{"id":804,"date":"2017-05-17T15:23:49","date_gmt":"2017-05-17T07:23:49","guid":{"rendered":"https:\/\/ntzyz.io\/?p=804"},"modified":"2017-09-18T19:32:52","modified_gmt":"2017-09-18T11:32:52","slug":"implement-aes-128-ecb","status":"publish","type":"post","link":"https:\/\/archive.ntzyz.io\/2017\/05\/17\/implement-aes-128-ecb\/","title":{"rendered":"[\u4f5c\u4e1a] AES-128-ECB \u5b9e\u73b0"},"content":{"rendered":"<style>p.indent { text-indent: 2em } <\/style>\n<p class=\"indent\">\u9996\u5148\u5462\u8fd9\u4efd\u4ee3\u7801\u662f\u8fd9\u5b66\u671f\u9009\u4fee\u8bfe\u7684\u5927\u4f5c\u4e1a\uff0c\u524d\u540e\u4e5f\u82b1\u4e86\u70b9\u5fc3\u601d\uff0c\u4e8e\u662f\u8fd8\u662f\u8d34\u5230\u8fd9\u513f\uff0c\u987a\u4fbf\u7ed9\u535a\u5ba2\u9664\u9664\u8349ww<\/p>\n<p class=\"indent\">\u4f5c\u4e1a\u7684\u9898\u76ee\u6709\u4e24\u5927\u7c7b\uff0c\u4e00\u7c7b\u662f\u4f7f\u7528\u5e38\u89c1\u7684\u5bf9\u79f0\/\u975e\u5bf9\u79f0\u52a0\u5bc6\u7b97\u6cd5\uff08DES\/AES\/RC5\/RSA\/Blowfish\/blabla\uff09\u5b9e\u73b0\u4e00\u4e2a\u53ef\u7528\u7684\u52a0\u89e3\u5bc6\u5de5\u5177\uff0c\u53e6\u4e00\u4e2a\u5219\u662f\u5b9e\u73b0\u4e00\u4e2aHASH\u7a0b\u5e8f\uff0c\u7c7b\u4f3c\u4e8e md5sum \u6216\u8005\u662f sha256sum \u8fd9\u79cd\u3002\u6211\u9009\u62e9\u4e86\u505a AES \u4e3b\u8981\u662f\u6709\u51e0\u4e2a\u539f\u56e0\uff1a<\/p>\n<ol type=\"1\" style=\"style=\"padding-left: 2em; list-style-position: outside;\"\">\n<li>\u8001\u5e08\u8bf4\u4e86\uff0c\u6742\u51d1\u7b97\u6cd5\u4e8e\u52a0\u89e3\u5bc6\u7b97\u6cd5\u6bd4\u8f83\u8d77\u6765\uff0c\u5b9e\u73b0\u96be\u5ea6\u4f4e\uff0c\u56e0\u6b64\u57fa\u7840\u6210\u7ee9\u5c31\u4f1a\u76f8\u5bf9\u4f4e\u4e00\u70b9\uff08\u7136\u800c\u6211\u89c9\u5f97\u4e24\u4e2a\u90fd\u86ee\u7b80\u5355\u7684\u554a\uff09\u3002<\/li>\n<li>\u5728\u4e0a\u8bfe\u4e4b\u524d\u5c31\u5df2\u7ecf\u63a5\u89e6\u8fc7 AES \u8fd9\u4e2a\u7b97\u6cd5\u4e86\uff08\u5f52\u529f\u4e8e Shadowsocks \u5566\uff09\uff0c\u7528\u4e86\u8fd9\u4e48\u4e45\u7684\u4e1c\u897f\uff0c\u4e5f\u7b97\u662f\u5bf9\u5b83\u7684\u5b9e\u73b0\u6bd4\u8f83\u611f\u5174\u8da3\u7684\uff08\u7136\u800c\u600e\u4e48\u60f3\u90fd\u77e5\u9053\u81ea\u5df1\u5199\u7684\u7834\u4ee3\u7801\u6027\u80fd\u4f1a\u88ab OpenSSL \u540a\u7740\u6253\uff09\u3002<\/li>\n<\/ol>\n<p class=\"indent\">\u5f53\u7136\u6309\u7167\u8001\u5e08\u7684\u8bf4\u6cd5\uff0c\u7b80\u5355\u7684\u5b9e\u73b0\u53ea\u662f\u6700\u57fa\u672c\u7684\u8981\u6c42\uff0c\u6240\u4ee5\u6211\u8fd9\u91cc\u6253\u7b97\u505a\u4e09\u5206\u5b9e\u73b0\uff0c\u5206\u522b\u662f CPU \u5355\u7ebf\u7a0b\uff0cCPU \u591a\u7ebf\u7a0b\u548c GPGPU\u3002\u5176\u5b9e\u8fd9\u91cc\u9762\u6838\u5fc3\u4ee3\u7801\u90fd\u662f\u5b8c\u5168\u4e00\u6837\u7684\uff0c\u65e0\u975e\u5c31\u662f\u5206\u7ec4\u52a0\u5bc6\u548c\u5bc6\u94a5\u66f4\u65b0\u4e0a\u6709\u70b9\u533a\u522b\uff0c\u4f46\u662f\u542c\u8d77\u6765\u5c31\u9ad8\u5927\u4e0a\u4e86\u5f88\u591a\uff08\u6ca1\u6bdb\u75c5\uff09\u3002<\/p>\n<p><!--more--><\/p>\n<p class=\"indent\">AES \u672c\u8eab\u4e00\u6b21\u53ea\u80fd\u4f7f\u7528 128bit \u7684\u5bc6\u94a5\u5bf9 128bit \u7684\u6570\u636e\u8fdb\u884c\u52a0\u5bc6\uff0c\u6240\u4ee5\u5728\u5b9e\u9645\u4e2d\u5fc5\u987b\u4f7f\u7528\u5206\u7ec4\u52a0\u5bc6\u7b97\u6cd5\u6765\u5b8c\u6210\u5927\u6587\u4ef6\u7684\u5904\u7406\u3002\u5f80\u7b80\u5355\u91cc\u8bb2\uff0c\u5206\u7ec4\u52a0\u5bc6\u4e0d\u8fc7\u662f\u628a\u6570\u636e\u5206\u6210\u7b49\u957f\u7684\u5206\u7247\uff0c\u7136\u540e\u6bcf\u6b21\u5bf9\u4e00\u4e2a\u5206\u7247\u8fdb\u884c\u52a0\u5bc6\uff0c\u7136\u540e\u5728\u5c06\u52a0\u5bc6\u540e\u7684\u5206\u7247\u7ec4\u5408\u6210\u6587\u4ef6\u3002\u89e3\u5bc6\u8fc7\u7a0b\u4e0e\u4e4b\u7c7b\u4f3c\u3002\u8fd9\u79cd\u6700\u7b80\u5355\u7c97\u66b4\u5730\u5206\u7ec4\u52a0\u5bc6\u88ab\u79f0\u4e3a\u7535\u5b50\u5bc6\u7801\u672c\uff08ECB\uff09\u6a21\u5f0f\u3002\u7136\u800c\u5b9e\u9645\u4e0a\uff0c\u7531\u4e8e\u76f8\u540c\u5206\u7247\u6570\u636e\u4f7f\u7528\u76f8\u540c\u7684\u5bc6\u94a5\u8fdb\u884c\u52a0\u5bc6\u540e\uff0c\u8f93\u51fa\u5fc5\u7136\u4e5f\u662f\u76f8\u540c\u7684\uff0c\u8fd9\u6837\u4e5f\u5c31\u4f1a\u4f7f\u52a0\u5bc6\u7684\u5185\u5bb9\u5e26\u6709\u7279<br \/>\n\u5f81\uff0c\u5b58\u5728\u6f5c\u5728\u7684\u9690\u60a3\uff0c\u4e8e\u662f\u4eba\u4eec\u63d0\u51fa\u4e00\u4e9b\u4f1a\u4fee\u6539\u540e\u7eed\u5206\u7ec4\u7684\u5bc6\u94a5\u7684\u5206\u7ec4\u52a0\u5bc6\u7b97\u6cd5\uff0c\u6bd4\u5982\u5bc6\u7801\u5206\u7ec4\u94fe\u63a5\u6a21\u5f0f\uff08CBC\uff09\u3001\u5bc6\u6587\u53cd\u9988\u6a21\u5f0f\uff08CFB\uff09\u548c\u8ba1\u6570\u5668\u6a21\u5f0f\uff08CTR\uff09\u3002CBC \u548c CFB \u5728\u8bbe\u8ba1\u4e0a\uff0c\u4e0b\u4e00\u5206\u7247\u7684\u5bc6\u94a5\u53d7\u5230\u4e0a\u4e00\u5206\u7247\u7684\u5f71\u54cd\uff0c\u4e5f\u5c31\u610f\u5473\u7740\u8fd9\u4e2a\u7b97\u6cd5\u5fc5\u987b\u7ebf\u6027\u7684\u5bf9\u5bc6\u7801\u8fdb\u884c\u52a0\u5bc6\uff0c\u4e0d\u5229\u4e8e\u591a\u7ebf\u7a0b\u7684\u5b9e\u73b0\u3002\u90a3\u4e48\u53ef\u9009\u7684\u5c31\u662f CTR \u548c ECB \u6a21\u5f0f\u4e86\u3002\u4e8c\u9009\u4e00\u7684\u8bdd\uff0c\u9009\u62e9 ECB \u800c\u4e0d\u662f CTR \u4e3b\u8981\u662f\u56e0\u4e3a\u6211\u61d2\uff0cECB \u53ea\u8981\u4e00\u4e2a\u51fd\u6570\u6539\u53d8\u4f20\u5165\u6307\u9488\u5c31\u80fd\u8dd1\u4e86\uff08<\/p>\n<p class=\"indent\">\u5206\u533a\u6a21\u5f0f\u6572\u5b9a\u4e4b\u540e\uff0c\u5c31\u8f6e\u5230 AES \u7b97\u6cd5\u7684\u4e86\u89e3\u548c\u5b9e\u73b0\u4e86\u3002\u6574\u4e2a\u7b97\u6cd5\u4e3b\u8981\u7531\u4e24\u90e8\u5206\u7ec4\u6210\uff1a\u6570\u636e\u53d8\u6362\u548c\u5bc6\u94a5\u62d3\u5c55\u3002<\/p>\n<p class=\"indent\">\u9996\u5148\u5b9e\u73b0\u4e00\u4efd\u5bc6\u94a5\u62d3\u5c55\u51fd\u6570\uff0c\u5176\u7b97\u6cd5\u53c2\u8003\uff1a<a href=\"https:\/\/en.wikipedia.org\/wiki\/Rijndael_key_schedule\" target=\"_blank\">Rijndael key schedule &#8211; Wikipedia<\/a>\uff0c\u4f7f\u7528\u4e0a\u5f88\u7b80\u5355\uff0c\u76f4\u63a5\u5c06\u5bc6\u94a5\u6307\u9488\u4f20\u5165\u5373\u53ef\uff0c\u8fd4\u56de\u7684\u662f\u5806\u4e0a\u5206\u914d\u7684\u7ed3\u679c\uff0c\u7528\u5b8c\u8bb0\u5f97\u8981 free\uff08\uff08<\/p>\n<pre lang=\"cpp\">\r\nextern uint8_t round_const[];\r\nuint8_t *key_schedule(const uint8_t *input_key) {\r\n\tuint8_t *output = (uint8_t *)malloc((10 + 1) * 16 * sizeof(uint8_t));\r\n\tuint8_t temp[4], *cursor_4_before, *cursor_16_before, *cursor_current;\r\n\tsize_t counter, i, j;\r\n\r\n\t\/\/ Copy the first 16 bytes\r\n\tmemcpy(output, input_key, 16 * sizeof(uint8_t));\r\n\r\n\t\/\/ Initialize cursors.\r\n\tcursor_current = output + 16;\r\n\tcursor_4_before = cursor_current - 4;\r\n\tcursor_16_before = cursor_current - 16;\r\n\r\n\t\/\/ Rock and roll.\r\n\t\r\n\tfor (counter = 0; counter != 10; counter++) {\r\n\t\t\/\/ RotWord\r\n\t\ttemp[3] = cursor_4_before[0];\r\n\t\ttemp[0] = cursor_4_before[1];\r\n\t\ttemp[1] = cursor_4_before[2];\r\n\t\ttemp[2] = cursor_4_before[3];\r\n\r\n\t\t\/\/ SubBytes and add\r\n\t\tfor (i = 0; i != 4; ++i) {\r\n\t\t\tcursor_current[i] = sbox[temp[i]] ^ cursor_16_before[i];\r\n\t\t\tif (i == 0) {\r\n\t\t\t\tcursor_current[i] ^= round_const[counter];\r\n\t\t\t}\r\n\t\t}\r\n\r\n\t\t\/\/ Forward all cursors\r\n\t\tcursor_current += 4, cursor_4_before += 4, cursor_16_before += 4;\r\n\r\n\t\t\/\/ Three step remaining is simple.