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RC2: make pitable / invpitable tables static

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This commit is contained in:
terrafrost 2018-12-02 14:13:08 -06:00
parent b278bc7e7e
commit e758878580
1 changed files with 5 additions and 5 deletions
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10
phpseclib/Crypt/RC2.php
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@ -152,7 +152,7 @@ class RC2 extends BlockCipher
* @var array
* @access private
*/
private $pitable = [
private static $pitable = [
0xD9, 0x78, 0xF9, 0xC4, 0x19, 0xDD, 0xB5, 0xED,
0x28, 0xE9, 0xFD, 0x79, 0x4A, 0xA0, 0xD8, 0x9D,
0xC6, 0x7E, 0x37, 0x83, 0x2B, 0x76, 0x53, 0x8E,
@ -226,7 +226,7 @@ class RC2 extends BlockCipher
* @var array
* @access private
*/
private $invpitable = [
private static $invpitable = [
0xD1, 0xDA, 0xB9, 0x6F, 0x9C, 0xC8, 0x78, 0x66,
0x80, 0x2C, 0xF8, 0x37, 0xEA, 0xE0, 0x62, 0xA4,
0xCB, 0x71, 0x50, 0x27, 0x4B, 0x95, 0xD9, 0x20,
@ -378,7 +378,7 @@ class RC2 extends BlockCipher
$tm = 0xFF >> (8 * $t8 - $t1);
// Expand key.
$pitable = $this->pitable;
$pitable = self::$pitable;
for ($i = $t; $i < 128; $i++) {
$l[$i] = $pitable[$l[$i - 1] + $l[$i - $t]];
}
@ -389,7 +389,7 @@ class RC2 extends BlockCipher
}
// Prepare the key for mcrypt.
$l[0] = $this->invpitable[$l[0]];
$l[0] = self::$invpitable[$l[0]];
array_unshift($l, 'C*');
$this->key = call_user_func_array('pack', $l);
@ -549,7 +549,7 @@ class RC2 extends BlockCipher
// Key has already been expanded in \phpseclib\Crypt\RC2::setKey():
// Only the first value must be altered.
$l = unpack('Ca/Cb/v*', $this->key);
array_unshift($l, $this->pitable[$l['a']] | ($l['b'] << 8));
array_unshift($l, self::$pitable[$l['a']] | ($l['b'] << 8));
unset($l['a']);
unset($l['b']);
$this->keys = $l;