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Re: [openpgp] Intent to deprecate: Insecure primitives

Bill Frantz <frantz@pwpconsult.com> Mon, 16 March 2015 16:35 UTC

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Date: Mon, 16 Mar 2015 09:35:55 -0700
From: Bill Frantz <frantz@pwpconsult.com>
To: Derek Atkins <warlord@MIT.EDU>
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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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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.

Cheers - Bill

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