\r\n\t\tfor (i = 0; i != 3; ++i) {\r\n\t\t\tfor (j = 0; j != 4; ++j) {\r\n\t\t\t\tcursor_current[j] = cursor_4_before[j] ^ cursor_16_before[j];\r\n\t\t\t}\r\n\t\t\tcursor_current += 4, cursor_4_before += 4, cursor_16_before += 4;\r\n\t\t}\r\n\t}\r\n\r\n\treturn output;\r\n}\r\n<\/pre>\n<p class=\"indent\">AES 128 \u4f1a\u5bf9\u8f93\u5165\u6570\u636e\u8fdb\u884c\u5341\u8f6e\u5904\u7406\uff0c\u5176\u4e2d AddRoundKey \u6b65\u9aa4\u4f7f\u7528\u7684\u5bc6\u94a5\u5c31\u662f\u7531\u4e0a\u9762\u51fd\u6570\u751f\u6210\u7684\u3002<\/p>\n<p class=\"indent\">AES 128 \u7684\u5341\u8f6e\u5904\u7406\u4e2d\uff0c\u5fc5\u7136\u4f1a\u6709\u7684\u56db\u4e2a\u6b65\u9aa4\uff1a\u5b57\u8282\u66ff\u6362\u3001\u884c\u79fb\u4f4d\u3001\u5217\u6df7\u6dc6\u548c\u5bc6\u94a5\u76f8\u52a0\uff08XOR\uff09\u3002<\/p>\n<p class=\"indent\">\u5b57\u8282\u66ff\u6362\u63d0\u4f9b\u4e86\u52a0\u5bc6\u6cd5\u975e\u7ebf\u6027\u7684\u53d8\u6362\u80fd\u529b\uff0c\u5b9e\u73b0\u8d77\u6765\u76f8\u5f53\u5bb9\u6613\uff1a\u5c06\u6bcf\u4e00\u4e2a\u5143\u7d20\u4ee3\u5165S\u76d2\u4e2d\u5373\u53ef\uff1a<\/p>\n<pre lang=\"cpp\">\r\nextern uint8_t sbox[];\r\nvoid sub_bytes(uint8_t *input) {\r\n\tint i = 15;\r\n\tdo {\r\n\t\tinput[i] = sbox[input[i]];\r\n\t} while (--i >= 0);\r\n}\r\n<\/pre>\n<p class=\"indent\">\u884c\u79fb\u4f4d\u5c31\u662f\u5c06\u77e9\u9635\u7684\u6bcf\u4e00\u884c\u5de6\u79fb\u4e00\u5b9a\u91cf\uff0cAES 128 \u4e2d\uff0c\u7b2c\u4e00\u884c\u4e0d\u53d8\uff0c\u7b2c\u4e8c\u884c\u79fb 1 \u4f4d\uff0c\u7b2c\u4e09\u884c\u79fb 2 \u4f4d\uff0cblabla\u3002<\/p>\n<pre lang=\"cpp\">\r\nvoid shift_rows(uint8_t *input) {\r\n\tsize_t index, inner_index;\r\n#define OFFSET(i, j) ((j) * 4 + (i))\r\n\tfor (index = 0; index != 4; ++index) {\r\n\t\tuint8_t temp;\r\n\t\tinner_index = index;\r\n\t\twhile (inner_index-- > 0) {\r\n\t\t\ttemp = input[OFFSET(index, 0)];\r\n\t\t\tinput[OFFSET(index, 0)] = input[OFFSET(index, 1)];\r\n\t\t\tinput[OFFSET(index, 1)] = input[OFFSET(index, 2)];\r\n\t\t\tinput[OFFSET(index, 2)] = input[OFFSET(index, 3)];\r\n\t\t\tinput[OFFSET(index, 3)] = temp;\r\n\t\t}\r\n\t}\r\n#undef OFFSET\r\n}\r\n<\/pre>\n<p class=\"indent\">\u8fd9\u91cc\u8865\u5145\u4e00\u4e0b\uff0cAES \u5bf9\u8f93\u5165\u7684\u660e\u6587\u548c\u5bc6\u94a5\u7684\u5904\u7406\u6709\u4e00\u70b9\u53cd\u4eba\u7c7b\uff0c\u6bd4\u5982\u660e\u6587 {a0, a1, a2, a3, &#8230;, a15}\uff0c\u6211\u4eec\u8981\u628a\u5b83\u770b\u6210\u8fd9\u6837\u7684\u4e00\u4e2a\u77e9\u9635\uff1a<\/p>\n<pre>\r\na0  a4  a8  a12\r\na1  a5  a9  a13\r\na2  a6  a10 a14\r\na3  a7  a11 a15\r\n<\/pre>\n<p class=\"indent\">\u6240\u4ee5\u4e0a\u9762\u7ed9\u51fa\u7684 OFFSET \u5b8f\u4e4d\u4e00\u770b\u6bd4\u8f83\u53cd\u4eba\u7c7b\u3002\u3002\u5bf9\u5e94\u7684\uff0c\u884c\u79fb\u4f4d\u540e\u7684\u77e9\u9635\u5e94\u8be5\u662f\u8fd9\u6837\u7684\uff1a<\/p>\n<pre>\r\na0  a4  a8  a12\r\na5  a9  a13 a1  \r\na10 a14 a2  a6  \r\na15 a3  a7  a11\r\n<\/pre>\n<p class=\"indent\">\u5728\u5185\u5b58\u91cc\u4e5f\u5c31\u662f\u8fd9\u6837\u7684\u6570\u7ec4\uff1a {a0, a5, a10, a15, a4, a9, a14, a3, &#8230;}<\/p>\n<p