핵커의 프로그래밍 세상

<stdio.h>#include <Windows.h>#include <conio.h> //로컬디스크 D 에 ID 라는 파일을 생성해주세요 (대문자)#include <string.h> //프로젝트 - 속성 - c/c++ - 전처리기 ;_CRT_SECURE_NO_WARNINGS 를 추가#include <stdlib.h>#include <ctype.h>

void menu(int*); //로그인프로그램메뉴void login(char*, char*); //로그인void singup(char*, char*); //회원가입

int main(void){ int cho; //선택화면에서 선택값을 저장하는곳 char loginid[15]; //로그인에서 아이디를 저장하는곳 char loginpassword[15]; //로그인에서 비밀번호를 저장하는곳 char singupid[15]; //회원가입에서 아이디를 저장하는곳 char singuppassword[15]; //회원가입에서 비밀번호를 저장하는곳

menu(&cho);

switch (cho) { case 1: login(loginid, loginpassword); break; case 2: singup(singupid, singuppassword); break; default: printf("잘못입력하셨습니다."); main(); break; }}

void menu(int *cho) //메인화면{ printf_s("제작자 : staff2303@gmail.com \n"); printf_s("==============================================. \n"); printf_s("1.login \n"); printf_s("2.sing up \n"); printf_s("주의! 문자입력시오류! (수정중)\n"); scanf_s("%d", cho); system("cls");

}

void login(char *loginid, char *loginpassword) //로그인화면

{ FILE *rfp; char file[50]; char loginpassword2[15]; int amo; printf_s("login. \n"); printf_s("==========================================. \n"); printf_s("  I  D   : "); scanf_s("%s", loginid, 15); sprintf_s(file, "D:\\ID\\%s.txt", loginid); // 아이디와 똑같은 파일을 오픈 fopen_s(&rfp, file, "r"); // 파일이없어서열수없을경우 rfp에는 NULL이들어온다. 

if (rfp == NULL) { system("cls"); printf_s("아이디가없습니다. \n"); printf_s("==========================================. \n"); system("Pause"); system("cls"); main(); }

printf_s("PASSWORD : "); scanf_s("%s", loginpassword, 15); printf("암 호 키 : "); scanf_s("%d", &amo); FILE* fp = fopen(file, "r");   //파일오픈 fgets(loginpassword2, 15, fp); //메모장에서 password를  password2로 저장 fclose(fp); for (int i = 0; loginpassword2[i] != '\0'; i++) //password 복호화 { if (isalpha(loginpassword[i])) { if (loginpassword2[i] - amo < 'a') { int plus = 'a' + amo - 1 - loginpassword2[i]; loginpassword2[i] = 'z'; loginpassword2[i] -= plus; } else loginpassword2[i] -= amo; } else { if (loginpassword2[i] - amo < '0') { int plus = '0' + amo - 1 - loginpassword2[i]; loginpassword2[i] = '9'; loginpassword2[i] -= plus; } else loginpassword2[i] -= amo; } }

if (strcmp(loginpassword, loginpassword2) == 0) // 입력한 password와 복호화된 password를 비교 { printf_s("\n로그인완료\n"); system("Pause"); system("cls"); exit(1); } else { system("cls"); printf_s("비밀번호 혹은 암호키가 틀립니다.\n"); system("Pause"); system("cls"); main(); }}

void singup(char *singupid, char *singuppassword)

{ FILE *fp; char file[50]; int amo; printf_s("sing up. \n"); printf_s("==========================================. \n"); printf_s("아이디를입력하시오(15자이내). \n"); scanf_s("%s", singupid, 15); sprintf(file, "D:\\ID\\%s.txt", singupid); // 폴더의 이름과 경로를 file 에 저장 (아이디 = 폴더의 이름) fp = fopen(file, "w+"); fclose(fp); Sleep(1000); system("cls");

printf_s("sing up. \n"); printf_s("==========================================. \n"); printf_s("비밀번호를입력하세요(영문, 숫자 15자이내).\n"); scanf_s("%s", singuppassword, 15); printf_s("암호키를 입력하세요(1~5) \n"); scanf_s("%d", &amo);

for (int i = 0; singuppassword[i] != '\0'; i++) //password 암호화 { if (isalpha(singuppassword[i])) { if (singuppassword[i] + amo > 'z')

{ int less = singuppassword[i] - 'z';

singuppassword[i] = 'a' + amo - 1; singuppassword[i] += less; } else singuppassword[i] += amo; } else { if (singuppassword[i] + amo > '9')

{ int less = singuppassword[i] - '9';

singuppassword[i] = '0' + amo - 1; singuppassword[i] += less; } else singuppassword[i] += amo; } } fp = fopen(file, "w+"); fprintf(fp, "%s", singuppassword); fclose(fp); Sleep(1000); system("cls"); //완료창  printf_s("회원가입완료. \n"); printf_s("==========================================. \n"); Sleep(1000); system("cls"); main();}

