ParagonIE_Sodium_Core32_Poly1305_State

10class ParagonIE_Sodium_Core32_Poly1305_State extends ParagonIE_Sodium_Core32_Util11{12    /**13     * @var array<int, int>14     */15    protected $buffer = array();16 17    /**18     * @var bool19     */20    protected $final = false;21 22    /**23     * @var array<int, ParagonIE_Sodium_Core32_Int32>24     */25    public $h;26 27    /**28     * @var int29     */30    protected $leftover = 0;31 32    /**33     * @var array<int, ParagonIE_Sodium_Core32_Int32>34     */35    public $r;36 37    /**38     * @var array<int, ParagonIE_Sodium_Core32_Int64>39     */40    public $pad;41 42    /**43     * ParagonIE_Sodium_Core32_Poly1305_State constructor.44     *45     * @internal You should not use this directly from another application46     *47     * @param string $key48     * @throws InvalidArgumentException49     * @throws SodiumException50     * @throws TypeError51     */52    public function __construct($key = '')53    {54        if (self::strlen($key) < 32) {55            throw new InvalidArgumentException(56                'Poly1305 requires a 32-byte key'57            );58        }59        /* r &= 0xffffffc0ffffffc0ffffffc0fffffff */60        $this->r = array(61            // st->r[0] = ...62            ParagonIE_Sodium_Core32_Int32::fromReverseString(self::substr($key, 0, 4))63                ->setUnsignedInt(true)64                ->mask(0x3ffffff),65            // st->r[1] = ...66            ParagonIE_Sodium_Core32_Int32::fromReverseString(self::substr($key, 3, 4))67                ->setUnsignedInt(true)68                ->shiftRight(2)69                ->mask(0x3ffff03),70            // st->r[2] = ...71            ParagonIE_Sodium_Core32_Int32::fromReverseString(self::substr($key, 6, 4))72                ->setUnsignedInt(true)73                ->shiftRight(4)74                ->mask(0x3ffc0ff),75            // st->r[3] = ...76            ParagonIE_Sodium_Core32_Int32::fromReverseString(self::substr($key, 9, 4))77                ->setUnsignedInt(true)78                ->shiftRight(6)79                ->mask(0x3f03fff),80            // st->r[4] = ...81            ParagonIE_Sodium_Core32_Int32::fromReverseString(self::substr($key, 12, 4))82                ->setUnsignedInt(true)83                ->shiftRight(8)84                ->mask(0x00fffff)85        );86 87        /* h = 0 */88        $this->h = array(89            new ParagonIE_Sodium_Core32_Int32(array(0, 0), true),