class=\"indent\">\u5269\u4e0b\u4e24\u4e2a\u51fd\u6570\u5c31\u662f\u5217\u6df7\u6dc6\u548c\u5bc6\u94a5\u76f8\u52a0\u3002\u5176\u4e2d\u5217\u6df7\u6dc6\u53ef\u4ee5\u89c6\u4e3aRijndael\u6709\u9650\u57df\u4e4b\u4e0b\u7684\u77e9\u9635\u4e58\u6cd5\uff0c\u8be6\u60c5\u53ef\u4ee5\u770bWikipedia\uff0c\u6216\u8005\u662f\u7ffb\u7ffb\u4e66\u3002\u8fd9\u91cc\u6211\u63d0\u524d\u6253\u4e86\u4e2a\u8868\uff0c\u6765\u52a0\u901f\u5b8c\u6210\u3002\u53d8\u91cf\u540d\u53eb cache \u662f\u672c\u6765\u60f3\u5b9e\u65f6\u8ba1\u7b97\u7f13\u5b58\u7ed3\u679c\u7684\uff0c\u6700\u540e\u8fd8\u662f\u5e72\u8106\u76f4\u63a5\u6253\u5168\u4e86\u3002\u3002<\/p>\n<pre>\r\nstatic inline uint8_t mul2(uint8_t a) {\r\n\tstatic uint8_t cache[256] = {\r\n\t\t0x00, 0x02, 0x04, 0x06, 0x08, 0x0A, 0x0C, 0x0E, 0x10, 0x12, 0x14, 0x16, 0x18, 0x1A, 0x1C, 0x1E,\r\n\t\t0x20, 0x22, 0x24, 0x26, 0x28, 0x2A, 0x2C, 0x2E, 0x30, 0x32, 0x34, 0x36, 0x38, 0x3A, 0x3C, 0x3E,\r\n\t\t0x40, 0x42, 0x44, 0x46, 0x48, 0x4A, 0x4C, 0x4E, 0x50, 0x52, 0x54, 0x56, 0x58, 0x5A, 0x5C, 0x5E,\r\n\t\t0x60, 0x62, 0x64, 0x66, 0x68, 0x6A, 0x6C, 0x6E, 0x70, 0x72, 0x74, 0x76, 0x78, 0x7A, 0x7C, 0x7E,\r\n\t\t0x80, 0x82, 0x84, 0x86, 0x88, 0x8A, 0x8C, 0x8E, 0x90, 0x92, 0x94, 0x96, 0x98, 0x9A, 0x9C, 0x9E,\r\n\t\t0xA0, 0xA2, 0xA4, 0xA6, 0xA8, 0xAA, 0xAC, 0xAE, 0xB0, 0xB2, 0xB4, 0xB6, 0xB8, 0xBA, 0xBC, 0xBE,\r\n\t\t0xC0, 0xC2, 0xC4, 0xC6, 0xC8, 0xCA, 0xCC, 0xCE, 0xD0, 0xD2, 0xD4, 0xD6, 0xD8, 0xDA, 0xDC, 0xDE,\r\n\t\t0xE0, 0xE2, 0xE4, 0xE6, 0xE8, 0xEA, 0xEC, 0xEE, 0xF0, 0xF2, 0xF4, 0xF6, 0xF8, 0xFA, 0xFC, 0xFE,\r\n\t\t0x1B, 0x19, 0x1F, 0x1D, 0x13, 0x11, 0x17, 0x15, 0x0B, 0x09, 0x0F, 0x0D, 0x03, 0x01, 0x07, 0x05,\r\n\t\t0x3B, 0x39, 0x3F, 0x3D, 0x33, 0x31, 0x37, 0x35, 0x2B, 0x29, 0x2F, 0x2D, 0x23, 0x21, 0x27, 0x25,\r\n\t\t0x5B, 0x59, 0x5F, 0x5D, 0x53, 0x51, 0x57, 0x55, 0x4B, 0x49, 0x4F, 0x4D, 0x43, 0x41, 0x47, 0x45,\r\n\t\t0x7B, 0x79, 0x7F, 0x7D, 0x73, 0x71, 0x77, 0x75, 0x6B, 0x69, 0x6F, 0x6D, 0x63, 0x61, 0x67, 0x65,\r\n\t\t0x9B, 0x99, 0x9F, 0x9D, 0x93, 0x91, 0x97, 0x95, 0x8B, 0x89, 0x8F, 0x8D, 0x83, 0x81, 0x87, 0x85,\r\n\t\t0xBB, 0xB9, 0xBF, 0xBD, 0xB3, 0xB1, 0xB7, 0xB5, 0xAB, 0xA9, 0xAF, 0xAD, 0xA3, 0xA1, 0xA7, 0xA5,\r\n\t\t0xDB, 0xD9, 0xDF, 0xDD, 0xD3, 0xD1, 0xD7, 0xD5, 0xCB, 0xC9, 0xCF, 0xCD, 0xC3, 0xC1, 0xC7, 0xC5,\r\n\t\t0xFB, 0xF9, 0xFF, 0xFD, 0xF3, 0xF1, 0xF7, 0xF5, 0xEB, 0xE9, 0xEF, 0xED, 0xE3, 0xE1, 0xE7, 0xE5,\r\n\t};\r\n\treturn cache[a];\r\n}\r\nvoid mix_columns(uint8_t *input) {\r\n\tsize_t i;\r\n\tuint8_t temp[16], tmp;\r\n\r\n\tmemcpy(temp, input, 16);\r\n\r\n\tfor (i = 0; i != 16; i += 4) {\r\n\t\ttmp = temp[i] ^ temp[i + 1] ^ temp[i + 2] ^ temp[i + 3];\r\n\t\tinput[i + 0] = mul2(temp[i + 0] ^ temp[i + 1]) ^ temp[i + 0] ^ tmp;\r\n\t\tinput[i + 1] = mul2(temp[i + 1] ^ temp[i + 2]) ^ temp[i + 1] ^ tmp;\r\n\t\tinput[i + 2] = mul2(temp[i + 2] ^ temp[i + 3]) ^ temp[i + 2] ^ tmp;\r\n\t\tinput[i + 3] = mul2(temp[i + 3] ^ temp[i + 0]) ^ temp[i + 3] ^ tmp;\r\n\t}\r\n}\r\n<\/pre>\n<p class=\"indent\">\u6700\u540e\u662f\u5bc6\u94a5\u76f8\u52a0\u3002\u592a\u7b80\u5355\u4e86\u5bf9\u5e94\u4f4d\u7f6e Xor \u5c31\u884c\u4e86\uff0c\u751a\u81f3\u4e0d\u7528\u5355\u72ec\u5199\u4e2a\u51fd\u6570\u3002\u5c06\u8fd9\u4ee5\u4e0a\u56db\u90e8\u5206\u7ec4\u5408\u8d77\u6765\u4e4b\u540e\uff0c\u53ea\u8981\u5199\u4e00\u4e2a\u51fd\u6570\u5bf9\u660e\u6587\u8fdb\u884c\u5341\u8f6e\u52a0\u5bc6\uff0c\u51fd\u6570\u5927\u6982\u8fd9\u6837\uff1a<\/p>\n<pre lang=\"cpp\">\r\nvoid aes_128_single_block(const uint8_t *input, uint8_t *round_keys, uint8_t *output) {\r\n\tsize_t i, j;\r\n\tuint8_t *result, *cursor_round_key;\r\n\r\n\t\/\/ initialize cursors.