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Re: [openpgp] Intent to deprecate: Insecure primitives

David Leon Gil <coruus@gmail.com> Sat, 14 March 2015 04:55 UTC

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From: David Leon Gil <coruus@gmail.com>
Date: Fri, 13 Mar 2015 21:54:36 -0700
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To: Falcon Darkstar Momot <falcon@iridiumlinux.org>
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Subject: Re: [openpgp] Intent to deprecate: Insecure primitives
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On Fri, Mar 13, 2015 at 6:30 PM, Falcon Darkstar Momot
<falcon@iridiumlinux.org> wrote:
> Yes, I can get behind that.  Make it so!  Users should be presented with
> secure defaults and not given the opportunity to unknowingly decrease
> security.  Deprecating lower-security but equivalently performant
> algorithms is especially commendable.
>
> That said, archived encrypted data may require decryption support well
> into the future.  OpenPGP-encrypted data is not ephemeral like
> TLS-encrypted data.

I agree: But note that it's possible to run, for example, programs
written for the Symbolics Lisp machine (c. 1982) on your Macbook Pro
today: https://github.com/ynniv/opengenera

And older versions of GnuPG are certainly still buildable! (As, I
anticipate, older versions of any extension will be.)

W.r.t. long-term storage of messages, however, I tend to think that
storing them in their wire format is exactly the wrong thing to do. If
you don't discard wire-format messages, you don't get PFS, even using
ephemeral-static ECDH.

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