{"id":5418,"date":"2023-03-31T08:06:00","date_gmt":"2023-03-31T00:06:00","guid":{"rendered":"https:\/\/ixyzero.com\/blog\/?p=5418"},"modified":"2023-03-22T20:09:34","modified_gmt":"2023-03-22T12:09:34","slug":"%e5%a6%82%e4%bd%95%e5%88%a4%e6%96%ad%e5%9b%be%e7%89%87%e5%b7%b2%e6%b7%bb%e5%8a%a0%e6%b0%b4%e5%8d%b0","status":"publish","type":"post","link":"https:\/\/ixyzero.com\/blog\/archives\/5418.html","title":{"rendered":"\u5982\u4f55\u5224\u65ad\u56fe\u7247\u5df2\u6dfb\u52a0\u6c34\u5370"},"content":{"rendered":"\n<p>=Start=<\/p>\n\n\n\n<h4 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class=\"wp-block-heading\">\u6b63\u6587\uff1a<\/h4>\n\n\n\n<h5 class=\"wp-block-heading\">\u53c2\u8003\u89e3\u7b54\uff1a<\/h5>\n\n\n\n<h4 class=\"wp-block-heading\">\u603b\u7ed3\u4e00\u4e0b<\/h4>\n\n\n\n<ol class=\"wp-block-list\" 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class=\"wp-block-list\">\n<li>\u6700\u597d\u7684\u505a\u6cd5\u662f\u2014\u2014<strong>\u6709\u4e8b\u6ca1\u4e8b\u90fd\u4e0d\u8981\u4e71\u622a\u56fe\uff0c\u5982\u679c\u662f\u654f\u611f\u5185\u5bb9\uff0c\u56de\u6eaf\u8ffd\u8e2a\u7684\u5b9e\u73b0\u65b9\u5f0f\uff08\u5305\u62ec\u4f46\u4e0d\u9650\u4e8e\u660e\u3001\u6697\u6c34\u5370\uff09\u5f88\u591a\uff0c\u603b\u6709\u4e00\u79cd\u4f60\u4e0d\u77e5\u9053\u6216\u8005\u6ca1\u6709\u89c4\u907f\u7684\uff0c\u4f1a\u636e\u6b64\u627e\u5230\u4f60\u3002<\/strong><\/li>\n<\/ul>\n\n\n\n<pre class=\"wp-block-code\"><code>\u6700\u8fd1\u53c8\u5237\u5230\u4e86\u8c46\u74e3\u4e00\u7c7b\u8f6f\u4ef6\u542b\u6709\u9690\u85cf\u6c34\u5370\u7684\u89c6\u9891\uff0c\u56e0\u4e3a\u67d0\u4eba\u7684\u622a\u56fe\u9501\u5b9a\u5230\u4e86\u4ed6\uff0c\u628a\u4ed6\u7684\u8d26\u53f7\u5c01\u505c\uff0c\u611f\u89c9\u633a\u6050\u6016\u7684\u3002\u60f3\u95ee\u4e00\u4e0b\u6709\u6ca1\u6709\u4ec0\u4e48\u65b9\u6cd5\u6216\u8005\u8f6f\u4ef6\u53ef\u4ee5\u9632\u6b62\u6216\u8005\u67e5\u770b\u8fd9\u7c7b\u6c34\u5370\u3002\n\n\u8d34\u4e2a\u4e4b\u524d\u770b\u5230\u7684\u3002**\u9996\u5148\uff0c\u4f60\u5728\u622a\u56fe\u64cd\u4f5c\u7684\u77ac\u95f4\uff0c\u5c24\u5176\u662f\u5404\u5bb6\u5f00\u53d1\u7684\u5185\u7f51\u7684\u529e\u516c\u8f6f\u4ef6\uff0c\u5ba2\u6237\u7aef\u9996\u5148\u5c31\u80fd\u611f\u77e5\u5230\u4f60\u6709\u6ca1\u6709\u622a\u56fe\uff0ciOS\u751a\u81f3\u6709\u8fd9\u4e2aAPI\uff0cAndroid\u4e5f\u80fd\u901a\u8fc7\u76d1\u542c\u622a\u56fe\u4fdd\u5b58\u8def\u5f84\u5b9e\u73b0\uff0c\u505a\u8fc7\u79fb\u52a8\u7aef\u5f00\u53d1\u7684\u4eba\u5e94\u8be5\u90fd\u6709\u6240\u4e86\u89e3\u3002\u6240\u4ee5\u4f60\u5728\u4ec0\u4e48\u65f6\u95f4\u3001\u4ec0\u4e48\u9875\u9762\u622a\u4e86\u56fe\uff0c\u5176\u5b9e\u90fd\u80fd\u8bb0\u5f55\u4e0b\u6765\u5e76\u4e0a\u4f20\u670d\u52a1\u5668\u7684\u3002**\n+\n**\u9664\u4e86\u622a\u56fe\u64cd\u4f5c\u4e4b\u5916\uff0c\u590d\u5236\u7b49\u53ef\u80fd\u4f1a\u5f15\u8d77\u6570\u636e\u6cc4\u9732\u7684\u64cd\u4f5c\u90fd\u6709\u7c7b\u4f3c\u7684API\u6216\u662f\u5176\u5b83\u65b9\u5f0f\u611f\u77e5\u64cd\u4f5c\u7684\u884c\u4e3a\u3002**\n==\n\u76ee\u524d\u6765\u770b\u53bb\u9664\u9690\u85cf\u6c34\u5370\u7684\u96be\u5ea6\u5f88\u5927. \u6548\u679c\u4e0d\u597d.