\r\n\tresult = output;\r\n\tcursor_round_key = round_keys;\r\n\r\n\t\/\/ Copy plain text.\r\n\tfor (i = 0; i != 16; ++i) {\r\n\t\tresult[i] = input[i] ^ cursor_round_key[i];\r\n\t}\r\n\tcursor_round_key += 16;\r\n\r\n\t\/\/ Run rounds excluding the last round.\r\n\tfor (i = 0; i != 9; ++i) {\r\n\t\tsub_bytes(result);\r\n\t\tshift_rows(result);\r\n\t\tmix_columns(result);\r\n\t\t\/\/ Add round\r\n\t\tfor (j = 0; j != 16; ++j) {\r\n\t\t\tresult[j] = result[j] ^ cursor_round_key[j];\r\n\t\t}\r\n\t\tcursor_round_key += 16;\r\n\t}\r\n\r\n\t\/\/ Now the last round.\r\n\tsub_bytes(result);\r\n\tshift_rows(result);\r\n\tfor (i = 0; i != 16; ++i) {\r\n\t\tresult[i] = result[i] ^ cursor_round_key[i];\r\n\t}\r\n}\r\n<\/pre>\n<p class=\"indent\">\u5176\u4e2d round_keys \u5c31\u662f\u6700\u5f00\u5934\u7ed9\u7684\u51fd\u6570\u751f\u6210\u7684\u5e26\u62d3\u5c55\u7684\u5bc6\u94a5\u3002<\/p>\n<p class=\"indent\">\u5b8c\u6210\u4ee5\u4e0a\u7684\u52a0\u5bc6\u76f8\u5173\u4ee3\u7801\u540e\uff0c\u53ea\u8981\u5c0f\u5e45\u6539\u52a8\u90e8\u5206\u4ee3\u7801\u5c31\u80fd\u5b9e\u73b0\u5bc6\u6587\u7684\u89e3\u5bc6\u4e86\u3002\u6bd4\u5982 AES \u91cc\u56db\u4e2a\u6b65\u9aa4\u7684\u5bf9\u5e94\u51fd\u6570\uff0c\u9664\u4e86\u8f6e\u5bc6\u94a5\u76f8\u52a0\u4ee5\u5916\uff0c\u5176\u4ed6\u4e09\u4e2a\u51fd\u6570\u90fd\u9700\u8981\u7f16\u5199\u5bf9\u5e94\u7684\u53cd\u51fd\u6570\uff08\u59d1\u4e14\u8fd9\u4e48\u53eb\u5427\uff09\u3002\u81f3\u4e8e\u8f6e\u5bc6\u94a5\u76f8\u52a0\u4ee5\u5916\uff0c\u672c\u8d28\u5de5\u4f5c\u5c31\u662f\u5c06\u8f6e\u5bc6\u94a5\u548c\u4f53\uff08state\uff09\u8fdb\u884c\u5f02\u6216\uff0c\u6839\u636e\u5f02\u6216\u7684\u6027\u8d28\uff0c\u4e24\u6b21\u5f02\u6216\u76f4\u63a5\u80fd\u5c31\u662f\u672c\u8eab\uff0c\u6240\u4ee5\u6ca1\u6709\u518d\u53bb\u6298\u817e\u4e86\u3002<\/p>\n<pre class=\"lang:cpp\">\r\nvoid aes::inverse_sub_bytes(byte *input) {\r\n    int i = 15;\r\n    do {\r\n        input[i] = inverse_sbox[input[i]];\r\n    } while (--i >= 0);\r\n}\r\n\r\nvoid inverse_shift_rows(byte *input) {\r\n\tint index, inner_index;\r\n#define OFFSET(i, j) ((j) * 4 + (i))\r\n\tfor (index = 0; index != 4; ++index) {\r\n\t\tbyte temp;\r\n\t\tinner_index = index;\r\n\t\twhile (inner_index-- > 0) {\r\n\t\t\ttemp = input[OFFSET(index, 3)];\r\n\t\t\tinput[OFFSET(index, 3)] = input[OFFSET(index, 2)];\r\n\t\t\tinput[OFFSET(index, 2)] = input[OFFSET(index, 1)];\r\n\t\t\tinput[OFFSET(index, 1)] = input[OFFSET(index, 0)];\r\n\t\t\tinput[OFFSET(index, 0)] = temp;\r\n\t\t}\r\n\t}\r\n#undef OFFSET\r\n}\r\n\r\nvoid aes::inverse_mix_columns(byte *input) {\r\n    size_t i;\r\n    byte temp[16], tmp;\r\n\r\n    memcpy(temp, input, 16);\r\n\r\n    for (i = 0; i != 16; i += 4) {\r\n        tmp = temp[i] ^ temp[i + 1] ^ temp[i + 2] ^ temp[i + 3];\r\n        input[i + 0] = mul2(temp[i + 0] ^ temp[i + 1]) ^ temp[i + 0] ^ tmp;\r\n        input[i + 1] = mul2(temp[i + 1] ^ temp[i + 2]) ^ temp[i + 1] ^ tmp;\r\n        input[i + 2] = mul2(temp[i + 2] ^ temp[i + 3]) ^ temp[i + 2] ^ tmp;\r\n        input[i + 3] = mul2(temp[i + 3] ^ temp[i + 0]) ^ temp[i + 3] ^ tmp;\r\n\r\n        byte u, v;\r\n        u = mul2(mul2(temp[i + 0] ^ temp[i + 2]));\r\n        v = mul2(mul2(temp[i + 1] ^ temp[i + 3]));\r\n        tmp = mul2(v ^ u);\r\n\r\n        input[i + 0] ^= tmp ^ u;\r\n        input[i + 2] ^= tmp ^ u;\r\n        input[i + 1] ^= tmp ^ v;\r\n        input[i + 3] ^= tmp ^ v;\r\n    }\r\n}\r\n<\/pre>\n<p class=\"indent\">\u6700\u540e\u7684\u89e3\u5bc6\u8fc7\u7a0b\u5c31\u662f\u52a0\u5bc6\u8fc7\u7a0b\u53cd\u7740\u6765\uff0c\u5199\u8d77\u6765\u4e5f\u6ca1\u4ec0\u4e48\u56f0\u96be\uff1a<\/p>\n<pre class=\"lang:cpp\">\r\nvoid aes::aes_decrypt_single_block(const byte *input, byte * const round_keys, byte *output) {\r\n    size_t i, j;\r\n    byte *result, *cursor_round_key;\r\n\r\n    \/\/ initialize cursors.