#include "bigint\BigIntegerLibrary.hh" #include <afx.h> #include <iostream> #include <string.h> #import "winhttp.tlb" no_namespace named_guids char* wc2ansi(CStringW& unicodestr) { char *ansistr; int lenW = wcslen(unicodestr.GetString()); int lenA = WideCharToMultiByte(CP_ACP, 0, unicodestr, lenW, 0, 0, NULL, NULL); if (lenA > 0) { ansistr = new char[lenA + 1]; WideCharToMultiByte(CP_ACP, 0, unicodestr, lenW, ansistr, lenA, NULL, NULL); ansistr[lenA] = 0; } return ansistr; } VOID ansi2wc(char* ansistr, CStringW& Result) { int lenA = lstrlenA(ansistr); int lenW; BSTR unicodestr; lenW = ::MultiByteToWideChar(CP_ACP, 0, ansistr, lenA, 0, 0); if (lenW > 0) { // Check whether conversion was successful unicodestr = ::SysAllocStringLen(0, lenW); ::MultiByteToWideChar(CP_ACP, 0, ansistr, lenA, unicodestr, lenW); } Result = CStringW(unicodestr); return; } VOID SplitKey(CStringW& szSource, CStringW* KeyArr) { DWORD dwPos = 0, dwNextPos = 0, i = 0; dwNextPos = szSource.Find(L",", 0); // Mid의 시작 지점은 0임 do { KeyArr[i++].SetString(szSource.Mid(dwPos, dwNextPos - dwPos)); dwPos = dwNextPos + 1; dwNextPos = szSource.Find(L",", dwPos); }while(dwNextPos != -1); KeyArr[i].SetString(szSource.Mid(dwPos)); return; } PBYTE pkcs1pad2(CStringW& OrgText, int dwPadNum) { PBYTE Buffer = (PBYTE)malloc(dwPadNum); int padIndex = OrgText.GetLength() - 1; while( padIndex >= 0 ) Buffer[--dwPadNum] = ((PBYTE)OrgText.Mid(padIndex--, 1).GetString())[0]; Buffer[--dwPadNum] = 0; while( dwPadNum > 2) Buffer[--dwPadNum] = rand() % 256 + 1; Buffer[--dwPadNum] = 2; Buffer[--dwPadNum] = 0; return Buffer; } VOID Get16Times(BigInteger& Result, DWORD dwTimes) { Result = BigInteger(1); for(int i = 0; i < dwTimes; i++) { Result = Result * BigInteger(16); } return; } VOID RSAFastEncrypt(BigInteger& orgInt, BigInteger& exp, BigInteger& moduler, BigInteger& Result) { Result = orgInt % moduler; for(int i = 0; i < 16; i++) Result = Result * Result % moduler; Result = Result * orgInt % moduler; } int main() { CStringW szID(L"비밀번호"); CStringW szPW(L"아이디"); HRESULT hr = CoInitialize(0); if(SUCCEEDED(hr)){ IWinHttpRequestPtr IE; IE.CreateInstance(CLSID_WinHttpRequest); IE->Open(_bstr_t(L"GET"), _bstr_t(L"http://nid.naver.com/login/ext/keys.nhn")); IE->Send(); CStringW Buffer((wchar_t*)(IE->ResponseText)); CStringW KeyArr[4]; // 먼저 키를 나눈다 SplitKey(Buffer, KeyArr); // Original Text를 형성한다. CStringW OrgText; OrgText = OrgText + (char)KeyArr[0].GetLength(); OrgText = OrgText + KeyArr[0]; OrgText = OrgText + (char)szID.GetLength(); OrgText = OrgText + szID; OrgText = OrgText + (char)szPW.GetLength(); OrgText = OrgText + szPW; // 문자열을 Byte Array로 변환하고 PBYTE TextByteArr = (PBYTE)pkcs1pad2(OrgText, 128); BigInteger orgInt(0); BigInteger bigTimes; // Byte Array를 BigInteger로 치환한다. for(int i = 127; i >= 0; i--) { Get16Times(bigTimes, (127 - i) * 2); orgInt = orgInt + BigInteger(TextByteArr[i]) * bigTimes; } BigInteger Result(0); BigInteger eValue = stringToBigInteger(wc2ansi(KeyArr[2])); BigInteger nValue = stringToBigInteger(wc2ansi(KeyArr[3])); // 암호화를 진행한다. RSAFastEncrypt(orgInt, nValue, eValue, Result); // 이제 로그인을 진행하자 CStringW HeaderString, Converted; ansi2wc((char*)(bigUnsignedToString(Result.getMagnitude()).c_str()), Converted); HeaderString = HeaderString + "enctp=1"; HeaderString = HeaderString + "&encpw=" + Converted.MakeLower(); HeaderString = HeaderString + "&encnm=" + KeyArr[1]; HeaderString = HeaderString + "&svctype=0"; HeaderString = HeaderString + "&id="; HeaderString = HeaderString + "&pw="; HeaderString = HeaderString + "&x=35"; HeaderString = HeaderString + "&y=14"; IE->Open((_bstr_t)L"POST", (_bstr_t)L"https://nid.naver.com/nidlogin.login"); IE->SetRequestHeader((_bstr_t)L"Referer", (_bstr_t)L"http://static.nid.naver.com/login.nhn?svc=wme&url=http%3A%2F%2Fwww.naver.com&t=20120425"); IE->SetRequestHeader((_bstr_t)L"Content-Type", (_bstr_t)L"application/x-www-form-urlencoded"); IE->Send((_bstr_t)HeaderString); CStringW strResponse = (wchar_t*)IE->GetResponseText(); if( strResponse.Find(L"location.replace") != -1 ) std::cout << "로그인에 성공하였습니다." << std: