public function setKey(Key $key)
{
if ($key->getLength() == 16) {
$byte = new Byte(24);
$byte->set($key->get() . $key->getRange(0, 8));
$key = new Key($byte);
}
$this->key = $key;
return $this;
}
private function spread()
{
$spread = new Byte(16);
for ($i = 0; $i < 16; $i++) {
if ($i == 0) {
$spread->setOneAscii($this->byte->getOne($i)->ord() & 0xfe, $i);
} elseif ($i >= 1 && $i <= 6) {
$spread->setOneAscii(($this->byte->getOne($i - 1)->ord() << 8 - $i | $this->byte->getOne($i)->ord() >> $i) & 0xfe, $i);
} elseif ($i == 7) {
$spread->setOneAscii($this->byte->getOne($i - 1)->ord() << 1, $i);
} elseif ($i == 8) {
$spread->setOneAscii($this->byte->getOne($i - 1)->ord() & 0xfe, $i);
} elseif ($i >= 9 && $i <= 14) {
$spread->setOneAscii(($this->byte->getOne($i - 2)->ord() << 16 - $i | $this->byte->getOne($i - 1)->ord() >> $i - 8) & 0xfe, $i);
} elseif ($i == 15) {
$spread->setOneAscii($this->byte->getOne($i - 2)->ord() << 1, $i);
}
}
// $spread[ 0] = $this->byte->getOne(0)->ord() & 0xfe;
// $spread[ 1] = (($this->byte->getOne(0)->ord() << 7) | ($this->byte->getOne(1)->ord() >> 1)) & 0xfe;
// $spread[ 2] = (($this->byte->getOne(1)->ord() << 6) | ($this->byte->getOne(2)->ord() >> 2)) & 0xfe;
// $spread[ 3] = (($this->byte->getOne(2)->ord() << 5) | ($this->byte->getOne(3)->ord() >> 3)) & 0xfe;
// $spread[ 4] = (($this->byte->getOne(3)->ord() << 4) | ($this->byte->getOne(4)->ord() >> 4)) & 0xfe;
// $spread[ 5] = (($this->byte->getOne(4)->ord() << 3) | ($this->byte->getOne(5)->ord() >> 5)) & 0xfe;
// $spread[ 6] = (($this->byte->getOne(5)->ord() << 2) | ($this->byte->getOne(6)->ord() >> 6)) & 0xfe;
// $spread[ 7] = $this->byte->getOne(6)->ord() << 1;
// $spread[ 8] = $this->byte->getOne(7)->ord() & 0xfe;
// $spread[ 9] = (($this->byte->getOne(7)->ord() << 7) | ($this->byte->getOne(8)->ord() >> 1)) & 0xfe;
// $spread[10] = (($this->byte->getOne(8)->ord() << 6) | ($this->byte->getOne(9)->ord() >> 2)) & 0xfe;
// $spread[11] = (($this->byte->getOne(9)->ord() << 5) | ($this->byte->getOne(10)->ord() >> 3)) & 0xfe;
// $spread[12] = (($this->byte->getOne(10)->ord() << 4) | ($this->byte->getOne(11)->ord() >> 4)) & 0xfe;
// $spread[13] = (($this->byte->getOne(11)->ord() << 3) | ($this->byte->getOne(12)->ord() >> 5)) & 0xfe;
// $spread[14] = (($this->byte->getOne(12)->ord() << 2) | ($this->byte->getOne(13)->ord() >> 6)) & 0xfe;
// $spread[15] = $this->byte->getOne(13)->ord() << 1;
$this->byte = $spread;
return $this;
}
public function testGetRange()
{
$one = $this->byte->getRange(2, 2);
$this->assertInstanceOf('Newcamd\\Byte', $one);
$this->assertEquals('te', $one->get());
}
public function decrypt(Byte $message)
{
return ByteFactory::create(mcrypt_decrypt(MCRYPT_3DES, $this->getKey(), $message->get(), MCRYPT_MODE_CBC, $this->getIv()));
}
public function getRandom($length)
{
$length = (int) $length;
$buffer = new Byte($length);
$buffer->set($this->cipher->getRandom($length));
return $buffer;
}