\n=\n\u4e0a\u7f51\u8fd8\u662f\u9700\u8981\u591a\u591a\u7559\u610f\n=\n\u8fd9\u79cd\u6c34\u5370\u4e00\u822c\u90fd\u662f\u52a0\u5230\u9891\u57df\u91cc\u9762\u7684\uff0c\u5f88\u96be\u6e05\u9664<\/code><\/pre>\n\n\n\n<pre class=\"wp-block-code\"><code>\u56fe\u7247\u76f2\u6c34\u5370\u67e5\u770b\u5668\uff08\u56fe\u7247LSB\u67e5\u770b\u5668\uff09\u7c7b\u4f3c\u4e8eStegSolve\uff0c\u80fd\u591f\u67e5\u770b\u56fe\u7247\u5404\u901a\u9053\u7684\u6700\u4f4e\u4f4d\uff08LSB\uff09\u4fe1\u606f\uff0c\u652f\u6301 R\/G\/B\/A Plane 0\/1\/2 \u6a21\u5f0f\uff0c\u65b9\u4fbf\u67e5\u770b\u56fe\u7247\u662f\u5426\u6dfb\u52a0\u4e86\u76f2\u6c34\u5370\u4fe1\u606f\u3002\n\n# \u5173\u4e8e\u56fe\u7247LSB\u9690\u5199\n\nLSB\u7b97\u6cd5\uff1a\u6700\u4f4e\u6709\u6548\u4f4d\uff08\u82f1\u8bed\uff1aLeast Significant Bit\uff0cLSB\uff09\u662f\u6307\u4e00\u4e2a\u4e8c\u8fdb\u5236\u6570\u5b57\u4e2d\u7684\u7b2c0\u4f4d\uff08\u5373\u6700\u4f4e\u4f4d\uff09\uff0c\u6743\u503c\u4e3a2^0\uff0c\u53ef\u4ee5\u7528\u5b83\u6765\u68c0\u6d4b\u6570\u7684\u5947\u5076\u6027\u3002\u5176\u5e94\u7528\u573a\u666f\u4e00\u822c\u4e3a\u9690\u85cf\u660e\u6587\u6216\u52a0\u5bc6\u8fc7\u7684\u6570\u636e\u56fe\u7247\u4e2d\uff0c\u589e\u52a0\u7528\u6237\u5206\u6790\u6216\u7834\u89e3\u654f\u611f\u4fe1\u606f\u7684\u96be\u5ea6\u3002\n\nLSB\u9690\u5199\u539f\u7406\u5c31\u662f\u56fe\u7247\u4e2d\u7684\u50cf\u7d20\u4e00\u822c\u662f\u7531\u4e09\u79cd\u989c\u8272\u7ec4\u6210\uff0c\u5373\u4e09\u539f\u8272(\u7ea2\u7eff\u84dd)\uff0c\u7531\u8fd9\u4e09\u79cd\u539f\u8272\u53ef\u4ee5\u7ec4\u6210\u5176\u4ed6\u5404\u79cd\u989c\u8272\uff0c\u5728PNG\u56fe\u7247\u7684\u5b58\u50a8\u4e2d\uff0c\u6bcf\u4e2a\u989c\u8272\u5360\u67098bit\uff0c\u5373\u6709256\u79cd\u989c\u8272\uff0c\u4e00\u5171\u5305\u542b256\u7684\u4e09\u6b21\u65b9\u989c\u8272\uff0c\u537316777216\u4e2d\u989c\u8272\uff0c\u800c\u4eba\u7c7b\u7684\u773c\u775b\u53ef\u4ee5\u533a\u5206\u7ea61,000\u4e07\u79cd\u4e0d\u540c\u7684\u989c\u8272\uff0c\u5269\u4e0b\u65e0\u6cd5\u533a\u5206\u7684\u989c\u8272\u5c31\u67096777216\u3002LSB\u9690\u5199\u5c31\u662f\u4fee\u6539\u4e86\u50cf\u7d20\u4e2d\u7684\u6700\u4f4e\u4f4d\uff0c\u628a\u4e00\u4e9b\u4fe1\u606f\u9690\u85cf\u8d77\u6765\u3002PNG\u56fe\u7247\u662f\u4e00\u79cd\u65e0\u635f\u538b\u7f29\uff0c\u4e5f\u53ea\u6709\u5728\u65e0\u635f\u538b\u7f29\u6216\u65e0\u538b\u7f29\u7684\u56fe\u7247\uff08BMP\u56fe\u7247\u662f\u4e00\u79cd\u65e0\u538b\u7f29\uff09\u4e0a\u5b9e\u73b0LSB\u9690\u5199\u3002\u5982\u679c\u662fJPG\u56fe\u7247\uff0c\u5c31\u6ca1\u529e\u6cd5\u4f7f\u7528LSB\u9690\u5199\u4e86\u3002\n\n# \u5173\u4e8e\u76f2\u6c34\u5370\n\n\u6c34\u5370\u5305\u62ec\u660e\u6c34\u5370\u548c\u76f2\u6c34\u5370\uff0c\u6211\u4eec\u901a\u5e38\u8bf4\u7684\u6c34\u5370\u6307\u660e\u6c34\u5370\uff0c\u5373\u80fd\u7528\u8089\u773c\u76f4\u63a5\u770b\u51fa\u6765\u7684\u6c34\u5370\u3002\u76f2\u6c34\u5370\u5219\u4e0d\u50cf\u660e\u6c34\u5370\u90a3\u6837\uff0c\u80fd\u7528\u8089\u773c\u76f4\u63a5\u770b\u51fa\u6765\uff0c\u901a\u5e38\u662f\u91c7\u7528\u4e00\u4e9b\u6280\u672f\uff08\u6bd4\u5982LSB\u9690\u5199\uff09\u5c06\u4e00\u4e9b\u80fd\u6807\u8bc6\u6570\u636e\uff08\u6bd4\u5982\uff1a\u56fe\u7247\u4f5c\u8005\u3001\u6240\u5728\u7f51\u7ad9(\u5e73\u53f0)\u6216\u53d1\u5e03\u56fe\u7247\u7684\u5f53\u4e8b\u4eba\u4fe1\u606f\uff09\u5199\u5165\u88ab\u4fdd\u62a4\u7684\u56fe\u7247\u4e2d\u3002\u76f2\u6c34\u5370\u76f8\u5bf9\u4e8e\u660e\u6c34\u5370\u66f4\u52a0\u9690\u853d\uff0c\u4e0d\u6613\u5bdf\u89c9\u3002\u53e6\u5916\uff0c\u660e\u6c34\u5370\u53ef\u8f7b\u6613\u5730\u901a\u8fc7\u6253\u9a6c\u8d5b\u514b\u3001P\u56fe\u5de5\u5177\u6d88\u9664\uff0c\u800c\u6d88\u9664\u76f2\u6c34\u5370\u5219\u6709\u4e00\u5b9a\u96be\u5ea6\u548c\u6280\u672f\u95e8\u69db\u3002<\/code><\/pre>\n\n\n\n<pre