Tag: login

Main function will ask what the user wants to do. LoginSystem class will handle the sign up and login process as well with the checking if password is right. passwordHashing will use bcrpyt to salt and hash the password.

import bcrypt
from loginDbMySQL import insert, logging_in


def main():
    
    login_instance = LoginSystem()
    check = True

    while check == True:
        value = input("1-Login, 2-Sign-up, 3-Exitn")
        if value == "1":
            login_instance.login()
            check = True
        elif value == "2":
            login_instance.sign_up()
            check = True
        elif value == "3":
            check = False

class LoginSystem():

    def sign_up(self):
        username = input("Enter a username: ")
        password = input("Enter a password: ")
        
        password_hash = self.passwordHashing(password)
        insert(username, password_hash)

    def login(self):
        username = input("Enter a username: ")
        password = input("Enter a password: ")

        password_hash = logging_in(username)
        self.comparePassword(password, password_hash)

    def passwordHashing(self, password):

        password_bytes = password.encode('utf8')

        salt = bcrypt.gensalt(14)
    
        password_hash_byte = bcrypt.hashpw(password_bytes, salt)

        password_hash_str = password_hash_byte.decode()

        return password_hash_str

    def comparePassword(self,password,password_hash):

        if bcrypt.checkpw(password.encode('utf8'), password_hash.encode('utf8')):
            print("Welcome")
        else:
            print("Incorrect Information")


if __name__ == "__main__":
    main()

loginDbMySQL handles the database insertion, checking, and query’s

import mysql.connector


mydb = mysql.connector.connect(
    host="localhost",
    user="root",
    password="*******",
    database="*******"
)

mycursor = mydb.cursor()

def insert(username,password_hash):

    mycursor = mydb.cursor(buffered=True)
    select_query = "SELECT usernames FROM login_table WHERE usernames= %s"
    mycursor.execute(select_query, (username,))
    check = mycursor.fetchone()

    if check == None:
        mycursor.execute("INSERT INTO login_table (usernames, password_hashs) VALUES (%s,%s)", (username, password_hash))
        mydb.commit()
        print("Account created!")

    else:
        print("Account already exist.")

def logging_in(username):

    mycursor = mydb.cursor(buffered=True)
    select_query = "SELECT * FROM login_table WHERE usernames= %s"
    mycursor.execute(select_query, (username,))
    check = mycursor.fetchone()
    
    if check == None:
        print("Incorrect information.")
    else:
        return check(1)