I beg to differ. The fastest way to get people to upgrade is if the
new version works with the old version. There are still many pgp2.x
users who don't upgrade because they then lose the ability to
communicate with other 2.x users.
If PGP Inc had done the right thing and made pgp5.x backwards
compatible with 2.x, everyone would be using 5.x by now.
Your proposal just perpetuates the problem.
The GNU ethic about not using IDEA, is counterproductive; that just
means more poeple use IDEA, because they can't upgrade because it
won't work if they do.
Adam
Frank Tobin wrote:
> There's more problems than just the algorithms when communicating with 2.x
> Namely, PGP 2.x is not OpenPGP (RFC 2440) compatible. This is key. PGP
> 2.x should really die off; it uses 1) resticted algorithms 2) an obsoleted
> RFC. PGP 5.x is borderline; it's best if 6.x is used.
>
> There will be more OpenPGP implementations coming; trying to keep everyone
> compatible with 2.x and 5.x is silly.
>
> The FSF intends that all users of its software can use it for any purpose,
> even commercial purposes. Putting in IDEA would make it so that
> commercial users could not use GnuPG.
