nemunaire/paste-manager
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Add an encryption system

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Némunaire 2012-01-30 16:04:43 +01:00
commit dc91e89393
2 changed files with 72 additions and 10 deletions
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35
paste.class.php
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@ -14,6 +14,7 @@ class Paste
var $ip;
var $ref = NULL;
var $hash;
var $crypt = NULL;
var $answers = array();
/**
@ -30,6 +31,29 @@ class Paste
}
}
static function cxor($msg, $cle)
{
$cle = hash("whirlpool", $cle);
$xor = NULL;
for($i = 0; $i < strlen($msg); $i++)
$xor .= substr($msg,$i,1) ^ substr($cle, $i % strlen($cle), 1);
return $xor;
}
function crypt($key)
{
if (!empty($this->crypt))
$this->crypt = Paste::cxor($this->crypt, $key);
else
$this->crypt = Paste::cxor(sha1($key), $key);
if ($this->crypt == sha1($key))
$this->content = Paste::cxor(base64_decode($this->content), $key);
else
$this->content = base64_encode(Paste::cxor($this->content, $key));
}
/**
* Load or reload the file and set attributes
*/
@ -58,6 +82,11 @@ class Paste
else
$this->hash = NULL;
if ($doc->getElementsByTagName("crypt")->length > 0)
$this->crypt = base64_decode($doc->getElementsByTagName("crypt")->item(0)->textContent);
else
$this->crypt = NULL;
for ($i = 0; $i < $doc->getElementsByTagName("answer")->length; $i++)
$this->answers[] = $doc->getElementsByTagName("answer")->item($i)->textContent;
@ -130,6 +159,9 @@ class Paste
$xml_paste->appendChild(
$xml->createElement("content", $this->content));
if (!empty($this->crypt))
$xml_paste->appendChild(
$xml->createElement("crypt", base64_encode($this->crypt)));
if (!empty($this->ref))
{
//Also indicate in the parent file
@ -179,6 +211,9 @@ class Paste
//TODO: allow uploading file
$this->content = $dict["content"];
if (!empty($dict["crypt"]))
$this->crypt($dict["crypt"]);
}
/**