{"id":10007982,"date":"2023-06-25T12:37:40","date_gmt":"2023-06-25T04:37:40","guid":{"rendered":"https:\/\/ityet.com\/?p=10007982"},"modified":"2023-06-25T12:37:40","modified_gmt":"2023-06-25T04:37:40","slug":"%e4%bf%9d%e6%8a%a4%e6%95%b0%e6%8d%ae%e9%9a%90%e7%a7%81%ef%bc%9a%e6%b7%b1%e5%85%a5%e6%8e%a2%e7%b4%a2golang%e4%b8%ad%e7%9a%84sm4%e5%8a%a0%e5%af%86%e8%a7%a3%e5%af%86%e7%ae%97%e6%b3%95","status":"publish","type":"post","link":"https:\/\/itmax.cn\/?p=10007982","title":{"rendered":"\u4fdd\u62a4\u6570\u636e\u9690\u79c1\uff1a\u6df1\u5165\u63a2\u7d22Golang\u4e2d\u7684SM4\u52a0\u5bc6\u89e3\u5bc6\u7b97\u6cd5"},"content":{"rendered":"<h2>\u524d\u8a00<\/h2>\n<p>\u6700\u8fd1\u505a\u7684\u9879\u76ee\u5bf9\u5b89\u5168\u6027\u8981\u6c42\u6bd4\u8f83\u9ad8\uff0c\u7279\u522b\u5f3a\u8c03\uff1a<strong>\u7cfb\u7edf\u4e0d\u80fd\u6d89\u53caMD5\u3001SHA1\u3001RSA1024\u3001DES\u9ad8\u98ce\u9669\u7b97\u6cd5\u3002<\/strong><\/p>\n<p><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000043931634\" alt=\"\" title=\"\" loading=\"lazy\"><\/p>\n<p>\u90a3\u7528\u4ec0\u4e48\u561e\uff1f\u7532\u65b9\uff1a<strong>\u5efa\u8bae\u7528\u56fd\u4ea7\u5bc6\u7801\u7b97\u6cd5SM4\u3002<\/strong><\/p>\n<p><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000043931635\" alt=\"\" title=\"\" loading=\"lazy\"><\/p>\n<p>\u64c5\u957f\u654f\u6377\u5f00\u53d1\uff08CV\u5927\u6cd5\uff09\u7684\u6211\uff0c\u5148\u53bbGitHub\u627e\u4e86\u5f00\u6e90\u9879\u76ee\u3001\u53c8\u53bb\u7f51\u7edc\u4e0a\u627e\u4e86\u4e00\u4e9b\u6559\u7a0b\uff0c\u4f46\u662f\u6216\u591a\u6216\u5c11\u90fd\u6709\u4e9b\u95ee\u9898\uff1a<\/p>\n<ol>\n<li>\u6bd4\u5982<code>golang.org\/x\/crypto\/sm4<\/code>\u65e0\u6cd5\u5b89\u88c5\u7f16\u8bd1<\/li>\n<li>\u6bd4\u5982C\u7ad9\u70c2\u5927\u8857\u7684SM4\u6559\u7a0b\uff0c\u4e0d\u80fd\u89e3\u51b3\u6570\u636e\u586b\u5145\u7684\u95ee\u9898\uff0c\u8d85\u8fc716\u4f4d\u5c31\u89e3\u5bc6\u5931\u8d25\u4e86<\/li>\n<li>\u6bd4\u5982\u5982\u4f55\u5c01\u88c5\u6210\u901a\u7528\u7684\u65b9\u6cd5\uff0c\u4f9b\u7cfb\u7edf\u8fdb\u884c\u8c03\u7528<\/li>\n<li>\u66f4\u591a\u5c31\u662f\u590d\u5236\u7c98\u8d34\u4e86SM4\u7684\u5b9a\u4e49\uff0c\u5f88\u62bd\u8c61\u3002<\/li>\n<\/ol>\n<p>\u4e8e\u662f\u6211\u82b1\u4e862\u5929\u65f6\u95f4\u7814\u7a76SM4\u7684\u539f\u7406\u548c\u5e94\u7528\uff0c\u89e3\u51b3\u4e86\u4e0a\u9762\u8fd9\u4e9b\u95ee\u9898\uff0c\u6574\u7406\u8fd9\u7bc7\u6587\u7ae0\u5206\u4eab\u7ed9\u5927\u5bb6\uff0c\u8ba9\u5927\u5bb6\u80fd\u5c11\u8e29\u5751\u3002<\/p>\n<p><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000043931636\" alt=\"\" title=\"\" loading=\"lazy\"><\/p>\n<p>\u6211\u4f1a\u6309\u7167\u4e0b\u9762\u7684\u987a\u5e8f\u5206\u4eab\u8fd9\u7bc7\u6587\u7ae0\uff0c\u65b9\u4fbf\u5927\u5bb6\u66f4\u597d\u7684\u7406\u89e3\uff0c<strong>\u5982\u679c\u4f60\u5c31\u662f\u559c\u6b22\u62ff\u6765\u4e3b\u4e49\uff08\u654f\u6377\u5f00\u53d1\uff09\uff0c\u53ef\u4ee5\u76f4\u63a5copy\u5e95\u90e8\u7684\u793a\u4f8b\u4ee3\u7801\uff0c\u5feb\u901f\u4e0a\u624b\u4f7f\u7528\u5373\u53ef\u3002<\/strong><\/p>\n<h2>\u6587\u7ae0\u76ee\u5f55<\/h2>\n<ol>\n<li>SM4\u7684\u4f18\u52bf<\/li>\n<li>IV\u662f\u4ec0\u4e48\uff1f<\/li>\n<li>SM4\u52a0\u5bc6\u7684\u65b9\u5f0f\u548c\u539f\u7406<\/li>\n<li>SM4\u7684\u5404\u79cd\u5de5\u4f5c\u6a21\u5f0f\u5bf9\u6bd4<\/li>\n<li>\u76f4\u63a5\u53ef\u7528\u7684\u300c\u4ee3\u7801\u793a\u4f8b\u300d<\/li>\n<li>\u6838\u5fc3\u65b9\u6cd5\u7684\u6e90\u7801\u89e3\u6790<\/li>\n<li>\u603b\u7ed3\u56de\u987e<\/li>\n<\/ol>\n<h2>1. SM4\u7684\u4f18\u52bf<\/h2>\n<p>\u76f8\u6bd4\u4e8e\u5176\u4ed6\u52a0\u5bc6\u7b97\u6cd5\uff0cSM4\u52a0\u5bc6\u7b97\u6cd5\u5177\u6709\u4ee5\u4e0b\u51e0\u4e2a\u4f18\u52bf\uff1a<\/p>\n<ol>\n<li><strong>\u9ad8\u5b89\u5168\u6027<\/strong>\uff1aSM4\u662f\u4e00\u79cd\u5bf9\u79f0\u52a0\u5bc6\u7b97\u6cd5\uff0c\u91c7\u7528128\u4f4d\u5bc6\u94a5\u957f\u5ea6\uff0c\u5177\u6709\u8f83\u9ad8\u7684\u5b89\u5168\u6027\u548c\u6297\u653b\u51fb\u6027\u3002\u5b83\u7ecf\u8fc7\u4e86\u5e7f\u6cdb\u7684\u5b89\u5168\u6027\u5206\u6790\u548c\u8bc4\u4f30\uff0c\u5e76\u901a\u8fc7\u4e86\u591a\u4e2a\u5bc6\u7801\u5b66\u6807\u51c6\u7684\u9a8c\u8bc1\u3002<\/li>\n<li><strong>\u9ad8\u6548