class=\"wp-block-code\"><code>**\u5e7f\u4e49\u6765\u8bf4\uff0c\u6697\u6c34\u5370\u53ef\u4ee5\u7406\u89e3\u4e3a\uff0c\u5728\u4e00\u4e9b\u8f7d\u4f53\u6570\u636e\u4e2d\u6dfb\u52a0\u9690\u85cf\u6807\u8bb0\uff0c\u8fd9\u4e9b\u6807\u8bb0\u5728\u4eba\u7c7b\u548c\u673a\u5668\u53ef\u8f7b\u6613\u611f\u77e5\u7684\u8303\u56f4\u4e4b\u5916\u3002**\u76f8\u8f83\u4e8e\u5e38\u89c1\u7684\u660e\u6c34\u5370\uff0c\u6bd4\u5982\u56fe\u7247\u548c\u89c6\u9891\u4e2d\u7684\u516c\u53f8logo\u3001\u7eb8\u5e01\u4e2d\u7684\u6c34\u5370\u7eb9\u7406\u7b49\u3002\u6697\u6c34\u5370\u5bf9\u5927\u90e8\u5206\u611f\u77e5\u7cfb\u7edf\u6765\u8bf4\u662f\u900f\u660e\u7684\uff0c\u4e0d\u53ef\u89c1\u7684\u3002\n\n\u57fa\u4e8e\u56fe\u50cf\u7684\u6697\u6c34\u5370\u6280\u672f\u662f\u6697\u6c34\u5370\u91cc\u9762\u6700\u6210\u719f\u7684\u4e00\u79cd\uff0c\u5d4c\u5165\u65b9\u6cd5\u4e5f\u591a\u79cd\u591a\u6837\u3002\u6839\u636e\u5d4c\u5165\u7ef4\u5ea6\u4e0d\u540c\uff0c\u53c8\u53ef\u4ee5\u7ec6\u5206\u4e3a\u7a7a\u57df\u6c34\u5370\u548c\u53d8\u6362\u57df\u6c34\u5370\u3002\u7a7a\u57df\u6c34\u5370\u53ef\u4ee5\u7b80\u5355\u7684\u7406\u89e3\u4e3a\u76f4\u63a5\u5bf9\u89e3\u7801\u540e\u7684\u56fe\u50cf\u50cf\u7d20\u503c\u8fdb\u884c\u7f16\u8f91\u548c\u5d4c\u5165\u4fe1\u606f\uff1b\u53d8\u6362\u57df\u6c34\u5370\u662f\u5c06\u56fe\u50cf\u7684\u50cf\u7d20\u4fe1\u606f\u8f6c\u6362\u5230\u53d8\u6362\u57df\uff0c\u7136\u540e\u5728\u53d8\u6362\u57df\u6dfb\u52a0\u4fe1\u606f\u540e\u518d\u8f6c\u6362\u5230\u7a7a\u57df\uff0c\u8fd9\u4e2a\u8fc7\u7a0b\u4e2d\u7a7a\u57df\u4fe1\u606f\u4e5f\u4f1a\u88ab\u4fee\u6539\u3002\u6240\u4ee5\u53d8\u6362\u57df\u6c34\u5370\u4e5f\u53ef\u4ee5\u7406\u89e3\u4e3a\u95f4\u63a5\u7684\u7a7a\u57df\u6c34\u5370\u3002\n\n1.2.1.1 \u7a7a\u57df\u6c34\u5370\n\n\u76f4\u63a5\u9009\u53d6\u7a7a\u57df\u7279\u5b9a\u4f4d\u7f6e\u7684\u50cf\u7d20\u503c\u8fdb\u884c\u4fee\u6539\u6765\u5d4c\u5165\u4fe1\u606f\u3002\u7a7a\u95f4\u57df\u6c34\u5370\u7684\u96be\u70b9\u5728\u4e8e\u5982\u4f55\u5728\u7a7a\u57df\u9009\u62e9\u6c34\u5370\u533a\u57df\u548c\u5728\u6c34\u5370\u5757\u4e2d\u5982\u4f55\u5d4c\u5165\u6570\u636e\u3002\u6839\u636e\u6c34\u5370\u533a\u57df\u9009\u53d6\u65b9\u5f0f\u4e0d\u540c\u53ef\u5206\u4e3a\u4e0b\u9762\u51e0\u79cd\u3002\n\nLeast Significant Bits\uff08LSB\uff09\u6c34\u5370\u8fd9\u4e2a\u65b9\u6cd5\u7b80\u5355\u7c97\u66b4\uff0c\u76f4\u63a5\u5728\u56fe\u50cf\u7684\u50cf\u7d20\u503c\u4e0a\u8fdb\u884c\u4fee\u6539\u3002\u5047\u8bbe\u6c34\u5370\u8f7d\u4f53\u4e3a\u989c\u8272\u6df1\u5ea68bit\u7684RGB\u56fe\u50cf\uff0c\u6c34\u5370\u4fe1\u606f\u4e3a\u4e8c\u503c\u5316\u56fe\u50cf\u3002\n\n1. \u52a0\u6c34\u5370\u8fc7\u7a0b\n\n\u5bf9\u539f\u59cb\u56fe\u50cf\u7684\u6700\u540e1bit\uff08\u6700\u4f4e\u4f4d\uff09\u7f6e\u96f6\uff0c\n\n\u5c06\u7528\u4e8c\u8fdb\u5236\u8868\u793a\u7684\u7248\u6743\u4fe1\u606f\uff0c\u8d4b\u503c\u7ed9\u539f\u59cb\u56fe\u50cf\u7684\u6700\u540e1bit\uff0c\u5b9e\u73b0\u7248\u6743\u4fe1\u606f\u5199\u5165\u3002\uff08\u5199\u5165\u540e\u539f\u59cb\u56fe\u50cf\u50cf\u7d20\u503c\u6539\u53d8\u5e45\u5ea6\u4e3a1\uff09\n\n2. \u89e3\u6c34\u5370\u8fc7\u7a0b\n\n\u5c06\u56fe\u50cf\u7684\u524d7bits\uff08\u9ad87\u4f4d\uff09\u7f6e\u96f6\uff0c\n\n\u63d0\u8d77\u6700\u540e1bit\uff08\u6700\u4f4e\u4f4d\uff09\uff0c\u5f97\u5230\u7248\u6743\u4fe1\u606f\u3002\n\n3. \u7b97\u6cd5\u7b80\u8bc4\n\n\u6b64\u7b97\u6cd5\u8ba1\u7b97\u590d\u6742\u5ea6\u76f8\u5bf9\u8f83\u4f4e\uff1b\u5bf9\u56fe\u50cf\u89c6\u89c9\u6548\u679c\u5f71\u54cd\u5f88\u5c0f\uff1b\u9c81\u68d2\u6027\u8f83\u4f4e\uff0c\u96be\u4ee5\u62b5\u6297\u5e38\u89c1\u7684\u6c34\u5370\u653b\u51fb\u624b\u6bb5\u3002\n\n1.2.1.2 \u53d8\u6362\u57df\u6c34\u5370\n\n\u53d8\u6362\u57df\u6c34\u5370\u6700\u7ec8\u4e5f\u4f1a\u4fee\u6539\u7a7a\u57df\u7684\u6570\u636e\uff0c\u4e0e\u4e0a\u9762\u4e0d\u540c\u7684\u662f\u5e76\u4e0d\u662f\u76f4\u63a5\u4fee\u6539\u50cf\u7d20\u503c\uff0c\u800c\u662f\u5c06\u56fe\u50cf\u7684\u7a7a\u57df\u6570\u636e\u8f6c\u6362\u5230\u53d8\u6362\u57df\uff0c\u7136\u540e\u6309\u7167\u4e00\u5b9a\u65b9\u6cd5\u5199\u5165\u6c34\u5370\u4fe1\u606f\uff0c\u6700\u540e\u518d\u5c06\u53d8\u6362\u57df\u6570\u636e\u8f6c\u6362\u56de\u7a7a\u57df\u7684\u503c\u5e76\u91cd\u65b0\u751f\u6210\u56fe\u50cf\u4fe1\u606f\u3002\n\n\u5e38\u89c1\u7684\u53d8\u6362\u57df\u6c34\u5370\u7528\u5230\u7684\u57fa\u7840\u7b97\u6cd5\u6709 DCT\u3001DFT\u3001DWT\uff0c\u8fd9\u4e09\u4e2a\u7b97\u6cd5\u7279\u70b9\u5404\u4e0d\u76f8\u540c\uff0c\u53ef\u5355\u72ec\u4f7f\u7528\u4e5f\u53ef\u4ee5\u4ea4\u53c9\u4f7f\u7528\u3002\n\n\u57fa\u4e8e DCT \u7684\u6c34\u5370\u7b97\u6cd5--DCT \u79bb\u6563\u4f59\u5f26\u53d8\u6362\u5c5e\u4e8e\u4e00\u79cd\u7279\u6b8a\u7684 DFT \u79bb\u6563\u5085\u91cc\u53f6\u53d8\u6362\uff0c\u5728\u6697\u6c34\u5370\u9886\u57df\u6709\u975e\u5e38\u76f8\u4f3c\u7684\u4f7f\u7528\u624b\u6cd5\u3002\u6240\u4ee5\u8fd9\u91cc\u4ec5\u5bf9\u57fa\u4e8e DCT \u53d8\u6362\u7684\u6c34\u5370\u8fdb\u884c\u5c55\u5f00\u3002\u8fd9\u4e2a\u6846\u67b6\u901a\u7528\u6027\u6bd4\u8f83\u5f3a\uff0c\u5728\u5206\u5757\u548c\u9891\u57df\u4f4d\u7f6e\u9009\u62e9\u5408\u7406\u7684\u60c5\u51b5\u4e0b\uff0c\u53ef\u4ee5\u62b5\u6297\u4e00\u5b9a\u7a0b\u5ea6\u88c1\u526a\u3001\u7f29\u653e\u548c\u538b\u7f29\u7b49\u5e38\u89c1\u7684\u653b\u51fb\u624b\u6bb5\u3002\n\n\u57fa\u4e8e DWT \u7684\u6c34\u5370\u7b97\u6cd5--\u7eaf\u7cb9\u7684\u4ec5\u9002\u7528 DWT \u6c34\u5370\u7b97\u6cd5\u76f8\u5bf9\u8f83\u5c11\uff0c\u5927\u90e8\u5206\u60c5\u51b5\u662f DWT + DCT \u3001DWT + SVD \u7b49\u7c7b\u578b\u7684\u7ec4\u5408\u6c34\u5370\u3002\u4e3a\u4f55\u8981\u4f7f\u7528 DWT \u5462\uff0c\u539f\u56e0\u662f\u5b83\u53ef\u4ee5\u5728\u4e00\u5b9a\u7a0b\u5ea6\u4e0a\u63d0\u9ad8\u6c34\u5370\u7684\u9c81\u68d2\u6027\u5e76\u4e14\u5bf9\u56fe\u7247\u753b\u8d28\u5f71\u54cd\u8f83\u5c0f\u3002<\/code><\/pre>\n\n\n\n<pre class=\"wp-block-code\"><code># \u5982\u4f55\u53bb\u9664\u770b\u4e0d\u5230\u7684\u6c34\u5370\n\n**\u76f4\u63a5\u590d\u5236\u6587\u672c\uff0c\u6709\u7684\u4f1a\u5d4c\u5165\u7279\u5b9a\u5b57\u4f53\u3002\u6700\u597d\u662f\u590d\u5236\u5230txt\u5199\u5b57\u677f\u91cc\uff0c\u518d\u91cd\u65b0\u590d\u5236\u3002**\n==\n\u5176\u5b9e\u8fd9\u624b\u6bb5\u65e0\u975e\u6d89\u53ca\u4e24\u65b9\u9762\uff0c\u4e00\u79cd\u5c31\u662f\u56fe\u7247\u7684\u989d\u5916\u5143\u6570\u636e\u88ab\u505a\u624b\u811a\uff0c\u6bd4\u5982\u76f8\u673a\u4f1a\u6dfb\u52a0exif\u5143\u6570\u636e\u4fe1\u606f\uff0c\u90a3\u4e48\u5220\u9664exif\u5143\u6570\u636e\u4fe1\u606f\u5373\u53ef\u3002\u4e00\u79cd\u56fe\u7247\u672c\u8eab\u7684\u50cf\u7d20\u88ab\u505a\u624b\u811a\uff0c\u4e5f\u5c31\u662fpixel\u70b9\u6570\u636e\u88ab\u8f7b\u5fae\u53d8\u52a8\uff0c\u7531\u4e8e\u8f7b\u5fae\u8272\u5dee\u4e0d\u5f71\u54cd\u4eba\u7c7b\u53ef\u89c1\u6548\u679c\uff0c\u6240\u4ee5\u80fd\u88ab\u6697\u85cf\u4e00\u7cfb\u5217\u6570\u636e\u3002\u6700\u7b80\u5355\u7684\u5e94\u5bf9\u5c31\u662f\u91cd\u5199\u6574\u4e2a\u56fe\u7247\u50cf\u7d20\uff0c\u6bd4\u5982\u4e0d\u4fdd\u7559alpha\u900f\u