yarri/password-strength-analyzer

PasswordStrengthAnalyzer analyzes given password and scores its strength from 0% to 100%.

v0.1.2 2022-08-18 18:31 UTC

This package is auto-updated.

Last update: 2024-10-17 14:28:43 UTC


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PasswordStrengthAnalyzer analyzes given password and scores its strength from 0% to 100%.

Usage

$analyzer = new Yarri\PasswordStrengthAnalyzer();
$score = $analyzer->analyze("someFAIRpasswd"); // 26

Usually, passwords with letters, numbers, symbols are considered as strong. It is also true for PasswordStrengthAnalyzer.

echo $analyzer->analyze("SomW2!3RE#"); // 91

PasswordStrengthAnalyzer will also rate letter-only passwords high if they are long enough.

echo $analyzer->analyze("someBOYS"); // 9
echo $analyzer->analyze("someBOYSdontCRY"); // 38
echo $analyzer->analyze("someBOYSdontCRYmuch"); // 71

But not all long passwords are rated high.

echo $analyzer->analyze("somesomesomesomesomesome"); // 4

Groups of 3 or more consecutive characters have a negative impact on the final score.

echo $analyzer->analyze("Secret18239!"); // 58
echo $analyzer->analyze("Secret12345!"); // 45
echo $analyzer->analyze("Secret76543!"); // 45

echo $analyzer->analyze("OpenAFBGCED!"); // 42
echo $analyzer->analyze("OpenABCDEFG!"); // 28

Installation

Just use the Composer:

composer require yarri/password-strength-analyzer

Live testing

In the package, there is a script runnable in shell which can be used for live testing.

$ php test/test_cli.php

initial score: 50%
coefficients:
* unique_chars: 1.8
* password_length: 1.2
* types_used: 0.675
* type_transitions: 0.7465
* simplicity_factor: 1
FINAL SCORE: 54%
password: THISisS3CR3T

License

PasswordStrengthAnalyzer is free software distributed under the terms of the MIT license