\u6027<\/strong>\uff1aSM4\u7b97\u6cd5\u7684\u52a0\u5bc6\u548c\u89e3\u5bc6\u901f\u5ea6\u8f83\u5feb\uff0c\u9002\u7528\u4e8e\u5bf9\u5927\u91cf\u6570\u636e\u8fdb\u884c\u52a0\u5bc6\u548c\u89e3\u5bc6\u7684\u573a\u666f\u3002\u5b83\u5728\u786c\u4ef6\u548c\u8f6f\u4ef6\u5b9e\u73b0\u4e0a\u90fd\u5177\u6709\u9ad8\u6548\u6027\u80fd\u3002<\/li>\n<li><strong>\u7b80\u5355\u6027<\/strong>\uff1aSM4\u7b97\u6cd5\u7684\u5b9e\u73b0\u76f8\u5bf9\u7b80\u5355\uff0c\u4ee3\u7801\u91cf\u8f83\u5c0f\uff0c\u6613\u4e8e\u7406\u89e3\u548c\u4f7f\u7528\u3002\u5b83\u7684\u8bbe\u8ba1\u76ee\u6807\u4e4b\u4e00\u662f\u63d0\u4f9b\u4e00\u79cd\u6613\u4e8e\u5b9e\u73b0\u548c\u90e8\u7f72\u7684\u52a0\u5bc6\u7b97\u6cd5\u3002<\/li>\n<li><strong>\u6807\u51c6\u5316<\/strong>\uff1a<strong>SM4\u7b97\u6cd5\u662f\u4e2d\u56fd\u56fd\u5bb6\u5bc6\u7801\u7ba1\u7406\u5c40\u53d1\u5e03\u7684\u5bc6\u7801\u7b97\u6cd5\u6807\u51c6\uff0c\u5f97\u5230\u4e86\u5e7f\u6cdb\u7684\u5e94\u7528\u548c\u8ba4\u53ef\u3002\u5b83\u5df2\u6210\u4e3a\u56fd\u9645\u4e0a\u516c\u8ba4\u7684\u5bc6\u7801\u7b97\u6cd5\u4e4b\u4e00\u3002<\/strong><\/li>\n<li>\u5e7f\u6cdb\u652f\u6301\uff1a<strong>SM4\u7b97\u6cd5\u5728\u5404\u79cd\u5e73\u53f0\u548c\u7f16\u7a0b\u8bed\u8a00\u4e2d\u90fd\u6709\u652f\u6301\u548c\u5b9e\u73b0\uff0c\u5305\u62ecGo\u3001Java\u3001C\/C++\u7b49<\/strong>\u3002\u5b83\u53ef\u4ee5\u5728\u4e0d\u540c\u7684\u7cfb\u7edf\u548c\u73af\u5883\u4e2d\u8fdb\u884c\u8de8\u5e73\u53f0\u7684\u5e94\u7528\u548c\u90e8\u7f72\u3002<\/li>\n<li>\u53ef\u6269\u5c55\u6027\uff1aSM4\u7b97\u6cd5\u652f\u6301\u4e0d\u540c\u7684\u5de5\u4f5c\u6a21\u5f0f\u548c\u586b\u5145\u65b9\u5f0f\uff0c\u53ef\u4ee5\u6839\u636e\u5177\u4f53\u9700\u6c42\u8fdb\u884c\u7075\u6d3b\u914d\u7f6e\u3002\u5b83\u53ef\u4ee5\u4e0e\u5176\u4ed6\u5bc6\u7801\u7b97\u6cd5\u7ed3\u5408\u4f7f\u7528\uff0c\u63d0\u4f9b\u66f4\u9ad8\u7ea7\u522b\u7684\u5b89\u5168\u4fdd\u62a4\u3002<\/li>\n<\/ol>\n<p>\u5c0f\u5c0f\u7684\u603b\u7ed3\u4e00\u4e0b\uff1a<strong>SM4\u52a0\u5bc6\u7b97\u6cd5\u5728\u5b89\u5168\u6027\u3001\u9ad8\u6548\u6027\u3001\u7b80\u5355\u6027\u3001\u6807\u51c6\u5316\u548c\u5e7f\u6cdb\u652f\u6301\u7b49\u65b9\u9762\u5177\u6709\u4f18\u52bf\uff0c\u9002\u7528\u4e8e\u5404\u79cd\u6570\u636e\u4fdd\u62a4\u548c\u52a0\u5bc6\u5e94\u7528\u573a\u666f\u3002\u5b83\u662f\u4e00\u79cd\u53ef\u9760\u7684\u52a0\u5bc6\u7b97\u6cd5\u9009\u62e9\u3002<\/strong><\/p>\n<h2>2.IV\u662f\u4ec0\u4e48\uff1f<\/h2>\n<p>\u6211\u5728\u5b66\u4e60\u7684\u65f6\u5019\u770b\u5230IV\u5c31\u8499\u4e86\uff0c\u6240\u4ee5\u6709\u5fc5\u8981\u5148\u8bf4\u6e05\u695aIV\u7684\u6982\u5ff5\uff1a<\/p>\n<p><strong>Initialization Vector\uff08IV\uff09\u662f\u4e00\u79cd\u5728\u5bc6\u7801\u5b66\u4e2d\u4f7f\u7528\u7684\u521d\u59cb\u503c\u3002\u5b83\u662f\u4e00\u4e2a\u56fa\u5b9a\u957f\u5ea6\u7684\u968f\u673a\u6570\u6216\u8005\u968f\u673a\u751f\u6210\u7684\u503c\uff0c\u7528\u4e8e\u5728\u52a0\u5bc6\u7b97\u6cd5\u4e2d\u521d\u59cb\u5316\u5bc6\u7801\u7b97\u6cd5\u7684\u72b6\u6001\u3002<\/strong><\/p>\n<p><strong>\u5728\u52a0\u5bc6\u8fc7\u7a0b\u4e2d\uff0cIV\u7684\u4f5c\u7528\u662f\u5f15\u5165\u968f\u673a\u6027\u548c\u552f\u4e00\u6027\uff0c\u4ee5\u589e\u52a0\u52a0\u5bc6\u7684\u5b89\u5168\u6027\u3002<\/strong> \u5b83\u4e0e\u5bc6\u94a5\u4e00\u8d77\u7528\u4e8e\u521d\u59cb\u5316\u5bc6\u7801\u7b97\u6cd5\u7684\u5185\u90e8\u72b6\u6001\uff0c<strong>\u786e\u4fdd\u6bcf\u6b21\u52a0\u5bc6\u64cd\u4f5c\u90fd\u4ea7\u751f\u4e0d\u540c\u7684\u8f93\u51fa\uff0c\u5373\u4f7f\u76f8\u540c\u7684\u660e\u6587\u4f7f\u7528\u76f8\u540c\u7684\u5bc6\u94a5\u8fdb\u884c\u52a0\u5bc6\u3002<\/strong><\/p>\n<p>IV\u7684\u957f\u5ea6\u548c\u4f7f\u7528\u65b9\u5f0f\u53d6\u51b3\u4e8e\u5177\u4f53\u7684\u52a0\u5bc6\u7b97\u6cd5\u548c\u5e94\u7528\u573a\u666f\u3002\u5728\u4f7f\u7528\u52a0\u5bc6\u7b97\u6cd5\u65f6\uff0cIV\u901a\u5e38\u9700\u8981\u4e0e\u5bc6\u6587\u4e00\u8d77\u4f20\u8f93\u7ed9\u89e3\u5bc6\u65b9\uff0c\u4ee5\u4fbf\u89e3\u5bc6\u65b9\u80fd\u591f\u6b63\u786e\u8fd8\u539f\u660e\u6587\u3002<\/p>\n<p>\u9700\u8981\u6ce8\u610f\u7684\u662f\uff1a<strong>IV\u672c\u8eab\u4e0d\u9700\u8981\u4fdd\u5bc6\uff0c\u53ef\u4ee5\u4e0e\u5bc6\u6587\u4e00\u8d77\u4f20\u8f93\u3002\u7136\u800c\uff0c\u