{"id":1751,"date":"2018-10-19T10:31:12","date_gmt":"2018-10-19T02:31:12","guid":{"rendered":"https:\/\/damogame.cn:15443\/wordpress\/?p=1751"},"modified":"2018-10-24T17:46:33","modified_gmt":"2018-10-24T09:46:33","slug":"tea%e5%8a%a0%e5%af%86-%e8%a7%a3%e5%af%86%e7%ae%97%e6%b3%95","status":"publish","type":"post","link":"https:\/\/i007.cc\/wordpress\/archives\/1751","title":{"rendered":"TEA\u52a0\u5bc6\/\u89e3\u5bc6\u7b97\u6cd5"},"content":{"rendered":"
\u5728\u6e38\u620f\u9879\u76ee\u4e2d\uff0c\u4e00\u822c\u9700\u8981\u5bf9\u8d44\u6e90\u6216\u6570\u636e\u8fdb\u884c\u52a0\u5bc6\u4fdd\u62a4\uff0c\u6700\u7b80\u5355\u9ad8\u6548\u7684\u52a0\u5bc6\u7b97\u6cd5\u5c31\u662f\u91c7\u7528\u4f4d\u4e0e\u6216\u4e4b\u7c7b\u7684\uff0c\u4f46\u662f\u6bd4\u8f83\u5bb9\u6613\u88ab\u4eba\u5206\u6790\u51fa\u6765\u3002<\/div>\n
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\n

TEA\u52a0\u5bc6\u7b97\u6cd5\u4e0d\u4f46\u6bd4\u8f83\u7b80\u5355\uff0c\u800c\u4e14\u6709\u5f88\u5f3a\u7684\u6297\u5dee\u5206\u5206\u6790\u80fd\u529b\uff0c\u52a0\u5bc6\u901f\u5ea6\u4e5f\u6bd4\u8f83\u5feb\u3002\u53ef\u4ee5\u6839\u636e\u9879\u76ee\u9700\u6c42\u8bbe\u7f6e\u52a0\u5bc6\u8f6e\u6570\u6765\u589e\u52a0\u52a0\u5bc6\u5f3a\u5ea6\u3002
\n1.\u52a0\u5bc6\u6838\u5fc3\u51fd\u6570<\/p>\n

\n
\n
void EncryptTEA(unsigned int *firstChunk, unsigned int *secondChunk, unsigned int* key)\r\n{\r\n    unsigned int y = *firstChunk;\r\n    unsigned int z = *secondChunk;\r\n    unsigned int sum = 0;\r\n\r\n    unsigned int delta = 0x9e3779b9;\r\n\r\n    for (int i = 0; i < 8; i++)\/\/8\u8f6e\u8fd0\u7b97(\u9700\u8981\u5bf9\u5e94\u4e0b\u9762\u7684\u89e3\u5bc6\u6838\u5fc3\u51fd\u6570\u7684\u8f6e\u6570\u4e00\u6837)\r\n    {\r\n        sum += delta;\r\n        y += ((z << 4) + key[0]) ^ (z + sum) ^ ((z >> 5) + key[1]);\r\n        z += ((y << 4) + key[2]) ^ (y + sum) ^ ((y >> 5) + key[3]);\r\n    }\r\n\r\n    *firstChunk = y;\r\n    *secondChunk = z;\r\n}<\/pre>\n
 <\/p>\n<\/div>\n<\/div>\n
2.\u89e3\u5bc6\u6838\u5fc3\u51fd\u6570<\/p>\n
void DecryptTEA(unsigned int *firstChunk, unsigned int *secondChunk, unsigned int* key)\r\n{\r\n    unsigned int  sum = 0;\r\n    unsigned int  y = *firstChunk;\r\n    unsigned int  z = *secondChunk;\r\n    unsigned int  delta = 0x9e3779b9;\r\n\r\n    sum = delta << 3; \/\/32\u8f6e\u8fd0\u7b97\uff0c\u6240\u4ee5\u662f2\u76845\u6b21\u65b9\uff1b16\u8f6e\u8fd0\u7b97\uff0c\u6240\u4ee5\u662f2\u76844\u6b21\u65b9\uff1b8\u8f6e\u8fd0\u7b97\uff0c\u6240\u4ee5\u662f2\u76843\u6b21\u65b9\r\n\r\n    for (int i = 0; i < 8; i++) \/\/8\u8f6e\u8fd0\u7b97\r\n    {\r\n        z -= (y << 4) + key[2] ^ y + sum ^ (y >> 5) + key[3];\r\n        y -= (z << 4) + key[0] ^ z + sum ^ (z >> 5) + key[1];\r\n        sum -= delta;\r\n    }\r\n\r\n    *firstChunk = y;\r\n    *secondChunk = z;\r\n}<\/pre>\n
