blog\/wp-content\/uploads\/2024\/11\/2012100613593310-670x428.png 670w\" sizes=\"auto, (max-width: 865px) 100vw, 865px\" title=\"SSL\u534f\u8bae\u8be6\u89e3\u63d2\u56fe8\" alt=\"SSL\u534f\u8bae\u8be6\u89e3\u63d2\u56fe8\" \/><\/a><\/p>\n<p>\u5ba2\u6237\u673a\u542f\u52a8SSL\u63e1\u624b\u7b2c4\u9636\u6bb5\uff0c\u4f7f\u670d\u52a1\u5668\u7ed3\u675f\u3002\u8be5\u9636\u6bb5\u5206\u4e3a4\u6b65\uff0c\u524d2\u4e2a\u6d88\u606f\u6765\u81ea\u5ba2\u6237\u673a\uff0c\u540e2\u4e2a\u6d88\u606f\u6765\u81ea\u670d\u52a1\u5668\u3002<\/p>\n<h3><strong>1.5 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href=\"http:\/\/fwq.ai\/wp-content\/uploads\/2017\/03\/2012100614034612.png\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-18612\" src=\"https:\/\/fwq.ai\/blog\/wp-content\/uploads\/2024\/11\/2012100614034612.png\" width=\"909\" height=\"633\" srcset=\"https:\/\/fwq.ai\/blog\/wp-content\/uploads\/2024\/11\/2012100614034612.png 909w, https:\/\/fwq.ai\/blog\/wp-content\/uploads\/2024\/11\/2012100614034612-300x209.png 300w, https:\/\/fwq.ai\/blog\/wp-content\/uploads\/2024\/11\/2012100614034612-768x535.png 768w, https:\/\/fwq.ai\/blog\/wp-content\/uploads\/2024\/11\/2012100614034612-670x467.png 670w\" sizes=\"auto, (max-width: 909px) 100vw, 909px\" title=\"SSL\u534f\u8bae\u8be6\u89e3\u63d2\u56fe9\" alt=\"SSL\u534f\u8bae\u8be6\u89e3\u63d2\u56fe9\" \/><\/a><a href=\"http:\/\/fwq.ai\/wp-content\/uploads\/2017\/03\/2012100614043315.png\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-18613\" src=\"https:\/\/fwq.ai\/blog\/wp-content\/uploads\/2024\/11\/2012100614043315.png\" width=\"882\" height=\"515\" srcset=\"https:\/\/fwq.ai\/blog\/wp-content\/uploads\/2024\/11\/2012100614043315.png 882w, https:\/\/fwq.ai\/blog\/wp-content\/uploads\/2024\/11\/2012100614043315-300x175.png 300w, https:\/\/fwq.ai\/blog\/wp-content\/uploads\/2024\/11\/2012100614043315-768x448.png 768w, https:\/\/fwq.ai\/blog\/wp-content\/uploads\/2024\/11\/2012100614043315-670x391.png 670w\" sizes=\"auto, (max-width: 882px) 100vw, 882px\" title=\"SSL\u534f\u8bae\u8be6\u89e3\u63d2\u56fe10\" alt=\"SSL\u534f\u8bae\u8be6\u89e3\u63d2\u56fe10\" \/><\/a><a href=\"http:\/\/fwq.ai\/wp-content\/uploads\/2017\/03\/2012100614050172.png\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-18614\" src=\"https:\/\/fwq.ai\/blog\/wp-content\/uploads\/2024\/11\/2012100614050172.png\" width=\"997\" height=\"449\" srcset=\"https:\/\/fwq.ai\/blog\/wp-content\/uploads\/2024\/11\/2012100614050172.png 