4e3a\u4e86\u786e\u4fdd\u52a0\u5bc6\u7684\u5b89\u5168\u6027\uff0cIV\u5e94\u8be5\u662f\u968f\u673a\u751f\u6210\u7684\uff0c\u5e76\u4e14\u6bcf\u6b21\u52a0\u5bc6\u64cd\u4f5c\u90fd\u5e94\u8be5\u4f7f\u7528\u4e0d\u540c\u7684IV\u3002\u8fd9\u6837\u53ef\u4ee5\u9632\u6b62\u5bc6\u7801\u5206\u6790\u8005\u901a\u8fc7\u89c2\u5bdf\u52a0\u5bc6\u7ed3\u679c\u7684\u6a21\u5f0f\u6765\u7834\u89e3\u5bc6\u94a5\u6216\u8005\u660e\u6587\u3002<\/strong><\/p>\n<p><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000043931637\" alt=\"\" title=\"\" loading=\"lazy\"><\/p>\n<h2>3. SM4\u52a0\u5bc6\u7684\u65b9\u5f0f\u548c\u539f\u7406<\/h2>\n<p>SM4\u52a0\u5bc6\u7b97\u6cd5\u662f\u4e00\u79cd\u5bf9\u79f0\u52a0\u5bc6\u7b97\u6cd5\uff0c\u91c7\u7528\u5206\u7ec4\u5bc6\u7801\u7684\u65b9\u5f0f\u5bf9\u6570\u636e\u8fdb\u884c\u52a0\u5bc6\u3002<\/p>\n<p>\u4e0b\u9762\u662fSM4\u52a0\u5bc6\u7684\u65b9\u5f0f\u548c\u539f\u7406\u7684\u7b80\u8981\u8bf4\u660e\uff1a<\/p>\n<ol>\n<li>\u5bc6\u94a5\u6269\u5c55\uff1aSM4\u4f7f\u7528128\u4f4d\u7684\u5bc6\u94a5\uff0c\u9996\u5148\u5bf9\u5bc6\u94a5\u8fdb\u884c\u6269\u5c55\uff0c\u751f\u621032\u4e2a\u5b50\u5bc6\u94a5\uff0c\u7528\u4e8e\u540e\u7eed\u7684\u52a0\u5bc6\u8f6e\u64cd\u4f5c\u3002<\/li>\n<li>\u521d\u59cb\u8f6e\uff1a\u5c06\u660e\u6587\u5206\u4e3a4\u4e2a\u5b57\u8282\u7684\u5206\u7ec4\uff0c\u4e0e\u7b2c\u4e00\u4e2a\u5b50\u5bc6\u94a5\u8fdb\u884c\u5f02\u6216\u64cd\u4f5c\u3002<\/li>\n<li>\n<p>\u52a0\u5bc6\u8f6e\uff1aSM4\u52a0\u5bc6\u7b97\u6cd5\u5171\u8fdb\u884c32\u8f6e\u52a0\u5bc6\u64cd\u4f5c\u3002\u6bcf\u8f6e\u64cd\u4f5c\u5305\u62ec\u4ee5\u4e0b\u6b65\u9aa4\uff1a<\/p>\n<ul>\n<li>\u5b57\u8282\u66ff\u6362\uff1a\u4f7f\u7528S\u76d2\u8fdb\u884c\u5b57\u8282\u66ff\u6362\u3002<\/li>\n<li>\u884c\u79fb\u4f4d\uff1a\u5bf9\u6bcf\u4e2a\u5206\u7ec4\u8fdb\u884c\u884c\u79fb\u4f4d\u64cd\u4f5c\u3002<\/li>\n<li>\u5217\u6df7\u6dc6\uff1a\u5bf9\u6bcf\u4e2a\u5206\u7ec4\u8fdb\u884c\u5217\u6df7\u6dc6\u64cd\u4f5c\u3002<\/li>\n<li>\u8f6e\u5bc6\u94a5\u52a0\uff1a\u5c06\u5f53\u524d\u8f6e\u7684\u5b50\u5bc6\u94a5\u4e0e\u5206\u7ec4\u8fdb\u884c\u5f02\u6216\u64cd\u4f5c\u3002<\/li>\n<\/ul>\n<\/li>\n<li>\u6700\u7ec8\u8f6e\uff1a\u5728\u6700\u540e\u4e00\u8f6e\u52a0\u5bc6\u64cd\u4f5c\u4e2d\uff0c\u4e0d\u8fdb\u884c\u5217\u6df7\u6dc6\u64cd\u4f5c\uff0c\u53ea\u8fdb\u884c\u5b57\u8282\u66ff\u6362\u3001\u884c\u79fb\u4f4d\u548c\u8f6e\u5bc6\u94a5\u52a0\u64cd\u4f5c\u3002<\/li>\n<li>\u8f93\u51fa\uff1a\u7ecf\u8fc732\u8f6e\u52a0\u5bc6\u64cd\u4f5c\u540e\uff0c\u5f97\u5230\u52a0\u5bc6\u540e\u7684\u5bc6\u6587\u3002<\/li>\n<\/ol>\n<p><strong>SM4\u52a0\u5bc6\u7b97\u6cd5\u7684\u5b89\u5168\u6027\u548c\u5f3a\u5ea6\u4e3b\u8981\u6765\u81ea\u4e8e\u5176\u590d\u6742\u7684\u8f6e\u51fd\u6570\u548c\u5bc6\u94a5\u6269\u5c55\u8fc7\u7a0b\u3002\u5b83\u5177\u6709\u8f83\u9ad8\u7684\u5b89\u5168\u6027\u548c\u6297\u653b\u51fb\u6027\uff0c\u5e76\u4e14\u5728\u5b9e\u9645\u5e94\u7528\u4e2d\u5f97\u5230\u4e86\u5e7f\u6cdb\u7684\u5e94\u7528\u548c\u8ba4\u53ef\u3002<\/strong><\/p>\n<p><strong>\u9700\u8981\u6ce8\u610f\u7684\u662f\uff1aSM4\u52a0\u5bc6\u7b97\u6cd5\u7684\u5b89\u5168\u6027\u8fd8\u4f9d\u8d56\u4e8e\u5bc6\u94a5\u7684\u4fdd\u5bc6\u6027\u548c\u968f\u673a\u6027\u3002\u5728\u4f7f\u7528SM4\u8fdb\u884c\u52a0\u5bc6\u65f6\uff0c\u5e94\u786e\u4fdd\u4f7f\u7528\u8db3\u591f\u5f3a\u5ea6\u7684\u5bc6\u94a5\uff0c\u5e76\u91c7\u53d6\u9002\u5f53\u7684\u5bc6\u94a5\u7ba1\u7406\u548c\u4fdd\u62a4\u63aa\u65bd\u3002<\/strong><\/p>\n<h2>4.SM4\u7684\u5404\u79cd\u5de5\u4f5c\u6a21\u5f0f\u5bf9\u6bd4<\/h2>\n<p>SM4\u52a0\u5bc6\u7b97\u6cd5\u53ef\u4ee5\u4f7f\u7528\u4e0d\u540c\u7684\u5de5\u4f5c\u6a21\u5f0f\uff0c\u5176\u4e2d\u5305\u62ecCBC\uff08Cipher Block Chaining\uff09\u6a21\u5f0f\u3002<\/p>\n<p>\u6211\u4f7f\u7528\u7684\u662fCBC\u6a21\u5f0f\uff0c\u4e0b\u9762\u548c\u5927\u5bb6\u5206\u4eab\u4e00\u4e0bCBC\u6a21\u5f0f\u4e0e\u5176\u4ed6\u6a21\u5f0f\u7684\u5bf9\u6bd4\uff1a<\/p>\n<ol>\n<li>\n<p>CBC\u6a21\u5f0f\uff08Cipher Block