本项目主要是使用C++制作的一个简单的登录系统，实现了本地登录信息的管理以及一些基本功能.zip

#include "CLASS.h" #include<string> #include<iostream> #include<fstream> #include<windows.h> #include<tuple> using namespace std; // password encryption string passwordEncryption(string password){ unsigned long long Out = 0, key = 131, Mul = 1; for(int temp = 0 ; temp < password.size() ; temp++, Mul *= key) Out += password[temp] * Mul; string FIN = to_string(Out); return FIN; } // account keys char key1[27] = "QASWZXDECVFRBNGTHYJUMKIOLP"; char key2[27] = "plijkomnhutybvfgcxerdwsqza"; char key3[11] = "7563890412"; //Encryption account string accountEncryption(string put){ int one = 90, two = 33, there = 62; string FIN; for(char temp : put){ if(temp >= 'A' && temp <= 'Z') FIN += char(one + key1[temp - 'A'] - 'A'); else if(temp >= 'a' && temp <= 'z') FIN += char(two + key2[temp - 'a'] - 'a'); else{ FIN += char(there + key3[temp - '0'] - '0'); } } return FIN; } //Decode account string accountDecode(string put){ auto Find = [](char* key, int Length, char findChar){ for(int temp = 0 ; temp < Length ; temp++){ if(*(key + temp) == findChar) return temp; } return -1; }; int one = 90, two = 33, there = 62; string FIN; for(char temp : put){ char ch = temp; if(temp >= 90 && temp <= 116) FIN += char('A' + Find(key1, 26, char(ch + 'A' - one))); else if(temp >= 33 && temp <= 59) FIN += char('a' + Find(key2, 26, char(ch + 'a' - two))); else FIN += char('0' + Find(key3, 10, char(ch + '0' - there))); } return FIN; } // query the path of the running .exe string currentPath(){ char buffer[512] = {0}; GetCurrentDirectory(sizeof(buffer), buffer); string Road = buffer; return Road; } // Check if the file exist void GetPath::queryPath(){ string Road = currentPath(); Road += "\\logInfo"; ofstream ff; ff.open(Road, ios::in); if(ff.is_open()){ ff.close(); }else{ ofstream new_ff(Road.c_str()); new_ff << "0*\"(6 0*\"(6 0*\"(6 2099018719509\n"; //Init Admin account : admin : 123456 new_ff.close(); } PATH = Road; } // Edit Content bool EditContent::Action(){ // type : 1-Check exist 2-Delete 3-Change 4-export // info content : 1- ID+password 2- ID 3-ID+index+content 4-none //Function below is to divide content into three parts auto Fun = [](string put){ vector<string> info; int index = 0; while(info.size() != 4){ string Use; while(index < put.size() && put[index] != ' '){ Use += put[index]; index++; } info.push_back(Use); index++; } return info; }; ifstream ff; ff.open(PATH, ios::in); //ch is to save read content, Content is to save new content, Origin is to save final info; string ch, Content, Origin; if(ff.is_open()){ int flag = 0; //Check ID if exist string Change; while(getline(ff, ch)){ vector<string> fin = Fun(ch); if(type == 4){ //decode the content Origin += accountDecode(fin[0]) + "\t\t"; Origin += accountDecode(fin[1]) + "\t\t"; Origin += accountDecode(fin[2]) + "\t\t"; Origin += "\n"; continue; } if(fin[0] == info[0]){ flag = 1; if(type == 1){ if(fin[3] == info[1]) return true; else return false; }else if(type == 2) continue; else if(type == 3){ fin[info[1][0] - '0'] = info[2]; for(auto pr : fin) Change += (pr + " "); Change += "\n"; } }else Change += (ch + "\n"); } ff.close(); if(type == 1) return false; // Check if the DATA.txt exist and write the content if(type == 4){ string Road = currentPath(); Road += "./DATA.txt"; ofstream new_ff(Road.c_str()); new_ff << "ID\t\tname\t\tnickname\t\t\n\n"; new_ff << Origin; new_ff.close(); return true; } ofstream ofs; ofs.open(PATH, ofstream::out | ofstream::trunc); ofs.flush(); ofs << Change; ofs.close(); if(flag) return true; else return false; } return false; } LogCheck::LogCheck(string ID, string password) { ID = accountEncryption(ID); password = passwordEncryption(password); queryPath(); info.push_back(ID); info.push_back(password); type = 1; } Creat::Creat(string ID, string name, string nickname, string password){ ID = accountEncryption(ID); name = accountEncryption(name); nickname = accountEncryption(nickname); password = passwordEncryption(password); string put = ID + " " + name + " " + nickname + " " + password + "\n\n"; ofstream ff; ff.open(PATH, ios::app); ff << put; ff.close(); } Change::Change(string ID, int index, string content) { queryPath(); ID = accountEncryption(ID); if(index == 3) content = passwordEncryption(content); else content = accountEncryption(content); info.push_back(ID), info.push_back(to_string(index)), info.push_back(content); type = 3; } Delete::Delete(string ID) { queryPath(); ID = accountEncryption(ID); info.push_back(ID); type = 2; }