{"id":112,"date":"2022-11-19T21:49:12","date_gmt":"2022-11-19T13:49:12","guid":{"rendered":"https:\/\/www.shangwendada.co\/?p=112"},"modified":"2022-11-22T00:06:16","modified_gmt":"2022-11-21T16:06:16","slug":"%e5%bc%b1%e5%8f%a3%e4%bb%a4%e5%ae%89%e5%85%a8%e5%ae%9e%e9%aa%8c%e5%ae%a42022%e6%8b%9b%e6%96%b0%e8%b5%9beasybase","status":"publish","type":"post","link":"https:\/\/blog.shangwendada.top\/index.php\/2022\/11\/19\/%e5%bc%b1%e5%8f%a3%e4%bb%a4%e5%ae%89%e5%85%a8%e5%ae%9e%e9%aa%8c%e5%ae%a42022%e6%8b%9b%e6%96%b0%e8%b5%9beasybase\/","title":{"rendered":"[Reverse]\u5f31\u53e3\u4ee4\u5b89\u51682022\u62db\u65b0\u8d5bEasyBase"},"content":{"rendered":"

\u9898\u76ee\u4e0b\u8f7d\u94fe\u63a5:EasyBase<\/a><\/h2>\n

rot13\u52a0\u5bc6<\/h2>\n

ROT13\uff08\u56de\u8f6c13\u4f4d\uff0crotate by 13 places\uff0c\u6709\u65f6\u4e2d\u95f4\u52a0\u4e86\u4e2a\u8fde\u5b57\u7b26\u79f0\u4f5cROT-13\uff09\u662f\u4e00\u79cd\u7b80\u6613\u7684\u66ff\u6362\u5f0f\u5bc6\u7801\u3002\u5b83\u662f\u4e00\u79cd\u5728\u82f1\u6587\u7f51\u7edc\u8bba\u575b\u7528\u4f5c\u9690\u85cf\u516b\u5366\uff08spoiler\uff09\u3001\u5999\u53e5\u3001\u8c1c\u9898\u89e3\u7b54\u4ee5\u53ca\u67d0\u4e9b\u810f\u8bdd\u7684\u5de5\u5177\uff0c\u76ee\u7684\u662f\u9003\u8fc7\u7248\u4e3b\u6216\u7ba1\u7406\u5458\u7684\u5306\u5306\u4e00\u77a5\u3002ROT13\u88ab\u63cf\u8ff0\u6210\u201c\u6742\u5fd7\u5b57\u8c1c\u4e0a\u4e0b\u98a0\u5012\u89e3\u7b54\u7684Usenet\u70b9\u5bf9\u70b9\u4f53\u201d\u3002ROT13 \u4e5f\u662f\u8fc7\u53bb\u5728\u53e4\u7f57\u9a6c\u5f00\u53d1\u7684\u51ef\u6492\u52a0\u5bc6\u7684\u4e00\u79cd\u53d8\u4f53\u3002<\/p>\n

\u4e24\u4e2a\u8fde\u7eed\u7684ROT13\u5e94\u7528\u51fd\u5f0f\u4f1a\u56de\u590d\u539f\u59cb\u6587\u5b57\uff08\u5728\u6570\u5b66\u4e0a\uff0c\u8fd9\u6709\u65f6\u79f0\u4e4b\u4e3a\u5bf9\u5408\uff08involution\uff09\uff1b\u5728\u5bc6\u7801\u5b66\u4e0a\uff0c\u8fd9\u53eb\u505a\u5bf9\u7b49\u52a0\u5bc6\uff08reciprocalcipher\uff09\uff09\u3002
\n\u8f6c\u6362\u53ef\u4ee5\u5229\u7528\u67e5\u627e\u8868\u5b8c\u6210\uff0c\u5982\u4e0b\u4f8b\u6240\u793a<\/p>\n

\"file\"<\/div><\/p>\n

base64<\/h2>\n

base64.h\u5934\u6587\u4ef6<\/h3>\n
#ifndef _BASE64_H  \n#define _BASE64_H  \n\n#include <stdlib.h>  \n#include <string.h>  \n\nunsigned char *base64_encode(unsigned char *str);  \n\nunsigned char *bae64_decode(unsigned char *code);  \n\n#endif  <\/code><\/pre>\n
base64\u52a0\u5bc6\u89e3\u5bc6<\/h3>\n