Chaining\uff09\uff1a<\/p>\n<ul>\n<li>\u7279\u70b9\uff1a\u6bcf\u4e2a\u660e\u6587\u5757\u4e0e\u524d\u4e00\u4e2a\u5bc6\u6587\u5757\u8fdb\u884c\u5f02\u6216\u64cd\u4f5c\uff0c\u7136\u540e\u518d\u8fdb\u884c\u52a0\u5bc6\u3002\u521d\u59cb\u5757\u4f7f\u7528\u521d\u59cb\u5316\u5411\u91cf\uff08IV\uff09\u3002<\/li>\n<li>\u4f18\u70b9\uff1a\u5177\u6709\u8f83\u597d\u7684\u5b89\u5168\u6027\uff0c\u80fd\u591f\u9690\u85cf\u660e\u6587\u7684\u6a21\u5f0f\u548c\u91cd\u590d\u6027\u3002<\/li>\n<li>\u7f3a\u70b9\uff1a\u52a0\u5bc6\u8fc7\u7a0b\u662f\u4e32\u884c\u7684\uff0c\u4e0d\u9002\u5408\u5e76\u884c\u5904\u7406\u3002<\/li>\n<\/ul>\n<\/li>\n<li>\n<p>ECB\u6a21\u5f0f\uff08Electronic Codebook\uff09\uff1a<\/p>\n<ul>\n<li>\u7279\u70b9\uff1a\u5c06\u6bcf\u4e2a\u660e\u6587\u5757\u72ec\u7acb\u52a0\u5bc6\uff0c\u76f8\u540c\u7684\u660e\u6587\u5757\u4f1a\u5f97\u5230\u76f8\u540c\u7684\u5bc6\u6587\u5757\u3002<\/li>\n<li>\u4f18\u70b9\uff1a\u7b80\u5355\u3001\u5e76\u884c\u5904\u7406\u6548\u7387\u9ad8\u3002<\/li>\n<li>\u7f3a\u70b9\uff1a\u4e0d\u80fd\u9690\u85cf\u660e\u6587\u7684\u6a21\u5f0f\u548c\u91cd\u590d\u6027\uff0c\u4e0d\u9002\u5408\u52a0\u5bc6\u5927\u91cf\u91cd\u590d\u7684\u6570\u636e\u3002<\/li>\n<\/ul>\n<\/li>\n<li>\n<p>CFB\u6a21\u5f0f\uff08Cipher Feedback\uff09\uff1a<\/p>\n<ul>\n<li>\u7279\u70b9\uff1a\u5c06\u524d\u4e00\u4e2a\u5bc6\u6587\u5757\u4f5c\u4e3a\u8f93\u5165\u6765\u52a0\u5bc6\u5f53\u524d\u7684\u660e\u6587\u5757\uff0c\u53ef\u4ee5\u5b9e\u73b0\u6d41\u5bc6\u7801\u7684\u529f\u80fd\u3002<\/li>\n<li>\u4f18\u70b9\uff1a\u80fd\u591f\u5904\u7406\u4e0d\u5b9a\u957f\u7684\u6570\u636e\u6d41\uff0c\u9002\u7528\u4e8e\u5b9e\u65f6\u52a0\u5bc6\u548c\u6d41\u5f0f\u4f20\u8f93\u3002<\/li>\n<li>\u7f3a\u70b9\uff1a\u52a0\u5bc6\u8fc7\u7a0b\u662f\u4e32\u884c\u7684\uff0c\u4e0d\u9002\u5408\u5e76\u884c\u5904\u7406\u3002<\/li>\n<\/ul>\n<\/li>\n<li>\n<p>OFB\u6a21\u5f0f\uff08Output Feedback\uff09\uff1a<\/p>\n<ul>\n<li>\u7279\u70b9\uff1a\u5c06\u524d\u4e00\u4e2a\u5bc6\u6587\u5757\u4f5c\u4e3a\u8f93\u5165\u6765\u751f\u6210\u5bc6\u94a5\u6d41\uff0c\u7136\u540e\u4e0e\u660e\u6587\u5757\u8fdb\u884c\u5f02\u6216\u64cd\u4f5c\uff0c\u53ef\u4ee5\u5b9e\u73b0\u6d41\u5bc6\u7801\u7684\u529f\u80fd\u3002<\/li>\n<li>\u4f18\u70b9\uff1a\u80fd\u591f\u5904\u7406\u4e0d\u5b9a\u957f\u7684\u6570\u636e\u6d41\uff0c\u9002\u7528\u4e8e\u5b9e\u65f6\u52a0\u5bc6\u548c\u6d41\u5f0f\u4f20\u8f93\u3002<\/li>\n<li>\u7f3a\u70b9\uff1a\u52a0\u5bc6\u8fc7\u7a0b\u662f\u4e32\u884c\u7684\uff0c\u4e0d\u9002\u5408\u5e76\u884c\u5904\u7406\u3002<\/li>\n<\/ul>\n<\/li>\n<li>\n<p>CTR\u6a21\u5f0f\uff08Counter\uff09\uff1a<\/p>\n<ul>\n<li>\u7279\u70b9\uff1a\u4f7f\u7528\u4e00\u4e2a\u8ba1\u6570\u5668\u6765\u751f\u6210\u5bc6\u94a5\u6d41\uff0c\u7136\u540e\u4e0e\u660e\u6587\u5757\u8fdb\u884c\u5f02\u6216\u64cd\u4f5c\uff0c\u53ef\u4ee5\u5b9e\u73b0\u6d41\u5bc6\u7801\u7684\u529f\u80fd\u3002<\/li>\n<li>\u4f18\u70b9\uff1a\u80fd\u591f\u5904\u7406\u4e0d\u5b9a\u957f\u7684\u6570\u636e\u6d41\uff0c\u9002\u7528\u4e8e\u5b9e\u65f6\u52a0\u5bc6\u548c\u6d41\u5f0f\u4f20\u8f93\u3002\u5e76\u884c\u5904\u7406\u6548\u7387\u9ad8\uff0c\u9002\u5408\u786c\u4ef6\u5b9e\u73b0\u3002<\/li>\n<li>\u7f3a\u70b9\uff1a\u9700\u8981\u4fdd\u8bc1\u8ba1\u6570\u5668\u7684\u552f\u4e00\u6027\uff0c\u5426\u5219\u4f1a\u5bfc\u81f4\u5bc6\u94a5\u6d41\u7684\u91cd\u590d\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n<h3>\u5bf9\u6bd4\u603b\u7ed3\uff1a<\/h3>\n<ul>\n<li>CBC\u6a21\u5f0f\u548cECB\u6a21\u5f0f\u76f8\u6bd4\uff0cCBC\u6a21\u5f0f\u5177\u6709\u66f4\u597d\u7684\u5b89\u5168\u6027\uff0c\u80fd\u591f\u9690\u85cf\u660e\u6587\u7684\u6a21\u5f0f\u548c\u91cd\u590d\u6027\uff0c\u800cECB\u6a21\u5f0f\u65e0\u6cd5\u9690\u85cf\u8fd9\u4e9b\u4fe1\u606f\u3002<\/li>\n<li>CFB\u6a21\u5f0f\u3001OFB\u6a21\u5f0f\u548cCTR\u6a21\u5f0f\u90fd\u662f\u6d41\u5bc6\u7801\u6a21\u5f0f\uff0c\u9002\u7528\u4e8e\u4e0d\u5b9a\u957f\u7684\u6570\u636e\u6d41\u52a0\u5bc6\uff0c\u80fd\u591f\u5b9e\u73b0\u5b9e\u65f6\u52a0\u5bc6\u548c\u6d41\u5f0f\u4f20\u8f93\u3002\u5b83\u4eec\u7684\u4e3b\u8981\u533a\u522b\u5728\u4e8e\u5bc6\u94a5\u6d41\u7684\u751f\u6210\u65b9\u5f0f\u548c\u52a0\u5bc6\u8fc7\u7a0b\u7684\u5e76\u884c\u6027\u3002<\/li>\n<li>CFB\u6a21\u5f0f\u548cOFB\u6a21\u5f0f\u7684\u52a0\u5bc6\u8fc7\u7a0b\u662f\u4e32\u884c\u7684\uff0c\u4e0d\u9002\u5408\u5e76\u884c\u5904\u7406\uff0c\u800cCTR\u6a21\u5f0f\u7684\u52a0\u5bc6\u8fc7\u7a0b\u53ef\u4ee5\u5e76\u884c\u5904\u7406