660e\u4fe1\u606f\uff0c\u9664\u4e86\u6587\u5b57rgb255,255,255\uff0c\u5176\u4f59\u4e00\u5f8b\u53d8\u62100,0,0\uff0c\u795e\u4ed9\u4e5f\u627e\u4e0d\u5230\u4f60\u3002\n==\n\u6211\u53d1\u73b0\u5f88\u591a\u4eba\u6839\u672c\u4e0d\u61c2\u57fa\u672c\u7684\u56fe\u50cf\u6e32\u67d3\u539f\u7406\uff0c\u6240\u4ee5\u591a\u8bf4\u4e00\u4e0b\uff0c\u9996\u5148\u5927\u5bb6\u8981\u660e\u767d\uff0c\u56fe\u50cf\u7684\u57fa\u672c\u6784\u6210\u662f\u50cf\u7d20\uff0c\u65e0\u8bba\u591a\u590d\u6742\u7684\u56fe\u6848\uff0c\u6700\u7ec8\u5728\u56fe\u50cf\u5c42\u9762\u90fd\u662f\u4e00\u4e2a\u4e2apixel\u7ec4\u6210\uff0c\u6bd4\u5982\u56fe\u50cf\u5927\u5c0f1024x768,\u5373\u53ef\u4ee5\u62c6\u5206\u4e3a786432\u4e2a\u50cf\u7d20\uff0c\u800c\u4e00\u4e2argb\u771f\u5f6924\u4f4d\u50cf\u7d20\u53ef\u4ee5\u5b58\u50a8\u4e09\u4e2a\u5b57\u8282\uff0c\u4e5f\u5c31\u662f\u67092359296\u5b57\u8282\u53ef\u4ee5\u4f9b\u9690\u85cf\u6570\u636e\uff0c\u5085\u7acb\u53f6\u53d8\u6362\u4e5f\u597d\uff0c\u4e8c\u503c\u5316\u53d8\u6362\u4e5f\u597d\uff0cWalsh\u53d8\u6362\u4e5f\u7f62\u3002\u90fd\u53eb\u201c\u7b97\u6cd5\u201d,\u800c\u5177\u4f53\u50cf\u7d20\u503c\u662f\u201c\u5b58\u50a8\u5bf9\u8c61\u201d,\u9690\u85cf\u6570\u636e\u5728\u56fe\u7247\uff0c\u662f\u7531\u7b97\u6cd5\u8f6c\u6362\u6570\u636e\u5230\u56fe\u50cf\uff0c\u4e16\u4e0a\u4e0d\u53ea\u6709\u5085\u7acb\u53f6\u4e00\u79cd\u7b97\u6cd5\uff0c\u4f46\u4efb\u4f55\u7b97\u6cd5\u5374\u4e00\u5b9a\u4f1a\u5b58\u50a8\u6570\u636e\u5230pixel\u4e2d\u53bb\u3002\u6240\u4ee5\u4e00\u65e6\u7834\u574f\u89c4\u5f8b\u6027\uff0c\u7eaf\u5316\u50cf\u7d20\uff0c\u4efb\u4f55\u9690\u85cf\u7b97\u6cd5\u90fd\u6ca1\u7528\uff0c\u56e0\u4e3a\u5b83\u5b58\u50a8\u7684\u6e20\u9053\u7834\u574f\u4e86\u3002\u6240\u4ee5\u53bb\u9690\u85cf\u6c34\u5370\uff0c\u5173\u952e\u5c31\u662f\u7834\u574fpixel\u4e2drgb\u7684\u9690\u85cf\u6570\u636e\u53ef\u80fd\u6027\uff0c\u6700\u7b80\u5355\u7684\u65b9\u5f0f\uff0c\u5c31\u662f\u4ee5\u7f16\u7a0b\u65b9\u5f0f\u53bb\u5dee\u503c\uff0c\u7edf\u4e00\u6210\u7eaf\u8272\u9ed1\u767d\u3002\n==\n\u6709\u9690\u85cf\u5185\u5bb9\u7684\u56fe\uff0c\u65e0\u8bba\u7b97\u6cd5\u4e3a\u4f55\u79cd\uff0c\u6570\u636e\u90fd\u4f1a\u5206\u6563\u4fdd\u5b58\u5728\u50cf\u7d20\u4e2d\uff0c\u8fd9\u662f\u4efb\u4f55\u7b97\u6cd5\u90fd\u6539\u53d8\u4e0d\u4e86\u7684\u6b65\u9aa4\u3002\u6240\u4ee5\u6700\u6839\u672c\u7684\u53bb\u9690\u85cf\u4fe1\u606f\u505a\u6cd5\uff0c\u5c31\u662f\u51cf\u5c11\u56fe\u50cf\u4e2d\u7684\u5dee\u5f02\u5316\u50cf\u7d20(\u7b97\u6cd5\u53ea\u662f\u5de5\u5177,\u600e\u4e48\u7b97\u968f\u4fbf)\uff0c\u8ba9\u8272\u57df\u76f8\u8fd1\u7684\u50cf\u7d20\u5c3d\u53ef\u80fd\u8d8b\u540c\uff0c\u603b\u4e4b\u5c3d\u53ef\u80fd\u51cf\u5c11\u4e0d\u540c\u7684pixel(\u5c3d\u53ef\u80fd\u5f80\u4e09\u539f\u8272\u8868\u9760\uff0c\u6bd4\u5982\u4e09\u539f\u8272\u8868\u4e2dred\u662f255,0,0\uff0c\u90a3\u5c31\u6240\u6709\u8fd1\u4f3c\u503c\u90fd\u6765\u8fd9\u4e2a\uff0c\u4e0d\u8981\u7279\u6b8a\u503c\uff0c\u518d\u4fdd\u9669\u70b9\u5c31\u968f\u673a\u50cf\u7d20\u66ff\u6362\u5168\u56fe\u539f\u6709\u50cf\u7d20\uff0c\u548c\u539f\u6709\u8272\u5f69\u6839\u672c\u65e0\u5173)\uff0c\u603b\u4e4b\u8ba9\u56fe\u50cf\u4e0a\u4e0d\u540c\u50cf\u7d20\u503c\u8d8a\u5c11\u8d8a\u597d\uff0c\u8272\u5f69\u8d8a\u5c11\uff0c\u8d8a\u5bb9\u6613\u7834\u574f\u9690\u85cfpixel\u4e2d\u7684\u6570\u636e\uff0c\u540c\u65f6\u548c\u539f\u56fe\u5dee\u5f02\u8d8a\u5927\u8d8a\u597d\uff0c\u5dee\u5f02\u8d8a\u5927\uff0c\u8d8a\u96be\u4ee5\u6062\u590d\u9690\u