\r\n    result = output;\r\n    cursor_round_key = round_keys + 160;\r\n\r\n    for (i = 0; i != 16; ++i) {\r\n        result[i] = input[i];\r\n    }\r\n\r\n    \/\/ The last round\r\n    for (i = 0; i != 16; ++i) {\r\n        result[i] = input[i] ^ cursor_round_key[i];\r\n    }\r\n\r\n    inverse_shift_rows(result);\r\n\r\n    inverse_sub_bytes(result);\r\n\r\n    cursor_round_key -= 16;\r\n\r\n#ifdef DEBUG\r\n    printf(\"# InvRound %d\\n\", 10);\r\n    print_key(result);\r\n#endif\r\n\r\n    \/\/ Run rounds excluding the last round.\r\n    for (i = 0; i != 9; ++i) {\r\n        for (j = 0; j != 16; ++j) {\r\n            result[j] = result[j] ^ cursor_round_key[j];\r\n        }\r\n        inverse_mix_columns(result);\r\n        inverse_shift_rows(result);\r\n        inverse_sub_bytes(result);\r\n        cursor_round_key -= 16;\r\n#ifdef DEBUG\r\n        printf(\"# InvRound %d\\n\", 10 - i);\r\n        print_key(result);\r\n#endif\r\n    }\r\n\r\n    \/\/ Now the last addRoundKey.\r\n    for (i = 0; i != 16; ++i) {\r\n        result[i] = result[i] ^ cursor_round_key[i];\r\n    }\r\n}\r\n<\/pre>\n<p class=\"indent\">\u4ee5\u4e0a\u5c31\u662f AES \u7684\u6240\u6709\u6838\u5fc3\u4ee3\u7801\u4e86\uff0c\u5269\u4e0b\u7684\u5c31\u662f\u5982\u4f55\u53bb\u8c03\u7528\u8fd9\u4e9b\u51fd\u6570\u3002\u591a\u7ebf\u7a0b\u65b9\u9762\uff0c\u4f9d\u9760 C++ \u7684 STL \u5e93\u80fd\u5f88\u5bb9\u6613\u5730\u5b9e\u73b0\u7ebf\u7a0b\u7684\u521b\u5efa\u548c\u9501\u63a7\u5236\u3002\u9996\u5148\u51c6\u5907\u4e00\u4e2a\u51fd\u6570\uff0c\u5c06 key_schedule \u548c aes \u52a0\u5bc6\/\u89e3\u5bc6\u51fd\u6570\u5305\u88f9\u5728\u4e00\u8d77\u3002\u518d\u51c6\u5907\u4e00\u4e2a\u51fd\u6570\u6309\u7167\u6307\u5b9a\u6b65\u957f\u53bb\u5bf9\u8f93\u5165\u6307\u9488\u5185\u5bb9\u8fdb\u884c\u52a0\u5bc6\/\u89e3\u5bc6\u64cd\u4f5c\uff0c\u4ee3\u7801\u5f88\u7b80\u5355\uff1a<\/p>\n<pre class=\"lang:cpp\">\r\nvoid process_unit(uint8_t *data_in, uint8_t *data_out, uint8_t *key, bool isEncrypt) {\r\n\taes_cpu::byte *rkey = aes_cpu::aes::key_schedule(key);\r\n\tif (isEncrypt) {\r\n\t\taes_cpu::aes::aes_128_single_block(data_in, rkey, data_out);\r\n\t}\r\n\telse {\r\n\t\taes_cpu::aes::aes_decrypt_single_block(data_in, rkey, data_out);\r\n\t}\r\n\tdelete[] rkey;\r\n}\r\n\r\nvoid thread_entry(uint8_t *data_in, uint8_t *data_out, uint8_t *key, size_t file_size, size_t current, size_t total, bool isEncrypt) {\r\n\tfor (uint32_t i = current; i < file_size \/ 16; i += total) {\r\n\t\tif (i % 10000 == 0 &#038;&#038; current == 0) {\r\n\t\t\tprintf(\"process: %.2lf\\r\", (double)i * 100 \/ (file_size \/ 16));\r\n\t\t}\r\n\t\tprocess_unit(data_in + 16 * i, data_out + 16 * i, key, isEncrypt);\r\n\t}\r\n}\r\n<\/pre>\n<p class=\"indent\">\u73b0\u5728\u53ea\u9700\u8981\u6839\u636e\u7528\u6237\u4f20\u5165\u7684\u7ebf\u7a0b\u6570\uff0c\u521b\u5efa\u82e5\u5e72\u7ebf\u7a0b\u5373\u53ef\u5b8c\u6210\u5de5\u4f5c\uff1a<\/p>\n<pre class=\"lang:cpp\">\r\nbool isEncrypt = true;\r\nstd::vector<std::thread> threads(thread_count);\r\n\r\n\/\/ Construct all threads, and let them go.