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smartywanabee
Smarty n00b
Joined: 16 Apr 2004
Posts: 3
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 Posted: Thu Aug 19, 2004 9:34 am Post subject: md5 encryption possibilities? |
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I want to add simple encryption to URL values passed, basically I will encrypt the complete string and an hidden or secret value, when the page is opened I check the encryption value (i.e. the one containing the original string and hidden word) with the value of the new URL string,
$_SERVER['QUERY_STRING']
in PHP it may look like this..
| Code: | $querystring = 'variable1=foo1&variable2=foo2;
$secretword = 'encrypt';
//Creating the query string for the link
$md5 = md5($querystring.$secretword);
$querystring = $querystring .'&hash='.$md5;
The link would then be
echo "<a href=\"test.php?".$querystring."\">click here</a><br>"; |
On the resulting page I would carry out the following
| Code: | if ($_SERVER['QUERY_STRING']){
//Decoding the querystring
$querystring = $_SERVER['QUERY_STRING'];
$data = explode('&hash=',$querystring);
if(md5($data[0].$secretword) == $data[1]) {
//data is valid
} else {
//data isn't valid - its been messed with
}
} |
This works fine in PHP, but most of my links are generated in the smarty template, so my question is if there is an easy way to carry out basic encrytion within smarty such as described above. |
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mohrt
Administrator
Joined: 16 Apr 2003
Posts: 7368
Location: Lincoln Nebraska, USA
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| Posted: Thu Aug 19, 2004 1:38 pm Post subject: |
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You could generate your hash with a custom modifier, such as:
| Code: | | <a href="http://foo.com?{"foo=bar&blah=fnargle"|makehash}">click</a> |
Which would render to:
| Code: | <a href="http://foo.com?foo=bar&blah=fnargle&hash=ba813d572107a97e0b1f0a78fbb4b731">click</a>
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