997w, https:\/\/fwq.ai\/blog\/wp-content\/uploads\/2024\/11\/2012100614050172-300x135.png 300w, https:\/\/fwq.ai\/blog\/wp-content\/uploads\/2024\/11\/2012100614050172-768x346.png 768w, https:\/\/fwq.ai\/blog\/wp-content\/uploads\/2024\/11\/2012100614050172-670x302.png 670w\" sizes=\"auto, (max-width: 997px) 100vw, 997px\" title=\"SSL\u534f\u8bae\u8be6\u89e3\u63d2\u56fe11\" alt=\"SSL\u534f\u8bae\u8be6\u89e3\u63d2\u56fe11\" \/><\/a><\/p>\n<h3>2\u3001\u8bb0\u5f55\u534f\u8bae<\/h3>\n<p>\u8bb0\u5f55\u534f\u8bae\u5728\u5ba2\u6237\u673a\u548c\u670d\u52a1\u5668\u63e1\u624b\u6210\u529f\u540e\u4f7f\u7528\uff0c\u5373\u5ba2\u6237\u673a\u548c\u670d\u52a1\u5668\u9274\u522b\u5bf9\u65b9\u548c\u786e\u5b9a\u5b89\u5168\u4fe1\u606f\u4ea4\u6362\u4f7f\u7528\u7684\u7b97\u6cd5\u540e\uff0c\u8fdb\u5165SSL\u8bb0\u5f55\u534f\u8bae\uff0c\u8bb0\u5f55\u534f\u8bae\u5411SSL\u8fde\u63a5\u63d0\u4f9b\u4e24\u4e2a\u670d\u52a1\uff1a<\/p>\n<ol>\n<li>\u4fdd\u5bc6\u6027\uff1a\u4f7f\u7528\u63e1\u624b\u534f\u8bae\u5b9a\u4e49\u7684\u79d8\u5bc6\u5bc6\u94a5\u5b9e\u73b0<\/li>\n<li>\u5b8c\u6574\u6027\uff1a\u63e1\u624b\u534f\u8bae\u5b9a\u4e49\u4e86MAC\uff0c\u7528\u4e8e\u4fdd\u8bc1\u6d88\u606f\u5b8c\u6574\u6027<\/li>\n<\/ol>\n<p>\u8bb0\u5f55\u534f\u8bae\u7684\u8fc7\u7a0b\uff1a<\/p>\n<p><a href=\"http:\/\/fwq.ai\/wp-content\/uploads\/2017\/03\/2012100614074631.png\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-18615\" src=\"https:\/\/fwq.ai\/blog\/wp-content\/uploads\/2024\/11\/2012100614074631.png\" width=\"656\" height=\"376\" srcset=\"https:\/\/fwq.ai\/blog\/wp-content\/uploads\/2024\/11\/2012100614074631.png 656w, https:\/\/fwq.ai\/blog\/wp-content\/uploads\/2024\/11\/2012100614074631-300x172.png 300w\" sizes=\"auto, (max-width: 656px) 100vw, 656px\" title=\"SSL\u534f\u8bae\u8be6\u89e3\u63d2\u56fe12\" alt=\"SSL\u534f\u8bae\u8be6\u89e3\u63d2\u56fe12\" \/><\/a><\/p>\n<h3><strong>3\u3001\u8b66\u62a5\u534f\u8bae<\/strong><\/h3>\n<p>\u5ba2\u6237\u673a\u548c\u670d\u52a1\u5668\u53d1\u73b0\u9519\u8bef\u65f6\uff0c\u5411\u5bf9\u65b9\u53d1\u9001\u4e00\u4e2a\u8b66\u62a5\u6d88\u606f\u3002\u5982\u679c\u662f\u81f4\u547d\u9519\u8bef\uff0c\u5219\u7b97\u6cd5\u7acb\u5373\u5173\u95edSSL\u8fde\u63a5\uff0c\u53cc\u65b9\u8fd8\u4f1a\u5148\u5220\u9664\u76f8\u