Re: Simplest Dongle Method? Making a file uncopyable on CD?
Re: Simplest Dongle Method? Making a file uncopyable on CD?
- Subject: Re: Simplest Dongle Method? Making a file uncopyable on CD?
- From: "Pierce T. Wetter III" <email@hidden>
- Date: Tue, 27 Jun 2006 10:20:42 -0700
On Jun 27, 2006, at 8:41 AM, Nicko van Someren wrote:
On 27 Jun 2006, at 00:33, Scott Ribe wrote:
Most of our customers are
'power' users in broadcast and film, very honest, and the
majority acquire latest HW/SW upgrades on a very regular basis.
So then, why waste your time and inconvenience your users?
Absolutely. As mentioned elsewhere, bits are inherently copyable.
There are some fairly effective copy protection systems which
basically encrypt the majority of the application and decrypt it on
the fly using a key held in a USB dongle, but if your users are
mostly honest and mostly want to run up to date versions of the
application then I would hazard that your biggest risk is going to
be people running multiple copies across an office.
There have been endless threads on this list about copy protection
and how to make license keys. My favourite is to use digitally
signed messages using public key crypto but you should look on the
archives for details.
The simplest method I know is Pace: http://www.paceap.com
They support a selectable level of security from simple serial
numbers all the way up through USB dongles. All pretty much turnkey:
you wrap your resulting application with their tool and its protected.
Their USB dongle is unique in that it can protect multiple
applications/modules with one dongle, and those licenses can be moved
around between multiple dongles. So licenses can follow the user
instead of the computer, which makes the dongle actually more useful
IMHO then having to type the same serial number into all of my
computers.
YMMV.
Pierce
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