\uff0c\u9002\u5408\u786c\u4ef6\u5b9e\u73b0\u3002<\/li>\n<\/ul>\n<p>\u603b\u7684\u6765\u8bf4\uff1aCBC\u6a21\u5f0f\u5728\u5b89\u5168\u6027\u65b9\u9762\u8f83\u597d\uff0c\u80fd\u591f\u9690\u85cf\u660e\u6587\u7684\u6a21\u5f0f\u548c\u91cd\u590d\u6027\u3002\u800c\u6d41\u5bc6\u7801\u6a21\u5f0f\uff08CFB\u3001OFB\u548cCTR\uff09\u9002\u7528\u4e8e\u4e0d\u5b9a\u957f\u6570\u636e\u6d41\u7684\u52a0\u5bc6\uff0c\u80fd\u591f\u5b9e\u73b0\u5b9e\u65f6\u52a0\u5bc6\u548c\u6d41\u5f0f\u4f20\u8f93\uff0c\u5176\u4e2dCTR\u6a21\u5f0f\u5177\u6709\u8f83\u597d\u7684\u5e76\u884c\u5904\u7406\u6027\u80fd\u3002\u9009\u62e9\u5408\u9002\u7684\u52a0\u5bc6\u6a21\u5f0f\u53d6\u51b3\u4e8e\u5177\u4f53\u7684\u5e94\u7528\u9700\u6c42\u548c\u5b89\u5168\u6027\u8981\u6c42\u3002<\/p>\n<p><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000043931638\" alt=\"\" title=\"\" loading=\"lazy\"><\/p>\n<h2>5. \u76f4\u63a5\u53ef\u7528\u7684\u300c\u4ee3\u7801\u793a\u4f8b\u300d<\/h2>\n<p><strong>\u6211\u4e00\u76f4\u8ba4\u4e3a\u53ef\u4ee5\u901a\u8fc7\u590d\u5236\u7c98\u8d34\uff0c\u76f4\u63a5\u8dd1\u901a\u7684\u793a\u4f8b\u4ee3\u7801\u624d\u662f\u597d\u4ee3\u7801\u3002<\/strong><\/p>\n<p>\u6ca1\u9519\uff0c\u6211\u7684\u4ee3\u7801\u793a\u4f8b\u5c31\u662f\u8fd9\u6837\uff0c\u5e76\u4e14\u5173\u952e\u4ee3\u7801\u90fd\u5199\u597d\u4e86\u6ce8\u91ca\uff1a<\/p>\n<pre><code class=\"go\">package main\n\nimport (\n    &quot;bytes&quot;\n    &quot;crypto\/cipher&quot;\n    &quot;encoding\/hex&quot;\n    &quot;fmt&quot;\n    &quot;github.com\/tjfoc\/gmsm\/sm4&quot;\n)\n\n\/\/ SM4\u52a0\u5bc6\nfunc SM4Encrypt(data string) (result string, err error) {\n    \/\/\u5b57\u7b26\u4e32\u8f6cbyte\u5207\u7247\n    plainText := []byte(data)\n    \/\/\u5efa\u8bae\u4ece\u914d\u7f6e\u6587\u4ef6\u4e2d\u8bfb\u53d6\u79d8\u94a5\uff0c\u8fdb\u884c\u7edf\u4e00\u7ba1\u7406\n    SM4Key := &quot;Uv6tkf2M3xYSRuFv&quot;\n    \/\/todo \u6ce8\u610f\uff1aiv\u9700\u8981\u662f\u968f\u673a\u7684\uff0c\u8fdb\u4e00\u6b65\u4fdd\u8bc1\u52a0\u5bc6\u7684\u5b89\u5168\u6027\uff0c\u5c06iv\u7684\u503c\u548c\u52a0\u5bc6\u540e\u7684\u6570\u636e\u4e00\u8d77\u8fd4\u56de\u7ed9\u5916\u90e8\n    SM4Iv := &quot;04TzMuvkHm_EZnHm&quot;\n    iv := []byte(SM4Iv)\n    key := []byte(SM4Key)\n    \/\/\u5b9e\u4f8b\u5316sm4\u52a0\u5bc6\u5bf9\u8c61\n    block, err := sm4.NewCipher(key)\n    if err != nil {\n        panic(err)\n    }\n    \/\/\u660e\u6587\u6570\u636e\u586b\u5145\n    paddingData := paddingLastGroup(plainText, block.BlockSize())\n    \/\/\u58f0\u660eSM4\u7684\u52a0\u5bc6\u5de5\u4f5c\u6a21\u5f0f\n    blockMode := cipher.NewCBCEncrypter(block, iv)\n    \/\/\u4e3a\u586b\u5145\u540e\u7684\u6570\u636e\u8fdb\u884c\u52a0\u5bc6\u5904\u7406\n    cipherText := make([]byte, len(paddingData))\n    \/\/\u4f7f\u7528CryptBlocks\u8fd9\u4e2a\u6838\u5fc3\u65b9\u6cd5\uff0c\u5c06paddingData\u8fdb\u884c\u52a0\u5bc6\u5904\u7406\uff0c\u5c06\u52a0\u5bc6\u5904\u7406\u540e\u7684\u503c\u8d4b\u503c\u5230cipherText\u4e2d\n    blockMode.CryptBlocks(cipherText, paddingData)\n    \/\/\u52a0\u5bc6\u7ed3\u679c\u4f7f\u7528hex\u8f6c\u6210\u5b57\u7b26\u4e32\uff0c\u65b9\u4fbf\u5916\u90e8\u8c03\u7528\n    cipherString := hex.EncodeToString(cipherText)\n    return cipherString, nil\n}\n\n\/\/ SM4\u89e3\u5bc6 \u4f20\u5165string \u8f93\u51fastring\nfunc SM4Decrypt(data string) (res string, err error) {\n    \/\/\u79d8\u94a5\n    SM4Key := &quot;Uv6tkf2M3xYSRuFv&quot;\n    \/\/iv\u662fInitialization Vector\uff0c\u521d\u59cb\u5411\u91cf\uff0c\n    SM4Iv := &quot;04TzMuvkHm_EZnHm&quot;\n    iv := []byte(SM4Iv)\n    key := []byte(SM4Key)\n    block, err := sm4.NewCipher(key)\n    if err != nil {\n        panic(err)\n    }\n    \/\/\u4f7f\u7528hex\u89e3\u7801\n    decodeString, err := hex.DecodeString(data)\n    if err != nil {\n        return &quot;&quot;, err\n    }\n    \/\/CBC\u6a21\u5f0f \u4f18\u70b9\uff1a\u5177\u6709\u8f83\u597d\u7684\u5b89\u5168\u6027\uff0c\u80fd\u591f\u9690\u85cf\u660e\u6587\u7684\u6a21\u5f0f\u548c\u91cd\u590d\u6027\u3002 \u7f3a\u70b9\uff1a\u52a0\u5bc6\u8fc7\u7a0b\u662f\u4e32\u884c\u7684\uff0c\u4e0d\u9002\u5408\u5e76\u884c\u5904\u7406\u3002\n    blockMode := cipher.NewCBCDecrypter(block, iv)\n    \/\/\u4e0b\u6587\u6709\u8be6\u89e3\u8fd9\u6bb5\u4ee3\u7801\u7684\u542b\u4e49\n    blockMode.CryptBlocks(decodeString, decodeString)\n    \/\/\u53bb\u6389\u660e\u6587\u540e\u9762\u7684\u586b\u5145\u6570\u636e\n    plainText := unPaddingLastGroup(decodeString)\n    \/\/\u76f4\u63a5\u8fd4\u56de\u5b57\u7b26\u4e32\u7c7b\u578b\uff0c\u65b9\u4fbf\u5916\u90e8\u8c03\u7528\n    return string(plainText), nil\n}\n\n\/\/ \u660e\u6587\u6570\u636e\u586b\u5145\nfunc paddingLastGroup(plainText []byte, blockSize int) []byte {\n    \/\/1.