85cf\u6570\u636e\u3002\u8fd8\u662f\u90a3\u53e5\u8bdd\uff0c\u5982\u679c\u4f60\u4e00\u5f20\u56fe\u50cf\u7d20\u9664\u4e86rgb255\uff0c255,255\u5c31\u662frgb0,0,0\uff0c\u795e\u4ed9\u4e5f\u6ca1\u529e\u6cd5\u77e5\u9053\u4f60\u662f\u8c01\u3002\u7528\u4ed9\u4fa0\u5c0f\u8bf4\u7684\u8bf4\u6cd5\uff0c\u8fd9\u53eb\u4e00\u529b\u7834\u4e07\u6cd5\uff0c\u65e0\u8bba\u62c9\u4f38\u91cd\u62cd\u6216\u8005\u6a21\u7cca\u5316\uff0c\u5176\u5b9e\u90fd\u662f\u5728\u7834\u574f\u539f\u56fe\u50cf\u7d20\uff0c\u9ebb\u70e6\u800c\u4e14\u4e0d\u4e00\u5b9a\u6709\u7528(\u56e0\u4e3a\u6539\u53d8\u7a0b\u5ea6\u4e0d\u4e00\u5b9a\u591f\uff0c\u597d\u7b97\u6cd5\u662f\u53ef\u4ee5\u5bb9\u9519\u7684)\uff0c\u4e0d\u5982\u76f4\u63a5\u7834\u574f\u7b97\u6cd5\u6839\u57fa\uff0c\u5168\u56fe\u50cf\u7d20\u5927\u5e45\u5ea6\u53d8\u5316\uff0c\u4f9d\u5b58\u4e8e\u50cf\u7d20\u7684\u9690\u542b\u6570\u636e\u81ea\u7136\u4e5f\u6ca1\u7528\u4e86\u3002<\/code><\/pre>\n\n\n\n<h5 class=\"wp-block-heading\">\u53c2\u8003\u94fe\u63a5\uff1a<\/h5>\n\n\n\n<p>\u5982\u4f55\u53bb\u9664\u770b\u4e0d\u5230\u7684\u6c34\u5370<br><a href=\"https:\/\/www.williamlong.info\/archives\/6549.html\">https:\/\/www.williamlong.info\/archives\/6549.html<\/a><\/p>\n\n\n\n<p>\u6709\u6ca1\u6709\u4ec0\u4e48\u9632\u6b62\u6216\u67e5\u770b\u622a\u56fe\u51fa\u73b0\u9690\u85cf\u6c34\u5370\u7684\u65b9\u6cd5\u6216\u8f6f\u4ef6\uff1f<br><a href=\"https:\/\/meta.appinn.net\/t\/topic\/32906\">https:\/\/meta.appinn.net\/t\/topic\/32906<\/a><\/p>\n\n\n\n<p>\u591a\u76ca\u662f\u5982\u4f55\u67e5\u622a\u56fe\u7684\uff1f\u660e\u3001\u6697\u6c34\u5370\uff0c\u6253\u5de5\u4eba\u6765\u4e86\u89e3\u4e00\u4e0b\uff01<br><a href=\"https:\/\/mp.weixin.qq.com\/s\/0n1UzCBQNLmdHfl3LQbmhg\">https:\/\/mp.weixin.qq.com\/s\/0n1UzCBQNLmdHfl3LQbmhg<\/a><\/p>\n\n\n\n<p>\u8b66\u60d5\uff01\u85cf\u5728APP\u622a\u5c4f\u91cc\u7684\u201c\u6697\u6c34\u5370\u201d\uff01<br><a href=\"https:\/\/mp.weixin.qq.com\/s\/dDRIRtqq-eztY70CbkfEHA\">https:\/\/mp.weixin.qq.com\/s\/dDRIRtqq-eztY70CbkfEHA<\/a><\/p>\n\n\n\n<p>\u524d\u7aef\u622a\u56fe\u8eab\u4efd\u6eaf\u6e90<br><a href=\"https:\/\/mp.weixin.qq.com\/s\/4mDEU6obZG_fBm8V7s0H6A\">https:\/\/mp.weixin.qq.com\/s\/4mDEU6obZG_fBm8V7s0H6A<\/a><\/p>\n\n\n\n<p>A Challengers Handbook by Caesum<br><a href=\"http:\/\/www.caesum.com\/handbook\/stego.htm\">http:\/\/www.caesum.com\/handbook\/stego.htm<\/a><br><a href=\"http:\/\/www.caesum.com\/handbook\/Stegsolve.jar\">http:\/\/www.caesum.com\/handbook\/Stegsolve.jar<\/a><\/p>\n\n\n\n<p>\u6700\u8fd1\u7206\u51fa\u8c46\u74e3\u56fe\u7247\u4e2d\u7684\u76f2\u6c34\u5370\u5982\u4f55\u9a8c\u8bc1\uff1f<br><a href=\"https:\/\/zhuanlan.zhihu.com\/p\/471664337\">https:\/\/zhuanlan.zhihu.com\/p\/471664337<\/a><\/p>\n\n\n\n<p>\u77e5\u4e4e\u559c\u8fce\u5168\u5e73\u53f0\u9690\u5199\u6c34\u5370<br><a href=\"https:\/\/www.v2ex.com\/t\/877614\">https:\/\/www.v2ex.com\/t\/877614<\/a><\/p>\n\n\n\n<p>\u7edd\u4e86\uff0c\u77e5\u4e4e\u7adf\u7136\u628a\u4f60\u7684\u4fe1\u606f\u85cf\u5728\u622a\u56fe\u91cc<br><a href=\"https:\/\/www.51cto.com\/article\/718585.html\">https:\/\/www.51cto.com\/article\/718585.html<\/a><\/p>\n\n\n\n<p>\u56fe\u7247\u76f2\u6c34\u5370\u67e5\u770b\u5668<br><a href=\"http:\/\/www.atoolbox.net\/Tool.php?Id=1052\">http:\/\/www.atoolbox.net\/Tool.php?Id=1052<\/a><\/p>\n\n\n\n<p>\u56fe\u7247\u76f2\u6c34\u5370\u5728\u7ebf\u5de5\u5177<br><a