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Date:   Thu, 6 Aug 2020 07:40:56 +0200
From:   Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To:     David Niklas <Hgntkwis@vfemail.net>
Cc:     Randy Dunlap <rdunlap@infradead.org>,
        LKML <linux-kernel@vger.kernel.org>
Subject: Re: Is anyone else getting a bad signature from kernel.org's 5.8
 sources+Greg's sign?
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On Wed, Aug 05, 2020 at 11:20:38PM -0400, David Niklas wrote:
> On Wed, 5 Aug 2020 18:36:08 -0700
> Randy Dunlap <rdunlap@infradead.org> wrote:
> 
> > On 8/5/20 5:59 PM, David Niklas wrote:
> > > Hello,
> > > I downloaded the kernel sources from kernel.org using curl, then
> > > opera, and finally lynx (to rule out an html parsing bug). I did the
> > > same with the sign and I keep getting:
> > > 
> > > %  gpg2 --verify linux-5.8.tar.sign linux-5.8.tar.xz
> > > gpg: Signature made Mon Aug  3 00:19:13 2020 EDT
> > > gpg:                using RSA key
> > > 647F28654894E3BD457199BE38DBBDC86092693E gpg: BAD signature from
> > > "Greg Kroah-Hartman <gregkh@linuxfoundation.org>" [unknown]
> > > 
> > > I did refresh all the keys just in case.
> > > I believe this is important so I'm addressing this to the signer and
> > > only CC'ing the list.
> > > 
> > > If I'm made some simple mistake, feel free to send SIG666 to my
> > > terminal. I did re-read the man page just in case.  
> > 
> > It works successfully for me.
> > 
> > 
> > from https://www.kernel.org/category/signatures.html::
> > 
> > 
> > If you get "BAD signature"
> > 
> > If at any time you see "BAD signature" output from "gpg2 --verify",
> > please first check the following first:
> > 
> >     Make sure that you are verifying the signature against the .tar
> > version of the archive, not the compressed (.tar.xz) version. Make sure
> > the the downloaded file is correct and not truncated or otherwise
> > corrupted.
> > 
> > If you repeatedly get the same "BAD signature" output, please email
> > helpdesk@kernel.org, so we can investigate the problem.
> > 
> > 
> > 
> 
> Many thanks. I've never seen a signature done that way before, but I
> understand why you would do it that way.

That means other projects need to change as well :)

And you are not alone, this comes up every release, no problems.

greg k-h