#include<iostream>\n#include<cstring>\n#include<bitset>\n#include<vector>\n#include<stdlib.h>\n#include<time.h>\n#include<sstream>\n#include<cstring>\n\/*base64.c*\/  \n#include "base64.h"  \nusing namespace std;\n    \/\/base64.c\n#include"base64.h"\nchar base64char[] = {\n        'A','B','C','D','E','F','G','H','I','J',\n        'K','L','M','N','O','P','Q','R','S','T',\n        'U','V','W','X','Y','Z','a','b','c','d',\n        'e','f','g','h','i','j','k','l','m','n',\n        'o','p','q','r','s','t','u','v','w','x',\n        'y','z','0','1','2','3','4','5','6','7',\n        '8','9','+', '\/', '\\0'\n};\n\/*\nchar base64char[] = {\n\n        'K','L','M','N','O','P','Q','R','S','T',\n        'A','B','C','D','E','F','G','H','I','J',\n        'e','f','g','h','i','j','k','l','m','n',\n        'U','V','W','X','Y','Z','a','b','c','d',\n        'o','p','q','r','s','t','u','v','w','x',\n        'y','z','0','1','2','3','4','5','6','7',\n        '8','9','+', '\/', '\\0'\n};\n*\/\nchar c;\n\nvoid Menu()\n{\n    printf("***************\\n");\n    printf("*1\u3001base64\u52a0\u5bc6\\n");\n    printf("*2\u3001base64\u89e3\u5bc6\\n");\n    printf("*3\u3001\u9000\u51fa\u7a0b\u5e8f\\n");\n    printf("***************\\n");\n}\n\nchar* base64_encode(char* binData, char* base64, int binLength)\n{\n    int i = 0;\n    int j = 0;\n    int current = 0;\n    for (i = 0; i < binLength; i += 3) {\n        \/\/\u83b7\u53d6\u7b2c\u4e00\u4e2a6\u4f4d\n        current = (*(binData + i) >> 2) & 0x3F;\n        *(base64 + j++) = base64char[current];\n        \/\/\u83b7\u53d6\u7b2c\u4e8c\u4e2a6\u4f4d\u7684\u524d\u4e24\u4f4d\n        current = (*(binData + i) << 4) & 0x30;\n        \/\/\u5982\u679c\u53ea\u6709\u4e00\u4e2a\u5b57\u7b26\uff0c\u90a3\u4e48\u9700\u8981\u505a\u7279\u6b8a\u5904\u7406\n        if (binLength <= (i + 1)) {\n            *(base64 + j++) = base64char[current];\n            *(base64 + j++) = '=';\n            *(base64 + j++) = '=';\n            break;\n        }\n        \/\/\u83b7\u53d6\u7b2c\u4e8c\u4e2a6\u4f4d\u7684\u540e\u56db\u4f4d\n        current |= (*(binData + i + 1) >> 4) & 0xf;\n        *(base64 + j++) = base64char[current];\n        \/\/\u83b7\u53d6\u7b2c\u4e09\u4e2a6\u4f4d\u7684\u524d\u56db\u4f4d\n        current = (*(binData + i + 1) << 2) & 0x3c;\n        if (binLength <= (i + 2)) {\n            *(base64 + j++) = base64char[current];\n            *(base64 + j++) = '=';\n            break;\n        }\n        \/\/\u83b7\u53d6\u7b2c\u4e09\u4e2a6\u4f4d\u7684\u540e\u4e24\u4f4d\n        current |= (*(binData + i + 2) >> 6) & 0x03;\n        *(base64 + j++) = base64char[current];\n        \/\/\u83b7\u53d6\u7b2c\u56db\u4e2a6\u4f4d\n        current = *(binData + i + 2) & 0x3F;\n        *(base64 + j++) = base64char[current];\n    }\n    *(base64 + j) = '\\0';\n    return base64;\n}\n\nchar* base64_decode(char const* base64Str, char* debase64Str, int encodeStrLen)\n{\n    int i = 