\r\nfor (int i = 0; i != threads.size(); ++i) {\r\n    threads[i] = std::thread(thread_entry, data_in, data_out, key, full_block_size, i, threads.size(), isEncrypt);\r\n}\r\n\r\n\/\/ Sync for all threads.\r\nfor (int i = 0; i != threads.size(); ++i) {\r\n    threads[i].join();\r\n}\r\n<\/pre>\n<p class=\"indent\">\u6d89\u53ca\u5230\u4efb\u610f\u6587\u4ef6\u52a0\u7684\u65f6\u5019\u5c31\u4f1a\u9047\u5230\u4e00\u4e2a\u95ee\u9898\uff1a\u6587\u4ef6\u5927\u5c0f\u4e0d\u4e00\u5b9a\u662f 128 \u6bd4\u7279\u7684\u6574\u6570\u500d\u3002\u8fd9\u65f6\u5019\u5c31\u9700\u8981\u4f7f\u7528\u4e00\u4e9b\u5bc6\u7801\u5b66\u4e0a\u7684\u586b\u5145\u7b97\u6cd5\u3002\u6211\u7b80\u5355\u7684\u770b\u4e86\u4e00\u4e0b PKCS#7 \u4e0b\u7684\u586b\u5145\u65b9\u6cd5\uff0c\u7b80\u5355\u8bf4\u6765\u5c31\u662f\uff1a<\/p>\n<ol type=\"1\" style=\"padding-left: 2em; list-style-position: outside;\">\n<li>\u82e5\u6587\u4ef6\u6070\u597d\u4e3a 16 \u5b57\u8282\u7684\u6574\u6570\u500d\uff0c\u540e\u9762\u5f3a\u884c\u8865\u5341\u516d\u4f4d\uff1b<\/li>\n<li>\u586b\u5145\u5185\u5bb9\u4e3a\u5f53\u524d\u5927\u5c0f\u4e0e\u586b\u5145\u540e\u5927\u5c0f\u7684\u5dee\uff0c\u6bd4\u5982 \u5f53\u524d\u662f 126 \u5b57\u8282\uff0c\u5c31\u8865\u5145\u4e24\u4e2a 0x02\u3002\u5bf9\u4e8e\u4e0a\u65b9\u7684\u7279\u4f8b\uff0c\u5c31\u8865\u5145 16 \u4e2a 0x16\uff1b<\/li>\n<\/ol>\n<p class=\"indent\">\u8fd9\u91cc\u5c31\u4e0d\u628a\u51fd\u6570\u5217\u51fa\u6765\u4e86\uff0c\u4e00\u4e2a realloc \u4e00\u4e2a for \u5c31\u80fd\u89e3\u51b3\u3002\u8fd9\u6837\u6211\u4eec\u7684\u591a\u7ebf\u7a0b AES \u52a0\u89e3\u5bc6\u5c31\u5df2\u7ecf\u5168\u90e8\u5b8c\u6210\u4e86\uff0c\u63a5\u4e0b\u6765\u5c31\u662f\u5c06\u4ee5\u4e0a\u4ee3\u7801\u8fc1\u79fb\u5230 CUDA \u5e73\u53f0\u3002<\/p>\n<p class=\"indent\">\u4ece\u6574\u4f53\u4e0a\u770b\uff0cCUDA \u548c CPU \u7684\u4ee3\u7801\u57fa\u672c\u4e00\u81f4\uff08\u5e9f\u8bdd\u90fd\u662f AES \u80fd\u4e0d\u4e00\u6837\u6709\u9b3c\u4e86\uff09\uff0c\u4e3b\u8981\u7684\u533a\u522b\u5c31\u5728\u4e8e\u8c03\u7528 GPU \u662f\u4e00\u4e2a\u7c7b\u4f3c\u4e8e Master \u548c Slave \u901a\u8baf\u7684\u8fc7\u7a0b\u3002\u5728\u5b8c\u6210 PKCS#7 \u7684\u586b\u5145\u540e\uff0c\u6211\u4eec\u8981\u628a\u660e\u6587\uff0c\u5bc6\u94a5\u7b49\u590d\u5236\u5230\u663e\u5b58\uff0c\u540c\u65f6\u5728\u663e\u5b58\u91cc\u5206\u914d\u4e00\u5757\u7f13\u51b2\u533a\u6765\u4fdd\u5b58\u5bc6\u6587\uff0c\u4ee3\u7801\u5927\u81f4\u5982\u4e0b\uff1a<\/p>\n<pre class=\"lang:cpp>\r\nuint8_t *round_keys = key_schedule(keys);\r\nuint8_t *gpu_input = nullptr;\r\nuint8_t *gpu_round_keys = nullptr;\r\nuint8_t *gpu_output = nullptr;\r\ncudaError_t cudaStatus;\r\n\r\n#define ASSERT(s) \\\r\n    if (cudaStatus != cudaSuccess) { \\\r\n        fprintf(stderr, s\"\\n\"); \\\r\n        goto Error; \\\r\n    }\r\n\r\n\/\/ Select which GPU to work with.\r\ncudaStatus = cudaSetDevice(0);\r\nASSERT(\"cudaSetDevice\");\r\n\r\n\/\/ Prepare GPU memory block\r\ncudaStatus = cudaMalloc((void**)&gpu_input, size * sizeof(uint8_t));\r\nASSERT(\"cudaMalloc\");\r\ncudaStatus = cudaMalloc((void**)&gpu_round_keys, (11 * 16) * sizeof(uint8_t));\r\nASSERT(\"cudaMalloc\");\r\ncudaStatus = cudaMalloc((void**)&gpu_output, size * sizeof(uint8_t));\r\nASSERT(\"cudaMalloc\");\r\n\r\n\/\/ Copy data from memory to GPU memory.