Encrypting a javascript variable

[pavanponnapalli]

hi,
I have entered a value in a text box , i have called a javascript function.
There i have written as under:
[ var old=document.fr m.old.value;
old1=crypt([old,key]);
alert(old1); ]

I am not getting any error message in the javascript , neither i am getting the alert message.
if i remove the crypt function line and display alert message as alert(old),
then i am hetting the value of the textbox in that variable. So, i think there is something wrong in my crypt function. So, Could anyone tell me the correct syntax for a crypt function that works perfectly?

Thanks & Regards,
pavan .

[acoder]

Show your crypt function. Note that encrypting something using JavaScript for the purposes of hiding is not foolproof by any means and can be decrypted, sometimes quite easily.

[pavanponnapalli]

hi ,
My entire javascript function is as under .
[code=javascript] function call(frm)
{
var old=document.fr m.old.value;
old1=crypt([old,key]);
alert(old1);
var new1=document.f rm.new1.value;
var new2=document.f rm.new2.value;

if(old=="" || new1=="" || new2=="")
{
alert("Enter values");
return;
}
else
{
if(old!="$old_p assword")
{
alert("You have entered wrong old password!!! Try Again");
return;
}
else
{
if(new1==new2)
{
var url="http://10.202.1.24/shiftscheduler/master?session= $session_id&USE RID=$UID&pass=1 ";
document.frm.ac tion=url;
document.frm.su bmit();
}
else
{
alert("The two new passwords you have entered do not match!!! Enter again!!!");
return;
}
}

}
}[/code]



In the above code $old_password is the already existing password in the database. $old_password is a perl variable. old_password is already encrypted in the database for security reasons. I have caught that encrypted value in the perl variable $old_password, but there is no decrypt function in perl.
So, i want to encrypt the javascript variable old. In the above code the javascript encrypt function crypt() is not working. So, please tell me a way to encrypt my javascript variable.

Thanks & Regards,
pavan

[acoder]

You will have to use the same encryption algorithm used for encrypting the password in Perl. I suggest that you make this check in Perl rather than JavaScript. You can make an Ajax request if you want to avoid page reload.