0;\n    int j = 0;\n    int k = 0;\n    char temp[4] = "";\n\n    for (i = 0; i < encodeStrLen; i += 4) {\n        for (j = 0; j < 64; j++) {\n            if (*(base64Str + i) == base64char[j]) {\n                temp[0] = j;\n            }\n        }\n\n        for (j = 0; j < 64; j++) {\n            if (*(base64Str + i + 1) == base64char[j]) {\n                temp[1] = j;\n            }\n        }\n\n        for (j = 0; j < 64; j++) {\n            if (*(base64Str + i + 2) == base64char[j]) {\n                temp[2] = j;\n            }\n        }\n\n        for (j = 0; j < 64; j++) {\n            if (*(base64Str + i + 3) == base64char[j]) {\n                temp[3] = j;\n            }\n        }\n\n        *(debase64Str + k++) = ((temp[0] << 2) & 0xFC) | ((temp[1] >> 4) & 0x03);\n        if (*(base64Str + i + 2) == '=')\n            break;\n\n        *(debase64Str + k++) = ((temp[1] << 4) & 0xF0) | ((temp[2] >> 2) & 0x0F);\n        if (*(base64Str + i + 3) == '=')\n            break;\n\n        *(debase64Str + k++) = ((temp[2] << 6) & 0xF0) | (temp[3] & 0x3F);\n    }\n    return debase64Str;\n}\n\nint main()\n{\n\n    char ad[]="123456789";\n    char add[256];\n    base64_encode(ad,add,strlen(ad));\n    cout<<add<<endl;\n    \/*\n    for(int i = 0 ; i < strlen(base64char);i++)\n    {\n        printf("%c",base64char[i]);\n    }\n    *\/\n}<\/code><\/pre>\n
strrev\u51fd\u6570<\/h2>\n
\u6982\u5ff5\uff1a<\/h3>\n
strrev()\u51fd\u6570\u5c06\u5b57\u7b26\u4e32\u9006\u7f6e\uff0c\u5176\u539f\u578b\u4e3a\uff1achar strrev(char <\/em>str);<\/p>\n
\u53c2\u6570\uff1a<\/h3>\n
str\u4e3a\u8981\u9006\u7f6e\u7684\u5b57\u7b26\u4e32\u3002strrev()\u5c06str\u6240\u6307\u7684\u5b57\u7b26\u4e32\u9006\u7f6e\u3002<\/p>\n
\u8fd4\u56de\u503c\uff1a<\/h3>\n
\u8fd4\u56de\u6307\u5411\u9006\u7f6e\u540e\u7684\u5b57\u7b26\u4e32\u7684\u6307\u9488\u3002\u4e5f\u5c31\u662f\u9006\u5e8f\u540e\u7684\u7ed3\u679c\u8981\u7528\u5b57\u7b26\u4e32\u6307\u9488\u7c7b\u578b\u63a5\u6536\u3002<\/p>\n
\u6ce8\u610f\uff1a<\/h3>\n
strrev()\u4e0d\u4f1a\u751f\u6210\u65b0\u5b57\u7b26\u4e32\uff0c\u800c\u662f\u4fee\u6539\u539f\u6709\u5b57\u7b26\u4e32\u3002\u56e0\u6b64\u5b83\u53ea\u80fd\u9006\u7f6e\u5b57\u7b26\u6570\u7ec4\uff0c\u800c\u4e0d\u80fd\u9006\u7f6e\u5b57\u7b26\u4e32\u6307\u9488\u6307\u5411\u7684\u5b57\u7b26\u4e32\uff0c\u56e0\u4e3a\u5b57\u7b26\u4e32\u6307\u9488\u6307\u5411\u7684\u662f\u5b57\u7b26\u4e32\u5e38\u91cf\uff0c\u5e38\u91cf\u4e0d\u80fd\u88ab\u4fee\u6539\u3002<\/p>\n
\u5b9e\u73b0<\/h3>\n
