极客大学架构师训练营 0 期 week 11 作业

package com.szp.geektime.architecture.lesson11;
import java.util.HashMap;
import java.util.Map;
import org.springframework.security.crypto.bcrypt.BCrypt;
public class UserLoginService {
//    key userId
    //save salt
    Map<String,String> saltMap = new HashMap<>();
    //    key userId
    // save encriptPassword
    Map<String,String> encriptPasswordMap = new HashMap<>();
    public boolean register(String userId, String password){
        if(saltMap.containsKey(userId))
            return false;
        String hash1 = BCrypt.gensalt(8);
        saltMap.put(userId, hash1);
        String encriptPW = BCrypt.hashpw(password, hash1);
        encriptPasswordMap.put(userId, encriptPW);
        return true;
    }
    public boolean login(String userId, String password){
        //validate userId
        if(null == userId)
            return false;
        String salt = saltMap.get(userId);
        // not registered
        if(null == salt)
            return false;
        //validate password
        String encriptPW = BCrypt.hashpw(password, salt);
        if(encriptPW.equals(encriptPasswordMap.get(userId))){
            return true;
        }
        return false;
    }
    public static void main(String[] args) {
        UserLoginService userLoginService = new UserLoginService();
        String userId1 = "Jack";
        String password1 = "123456";
        System.out.println("user " + userId1 + "register result :"
                + userLoginService.register(userId1, password1));
        System.out.println("user " + userId1 + "login result(false password) :"
                + userLoginService.login(userId1, "654321"));
        System.out.println("user " + userId1 + "register result(correct password) :"
                + userLoginService.login(userId1, password1));
        String userId2 = "Tom";
        String password2 = "abcdef";
        System.out.println("user " + userId2 + "register result :"
                + userLoginService.register(userId2, password2));
        System.out.println("user " + userId2 + "login result(false password) :"
                + userLoginService.login(userId2, "fedcba"));
        System.out.println("user " + userId2 + "register result(correct password) :"
                + userLoginService.login(userId2, password2));
    }
}

user Jack register result :true
user Jack login result(false password) :false
user Jack register result(correct password) :true
user Tom register result :true
user Tom login result(false password) :false
user Tom register result(correct password) :true