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Date:   Fri, 18 Oct 2019 12:03:43 -0400
From:   Konstantin Ryabitsev <konstantin@linuxfoundation.org>
To:     Santiago Torres Arias <santiago@nyu.edu>
Cc:     Vegard Nossum <vegard.nossum@oracle.com>, Willy Tarreau <w@1wt.eu>,
        workflows@vger.kernel.org, Git Mailing List <git@vger.kernel.org>,
        LKML <linux-kernel@vger.kernel.org>, Eric Wong <e@80x24.org>
Subject: Re: email as a bona fide git transport
Message-ID: <20191018160343.GB25456@chatter.i7.local>
Mail-Followup-To: Santiago Torres Arias <santiago@nyu.edu>,
        Vegard Nossum <vegard.nossum@oracle.com>, Willy Tarreau <w@1wt.eu>,
        workflows@vger.kernel.org, Git Mailing List <git@vger.kernel.org>,
        LKML <linux-kernel@vger.kernel.org>, Eric Wong <e@80x24.org>
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On Fri, Oct 18, 2019 at 11:54:09AM -0400, Santiago Torres Arias wrote:
>> Seeing how large this signature is, I have to admit that I am partial to
>> Konstantin's suggestion of using minisign. This seems like something
>> that could be added to git as an alternative to gpg without too much
>> trouble, I think.
>
>I wonder how big the pgp payload would be with ed25519 as the underlying
>algorithm. AFAICT, the payload of a minisign signature vs a signature
>packet have almost the same fields...

It's smaller, but it's not a one-liner. Here's a comparison using 
ED25519 keys of the same length:

minisign:

RWQ4kF9UdFgeSt3LqnS3WnrLlx2EnuIFW7euw5JnLUHY/79ipftmj7A2ug7FiR2WmnFNoSacWr7llBuyInVmRL/VRovj1LFtvA0=

pgp:

-----BEGIN PGP SIGNATURE-----

iHUEARYIAB0WIQR2vl2yUnHhSB5njDW2xBzjVmSZbAUCXaniFAAKCRC2xBzjVmSZ
bHA5AP46sSPFJfL2tbXwswvj0v2DjLAQ9doxl9bfj9iPZu+3qwEAw5qAMbjw9teL
L7+NbJ0WVniDWTgt+5ruQ2V9vyfYxAc=
=B/St
-----END PGP SIGNATURE-----

-K