void strrev(char *s)\n{\n    if(NULL == s)\n        return;\n\n    char *pBegin = s;\n    char *pEnd   = s + strlen(s) - 1;\n\n    char pTemp;\n\n    while(pBegin < pEnd)\n    {\n        pTemp   = *pBegin;\n        *pBegin = *pEnd;\n        *pEnd   = pTemp;\n\n        ++ pBegin, -- pEnd;\n    }\n}<\/code><\/pre>\n
\u9898\u89e3<\/h2>\n
\u524d\u671f\u5206\u6790<\/h3>\n
\"file\"<\/div>
\n\u8bf4\u5b9e\u8bdd\u4e00\u8fdb\u6765\u770b\u5230\u4e00\u957f\u4e32\u7684\u4ee3\u7801\uff0c\u6211\u5f53\u65f6\u5c31\u614c\u4e86\uff0c\u8fd8\u6709\u8fd9\u4e2a\u964d\u9f99\u5341\u516b\u638c\u662f\u4ec0\u4e48\u9b3c\uff0c\u5c31\u662f\u975e\u5e38\u7684\u79bb\u8c31\uff0c\u7136\u540e\u6211\u4eec\u5f80\u4e0b\u7ffb\u53ef\u4ee5\u8fd4\u73b0\u4e00\u884c\u5012\u7f6e\u7684base64;
\n
\"file\"<\/div>
\n\u770b\u5230\u5012\u7f6e\u7684base64\u4e4b\u540e\u5148\u5c1d\u8bd5\u628a\u4ed6\u5012\u8fc7\u6765\u89e3\u5bc6
\n\u5012\u7f6e\u7b97\u6cd5<\/p>\n
char a[]="=DzMuO8MmgaomuGA9Rmpj5lAkAwZgxQplNGYhOwAi6lAmywZlqGZ7LQB7pGs";\n    for(int i = 0; i < strlen(a); i ++ )\n    {\n        cout<<a[i];\n        st.push(a[i]);\n    }\n    cout<<endl;\n    int cd =0;\n    while(!st.empty())\n    {\n        cout<<st.top();\n        a[cd++]=st.top();\n        st.pop();\n    }<\/code><\/pre>\n
\u5012\u7f6e\u4e4b\u540e\u62ff\u5230
\nsGp7BQL7ZGqlZwymAl6iAwOhYGNlpQxgZwAkAl5jpmR9AGumoagmM8OuMzD=<\/code>
\n\u62ff\u53bbbase64\u89e3\u5bc6\u53d1\u73b0\u6839\u672c\u65e0\u6cd5\u89e3\u5bc6\u6b64\u523b\u6211\u4eec\u5c31\u5e94\u8be5\u60f3\u5230\u662f\u4e0d\u662f\u6709\u4ec0\u4e48\u5730\u65b9\u51fa\u4e86\u95ee\u9898\uff0c\u7531\u4e8ebase64\u65e0\u6cd5\u89e3\u5bc6\uff0c\u80af\u5b9a\u662fbase\u7684\u5b57\u7b26\u4e32\u88ab\u5904\u7406\u8fc7\u3002<\/p>\n
\u89e3\u9898\u8fc7\u7a0b<\/h3>\n
\u4e3a\u4e86\u786e\u5b9a\u7a0b\u5e8f\u7a76\u7adf\u662f\u5982\u4f55\u52a0\u5bc6\u7684\uff0c\u52a8\u6001\u8c03\u8bd5\u662f\u5fc5\u4e0d\u53ef\u5c11\u7684\u6b65\u9aa4\uff0c\u65b9\u4fbf\u6211\u4eec\u52a8\u6001\u5206\u6790\u7a0b\u5e8f\uff0c\u9996\u5148\u6211\u4eec\u5728\u7a0b\u5e8f\u5934\u4e0b\u65ad\u70b9\u7136\u540e\u968f\u4fbf\u8f93\u5165\u4e00\u4e32\u6570\u636e\u4f8b\u5982abcdefg\uff0c\u7136\u540e\u518d\u8ddf\u8e2a\u8fd9\u4e2a\u5b57\u7b26\u4e32\u3002
\n\u5176\u4e2d\u6211\u4eec\u4f1a\u5728\u9898\u76ee\u4e2d\u53d1\u73b0\u4e09\u5904\u663e\u8457\u52a0\u5bc6\uff1a
\nRot13<\/strong>
\n
\"file\"<\/div>
\nBase64<\/strong>
\n
\"file\"<\/div>
\nRot13<\/strong>
\n
\"file\"<\/div>
\n\u90a3\u4e48\u53ef\u4ee5\u53d1\u73b0\u6211\u4eec\u53ef\u4ee5\u770b\u89c1\u7684\u5bc6\u6587\u7ecf\u5386\u4e86Rot->Base64->Rot\u7684\u52a0\u5bc6\u8fc7\u7a0b\u7136\u540e\u5176\u4e2d\u8fd8\u88ab\u8fdb\u884c\u4e86\u5012\u5e8f,\u90a3\u4e48\u6211\u4eec\u5f00\u59cb\u6784\u9020\u89e3\u5bc6\u811a\u672c
\n[\u6ce8\u610f]<\/strong>
