C++密码管理器
#include <iostream>
#include <fstream>
#include <vector>
#include <string>
#include <iomanip>
#include <cctype>
#include <algorithm>
#include <map>
using namespace std;
// 数据结构
struct Account {
int id;
string platform;
string username;
string password;
};
// 密码管理器
class PasswordManager {
private:
string masterPassword;
vector<Account> accounts;
const string dataFileName = "";
const string passwordFileName = "";
const int maxAttempts = 3;
// 密码安全性检查
string checkPasswordStrength(const string& password) {
bool hasUpper = false, hasLower = false, hasDigit = false, hasSpecial = false;
for (char ch : password) {
if (isupper(ch)) hasUpper = true;
else if (islower(ch)) hasLower = true;
else if (isdigit(ch)) hasDigit = true;
else hasSpecial = true;
}
int score = (hasUpper ? 1 : 0) + (hasLower ? 1 : 0) + (hasDigit ? 1 : 0) + (hasSpecial ? 1 : 0);
if (score < 2) return "弱";
if (score == 2) return "中";
return "强";
}
// 计算密码破解时间
double calculateCrackTime(const string& password) {
// 假设每秒破解4000000000个密码
double possibilities = 1;
for (char ch : password) {
if (isdigit(ch) || isalpha(ch)) possibilities *= 62; // 数字 + 大小写字母
else possibilities *= 95; // 包含特殊符号
}
return possibilities / 4000000000.0;
}
// 保存管理器密码到文件
void saveMasterPassword() {
ofstream file(passwordFileName);
if (file.is_open()) {
file << masterPassword << endl;
file.close();
}
}
// 从文件加载管理器密码
void loadMasterPassword() {
ifstream file(passwordFileName);
if (file.is_open()) {
getline(file, masterPassword);
file.close();
}
}
// 检查密码是否匹配
bool verifyPassword(const string& password) {
return password == masterPassword;
}
// 保存数据到文件
void saveData() {
ofstream file(dataFileName);
if (file.is_open()) {
for (const auto& acc : accounts) {
file << acc.id << " " << acc.platform << " " << acc.username << " " << acc.password << endl;
}
file.close();
}
}
// 显示所有弱密码
void displayWeakPasswords() {
for (const auto& acc : accounts) {
if (checkPasswordStrength(acc.password) == "弱") {
cout << "ID: " << acc.id << ", 平台: " << acc.platform
<< ", 账号: " << acc.username << ", 密码: " << acc.password << " (弱)" << endl;
}
}
}
// 显示重复的密码
void displayDuplicatePasswords() {
map<string, vector<Account>> platformAccounts;
for (const auto& acc : accounts) {
platformAccounts[acc.platform].push_back(acc);
}
for (const auto& pair : platformAccounts) {
const auto& accList = pair.second;
if (accList.size() > 1) {
cout << "平台: " << pair.first << endl;
for (const auto& acc : accList) {
cout << "ID: " << acc.id << ", 账号: " << acc.username << ", 密码: " << acc.password << endl;
}
cout << "-----------------------------" << endl;
}
}
}
public:
PasswordManager() {
// 检查是否需要创建管理器密码
loadMasterPassword();
if (masterPassword.empty()) {
cout << "首次启动，请设置管理器密码: ";
cin >> masterPassword;
saveMasterPassword();
}
else {
// 校验管理器密码
int attempts = 0;
string password;
while (attempts < maxAttempts) {
cout << "输入管理器密码: ";
cin >> password;
if (verifyPassword(password)) {
break;
} else {
cout << "密码错误！" << endl;
attempts++;
}
}
if (attempts == maxAttempts) {
cout << "尝试次数过多，程序退出。" << endl;
exit(1);
}
}
// 从文件加载数据
ifstream file(dataFileName);
if (file.is_open()) {
string line;
while (getline(file, line)) {
Account acc;
istringstream iss(line);
iss >> acc.id >> acc.platform >> acc.username >> acc.password;
accounts.push_back(acc);
}
file.close();
}
}
// 添加第三方账号密码数据
void addAccount() {
Account acc;
cout << "输入ID: ";
cin >> acc.id;
// 检查ID是否重复
for (const auto& a : accounts) {
if (a.id == acc.id) {
cout << "ID " << acc.id << " 已经存在，请使用其他ID。" << endl;
return;
}
}
cout << "输入平台: ";
cin >> acc.platform;
cout << "输入账号: ";
cin >> acc.username;
cout << "输入密码: ";
cin >> acc.password;
string strength = checkPasswordStrength(acc.password);
double crackTime = calculateCrackTime(acc.password);
cout << "密码强度: " << strength << endl;
cout << "估计破解时间: " << fixed << setprecision(2) << crackTime << " 秒" << endl;
accounts.push_back(acc);
saveData();
}
// 删除第三方账号密码数据
void deleteAccount() {
int id;
cout << "输入要删除的账号ID: ";
cin >> id;
auto it = remove_if(accounts.begin(), accounts.end(), [id](const Account& acc) {
return acc.id == id;
});
accounts.erase(it, accounts.end());
saveData();
}
// 查找第三方账号密码数据
void findAccount() {
string platform;
cout << "输入平台名称: ";
cin >> platform;
for (const auto& acc : accounts) {
if (acc.platform.find(platform) != string::npos) {
cout << "ID: " << acc.id << ", 平台: " << acc.platform
<< ", 账号: " << acc.username << ", 密码: " << acc.password << endl;
}
}
}
// 修改第三方账号密码数据
void modifyAccount() {
int id;
cout << "输入要修改的账号ID: ";
cin >> id;
for (auto& acc : accounts) {
if (acc.id == id) {
cout << "输入新的平台: ";
cin >> acc.platform;
cout << "输入新的账号: ";
cin >> acc.username;
cout << "输入新的密码: ";
cin >> acc.password;
saveData();
return;
}
}
cout << "未找到ID为" << id << "的账号。" << endl;
}
// 修改管理器密码
void changeMasterPassword() {
string oldPassword, newPassword;
cout << "输入当前密码: ";
cin >> oldPassword;
if (oldPassword != masterPassword) {
cout << "密码错误。" << endl;
return;
}
cout << "输入新密码: ";
cin >> newPassword;
masterPassword = newPassword;
saveMasterPassword();
}
// 显示所有弱密码
void showWeakPasswords() {
displayWeakPasswords();
}
// 显示重复的密码
void showDuplicatePasswords() {
displayDuplicatePasswords();
}
};
int main() {
PasswordManager pm;
int choice;
while (true) {
cout << "1. 添加第三方账号密码\n";
cout << "2. 删除第三方账号密码\n";
cout << "3. 查找第三方账号密码\n";
cout << "4. 修改第三方账号密码\n";
cout << "5. 修改管理器密码\n";
cout << "6. 显示所有弱密码\n";
cout << "7. 显示重复密码\n";
cout << "8. 退出\n";
cout << "请选择: ";
cin >> choice;
switch (choice) {
case 1: pm.addAccount(); break;
case 2: pm.deleteAccount(); break;
case 3: pm.findAccount(); break;
case 4: pm.modifyAccount(); break;
case 5: pm.changeMasterPassword(); break;
case 6: pm.showWeakPasswords(); break;
case 7: pm.showDuplicatePasswords(); break;
case 8: return 0;
default: cout << "无效选项。" << endl; break;
}
}
}