ParagonIE_Sodium_Core_AES_Block

10class ParagonIE_Sodium_Core_AES_Block extends SplFixedArray11{12    /**13     * @var array<int, int>14     */15    protected $values = array();16 17    /**18     * @var int19     */20    protected $size;21 22    /**23     * @param int $size24     */25    public function __construct($size = 8)26    {27        parent::__construct($size);28        $this->size = $size;29        $this->values = array_fill(0, $size, 0);30    }31 32    /**33     * @return self34     */35    public static function init()36    {37        return new self(8);38    }39 40    /**41     * @internal You should not use this directly from another application42     *43     * @param array<int, int> $array44     * @param bool $save_indexes45     * @return self46     *47     * @psalm-suppress MethodSignatureMismatch48     */49    #[ReturnTypeWillChange]50    public static function fromArray($array, $save_indexes = null)51    {52        $count = count($array);53        if ($save_indexes) {54            $keys = array_keys($array);55        } else {56            $keys = range(0, $count - 1);57        }58        $array = array_values($array);59        /** @var array<int, int> $keys */60 61        $obj = new ParagonIE_Sodium_Core_AES_Block();62        if ($save_indexes) {63            for ($i = 0; $i < $count; ++$i) {64                $obj->offsetSet($keys[$i], $array[$i]);65            }66        } else {67            for ($i = 0; $i < $count; ++$i) {68                $obj->offsetSet($i, $array[$i]);69            }70        }71        return $obj;72    }73 74 75    /**76     * @internal You should not use this directly from another application77     *78     * @param int|null $offset79     * @param int $value80     * @return void81     *82     * @psalm-suppress MethodSignatureMismatch83     * @psalm-suppress MixedArrayOffset84     */85    #[ReturnTypeWillChange]86    public function offsetSet($offset, $value)87    {88        if (!is_int($value)) {89            throw new InvalidArgumentException('Expected an integer');