\n\u5728\u672c\u9898\u4e2d\u5bf9\u5b57\u7b26\u4e32\u52a0\u5bc6\u7684\u540c\u65f6\u5728\u4ee3\u7801\u7684154\uff0c204\u884c\u5206\u522b\u51fa\u73b0\u4e86
\n
\"file\"<\/div>
\n\u4e5f\u5c31\u662f\u5728\u89e3\u5bc6\u7684\u540c\u65f6\u6211\u4eec\u9700\u8981\u6ce8\u610f\u4e24\u6b21\u5b57\u7b26\u4e32\u53cd\u8f6c!
\nbase64decode:<\/p>\n
#include<base64.h>\nchar* base64_decode(char const* base64Str, char* debase64Str, int encodeStrLen)\n{\n    int i = 0;\n    int j = 0;\n    int k = 0;\n    char temp[4] = "";\n\n    for (i = 0; i < encodeStrLen; i += 4) {\n        for (j = 0; j < 64; j++) {\n            if (*(base64Str + i) == base64char[j]) {\n                temp[0] = j;\n            }\n        }\n\n        for (j = 0; j < 64; j++) {\n            if (*(base64Str + i + 1) == base64char[j]) {\n                temp[1] = j;\n            }\n        }\n\n        for (j = 0; j < 64; j++) {\n            if (*(base64Str + i + 2) == base64char[j]) {\n                temp[2] = j;\n            }\n        }\n\n        for (j = 0; j < 64; j++) {\n            if (*(base64Str + i + 3) == base64char[j]) {\n                temp[3] = j;\n            }\n        }\n\n        *(debase64Str + k++) = ((temp[0] << 2) & 0xFC) | ((temp[1] >> 4) & 0x03);\n        if (*(base64Str + i + 2) == '=')\n            break;\n\n        *(debase64Str + k++) = ((temp[1] << 4) & 0xF0) | ((temp[2] >> 2) & 0x0F);\n        if (*(base64Str + i + 3) == '=')\n            break;\n\n        *(debase64Str + k++) = ((temp[2] << 6) & 0xF0) | (temp[3] & 0x3F);\n    }\n    return debase64Str;\n}<\/code><\/pre>\n
Rotdecode:<\/strong>
\n\u8fd9\u91cc\u6211\u4eec\u8fdb\u5165Rot13\u52a0\u5bc6\u7684\u51fd\u6570\u53ef\u4ee5\u770b\u89c1\u8fd9\u4e09\u6bb5\u8bed\u53e5
\n
\"file\"<\/div>
\n
\"file\"<\/div>
\n
\"file\"<\/div>
\n\u6211\u4eec\u53d1\u73b0\u4ed6\u4e0e\u4f20\u7edf\u7684rot13\u4e0d\u76f8\u540c\uff0c\u4ed6\u5bf9\u6570\u5b57\u4e5f\u8fdb\u884c\u4e86\u52a0\u5bc6\u56e0\u6b64\u6211\u4eec\u9700\u8981\u6784\u9020\u4e00\u4e2a\u65b0\u7684\u89e3\u5bc6\u811a\u672c:<\/p>\n
void decode(char a[])\n{\n    for(int i = 0 ; i < strlen(a); i ++ )\n    {\n        if(a[i]>='0'&&a[i]<='9')\n        {\n            a[i]=(a[i]-48+10-5)%10+48;\n        }\n        else if(a[i]>='a'&&a[i]<='z')\n        {\n            a[i]=(a[i]-97+26-13)%26+97;\n        }\n        else if(a[i]>='A'&&a[i]<='Z')\n        {\n            a[i]=(a[i]-65+26-13)%26+65;\n        }\n    }\n}<\/code><\/pre>\n
\u90a3\u4e48\u4e3b\u51fd\u6570\u5982\u4e0b:<\/strong><\/p>\n
\u5c06base\u5bc6\u7801\u53cd\u5411<\/strong><\/p>\n
