1. Encoding for Trapped Mods
Here's what I wanna do:
Create a simple txt file with one line
of text + numbers, i.e., HD85739DJA9273JKS,
which is hiding a license code.
Protect the file so that if a change is
made to it, a checksum will fail and I'll
know that tampering has been tried.
Anybody have good ideas in this regard?
I'm thinking along the lines of the following:
1. Convert the license code (say '109') to hex.
2. Add the ASCII codes of the digits (6D)
for a checksum item.
3. Create the line of text: 6DXGLP122, where
6D is the hex of 109, and 122 is the checksum,
both of which are separated by a non-hex
character sequence of letters (XGLP).
So basically, I would parse out the 6D and the 122
and make sure they match. Would I also want to
checksum the separater text, as well? That's a thought.
Anyway, any and all ideas appreciated!
< |<
2. Re: Encoding for Trapped Mods
I have already created something of this effect.
I simply haven't decided how to distribute it and keep
the checksum to where it isn't easily cracked.
Lucius L. Hilley III
lhilley at cdc.net lucius at ComputerCafeUSA.com
+----------+--------------+--------------+----------+
| Hollow | ICQ: 9638898 | AIM: LLHIII | Computer |
| Horse +--------------+--------------+ Cafe' |
| Software | http://www.cdc.net/~lhilley | USA |
+----------+-------+---------------------+----------+
| http://www.ComputerCafeUSA.com |
+--------------------------------+
----- Original Message -----
From: C. K. Lester <cklester at TICNET.COM>
To: <EUPHORIA at LISTSERV.MUOHIO.EDU>
Sent: Tuesday, October 12, 1999 12:00 PM
Subject: Encoding for Trapped Mods
> ---------------------- Information from the mail
header -----------------------
> Sender: Euphoria Programming for MS-DOS
<EUPHORIA at LISTSERV.MUOHIO.EDU>
> Poster: "C. K. Lester" <cklester at TICNET.COM>
> Subject: Encoding for Trapped Mods
> --------------------------------------------------------------------------
-----
>
> Here's what I wanna do:
>
> Create a simple txt file with one line
> of text + numbers, i.e., HD85739DJA9273JKS,
> which is hiding a license code.
>
> Protect the file so that if a change is
> made to it, a checksum will fail and I'll
> know that tampering has been tried.
>
> Anybody have good ideas in this regard?
>
> I'm thinking along the lines of the following:
>
> 1. Convert the license code (say '109') to hex.
> 2. Add the ASCII codes of the digits (6D)
> for a checksum item.
> 3. Create the line of text: 6DXGLP122, where
> 6D is the hex of 109, and 122 is the checksum,
> both of which are separated by a non-hex
> character sequence of letters (XGLP).
>
> So basically, I would parse out the 6D and the 122
> and make sure they match. Would I also want to
> checksum the separater text, as well? That's a thought.
>
> Anyway, any and all ideas appreciated!
>
> < |<
>