\u8ba1\u7b97\u6700\u540e\u4e00\u4e2a\u5206\u7ec4\u4e2d\u660e\u6587\u540e\u9700\u8981\u586b\u5145\u7684\u5b57\u8282\u6570\n    padNum := blockSize - len(plainText)%blockSize\n    \/\/2.\u5c06\u5b57\u8282\u6570\u8f6c\u6362\u4e3abyte\u7c7b\u578b\n    char := []byte{byte(padNum)}\n    \/\/3.\u521b\u5efa\u5207\u7247\u5e76\u521d\u59cb\u5316\n    newPlain := bytes.Repeat(char, padNum)\n    \/\/4.\u5c06\u586b\u5145\u6570\u636e\u8ffd\u52a0\u5230\u539f\u59cb\u6570\u636e\u540e\n    newText := append(plainText, newPlain...)\n    return newText\n}\n\n\/\/ \u53bb\u6389\u660e\u6587\u540e\u9762\u7684\u586b\u5145\u6570\u636e\nfunc unPaddingLastGroup(plainText []byte) []byte {\n    \/\/1.\u62ff\u5230\u5207\u7247\u4e2d\u7684\u6700\u540e\u4e00\u4e2a\u5b57\u8282\n    length := len(plainText)\n    lastChar := plainText[length-1]\n    \/\/2.\u5c06\u6700\u540e\u4e00\u4e2a\u6570\u636e\u8f6c\u6362\u4e3a\u6574\u6570\n    number := int(lastChar)\n    return plainText[:length-number]\n}\n\nfunc main() {\n    \/\/\u5f85\u52a0\u5bc6\u7684\u6570\u636e \u6a21\u62df18\u4f4d\u7684\u8eab\u4efd\u8bc1\u53f7\n    plainText := &quot;131229199907097219&quot;\n    \/\/SM4\u52a0\u5bc6\n    decrypt, err := SM4Encrypt(plainText)\n    if err != nil {\n        return\n    }\n    fmt.Printf(&quot;sm4\u52a0\u5bc6\u7ed3\u679c:%s\/n&quot;, decrypt)\n    \/\/cipherString := hex.EncodeToString(cipherText)\n    \/\/fmt.Printf(&quot;sm4\u52a0\u5bc6\u7ed3\u679c\u8f6c\u6210\u5b57\u7b26\u4e32:%s\/n&quot;, cipherString)\n\n    \/\/SM4\u89e3\u5bc6\n    sm4Decrypt, err := SM4Decrypt(decrypt)\n    if err != nil {\n        return\n    }\n    fmt.Printf(&quot;plainText:%s\/n&quot;, sm4Decrypt)\n    flag := plainText == sm4Decrypt\n    fmt.Println(&quot;\u89e3\u5bc6\u662f\u5426\u6210\u529f\uff1a&quot;, flag)\n}<\/code><\/pre>\n<p>\u8fd0\u884c\u7ed3\u679c\u5982\u4e0b\uff1a<\/p>\n<p><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000043931639\" alt=\"\" title=\"\" loading=\"lazy\"><\/p>\n<p><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000043931640\" alt=\"\" title=\"\" loading=\"lazy\"><\/p>\n<h2>6. \u6838\u5fc3\u65b9\u6cd5\u7684\u6e90\u7801\u89e3\u6790<\/h2>\n<p>\u7ec6\u5fc3\u7684\u5c0f\u4f19\u4f34\u5e94\u8be5\u53c8\u53d1\u73b0\uff0c\uff08\u6216\u8005\u901a\u8fc7\u4f60\u771f\u5b9e\u7684\u6572\u4ee3\u7801\u4e00\u5b9a\u80fd\u53d1\u73b0\u3002<\/p>\n<p>\u5728\u52a0\u5bc6\u548c\u89e3\u5bc6\u90e8\u5206\u6709\u4e00\u4e2aCryptBlocks()\u65b9\u6cd5\uff0c\u6211\u4eec\u6765\u89e3\u6790\u4e00\u4e0b\u8fd9\u6bb5\u6e90\u7801\uff1a<\/p>\n<pre><code>    \/\/ CryptBlocks encrypts or decrypts a number of blocks. The length of\n    \/\/ src must be a multiple of the block size. Dst and src must overlap\n    \/\/ entirely or not at all.\n    \/\/\n    \/\/ If len(dst) &lt; len(src), CryptBlocks should panic. It is acceptable\n    \/\/ to pass a dst bigger than src, and in that case, CryptBlocks will\n    \/\/ only update dst[:len(src)] and will not touch the rest of dst.\n    \/\/\n    \/\/ Multiple calls to CryptBlocks behave as if the concatenation of\n    \/\/ the src buffers was passed in a single run. That is, BlockMode\n    \/\/ maintains state and does not reset at each CryptBlocks call.