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Re: [openpgp] Intent to deprecate: Insecure primitives

Derek Atkins <warlord@MIT.EDU> Tue, 17 March 2015 15:04 UTC

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From: Derek Atkins <warlord@MIT.EDU>
To: Bill Frantz <frantz@pwpconsult.com>
References: <r422Ps-1075i-0DF0A0ED5D364ECAABA63F541D9C6A16@Williams-MacBook-Pro.local>
Date: Tue, 17 Mar 2015 11:04:46 -0400
In-Reply-To: <r422Ps-1075i-0DF0A0ED5D364ECAABA63F541D9C6A16@Williams-MacBook-Pro.local> (Bill Frantz's message of "Mon, 16 Mar 2015 09:35:55 -0700")
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Cc: dgil@yahoo-inc.com, Werner Koch <wk@gnupg.org>, openpgp@ietf.org, David Leon Gil <coruus@gmail.com>
Subject: Re: [openpgp] Intent to deprecate: Insecure primitives
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Bill Frantz <frantz@pwpconsult.com> writes:

> On 3/16/15 at 6:51 AM, warlord@MIT.EDU (Derek Atkins) wrote:
>
>>Oh, you expected me to decrypt/re-encrypt my encrypted email as I got it???
>
> For many uses, decrypting from the wire format and re-encrypting in
> the "data at rest" security format makes excellent sense. Having only
> one encryption scheme for long-term storage allows easy (relatively)
> upgrade and helps to ensure that the data is still accessible,
> i.e. the decryption still works. I probably have a bunch of old PGP
> encrypted email I can't read anymore because I don't have the secret
> key, or its passphrase. If that mail had been re-encrypted in a format
> that I decrypt every day, I would still be able to read the
> mail. Encryption that isn't regularly exercised gets rusty.

Show me an MUA that does this, please?  None of the OpenPGP-aware MUAs
I've ever used have this feature, as far as I know.  I suppose I could
go out of my way to replace the encrypted email with a
re-encrypted/plaintext email.

But frankly I'd like my encryption software to just maintain the ability
to decrypt it later.

> Cheers - Bill

-derek
-- 
       Derek Atkins, SB '93 MIT EE, SM '95 MIT Media Laboratory
       Member, MIT Student Information Processing Board  (SIPB)
       URL: http://web.mit.edu/warlord/    PP-ASEL-IA     N1NWH
       warlord@MIT.EDU                        PGP key available

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