Determining validation of password, against password hash.

pass_hash_validator.py

#!/usr/bin/python3
""" Determining validation of a password, against its hash. """

import bcrypt
from getpass import getpass

# simulation of hashed password stored in a DBMS (MongoDB, MySQL, SQLite, etc.)
salt = bcrypt.gensalt()
db_password = "Guido*Py2017".encode('utf-8')
db_pass_hash = bcrypt.hashpw(db_password,salt)

# receiving password and generating a hash, using the password hash from the DBMS as salt
# info: the salt value is stored at the beggining of the password hash
password = getpass(prompt="Please, insert the password: ").encode('utf-8')
pass_hash = bcrypt.hashpw(password,db_pass_hash)

print("\n- Password Hash (DBMS): ",db_pass_hash)
print("- Password Hash (Input):",pass_hash)
if pass_hash == db_pass_hash:
    print("\nLogin Successful!")
else:
    print("\nWrong Password!")