ParagonIE_Sodium_Compat::crypto_pwhash_str_needs_rehash( string $hash, int $opslimit, int $memlimit ): bool

2335    public static function crypto_pwhash_str_needs_rehash(2336        #[\SensitiveParameter]2337        $hash,2338        $opslimit,2339        $memlimit2340    ) {2341        ParagonIE_Sodium_Core_Util::declareScalarType($hash, 'string', 1);2342        ParagonIE_Sodium_Core_Util::declareScalarType($opslimit, 'int', 2);2343        ParagonIE_Sodium_Core_Util::declareScalarType($memlimit, 'int', 3);2344 2345        // Just grab the first 4 pieces.2346        $pieces = explode('$', (string) $hash);2347        $prefix = implode('$', array_slice($pieces, 0, 4));2348 2349        // Rebuild the expected header.2350        /** @var int $ops */2351        $ops = (int) $opslimit;2352        /** @var int $mem */2353        $mem = (int) $memlimit >> 10;2354        $encoded = self::CRYPTO_PWHASH_STRPREFIX . 'v=19$m=' . $mem . ',t=' . $ops . ',p=1';2355 2356        // Do they match? If so, we don't need to rehash, so return false.2357        return !ParagonIE_Sodium_Core_Util::hashEquals($encoded, $prefix);2358    }