Serial numbers (was Re: Text file encryption)
Serial numbers (was Re: Text file encryption)
- Subject: Serial numbers (was Re: Text file encryption)
- From: Andrew Merenbach <email@hidden>
- Date: Mon, 16 Sep 2002 21:55:12 -0700
I am aware that this topic has been done quite a bit on this list (come
to think of it, I may have even started a thread on this myself awhile
back), but a few more ideas have floated by since then, and, as a
release date for my program draws near, I am starting to work on a
registration system again.
First off, I'm really beginning to think that no quick-and-effective
algorithm I could code is truly safe from hacking. But how about
built-in encryption functions? What if we used OpenSSL to do some sort
of encryption on-the-fly? Or perhaps even the CDSA framework? Is this
at all feasible? (If so, which should I choose--OpenSSL, or CDSA?) If
we used such frameworks, we could even save a special encrypted
registration-data file in the preferences folder (or simply some
encrypted strings in the program's regular preferences file).
Might OpenSSL or CDSA work for this purpose? If so, how would one go
about it?
Take care,
Andrew Merenbach
On Monday, September 16, 2002, at 10:39 AM,
email@hidden wrote:
Message: 5
Date: Mon, 16 Sep 2002 09:25:57 -0700
Subject: Re: Text file encryption
Cc: David Remahl <email@hidden>, Cocoa-Dev Apple
<email@hidden>
To: Jeremy Dronfield <email@hidden>
From: Paul Collins <email@hidden>
If you still don't want to use SSL, another option is the CDSA. The
entire CDSA is complex, but there is OS X sample code for encrypting a
file just as you are doing. And you don't need to install anything -
it's all there on X. If you think you want it, let me know and I'll
see
if I can dig up that sample code. "The CDSA code is used by MacOSX
features such as Keychain and URL Access for protection of login data."
http://developer.apple.com/darwin/projects/cdsa/
Paul Collins
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