\n
<\/pre>\n
<\/div>\n<\/div>\n
3.\u5c01\u88c5\u5bf9\u8f93\u5165\u6570\u636e\u8fdb\u884c\u52a0\u5bc6\u51fd\u6570<\/p>\n
\n
\n
\/\/buffer\uff1a\u8f93\u5165\u7684\u5f85\u52a0\u5bc6\u6570\u636ebuffer\uff0c\u5728\u51fd\u6570\u4e2d\u76f4\u63a5\u5bf9\u5143\u6570\u636ebuffer\u8fdb\u884c\u52a0\u5bc6\uff1bsize\uff1abuffer\u957f\u5ea6\uff1bkey\u662f\u5bc6\u94a5\uff1b\r\nvoid EncryptBuffer(char* buffer, int size, unsigned int* key)\r\n{\r\n    char *p = buffer;\r\n\r\n    int leftSize = size;\r\n\r\n    while (p < buffer + size &&\r\n        leftSize >= sizeof(unsigned int) * 2)\r\n    {\r\n        EncryptTEA((unsigned int *)p, (unsigned int *)(p + sizeof(unsigned int)), key);\r\n        p += sizeof(unsigned int) * 2;\r\n\r\n        leftSize -= sizeof(unsigned int) * 2;\r\n    }\r\n}<\/pre>\n
 <\/p>\n<\/div>\n<\/div>\n
4.\u5c01\u88c5\u5bf9\u52a0\u5bc6\u6570\u636e\u8fdb\u884c\u89e3\u5bc6\u51fd\u6570<\/p>\n
\/\/buffer\uff1a\u8f93\u5165\u7684\u5f85\u89e3\u5bc6\u6570\u636ebuffer\uff0c\u5728\u51fd\u6570\u4e2d\u76f4\u63a5\u5bf9\u5143\u6570\u636ebuffer\u8fdb\u884c\u89e3\u5bc6\uff1bsize\uff1abuffer\u957f\u5ea6\uff1bkey\u662f\u5bc6\u94a5\uff1b\r\nvoid DecryptBuffer(char* buffer, int size, unsigned int* key)\r\n{\r\n    char *p = buffer;\r\n\r\n    int leftSize = size;\r\n\r\n    while (p < buffer + size &&\r\n        leftSize >= sizeof(unsigned int) * 2)\r\n    {\r\n        DecryptTEA((unsigned int *)p, (unsigned int *)(p + sizeof(unsigned int)), key);\r\n        p += sizeof(unsigned int) * 2;\r\n\r\n        leftSize -= sizeof(unsigned int) * 2;\r\n    }\r\n}<\/pre>\n
\n
<\/pre>\n
<\/div>\n<\/div>\n
5.\u6d4b\u8bd5\u52a0\u5bc6\/\u89e3\u5bc6\u6587\u4ef6\u4f8b\u5b50(windows\u4e0b)<\/p>\n
\/\/-----\u8bbe\u7f6e\u5bc6\u94a5\uff0c\u5fc5\u987b\u9700\u898116\u4e2a\u5b57\u7b26\u6216\u4ee5\u4e0a\uff08\u8fd9\u91cc\u7684\u957f\u5ea6\u9519\u8bef\u7531\u8bc4\u8bba#3\u697clegion\u63d0\u51fa\u4fee\u6b63\uff0c\u8868\u793a\u611f\u8c22\u3002\uff09\r\nunsigned int *key = (unsigned int *)\"testkey123456789\";\r\n\/\/-----\u8bfb\u53d6\u6587\u4ef6\r\nunsigned int pSize = 0;\r\nchar * pBuffer = NULL;\r\nFILE *fp;\r\nint err = fopen_s(&fp, sFileName, \"rb\"); \/\/sFileName\u662f\u8bfb\u53d6\u7684\u52a0\u5bc6\/\u89e3\u5bc6\u6587\u4ef6\u540d TODO:\u5904\u7406\u9519\u8bef\r\nfseek(fp, 0, SEEK_END);\r\npSize = ftell(fp); \/\/\u5f97\u5230\u957f\u5ea6\r\nfseek(fp, 0, SEEK_SET);\r\npBuffer = new char[pSize]; \/\/\u5f00\u8f9f\u5185\u5b58\u7a7a\u95f4\r\npSize = fread(pBuffer, sizeof(char), pSize, fp); \/\/\u8bfb\u53d6\u5185\u5bb9\r\nfclose(fp); \/\/\u5173\u95ed\u6587\u4ef6\r\n\r\n\/\/-----\u5bf9\u539f\u59cb\u6587\u4ef6\u8fdb\u884c\u52a0\u5bc6\r\nEncryptBuffer(pBuffer, pSize, key);\r\n\r\n\/\/\u5982\u679c\u662f\u5df2\u7ecf\u52a0\u5bc6\u8fc7\u7684\u6587\u4ef6\uff0c\u5219\u5bf9\u5e94\u4e3a\u89e3\u5bc6\u51fd\u6570\r\n\/\/DecryptBuffer(pBuffer, pSize, key);\r\n\r\n\/\/-----\u5c06\u6570\u636e\u5199\u5165\u6587\u4ef6\u5f53\u4e2d\r\nFILE *fDestFile;\r\nfopen_s(&fDestFile, sTagetFileName, \"wb\"); \/\/sTagetFileName\u662f\u5199\u5165\u7684\u52a0\u5bc6\/\u89e3\u5bc6\u6587\u4ef6\u540d\r\nfwrite(pBuffer, sizeof(char), pSize, fDestFile);\r\nfclose(fDestFile);\/\/\u5173\u95ed\u6587\u4ef6\r\n\r\ndelete[]pBuffer;<\/pre>\n
PS:<\/p>\n
1.\u5bf9\u4e8ecocos2d\u6765\u8bf4\uff0c\u4f7f\u7528pvr\u6216\u8005pvr.ccz\u7b49\u65b9\u5f0f\u4e5f\u662f\u80fd\u52a0\u5bc6\u7684\uff0c\u4f46\u662f\u5728\u5f15\u64ce\u5185\u90e8\u8fdb\u884c\u89e3\u5bc6\u7684\u65f6\u5019\u9700\u8981\u5f00\u8f9f\u4e00\u5757\u5185\u5b58\u7a7a\u95f4\u8fdb\u884c\u89e3\u5bc6\uff0c\u4f1a\u63d0\u9ad8\u6e38\u620f\u5bf9\u5185\u5b58\u7684\u9700\u6c42\u3002\u6240\u4ee5\uff0c\u76f4\u63a5\u5bf9\u8bfb\u5165\u5185\u5b58\u4e2d\u7684\u6587\u4ef6\u7f13\u5b58\u8fdb\u884c\u89e3\u5bc6\u53ef\u4ee5\u907f\u514d\u8fd9\u79cd\u60c5\u51b5\u7684\u53d1\u751f\u3002<\/p>\n
2.\u5728cocos2d-x-3.10\\cocos\\base\u91cc\u7684base64.h &\u00a0base64.cpp\u6587\u4ef6\u91cc\uff0c\u5b9e\u73b0\u4e86base64\u7684\u52a0\u89e3base64Encode\/\u89e3\u5bc6base64Decode\u65b9\u6cd5\u3002<\/p>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"
\u5728\u6e38\u620f\u9879\u76ee\u4e2d\uff0c\u4e00\u822c\u9700\u8981\u5bf9\u8d44\u6e90\u6216\u6570\u636e\u8fdb\u884c\u52a0<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"colormag_page_container_layout":"default_layout","colormag_page_sidebar_layout":"default_layout","footnotes":""},"categories":[24],"tags":[121],"class_list":["post-1751","post","type-post","status-publish","format-standard","hentry","category-value_docs","tag-05-"],"_links":{"self":[{"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/posts\/1751","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/comments?post=1751"}],"version-history":[{"count":0,"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/posts\/1751\/revisions"}],"wp:attachment":[{"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/media?parent=1751"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/categories?post=1751"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/tags?post=1751"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}