[Cryptography] What is going on with TrueCrypt?

[Sidney Markowitz]

Sidney Markowitz wrote, On 1/06/14 1:08 pm:
> Here is a link to a summary of Red Hat's legal people's reasons why they could
> not make use of TC with the TC license.

That link I provided discussed TrueCrypt License Version 2.5 and is a bit out
if date. Version 2.6 of the license addressed some (but not all?) of Red Hat's
concerns, the latest version before this recent change was Version 3.0, and
with the recent announcement the license was change to Version 3.1

The TLDR; of the license is that you can modify and distribute their code as
long as your changes and your program that includes their code is freely
source distributable. That would make it FLOSS except for the likely devils in
the details.

What I haven't seen is something that says that the new Version 3.1 license
can be used for the TrueCrypt 7.1.a source code, which is the version that a
fork would have to be based on. Has anyone noticed a reference to a statement
that would allow that?

A diff between the two license versions shows that the only change between 3.0
and 3.1 is the removal of the requirement to acknowledge TrueCrypt, which is
the clause that I thought might be similar to the advertising clause in the
original BSD license that is incompatible with GPL.

The new version 3.1 license that is part of the last TrueCrypt 7.2 is here:
https://raw.githubusercontent.com/warewolf/truecrypt/7.2/License.txt

The version 3.0 license:
https://raw.githubusercontent.com/warewolf/truecrypt/master/License.txt

Version 3.0 and 3.1 still contain a clause that requires your code to be
distributed at no fee or for your reasonable copying costs. As I understand it
that is incompatible with GPL which allows you to charge anything you want
while not preventing anyone else from giving away free copies of what you are
selling. Economically that may not be very different, but it could prevent you
from distributing a fork under GPL.

 Sidney Markowitz
 http://sidney.com