ParagonIE_Sodium_Core32_Poly1305_State::blocks() │ public │ WP 1.0

{} Это метод класса: ParagonIE_Sodium_Core32_Poly1305_State{}

Хуков нет.

Возвращает

self.

Использование

$ParagonIE_Sodium_Core32_Poly1305_State = new ParagonIE_Sodium_Core32_Poly1305_State();
$ParagonIE_Sodium_Core32_Poly1305_State->blocks( $message, $bytes );

$message(строка) (обязательный)

-

$bytes(int) (обязательный)

-

Код ParagonIE_Sodium_Core32_Poly1305_State::blocks() ParagonIE Sodium Core32 Poly1305 State::blocks ^{WP 5.9.3}

public function blocks($message, $bytes)
{
    if (self::strlen($message) < 16) {
        $message = str_pad($message, 16, "\x00", STR_PAD_RIGHT);
    }
    $hibit = ParagonIE_Sodium_Core32_Int32::fromInt((int) ($this->final ? 0 : 1 << 24)); /* 1 << 128 */
    $hibit->setUnsignedInt(true);
    $zero = new ParagonIE_Sodium_Core32_Int64(array(0, 0, 0, 0), true);
    /**
     * @var ParagonIE_Sodium_Core32_Int64 $d0
     * @var ParagonIE_Sodium_Core32_Int64 $d1
     * @var ParagonIE_Sodium_Core32_Int64 $d2
     * @var ParagonIE_Sodium_Core32_Int64 $d3
     * @var ParagonIE_Sodium_Core32_Int64 $d4
     * @var ParagonIE_Sodium_Core32_Int64 $r0
     * @var ParagonIE_Sodium_Core32_Int64 $r1
     * @var ParagonIE_Sodium_Core32_Int64 $r2
     * @var ParagonIE_Sodium_Core32_Int64 $r3
     * @var ParagonIE_Sodium_Core32_Int64 $r4
     *
     * @var ParagonIE_Sodium_Core32_Int32 $h0
     * @var ParagonIE_Sodium_Core32_Int32 $h1
     * @var ParagonIE_Sodium_Core32_Int32 $h2
     * @var ParagonIE_Sodium_Core32_Int32 $h3
     * @var ParagonIE_Sodium_Core32_Int32 $h4
     */
    $r0 = $this->r[0]->toInt64();
    $r1 = $this->r[1]->toInt64();
    $r2 = $this->r[2]->toInt64();
    $r3 = $this->r[3]->toInt64();
    $r4 = $this->r[4]->toInt64();

    $s1 = $r1->toInt64()->mulInt(5, 3);
    $s2 = $r2->toInt64()->mulInt(5, 3);
    $s3 = $r3->toInt64()->mulInt(5, 3);
    $s4 = $r4->toInt64()->mulInt(5, 3);

    $h0 = $this->h[0];
    $h1 = $this->h[1];
    $h2 = $this->h[2];
    $h3 = $this->h[3];
    $h4 = $this->h[4];

    while ($bytes >= ParagonIE_Sodium_Core32_Poly1305::BLOCK_SIZE) {
        /* h += m[i] */
        $h0 = $h0->addInt32(
            ParagonIE_Sodium_Core32_Int32::fromReverseString(self::substr($message, 0, 4))
                ->mask(0x3ffffff)
        )->toInt64();
        $h1 = $h1->addInt32(
            ParagonIE_Sodium_Core32_Int32::fromReverseString(self::substr($message, 3, 4))
                ->shiftRight(2)
                ->mask(0x3ffffff)
        )->toInt64();
        $h2 = $h2->addInt32(
            ParagonIE_Sodium_Core32_Int32::fromReverseString(self::substr($message, 6, 4))
                ->shiftRight(4)
                ->mask(0x3ffffff)
        )->toInt64();
        $h3 = $h3->addInt32(
            ParagonIE_Sodium_Core32_Int32::fromReverseString(self::substr($message, 9, 4))
                ->shiftRight(6)
                ->mask(0x3ffffff)
        )->toInt64();
        $h4 = $h4->addInt32(
            ParagonIE_Sodium_Core32_Int32::fromReverseString(self::substr($message, 12, 4))
                ->shiftRight(8)
                ->orInt32($hibit)
        )->toInt64();

        /* h *= r */
        $d0 = $zero
            ->addInt64($h0->mulInt64($r0, 25))
            ->addInt64($s4->mulInt64($h1, 26))
            ->addInt64($s3->mulInt64($h2, 26))
            ->addInt64($s2->mulInt64($h3, 26))
            ->addInt64($s1->mulInt64($h4, 26));

        $d1 = $zero
            ->addInt64($h0->mulInt64($r1, 25))
            ->addInt64($h1->mulInt64($r0, 25))
            ->addInt64($s4->mulInt64($h2, 26))
            ->addInt64($s3->mulInt64($h3, 26))
            ->addInt64($s2->mulInt64($h4, 26));

        $d2 = $zero
            ->addInt64($h0->mulInt64($r2, 25))
            ->addInt64($h1->mulInt64($r1, 25))
            ->addInt64($h2->mulInt64($r0, 25))
            ->addInt64($s4->mulInt64($h3, 26))
            ->addInt64($s3->mulInt64($h4, 26));

        $d3 = $zero
            ->addInt64($h0->mulInt64($r3, 25))
            ->addInt64($h1->mulInt64($r2, 25))
            ->addInt64($h2->mulInt64($r1, 25))
            ->addInt64($h3->mulInt64($r0, 25))
            ->addInt64($s4->mulInt64($h4, 26));

        $d4 = $zero
            ->addInt64($h0->mulInt64($r4, 25))
            ->addInt64($h1->mulInt64($r3, 25))
            ->addInt64($h2->mulInt64($r2, 25))
            ->addInt64($h3->mulInt64($r1, 25))
            ->addInt64($h4->mulInt64($r0, 25));

        /* (partial) h %= p */
        $c = $d0->shiftRight(26);
        $h0 = $d0->toInt32()->mask(0x3ffffff);
        $d1 = $d1->addInt64($c);

        $c = $d1->shiftRight(26);
        $h1 = $d1->toInt32()->mask(0x3ffffff);
        $d2 = $d2->addInt64($c);

        $c = $d2->shiftRight(26);
        $h2 = $d2->toInt32()->mask(0x3ffffff);
        $d3 = $d3->addInt64($c);

        $c = $d3->shiftRight(26);
        $h3 = $d3->toInt32()->mask(0x3ffffff);
        $d4 = $d4->addInt64($c);

        $c = $d4->shiftRight(26);
        $h4 = $d4->toInt32()->mask(0x3ffffff);
        $h0 = $h0->addInt32($c->toInt32()->mulInt(5, 3));

        $c = $h0->shiftRight(26);
        $h0 = $h0->mask(0x3ffffff);
        $h1 = $h1->addInt32($c);

        // Chop off the left 32 bytes.
        $message = self::substr(
            $message,
            ParagonIE_Sodium_Core32_Poly1305::BLOCK_SIZE
        );
        $bytes -= ParagonIE_Sodium_Core32_Poly1305::BLOCK_SIZE;
    }

    /** @var array<int, ParagonIE_Sodium_Core32_Int32> $h */
    $this->h = array($h0, $h1, $h2, $h3, $h4);
    return $this;
}