\n    CryptBlocks(dst, src []byte)<\/code><\/pre>\n<h3>\u7ffb\u8bd1\u7ffb\u8bd1<\/h3>\n<p>CryptBlocks\u65b9\u6cd5\u7528\u4e8e\u52a0\u5bc6\u6216\u89e3\u5bc6\u591a\u4e2a\u6570\u636e\u5757\u3002src\u7684\u957f\u5ea6\u5fc5\u987b\u662f\u5757\u5927\u5c0f\u7684\u500d\u6570\u3002<strong>dst\u548csrc\u5fc5\u987b\u5b8c\u5168\u91cd\u53e0\u6216\u5b8c\u5168\u4e0d\u91cd\u53e0\u3002<\/strong><\/p>\n<p>\u5982\u679clen(dst) &lt; len(src)\uff0cCryptBlocks\u65b9\u6cd5\u5e94\u8be5\u5f15\u53d1panic\u3002\u5141\u8bb8\u4f20\u9012\u6bd4src\u66f4\u5927\u7684dst\uff0c\u6b64\u65f6CryptBlocks\u53ea\u4f1a\u66f4\u65b0dst[:len(src)]\uff0c\u4e0d\u4f1a\u89e6\u53cadst\u7684\u5176\u4f59\u90e8\u5206\u3002<\/p>\n<p>\u5728\u8fd9\u6bb5\u4ee3\u7801\u6ce8\u91ca\u4e2d\uff0cdst\u8868\u793a\u76ee\u6807\u7f13\u51b2\u533a\uff0c\u7528\u4e8e\u5b58\u50a8\u52a0\u5bc6\u6216\u89e3\u5bc6\u540e\u7684\u7ed3\u679c\u3002src\u8868\u793a\u6e90\u7f13\u51b2\u533a\uff0c\u5305\u542b\u8981\u52a0\u5bc6\u6216\u89e3\u5bc6\u7684\u6570\u636e\u3002\u8fd9\u4e24\u4e2a\u7f13\u51b2\u533a\u53ef\u4ee5\u662f\u76f8\u540c\u7684\u5185\u5b58\u533a\u57df\uff0c\u4e5f\u53ef\u4ee5\u662f\u4e0d\u540c\u7684\u5185\u5b58\u533a\u57df\u3002CryptBlocks\u65b9\u6cd5\u4f1a\u5c06src\u4e2d\u7684\u6570\u636e\u8fdb\u884c\u52a0\u5bc6\u6216\u89e3\u5bc6\uff0c\u5e76\u5c06\u7ed3\u679c\u5b58\u50a8\u5728dst\u4e2d\u3002<\/p>\n<p>\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c<strong>dst\u548csrc\u7684\u957f\u5ea6\u5fc5\u987b\u662f\u5757\u5927\u5c0f\u7684\u500d\u6570\uff0c\u5426\u5219CryptBlocks\u65b9\u6cd5\u53ef\u80fd\u4f1a\u5f15\u53d1panic\u3002\u5982\u679cdst\u7684\u957f\u5ea6\u5c0f\u4e8esrc\u7684\u957f\u5ea6\uff0cCryptBlocks\u65b9\u6cd5\u53ea\u4f1a\u66f4\u65b0dst\u7684\u524dlen(src)\u4e2a\u5b57\u8282\uff0c\u5e76\u4e0d\u4f1a\u4fee\u6539dst\u7684\u5176\u4f59\u90e8\u5206\u3002<\/strong><\/p>\n<p>\u6b64\u5916\uff0c<em>CryptBlocks\u65b9\u6cd5\u53ef\u4ee5\u591a\u6b21\u8c03\u7528\uff0c\u591a\u6b21\u8c03\u7528\u7684\u6548\u679c\u76f8\u5f53\u4e8e\u5c06\u6240\u6709src\u7f13\u51b2\u533a\u7684\u6570\u636e\u8fde\u63a5\u5728\u4e00\u8d77\uff0c\u7136\u540e\u8fdb\u884c\u52a0\u5bc6\u6216\u89e3\u5bc6\u3002\u8fd9\u610f\u5473\u7740BlockMode\u4f1a\u4fdd\u6301\u72b6\u6001\uff0c\u5e76\u4e14\u4e0d\u4f1a\u5728\u6bcf\u6b21CryptBlocks\u8c03\u7528\u65f6\u91cd\u7f6e\u3002<\/em><\/p>\n<p>\u5982\u679c\u4f60\u770b\u6ce8\u91ca\u7ffb\u8bd1\u7406\u89e3\u8d77\u6765\u8fd8\u662f\u6bd4\u8f83\u62bd\u8c61\u7684\u8bdd\uff0c\u6211\u6362\u4e2a\u65b9\u5f0f\u4ecb\u7ecd\u4e00\u4e0b\uff1a<\/p>\n<h3>\u7528\u6211\u7684\u8bdd\u6765\u8bf4<\/h3>\n<p>\u5728SM4\u52a0\u5bc6\u4e2d\uff0cCryptBlocks()\u65b9\u6cd5\u662f\u7528\u4e8e\u52a0\u5bc6\u6216\u89e3\u5bc6\u591a\u4e2a\u6570\u636e\u5757\u7684\u65b9\u6cd5\u3002\u5b83\u662fSM4\u7b97\u6cd5\u4e2d\u7684\u4e00\u4e2a\u6838\u5fc3\u51fd\u6570\u3002<\/p>\n<p>\u5177\u4f53\u6765\u8bf4\uff0cCryptBlocks()\u65b9\u6cd5\u63a5\u53d7\u4e00\u4e2a\u6e90\u6570\u636e\u7f13\u51b2\u533a\uff08src\uff09\u548c\u4e00\u4e2a\u76ee\u6807\u6570\u636e\u7f13\u51b2\u533a\uff08dst\uff09\uff0c\u5e76\u5bf9\u6e90\u6570\u636e\u8fdb\u884c\u52a0\u5bc6\u6216\u89e3\u5bc6\u64cd\u4f5c\uff0c\u5c06\u7ed3\u679c\u5b58\u50a8\u5728\u76ee\u6807\u6570\u636e\u7f13\u51b2\u533a\u4e2d\u3002<\/p>\n<p>\u5728\u52a0\u5bc6\u8fc7\u7a0b\u4e2d\uff0cCryptBlocks()\u65b9\u6cd5\u4f1a\u5c06\u6e90\u6570\u636e\u5206\u6210\u591a\u4e2a\u6570\u636e\u5757\uff0c\u7136\u540e\u5bf9\u6bcf\u4e2a\u6570\u636e\u5757\u8fdb\u884c\u52a0\u5bc6\u64cd\u4f5c\uff0c\u5e76\u5c06\u7ed3\u679c\u5b58\u50a8\u5728\u76ee\u6807\u6570\u636e\u7f13\u51b2\u533a\u4e2d\u3002\u52a0\u5bc6\u8fc7\u7a0b\u4e2d\u4f7f\u7528\u7684\u5bc6\u94a5\u548c\u5176\u4ed6\u53c2\u6570\u7531SM4\u7b97\u6cd5\u7684\u5b9e\u73b0\u786e\u5b9a\u3002<\/p>\n<p>\u5728\u89e3\u5bc6\u8fc7\u7a0b\u4e2d\uff0cCryptBlocks()\u65b9\u6cd5\u4f1a\u5bf9\u6e90\u6570\u636e\u7f13\u51b2\u533a\u4e2d\u7684\u6570\u636e\u5757\u8fdb\u884c\u89e3\u5bc6\u64cd\u4f5c\uff0c\u5e76\u5c06\u89e3\u5bc6\u540e\u7684\u7ed3\u679c\u5b58\u50a8\u5728\u76ee\u6807\u6570\u636e\u7f13\u51b2\u533a\u4e2d\u3002<\/p>\n<p>\u9700\u8981\u6ce8\u610f\u7684\u662f\uff1a<strong>CryptBlocks()\u65b9\u6cd5\u8981\u6c42\u6e90\u6570\u636e\u7f13\u51b2\u533a\u548c\u76ee\u6807\u6570\u636e\u7f13\u51b2\u533a\u7684\u957f\u5ea6\u5fc5\u987b\u662fSM4\u7b97\u6cd5\u7684\u5757\u5927\u5c0f\u7684\u500d\u6570\u3002\u5426\u5219\uff0c\u53ef\u80fd\u4f1a\u5f15\u53d1\u9519\u8bef\u6216\u4ea7\u751f\u4e0d\u53ef\u9884\u6d4b\u7684\u7ed3\u679c\u3002<\/strong><\/p>\n<p>CryptBlocks()\u65b9\u6cd5\u662fSM4\u52a0\u5bc6\u7b97\u6cd5\u4e2d\u7528\u4e8e\u52a0\u5bc6\u6216\u89e3\u5bc6\u591a\u4e2a\u6570\u636e\u5757\u7684\u5173\u952e\u65b9\u6cd5\uff0c\u5b83\u5b9e\u73b0\u4e86SM4\u7b97\u6cd5\u7684\u6838\u5fc3\u529f\u80fd\u3002<\/p>\n<p><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000043931641\" alt=\"\" title=\"\" loading=\"lazy\"><\/p>\n<h2>7. \u603b\u7ed3\u56de\u987e<\/h2>\n<p>\u6211\u4e4b\u524d\u4e5f\u5199\u8fc7\u4e00\u7bc7\u89e3\u5bc6\u89e3\u5bc6\u7684\u6587\u7ae0\uff0c\u6b22\u8fce\u5927\u5bb6\u9605\u8bfb\u6307\u6559\uff1a<a