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php大数据源码 php处理大数据用什么方法( 二 )

IT技术大数


class text_auth
{
var $n_iter;
function text_auth()
{
$this-setIter(32);
}
function setIter($n_iter)
{
$this-n_iter = $n_iter;
}
function getIter()
{
return $this-n_iter;
}
function encrypt($data, $key)
{
$n = $this-_resize($data, 4);
$data_long[0]= $n;
$n_data_long= $this-_str2long(1, $data, $data_long);$n = count($data_long);
if (($n1) == 1) {
$data_long[$n] = chr(0);
$n_data_long++;
}
$this-_resize($key, 16, true);
if ( '' == $key )
$key = '0000000000000000';
$n_key_long = $this-_str2long(0, $key, $key_long);$enc_data=https://www.04ip.com/post/'';
$w= array(0, 0);
$j= 0;
$k= array(0, 0, 0, 0);
for ($i = 0; $i$n_data_long; ++$i) {
if ($j + 4 = $n_key_long) {
$k[0] = $key_long[$j];
$k[1] = $key_long[$j + 1];
$k[2] = $key_long[$j + 2];
$k[3] = $key_long[$j + 3];
} else {
$k[0] = $key_long[$j % $n_key_long];
$k[1] = $key_long[($j + 1) % $n_key_long];$k[2] = $key_long[($j + 2) % $n_key_long];$k[3] = $key_long[($j + 3) % $n_key_long];}
$j = ($j + 4) % $n_key_long;
$this-_encipherLong($data_long[$i], $data_long[++$i], $w, $k);$enc_data .= $this-_long2str($w[0]);
$enc_data .= $this-_long2str($w[1]);
}
return $enc_data;
}
function decrypt($enc_data, $key)
{
$n_enc_data_long = $this-_str2long(0, $enc_data, $enc_data_long);$this-_resize($key, 16, true);
if ( '' == $key )
$key = '0000000000000000';
$n_key_long = $this-_str2long(0, $key, $key_long);$data=https://www.04ip.com/post/'';
$w= array(0, 0);
$j= 0;
$len= 0;
$k= array(0, 0, 0, 0);
$pos= 0;
for ($i = 0; $i$n_enc_data_long; $i += 2) {if ($j + 4 = $n_key_long) {
$k[0] = $key_long[$j];
$k[1] = $key_long[$j + 1];
$k[2] = $key_long[$j + 2];
$k[3] = $key_long[$j + 3];
} else {
$k[0] = $key_long[$j % $n_key_long];
$k[1] = $key_long[($j + 1) % $n_key_long];$k[2] = $key_long[($j + 2) % $n_key_long];$k[3] = $key_long[($j + 3) % $n_key_long];}
$j = ($j + 4) % $n_key_long;
$this-_decipherLong($enc_data_long[$i], $enc_data_long[$i + 1], $w, $k);if (0 == $i) {
$len = $w[0];
if (4 = $len) {
$data .= $this-_long2str($w[1]);
} else {
$data .= substr($this-_long2str($w[1]), 0, $len % 4);}
} else {
$pos = ($i - 1) * 4;
if ($pos + 4 = $len) {
$data .= $this-_long2str($w[0]);
if ($pos + 8 = $len) {
$data .= $this-_long2str($w[1]);
} elseif ($pos + 4$len) {
$data .= substr($this-_long2str($w[1]), 0, $len % 4);}
} else {
$data .= substr($this-_long2str($w[0]), 0, $len % 4);}
}
}
return $data;
}
function _encipherLong($y, $z, $w, $k)
{
$sum= (integer) 0;
$delta= 0x9E3779B9;
$n= (integer) $this-n_iter;
while ($n--0) {
$y= $this-_add($y,
$this-_add($z4 ^ $this-_rshift($z, 5), $z) ^$this-_add($sum, $k[$sum3]));
$sum= $this-_add($sum, $delta);
$z= $this-_add($z,
$this-_add($y4 ^ $this-_rshift($y, 5), $y) ^$this-_add($sum, $k[$this-_rshift($sum, 11)3]));}
$w[0] = $y;
$w[1] = $z;
}
function _decipherLong($y, $z, $w, $k)
{
$sum= 0xC6EF3720;
$delta= 0x9E3779B9;
$n= (integer) $this-n_iter;
while ($n--0) {
$z= $this-_add($z,
-($this-_add($y4 ^ $this-_rshift($y, 5), $y) ^$this-_add($sum, $k[$this-_rshift($sum, 11)3])));$sum= $this-_add($sum, -$delta);
$y= $this-_add($y,
-($this-_add($z4 ^ $this-_rshift($z, 5), $z) ^$this-_add($sum, $k[$sum3])));
}
$w[0] = $y;
$w[1] = $z;
}
function _resize($data, $size, $nonull = false){
$n= strlen($data);
$nmod= $n % $size;
if ( 0 == $nmod )
$nmod = $size;
if ($nmod0) {

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