PHP Classes

te-edu Password Meter: Check whether a password is strong

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password-meter 1.0BSD License5.0PHP 5, Validation, Security


This class can be used to check whether a password is strong enough to not be guessed easily.

It can perform several tests on a given password string to compute a score that represents the strength of a password.

Password checking is based on Brute Force Attack class A and considering 10 millions password checks in one minute. Checking characters, characters pairs, repeated characters, time neded to be discovered password, chars standrd entropy, etc.

Innovation Award
PHP Programming Innovation award nominee
July 2010
Number 2

Prize: One year server license IP to country region city database
Practically all sites that provide personalized access, require that the users create an account and choose a password.

This way, the sites can identify and authenticate the users and only provide access to the accounts information and services to the users that really own the respective account.

One problem with this approach is that many users choose passwords that are easy to guess.

This class provides a solution to prevent that users choose passwords that are too easy to guess.

It computes a score for each password that the user chooses, so the site may ask the user to choose an harder to guess password if the score is too low.

Manuel Lemos
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