sumocoders
diff --git a/‎composer.json
Lines changed: 2 additions & 1 deletion b/‎composer.json
Lines changed: 2 additions & 1 deletion
diff --git a/‎src/Security/PasswordStrengthService.php
Lines changed: 56 additions & 0 deletions b/‎src/Security/PasswordStrengthService.php
Lines changed: 56 additions & 0 deletions
@@ -36,7 +36,8 @@
     "twig/extra-bundle": "^3.3",
     "symfony/ux-autocomplete": "^2.8",
     "doctrine/doctrine-bundle": "^2.11",
-    "doctrine/orm": "^2.0"
+    "doctrine/orm": "^2.0",
+    "symfony/ux-toggle-password": "^2.16"
   },
   "require-dev": {
     "roave/security-advisories": "dev-master",
 
@@ -0,0 +1,56 @@
+<?php
+
+namespace SumoCoders\FrameworkCoreBundle\Security;
+
+/**
+ * This service can be used to estimate the strength of a password.
+ * It's based on the private static method Symfony\Component\Validator\Constraints\PasswordStrengthValidator::estimateStrength.
+ */
+class PasswordStrengthService
+{
+    public const STRENGTH_VERY_WEAK = 0;
+    public const STRENGTH_WEAK = 1;
+    public const STRENGTH_MEDIUM = 2;
+    public const STRENGTH_STRONG = 3;
+    public const STRENGTH_VERY_STRONG = 4;
+
+    /**
+     * Returns the estimated strength of a password.
+     *
+     * The higher the value, the stronger the password.
+     *
+     * @return PasswordStrength::STRENGTH_*
+     */
+    public function estimateStrength(
+        string $password
+    ): int  {
+        if (!$length = \strlen($password)) {
+            return self::STRENGTH_VERY_WEAK;
+        }
+        $password = count_chars($password, 1);
+        $chars = \count($password);
+
+        $control = $digit = $upper = $lower = $symbol = $other = 0;
+        foreach ($password as $chr => $count) {
+            match (true) {
+                $chr < 32 || 127 === $chr => $control = 33,
+                48 <= $chr && $chr <= 57 => $digit = 10,
+                65 <= $chr && $chr <= 90 => $upper = 26,
+                97 <= $chr && $chr <= 122 => $lower = 26,
+                128 <= $chr => $other = 128,
+                default => $symbol = 33,
+            };
+        }
+
+        $pool = $lower + $upper + $digit + $symbol + $control + $other;
+        $entropy = $chars * log($pool, 2) + ($length - $chars) * log($chars, 2);
+
+        return match (true) {
+            $entropy >= 120 => self::STRENGTH_VERY_STRONG,
+            $entropy >= 100 => self::STRENGTH_STRONG,
+            $entropy >= 80 => self::STRENGTH_MEDIUM,
+            $entropy >= 60 => self::STRENGTH_WEAK,
+            default => self::STRENGTH_VERY_WEAK,
+        };
+    }
+}