href=\"https:\/\/stegonline.iculture.cc\/\">https:\/\/stegonline.iculture.cc\/<\/a><\/p>\n\n\n\n<p>\u8bf7\u95ee\u5982\u4f55\u67e5\u770b\u56fe\u7247\u7684\u6570\u5b57\u6c34\u5370\uff1f \u5982\u4f55\u6dfb\u52a0\u4fee\u6539\u5220\u9664\u56fe\u7247\u7684\u6570\u5b57\u6c34\u5370\uff1f<br><a href=\"https:\/\/zhidao.baidu.com\/question\/354142510.html\">https:\/\/zhidao.baidu.com\/question\/354142510.html<\/a><\/p>\n\n\n\n<p>\u9690\u79d8\u7684\u5370\u8bb0\uff1a\u6697\u6c34\u5370\u5b9e\u8df5\u6280\u672f\u5206\u4eab<br><a href=\"https:\/\/www.secrss.com\/articles\/32116\">https:\/\/www.secrss.com\/articles\/32116<\/a><\/p>\n\n\n\n<p>\u6570\u5b57\u6c34\u5370\u5728\u6570\u636e\u5b89\u5168\u4fdd\u62a4\u4e2d\u7684\u5e94\u7528\u5b9e\u8df5\u548c\u4f18\u5316<br><a href=\"https:\/\/www.bilibili.com\/read\/cv21727671?from=articleDetail\">https:\/\/www.bilibili.com\/read\/cv21727671?from=articleDetail<\/a><\/p>\n\n\n\n<p>\u9690\u5f62\u6c34\u5370\u8bbe\u7f6e\u53ca\u67e5\u770b #\u63d0\u4f9b\u4ee3\u7801\u6837\u4f8b\u53ef\u4ee5\u6d4b\u8bd5<br><a href=\"https:\/\/www.zhihu.com\/question\/50677827\/answer\/122388524\">https:\/\/www.zhihu.com\/question\/50677827\/answer\/122388524<\/a><\/p>\n\n\n\n<p>\u963f\u91cc\u5df4\u5df4\u516c\u53f8\u6839\u636e\u622a\u56fe\u67e5\u5230\u6cc4\u9732\u4fe1\u606f\u7684\u5177\u4f53\u5458\u5de5\u7684\u6280\u672f\u662f\u4ec0\u4e48\uff1f<br><a href=\"https:\/\/www.zhihu.com\/question\/50735753\/answer\/122593277\">https:\/\/www.zhihu.com\/question\/50735753\/answer\/122593277<\/a><\/p>\n\n\n\n<p>\u6697\u6c34\u5370\u7684\u5b9e\u73b0\u601d\u8def\u5206\u4eab #\u63d0\u4f9b\u4ee3\u7801\u6837\u4f8b\u53ef\u4ee5\u6d4b\u8bd5<br><a href=\"https:\/\/juejin.cn\/post\/7202519872303874109\">https:\/\/juejin.cn\/post\/7202519872303874109<\/a><\/p>\n\n\n\n<p>Blind&amp;Invisible Watermark \uff0c\u56fe\u7247\u76f2\u6c34\u5370\uff0c\u63d0\u53d6\u6c34\u5370\u65e0\u987b\u539f\u56fe\uff01 #\u63d0\u4f9b\u4ee3\u7801\u6837\u4f8b\u53ef\u4ee5\u6d4b\u8bd5<br><a href=\"https:\/\/github.com\/guofei9987\/blind_watermark\">https:\/\/github.com\/guofei9987\/blind_watermark<\/a><\/p>\n\n\n\n<p>\u6587\u672c\u76f2\u6c34\u5370\uff1a\u628a\u4fe1\u606f\u9690\u533f\u5230\u6587\u672c\u4e2d\uff0cput invisible blind watermark into a text.<br><a href=\"https:\/\/github.com\/guofei9987\/text_blind_watermark\">https:\/\/github.com\/guofei9987\/text_blind_watermark<\/a><\/p>\n\n\n\n<p>\u5728 Mac \u4e0a\u7684\u201c\u7167\u7247\u201d\u4e2d\u8c03\u6574\u7167\u7247\u7684\u5149\u6548\u3001\u66dd\u5149\u7b49<br><a href=\"https:\/\/support.apple.com\/zh-cn\/guide\/photos\/pht806aea6a6\/mac\">https:\/\/support.apple.com\/zh-cn\/guide\/photos\/pht806aea6a6\/mac<\/a><\/p>\n\n\n\n<p>\u4e00\u79cd\u7f51\u9875\u6570\u5b57\u6c34\u5370\u56fe\u50cf\u751f\u6210\u3001\u8bc6\u522b\u3001\u6253\u5370\u65b9\u6cd5\u53ca\u88c5\u7f6e<br><a href=\"https:\/\/patents.google.com\/patent\/CN109190339A\/zh\">https:\/\/patents.google.com\/patent\/CN109190339A\/zh<\/a><\/p>\n\n\n\n<p>\u4e00\u79cd\u6587\u4ef6\u4fe1\u606f\u8f93\u51fa\u9632\u6cc4\u5bc6\u548c\u6eaf\u6e90\u8ffd\u8e2a\u7684\u65b9\u6cd5\u548c\u7cfb\u7edf<br><a href=\"https:\/\/patents.google.com\/patent\/CN107423629B\/zh\">https:\/\/patents.google.com\/patent\/CN107423629B\/zh<\/a><\/p>\n\n\n\n<p>\u4e00\u79cd\u5728\u6587\u672c\u6587\u6863\u4e2d\u5d4c\u5165\u53ca\u68c0\u6d4b\u6570\u5b57\u6c34\u5370\u7684\u65b9\u6cd5\u548c\u88c5\u7f6e<br><a