#include #include #include #include using namespace std; constexpr int minPasswordSize = 8; constexpr int maxPasswordSize = 12; constexpr int minUppercaseLetters = 1; constexpr int minLowercaseLetters = 3; constexpr int minDigits = 2; constexpr int minSymbols = 2; const char symbols[] = "!@#$%^&*()[]{}_-+=~`;:'\"\\|/?<>,."; string generate(const string &s) { unsigned seed = 123456789; unsigned index = 0; for(auto c: s) seed += ++index * c; auto randomEngine = default_random_engine(seed); unsigned passwordSize = max(minPasswordSize, minUppercaseLetters + minLowercaseLetters + minDigits + minSymbols); if(passwordSize < maxPasswordSize){ passwordSize += randomEngine() % (maxPasswordSize - passwordSize + 1); } vector sequence(passwordSize); for(unsigned i = 0; i < passwordSize; ++i) sequence[i] = randomEngine() ^ s[i % s.length()]; string password(passwordSize, ' '); index = 0; for(int i = 0; i < minUppercaseLetters; ++i, ++index) password[index] = 'A' + sequence[index] % 26; for(int i = 0; i < minLowercaseLetters; ++i, ++index) password[index] = 'a' + sequence[index] % 26; for(int i = 0; i < minDigits; ++i, ++index) password[index] = '0' + sequence[index] % 10; for(int i = 0; i < minSymbols; ++i, ++index) password[index] = symbols[sequence[index] % (sizeof(symbols) - 1)]; for(; index < passwordSize; ++index) password[index] = 33 + sequence[index] % (128 - 33); shuffle(password.begin(), password.end(), randomEngine); return password; } void showPassword(const std::string &s) { cout << " " << s << " ==> " << generate(s) << endl; } int main() { vector sameTest = {"Google01", "Facebook01", "Windows01"}; for(const auto &s: sameTest) showPassword(s); vector samePasswords1, samePasswords2; for(const auto &s: sameTest) samePasswords1.push_back(generate(s)); for(const auto &s: sameTest) samePasswords2.push_back(generate(s)); cout << "\ntest1 (is password the same):" << endl; for(unsigned i = 0; i < sameTest.size(); ++i){ bool same = samePasswords1[i] == samePasswords2[i]; cout << sameTest[i] << ": " << (same ? "same" : "different") << " --> " << samePasswords1[i] << (same ? " == " : " != ") << samePasswords2[i] << "\n"; } cout << "\ntest2 (is password unique):" << endl; vector uniqueTest = {"answer1", "answer2", "answer3"}; for(const auto &s: uniqueTest) showPassword(s); }

code for Password creator challenge (c++)