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Only send certain fields

Posted on 2003-11-21
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Last Modified: 2010-04-09
Is there anyway I can choose which fields i want sent in a posted form?
I currently have the fields user and pass and enc in a login form.
Enc is an encryption of pass.
I only want to send user and enc.

I have thought about just encrypting pass into the pass field when the user attempts to login, but i don't want to do it this way.

Is there any other option i can try?
0
Comment
Question by:enasni_mark
8 Comments
 
LVL 8

Expert Comment

by:Barry62
ID: 9800093
Here you go!

<html>
<head>
<title></title>
<script type="text/javascript">
function encryptit(){
  /*encryption
     code
     goes
     here
  */
  testform2.enc2.value = //encrypted password
  testform2.user2.value = testform.user.value;
  testform2.submit();
}
</script>
</head>
<body>
<form name="testform" onSubmit="encryptit();">
Username: <input type="text" name="user"><br>
Password: <input type="password"><br>
<div align="center"><input type="submit">
</form>

<form name="testform2" action="somepage" method="post">
 <input type="hidden" name="enc2">
<input type="hidden" name="user2">
</form>
0
 

Expert Comment

by:TigerBoy
ID: 9800100
You could always add a onSubmit event that will remove the pass field from your form before sending it.

onSubmit="mForm.pass.value = ''; return true;"

0
 
LVL 16

Expert Comment

by:jaysolomon
ID: 9800195
how are you encrypting your code?
0
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LVL 8

Expert Comment

by:Barry62
ID: 9800386
he's not encrypting his code, just the password that the user enters. :)
0
 
LVL 58

Expert Comment

by:Gary
ID: 9800928
<script language=javascript>
function submitform(){
document.myform2.user.value=document.myform1.user.value
document.myform2.enc.value=document.myform1.enc.value
myform2.submit()
}
</script>

<form name=myform1>
<input type=text name=user>
<input type=text name=pass>
<input type=text name=enc>
<input type=button onclick=submitform()>
</form>
<form name=myform2 action=page2.asp>
<input type=hidden name=user>
<input type=hidden name=enc>
<input type=button onclick=submitform()>
</form>
0
 
LVL 11

Expert Comment

by:Zontar
ID: 9801258
Depending on JS to do encryption is not a very good idea IMO.

If you need that much security, consider using SSL.

Otherwise, many serverside programming languages and databases provide ways to encrypt/decrypt passwords.

E.g. in PHP/MySQL:

$user = $_POST["username"];
$pass = $_POST["password"];

$q = "SELECT userid FROM users WHERE username='$user' AND password=MD5('$pass')";
if(mysql_num_rows( mysql_query($q) ) == 1)
  $login_status = TRUE;
0
 
LVL 31

Accepted Solution

by:
GwynforWeb earned 500 total points
ID: 9801483
Disable the fields before submission. I have demonstrated for 'get' but it works for post as well. (google is great for seeing what gets sent)

<form onSubmit="t3.disabled=true;t4.disabled=true; return true" action="http://google.com">
<input type="text" name="t1" >
<input type="text" name="t2">
<input type="text" name="t3">
<input type="text" name="t4">
<input type="submit"" value="submit">
<form>
0
 
LVL 31

Expert Comment

by:GwynforWeb
ID: 9806687
Thanks, :-)
0

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