href=\"https:\/\/patents.google.com\/patent\/CN100364326C\/zh\">https:\/\/patents.google.com\/patent\/CN100364326C\/zh<\/a><\/p>\n\n\n\n<p>\u56fe\u89e3\u6570\u636e\u5b89\u5168\u4e2d\u5fc3\uff08Data Security Center\uff0cDSC\uff09<br><a href=\"https:\/\/support.huaweicloud.com\/productdesc-dsc\/dsc_01_1002.html\">https:\/\/support.huaweicloud.com\/productdesc-dsc\/dsc_01_1002.html<\/a><\/p>\n\n\n\n<p>\u6570\u636e\u5b89\u5168\u4e2d\u5fc3 DSC&gt; API\u53c2\u8003&gt; API\u8bf4\u660e&gt; \u56fe\u7247\u6c34\u5370&gt; \u56fe\u7247\u5d4c\u5165\u6697\u6c34\u5370<br><a href=\"https:\/\/support.huaweicloud.com\/intl\/zh-cn\/api-dsc\/CreateImageWatermark.html\">https:\/\/support.huaweicloud.com\/intl\/zh-cn\/api-dsc\/CreateImageWatermark.html<\/a><\/p>\n\n\n\n<p>\u63d2\u5165\u56fe\u7247\u6c34\u5370<br><a href=\"https:\/\/support.microsoft.com\/zh-cn\/office\/%E6%8F%92%E5%85%A5%E5%9B%BE%E7%89%87%E6%B0%B4%E5%8D%B0-b48f5c1e-8b71-4aa3-b753-bc661760cd3a\">https:\/\/support.microsoft.com\/zh-cn\/office\/%E6%8F%92%E5%85%A5%E5%9B%BE%E7%89%87%E6%B0%B4%E5%8D%B0-b48f5c1e-8b71-4aa3-b753-bc661760cd3a<\/a><\/p>\n\n\n\n<p>Word \u4e2d\u7684\u6c34\u5370<br><a href=\"https:\/\/support.microsoft.com\/zh-cn\/office\/word-%E4%B8%AD%E7%9A%84%E6%B0%B4%E5%8D%B0-e8317e40-ba36-493f-9cb8-6b93537b14d8\">https:\/\/support.microsoft.com\/zh-cn\/office\/word-%E4%B8%AD%E7%9A%84%E6%B0%B4%E5%8D%B0-e8317e40-ba36-493f-9cb8-6b93537b14d8<\/a><\/p>\n\n\n\n<p>\u5728 Excel \u4e2d\u6dfb\u52a0\u6c34\u5370<br><a href=\"https:\/\/support.microsoft.com\/zh-cn\/office\/%E5%9C%A8-excel-%E4%B8%AD%E6%B7%BB%E5%8A%A0%E6%B0%B4%E5%8D%B0-a372182a-d733-484e-825c-18ddf3edf009\">https:\/\/support.microsoft.com\/zh-cn\/office\/%E5%9C%A8-excel-%E4%B8%AD%E6%B7%BB%E5%8A%A0%E6%B0%B4%E5%8D%B0-a372182a-d733-484e-825c-18ddf3edf009<\/a><\/p>\n\n\n\n<p>=END=<\/p>\n","protected":false},"excerpt":{"rendered":"<p>=Start= \u7f18\u7531\uff1a \u524d\u6bb5\u65f6\u95f4\u6709\u4e2a\u6570\u636e\u6cc4\u9732\u6eaf\u6e90\u7684case\u6d89\u53ca\u5230\u4e86\u6c34\u5370\u76f8\u5173\u7684\u77e5\u8bc6\uff0c\u4e4b\u524d\u6211\u5bf9\u6c34\u5370\u5c24\u5176\u662f\u6697\u6c34\u5370\u7684\u4e86 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[23,25,12],"tags":[1923,1701,1924,963,1700,1922],"class_list":["post-5418","post","type-post","status-publish","format-standard","hentry","category-knowledgebase-2","category-security","category-tools","tag-stegsolve","tag-watermark","tag-1924","tag-963","tag-1700","tag-1922"],"views":4933,"_links":{"self":[{"href":"https:\/\/ixyzero.com\/blog\/wp-json\/wp\/v2\/posts\/5418","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ixyzero.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ixyzero.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ixyzero.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/ixyzero.com\/blog\/wp-json\/wp\/v2\/comments?post=5418"}],"version-history":[{"count":1,"href":"https:\/\/ixyzero.com\/blog\/wp-json\/wp\/v2\/posts\/5418\/revisions"}],"predecessor-version":[{"id":5419,"href":"https:\/\/ixyzero.com\/blog\/wp-json\/wp\/v2\/posts\/5418\/revisions\/5419"}],"wp:attachment":[{"href":"https:\/\/ixyzero.com\/blog\/wp-json\/wp\/v2\/media?parent=5418"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ixyzero.com\/blog\/wp-json\/wp\/v2\/categories?post=5418"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ixyzero.com\/blog\/wp-json\/wp\/v2\/tags?post=5418"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}