\r\ncudaStatus = cudaMemcpy(gpu_input, input, size * sizeof(uint8_t), cudaMemcpyHostToDevice);\r\nASSERT(\"cudaMemcpy: gpu_input\");\r\ncudaStatus = cudaMemcpy(gpu_round_keys, round_keys, (11 * 16) * sizeof(uint8_t), cudaMemcpyHostToDevice);\r\nASSERT(\"cudaMemcpy: gpu_round_keys\");\r\n<\/pre>\n<p class=\"indent\">\u7136\u540e\u5c31\u53ef\u4ee5\u542f\u52a8 GPU \u4e0a\u7684\u51fd\u6570\u4e86\uff1a<\/p>\n<pre class=\"lang:cpp>\r\nsize_t offset = 0;\r\nconst size_t threadsPerBlock = 512;\r\nconst size_t blockSize = 16;\r\nwhile (offset * threadsPerBlock * blockSize * 16 < size) {\r\n    if (offset % 100 == 0) {\r\n        printf(\"progress: %lf\\r\", offset * (double)threadsPerBlock * blockSize * 1600 \/ size);\r\n    }\r\n    if (isEncrypt) {\r\n        aes_128_single_block <<<blockSize, threadsPerBlock >>>(gpu_input, gpu_round_keys, gpu_output, size \/ 16, offset, threadsPerBlock * blockSize);\r\n    }\r\n    else {\r\n        aes_decrypt_single_block <<<blockSize, threadsPerBlock >>>(gpu_input, gpu_round_keys, gpu_output, size \/ 16, offset, threadsPerBlock * blockSize);\r\n    }\r\n    offset++;\r\n}\r\n<\/pre>\n<p class=\"indent\">\u6700\u540e\uff0c\u628a\u663e\u5b58\u4e0a\u7684\u5bc6\u6587\u590d\u5236\u56de\u5185\u5b58\uff0c\u518d\u5199\u5165\u5230\u6587\u4ef6\uff0c\u5c31\u5b8c\u6210\u4e86\u6574\u4e2a\u52a0\u5bc6\u8fc7\u7a0b\uff1a<\/p>\n<pre class=\"lang:cpp>\r\ncudaStatus = cudaGetLastError();\r\nASSERT(\"cudaGetLastError\");\r\ncudaStatus = cudaDeviceSynchronize();\r\nASSERT(\"cudaDeviceSynchronize\");\r\ncudaStatus = cudaMemcpy(output, gpu_output, size * sizeof(uint8_t), cudaMemcpyDeviceToHost);\r\nASSERT(\"cudaMemcpy\");\r\n<\/pre>\n<p class=\"indent\"># \u5f85\u7eed\uff08GPU\u548cCPU\u8981\u5728xx\u4e0a\u6bd4\u4e00\u6bd4\uff08\u6bd4\u5c31\u6bd4\uff09\uff09<\/p>\n<p class=\"indent\">\n<p class=\"indent\">\n<p class=\"indent\">\n<p class=\"indent\">\n<p class=\"indent\">\n","protected":false},"excerpt":{"rendered":"<p>\u9996\u5148\u5462\u8fd9\u4efd\u4ee3\u7801\u662f\u8fd9\u5b66\u671f\u9009\u4fee\u8bfe\u7684\u5927\u4f5c\u4e1a\uff0c\u524d\u540e\u4e5f\u82b1\u4e86\u70b9\u5fc3\u601d\uff0c\u4e8e\u662f\u8fd8\u662f\u8d34\u5230\u8fd9\u513f\uff0c\u987a\u4fbf\u7ed9\u535a\u5ba2\u9664\u9664\u8349ww \u4f5c\u4e1a\u7684\u9898\u76ee\u6709\u4e24 &hellip; <a href=\"https:\/\/archive.ntzyz.io\/2017\/05\/17\/implement-aes-128-ecb\/\" class=\"more-link\">\u7ee7\u7eed\u9605\u8bfb<span class=\"screen-reader-text\">[\u4f5c\u4e1a] AES-128-ECB \u5b9e\u73b0<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[38],"tags":[63,16,62,64],"_links":{"self":[{"href":"https:\/\/archive.ntzyz.io\/wp-json\/wp\/v2\/posts\/804"}],"collection":[{"href":"https:\/\/archive.ntzyz.io\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/archive.ntzyz.io\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/archive.ntzyz.io\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/archive.ntzyz.io\/wp-json\/wp\/v2\/comments?post=804"}],"version-history":[{"count":26,"href":"https:\/\/archive.ntzyz.io\/wp-json\/wp\/v2\/posts\/804\/revisions"}],"predecessor-version":[{"id":898,"href":"https:\/\/archive.ntzyz.io\/wp-json\/wp\/v2\/posts\/804\/revisions\/898"}],"wp:attachment":[{"href":"https:\/\/archive.ntzyz.io\/wp-json\/wp\/v2\/media?parent=804"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/archive.ntzyz.io\/wp-json\/wp\/v2\/categories?post=804"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/archive.ntzyz.io\/wp-json\/wp\/v2\/tags?post=804"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}