5173\u7684\u4f1a\u8bdd\u53f7\uff0c\u79d8\u5bc6\u548c\u5bc6\u94a5\u3002\u6bcf\u4e2a\u8b66\u62a5\u6d88\u606f\u51712\u4e2a\u5b57\u8282\uff0c\u7b2c1\u4e2a\u5b57\u8282\u8868\u793a\u9519\u8bef\u7c7b\u578b\uff0c\u5982\u679c\u662f\u8b66\u62a5\uff0c\u5219\u503c\u4e3a1\uff0c\u5982\u679c\u662f\u81f4\u547d\u9519\u8bef\uff0c\u5219\u503c\u4e3a2\uff1b\u7b2c2\u4e2a\u5b57\u8282\u5236\u5b9a\u5b9e\u9645\u9519\u8bef\u7c7b\u578b\u3002<\/p>\n<h3><strong>\u603b\u7ed3<\/strong><\/h3>\n<p>SSL\u4e2d\uff0c\u4f7f\u7528\u63e1\u624b\u534f\u8bae\u534f\u5546\u52a0\u5bc6\u548cMAC\u7b97\u6cd5\u4ee5\u53ca\u4fdd\u5bc6\u5bc6\u94a5 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1\u3001\u5bc6\u7801\u5b66\u7684\u76f8\u5173\u6982\u5ff5 \u5bc6\u7801\u5b66(cryptography)\uff1a\u76ee\u7684\u662f\u901a\u8fc7\u5c06\u4fe1\u606f\u7f16\u7801\u4f7f\u5176\u4e0d\u53ef\u8bfb\uff0c\u4ece\u800c\u8fbe\u5230\u5b89\u5168\u6027\u3002 \u660e\u6587(plain text)\uff1a\u53d1\u9001\u4eba\u3001\u63a5\u53d7\u4eba\u548c\u4efb\u4f55\u8bbf\u95ee\u6d88\u606f\u7684\u4eba\u90fd\u80fd\u7406\u89e3\u7684\u6d88\u606f\u3002 \u5bc6\u6587(cipher text)\uff1a\u660e\u6587\u6d88\u606f\u7ecf\u8fc7\u67d0\u79cd\u7f16\u7801\u540e\uff0c\u5f97\u5230\u5bc6\u6587\u6d88\u606f\u3002 \u52a0\u5bc6(encryption)\uff1a\u5c06\u660e\u6587\u6d88\u606f\u53d8\u6210\u5bc6\u6587\u6d88\u606f\u3002 \u89e3\u5bc6(decryption)\uff1a\u5c06\u5bc6\u6587\u6d88\u606f\u53d8\u6210\u660e\u6587\u6d88\u606f\u3002 \u7b97\u6cd5\uff1a\u53d6\u4e00\u4e2a\u8f93\u5165\u6587\u672c\uff0c\u4ea7\u751f\u4e00\u4e2a\u8f93\u51fa\u6587\u672c\u3002 \u52a0\u5bc6\u7b97\u6cd5\uff1a\u53d1\u9001\u65b9\u8fdb\u884c\u52a0\u5bc6\u7684\u7b97\u6cd5\u3002 \u89e3\u5bc6\u7b97\u6cd5\uff1a\u63a5\u6536\u65b9\u8fdb\u884c\u89e3\u5bc6\u7684\u7b97\u6cd5\u3002 \u5bc6\u94a5(key)\uff1a\u53ea\u6709\u53d1\u9001\u65b9\u548c\u63a5\u6536\u65b9\u7406\u89e3\u7684\u6d88\u606f \u5bf9\u79f0\u5bc6\u94a5\u52a0\u5bc6(Symmetric Key Cryptography)\uff1a\u52a0\u5bc6\u4e0e\u89e3\u5bc6\u4f7f\u7528\u76f8\u540c\u5bc6\u94a5\u3002 \u975e\u5bf9\u79f0\u5bc6\u94a5\u52a0\u5bc6(Asymmetric Key Cryptography)\uff1a\u52a0\u5bc6\u4e0e\u89e3\u5bc6\u4f7f\u7528\u4e0d\u540c\u5bc6\u94a5\u3002 2\u3001\u76f8\u5173\u7684\u52a0\u5bc6\u7b97\u6cd5\u4ecb\u7ecd DES\u7b97\u6cd5\u5373\u6570\u636e\u52a0\u5bc6\u6807\u51c6\uff0c\u4e5f\u79f0\u4e3a\u6570\u636e\u52a0\u5bc6\u7b97\u6cd5\u3002\u52a0\u5bc6\u8fc7\u7a0b\u5982\u4e0b\uff1a \u5728SSL\u4e2d\u4f1a\u7528\u5230\u5206\u7ec4DES\u3001\u4e09\u91cdDES\u7b97\u6cd5\u7b49\u52a0\u5bc6\u7b97\u6cd5\u5bf9\u6570\u636e\u8fdb\u884c\u52a0\u5bc6\u3002\u5f53\u7136\u53ef\u4ee5\u9009\u7528\u5176\u4ed6\u975eDES\u52a0\u5bc6\u7b97\u6cd5\uff0c\u89c6\u60c5\u51b5\u800c\u5b9a\uff0c\u540e\u9762\u4f1a\u8be6\u7ec6\u4ecb\u7ecd\u3002 3\u3001\u5bc6\u94a5\u4ea4\u6362\u7b97\u6cd5 \u4f7f\u7528\u5bf9\u79f0\u52a0\u5bc6\u7b97\u6cd5\u65f6\uff0c\u5bc6\u94a5\u4ea4\u6362\u662f\u4e2a\u5927\u96be\u9898\uff0c\u6240\u4ee5Diffie\u548cHellman\u63d0\u51fa\u4e86\u8457\u540d\u7684Diffie-Hellman\u5bc6\u94a5\u4ea4\u6362\u7b97\u6cd5\u3002 3.1\u3001Diffie-Hellman\u5bc6\u94a5\u4ea4\u6362\u7b97\u6cd5\u539f\u7406\uff1a 1\u3001Alice\u4e0eBob\u786e\u5b9a\u4e24\u4e2a\u5927\u7d20\u6570n\u548cg\uff0c\u8fd9\u4e24\u4e2a\u6570\u4e0d\u7528\u4fdd\u5bc6 2\u3001Alice\u9009\u62e9\u53e6\u4e00\u4e2a\u5927\u968f\u673a\u6570x\uff0c\u5e76\u8ba1\u7b97A\u5982\u4e0b\uff1aA=gx mod n 3\u3001Alice\u5c06A\u53d1\u7ed9Bob 4\u3001Bob\u9009\u62e9\u53e6\u4e00\u4e2a\u5927\u968f\u673a\u6570y\uff0c\u5e76\u8ba1\u7b97B\u5982\u4e0b\uff1aB=gy mod n 5\u3001Bob\u5c06B\u53d1\u7ed9Alice 6\u3001\u8ba1\u7b97\u79d8\u5bc6\u5bc6\u94a5K1\u5982\u4e0b\uff1aK1=Bx mod n 7\u3001\u8ba1\u7b97\u79d8\u5bc6\u5bc6\u94a5K2\u5982\u4e0b\uff1aK2=Ay mod n K1=K2\uff0c\u56e0\u6b64Alice\u548cBob\u53ef\u4ee5\u7528\u5176\u8fdb\u884c\u52a0\u89e3\u5bc6 3.2\u3001RSA\u52a0\u5bc6\u7b97\u6cd5\u539f\u7406\uff1a RSA\u52a0\u5bc6\u7b97\u6cd5\u662f\u57fa\u4e8e\u8fd9\u6837\u7684\u6570\u5b66\u4e8b\u5b9e\uff1a\u4e24\u4e2a\u5927\u7d20\u6570\u76f8\u4e58\u5bb9\u6613\uff0c\u800c\u5bf9\u5f97\u5230\u7684\u4e58\u79ef\u6c42\u56e0\u5b50\u5219\u5f88\u96be\u3002\u52a0\u5bc6\u8fc7\u7a0b\u5982\u4e0b\uff1a 1\u3001\u9009\u62e9\u4e24\u4e2a\u5927\u7d20\u6570P\u3001Q 2\u3001\u8ba1\u7b97N=P*Q 3\u3001\u9009\u62e9\u4e00\u4e2a\u516c\u94a5\uff08\u52a0\u5bc6\u5bc6\u94a5\uff09E\uff0c\u4f7f\u5176\u4e0d\u662f(P-1)\u4e0e(Q-1)\u7684\u56e0\u5b50 4\u3001\u9009\u62e9\u79c1\u94a5\uff08\u89e3\u5bc6\u5bc6\u94a5\uff09D\uff0c\u6ee1\u8db3\u5982\u4e0b\u6761\u4ef6\uff1a \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 (D*E) mod (P-1)(Q-1)=1 5\u3001\u52a0\u5bc6\u65f6\uff0c\u660e\u6587PT\u8ba1\u7b97\u5bc6\u6587CT\u5982\u4e0b\uff1a \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 CT=PTE mod 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