href=\"https:\/\/link.segmentfault.com\/?enc=rWt14dFtx3Kb6HvmCz8YIQ%3D%3D.fAyNl1PpCf%2BObLoWu%2BiBmQ660ydKalUbD0yUwvnG2Myg1maF08D8RmYuzGh8bEZDaAU%2FGInS0mLOqmGfplzcB%2BgFRf8PLPGi%2BQzXVdO32YpgqWPEPpHAM1wzUTA0jyeyZlYvxmNyQlbRuD4rsntHml9UQzCrDuGeITJAIfd%2BFNfEVHUjbf%2BsyYKV%2BmPWpn6AG9A7tPV1KYg4Nj2lKny73NBlYdpJWMMzo6aPxJe%2FVyLVergGXklhEu4%2BS8UOdgQGjcVWPHVC7Wh%2FpdZzKeCOOE9wu%2BeEhBfevSKA2ft1DGg%3D\" rel=\"nofollow\">\u4fdd\u969c\u7f51\u7edc\u8bf7\u6c42\u6570\u636e\u4f20\u8f93\u7684\u5b89\u5168\u6027\u3001\u4e00\u81f4\u6027\u548c\u9632\u7be1\u6539\uff1a\u5bf9\u79f0\u52a0\u5bc6\u4e0e\u975e\u5bf9\u79f0\u52a0\u5bc6\u7684\u7ed3\u5408<\/a><\/p>\n<p>\u76f8\u4fe1\u4f60\u8bfb\u4e86\u8fd9\u7bc7\u6587\u7ae0\u80fd\u5bf9SM4\u52a0\u5bc6\u6709\u4e2a\u6574\u4f53\u7406\u89e3\uff0c\u901a\u8fc7\u6211\u5728\u6587\u7ae0\u4e2d\u63d0\u4f9b\u7684\u793a\u4f8b\u4ee3\u7801\u53ef\u4ee5\u5feb\u901f\u8dd1\u901a\u52a0\u5bc6\u548c\u89e3\u5bc6\u6d41\u7a0b\u3002\u6211\u8fd8\u5e26\u7740\u4f60\u5206\u6790\u4e86CryptBlocks()\u6e90\u7801\u7684\u4f5c\u7528\u3002<\/p>\n<p>\u6b22\u8fce\u5927\u5bb6\u6536\u85cf\u3001\u70b9\u8d5e\u3001\u8f6c\u53d1\u3002\u4f60\u7684\u5173\u6ce8\uff0c\u662f\u6211\u66f4\u6587\u7684\u6700\u5927\u52a8\u529b\uff01<\/p>\n<p><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000043931642\" alt=\"\" title=\"\" loading=\"lazy\"><\/p>\n<h2>\u6b22\u8fce\u5173\u6ce8 \u2764<\/h2>\n<p>\u6211\u7684\u5fae\u4fe1\uff1awangzhongyang1993<\/p>\n<p>\u89c6\u9891\u53f7\uff1a<a href=\"https:\/\/link.segmentfault.com\/?enc=7Ly%2Bu%2FBc1kJbcd3s1F8vEg%3D%3D.GfehjETGML75PCLS69j3J4odYIPS%2BPeJCcLwy2tsyaAqF95rlXaMke3iZ87XHK9IDakGAmQSyKu7OAgLWCO0UQ%3D%3D\" rel=\"nofollow\">\u738b\u4e2d\u9633Go<\/a><\/p>\n<p>\u516c\u4f17\u53f7\uff1a<a href=\"https:\/\/link.segmentfault.com\/?enc=qqpoRjU40PVgYy5Ay3MrVg%3D%3D.I2p8n3A%2B6yUNAIFhRbr0YuY7f6%2FKlYrzxFb1%2BCDx%2FdOg4N3AHqsX3aakfLEXpDIfQF5PEW6g%2FjaTUT%2B0Nk6TPg%3D%3D\" rel=\"nofollow\">\u7a0b\u5e8f\u5458\u5347\u804c\u52a0\u85aa\u4e4b\u65c5<\/a><\/p>\n<p><a href=\"https:\/\/segmentfault.com\/a\/1190000043931632\">https:\/\/segmentfault.com\/a\/1190000043931632<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u524d\u8a00 \u6700\u8fd1\u505a\u7684\u9879\u76ee\u5bf9\u5b89\u5168\u6027\u8981\u6c42\u6bd4\u8f83\u9ad8\uff0c\u7279\u522b\u5f3a\u8c03\uff1a\u7cfb\u7edf\u4e0d\u80fd\u6d89\u53caMD5\u3001SHA1\u3001RSA1024\u3001DES\u9ad8\u98ce\u9669\u7b97\u6cd5 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[4],"tags":[],"class_list":["post-10007982","post","type-post","status-publish","format-standard","hentry","category-share"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/itmax.cn\/index.php?rest_route=\/wp\/v2\/posts\/10007982","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/itmax.cn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/itmax.cn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/itmax.cn\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/itmax.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=10007982"}],"version-history":[{"count":0,"href":"https:\/\/itmax.cn\/index.php?rest_route=\/wp\/v2\/posts\/10007982\/revisions"}],"wp:attachment":[{"href":"https:\/\/itmax.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=10007982"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/itmax.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=10007982"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/itmax.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=10007982"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}