char a[]="=DzMuO8MmgaomuGA9Rmpj5lAkAwZgxQplNGYhOwAi6lAmywZlqGZ7LQB7pGs";\n    for(int i = 0; i < strlen(a); i ++ )\n    {\n        st.push(a[i]);\n    }\n    cout<<endl;\n    int cd =0;\n    while(!st.empty())\n    {\n        cout<<st.top();\n        a[cd++]=st.top();\n        st.pop();\n    }<\/code><\/pre>\n
\u8f93\u51fa\u4e3a:
\nsGp7BQL7ZGqlZwymAl6iAwOhYGNlpQxgZwAkAl5jpmR9AGumoagmM8OuMzD=<\/code>
\n\u7136\u540e\u8c03\u7528rotdecode<\/strong><\/p>\n
    decode(a);<\/code><\/pre>\n
fTc2ODY2MTdyMjlzNy1vNjBuLTAycDktMjNxNy0wczE4NThzbntzZ3BhZmQ=<\/code>
\nbase64\u89e3\u5bc6<\/strong>
\n}7686617r29s7-o60n-02p9-23q7-0s1858sn{sgpafd<\/code>
\n\u6b64\u65f6\u53d1\u73b0flag\u6a21\u6837\u5df2\u7ecf\u6709\u4e86\uff0c\u6211\u4eec\u9700\u8981\u4f46\u662f\u4f3c\u4e4e\u662f\u53cd\u7684\uff0c\u6211\u4eec\u9700\u8981\u5c06\u5176\u53cd\u5411,\u518drot13\u5f97\u5230
\nqsnctf{af3036f5-2d87-4c75-a51b-2f47e2611312}<\/code><\/p>\n
exp<\/h3>\n
#include<iostream>\n#include<stack>\n#include<cstring>\n#include<string>\nusing namespace std;\nstack<char> st;\n#include "base64.h"  \nusing namespace std;\n    \/\/base64.c\n#include"base64.h"\nchar base64char[] = {\n        'A','B','C','D','E','F','G','H','I','J',\n        'K','L','M','N','O','P','Q','R','S','T',\n        'U','V','W','X','Y','Z','a','b','c','d',\n        'e','f','g','h','i','j','k','l','m','n',\n        'o','p','q','r','s','t','u','v','w','x',\n        'y','z','0','1','2','3','4','5','6','7',\n        '8','9','+', '\/', '\\0'\n};\nchar c;\nchar* base64_decode(char const* base64Str, char* debase64Str, int encodeStrLen)\n{\n    int i = 0;\n    int j = 0;\n    int k = 0;\n    char temp[4] = "";\n\n    for (i = 0; i < encodeStrLen; i += 4) {\n        for (j = 0; j < 64; j++) {\n            if (*(base64Str + i) == base64char[j]) {\n                temp[0] = j;\n            }\n        }\n\n        for (j = 0; j < 64; j++) {\n            if (*(base64Str + i + 1) == base64char[j]) {\n                temp[1] = j;\n            }\n        }\n\n        for (j = 0; j < 64; j++) {\n            if (*(base64Str + i + 2) == base64char[j]) {\n                temp[2] = j;\n            }\n        }\n\n        for (j = 0; j < 64; j++) {\n            if (*(base64Str + i + 3) == base64char[j]) {\n                temp[3] = j;\n            }\n        }\n\n        *(debase64Str + k++) = ((temp[0] << 2) & 0xFC) | ((temp[1] >> 4) & 0x03);\n        if (*(base64Str + i + 2) == '=')\n            break;\n\n        *(debase64Str + k++) = ((temp[1] << 4) & 0xF0) | ((temp[2] >> 2) & 0x0F);\n        if (*(base64Str + i + 3) == '=')\n            break;\n\n        *(debase64Str + k++) = ((temp[2] << 6) & 0xF0) | (temp[3] & 0x3F);\n    }\n    return debase64Str;\n}\nvoid decode(char a[])\n{\n    for(int i = 0 ; i < strlen(a); i ++ )\/\/\u6570\u5b57\u89e3\u5bc6\n    {\n        if(a[i]>='0'&&a[i]<='9')\n        {\n            a[i]=(a[i]-48+10-5)%10+48;\n        }\n        else if(a[i]>='a'&&a[i]<='z')\n        {\n            a[i]=(a[i]-97+26-13)%26+97;\n        }\n        else if(a[i]>='A'&&a[i]<='Z')\n        {\n            a[i]=(a[i]-65+26-13)%26+65;\n        }\n    }\n}\nint main()\n{\n    char a[]="=DzMuO8MmgaomuGA9Rmpj5lAkAwZgxQplNGYhOwAi6lAmywZlqGZ7LQB7pGs";\n    decode(a);\n    for(int i = 0; i < strlen(a); i ++ )\n    {\n        st.push(a[i]);\n    }\n    cout<<endl;\n    int cd =0;\n    while(!st.empty())\n    {\n        cout<<st.top();\n        a[cd++]=st.top();\n        st.pop();\n    }\n    cout<<endl;   \n    char key[256];\n    base64_decode(a,key,strlen(a));\n    for(int i = 0 ; i< strlen(key); i ++ )\n    {\n        cout<<key[i];\n    }\n    cout<<endl;\n\n    for(int i = 0; i < strlen(key); i ++ )\n    {\n        st.push(key[i]);\n    }\n    cout<<endl;\n    cd =0;\n    while(!st.empty())\n    {\n        cout<<st.top();\n        key[cd++]=st.top();\n        st.pop();\n    }\n    decode(key);\n    cout<<endl;\n    cout<<key;\n}<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"
\u9898\u76ee\u4e0b\u8f7d\u94fe\u63a5:EasyBase rot13\u52a0\u5bc6 ROT13\uff08\u56de\u8f6c13\u4f4d\uff0crotate by 13 places […]<\/p>\n","protected":false},"author":1,"featured_media":156,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-112","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/blog.shangwendada.top\/index.php\/wp-json\/wp\/v2\/posts\/112","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blog.shangwendada.top\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.shangwendada.top\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.shangwendada.top\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.shangwendada.top\/index.php\/wp-json\/wp\/v2\/comments?post=112"}],"version-history":[{"count":15,"href":"https:\/\/blog.shangwendada.top\/index.php\/wp-json\/wp\/v2\/posts\/112\/revisions"}],"predecessor-version":[{"id":178,"href":"https:\/\/blog.shangwendada.top\/index.php\/wp-json\/wp\/v2\/posts\/112\/revisions\/178"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/blog.shangwendada.top\/index.php\/wp-json\/wp\/v2\/media\/156"}],"wp:attachment":[{"href":"https:\/\/blog.shangwendada.top\/index.php\/wp-json\/wp\/v2\/media?parent=112"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.shangwendada.top\/index.php\/wp-json\/wp\/v2\/categories?post=112"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.shangwendada.top\/index.php\/wp-json\/wp\/v2\/tags?post=112"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}