Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > linux.debian.user > #226410

Re: Linux-Fan's bad signatures

Show all headers | View raw

[Multipart message — attachments visible in raw view] - view raw

Teemu Likonen writes:

> * 2020-08-22 00:17:19+02, Linux-Fan wrote:
>
> > The copy I receive from the list does not verify correctly here,
> > either.
>
> The content between MIME separator lines are signed. The separators
> itself are not part of the signature and also the last empty line is not
> part of the signature.

[...]

> So if the signature is in "signature.asc" and the content between the
> separator lines are in file "content.txt" this command should verify it:
>
>     gpg --verify signature.asc content.txt
>
> It seems that the signatures are made with "gpg --textmode" so that it
> doesn't matter if the content has LF or CR + LF newlines.
>
> Your "sent" and "received" messages even have different MIME part
> headers and encoding. At least those things change after the signature
> is made. See the attached "diff -u" output. But I can't verify any of
> your messages even if I manually edit the MIME parts and try different
> things.

Thank you for sharing this analysis. I was trying to figure it out but thought
the signature was only over the text and not over the headers.

I cannot get it to verify with manual editing, either. Yet somehow, my mail
client's `mimegpg` command can do it, given the unmangled .eml file -- the one
I had sent to the list also got changed during the transfer.
Attached is a compressed version in the hope that it will come across
without being changed. The file's sha256sum should be as follows:

04076b5cc68367f1bfda394ba32416891ffa1800b8f7214a04cb2fc4efa21004  sent.eml
ac2a25bc54417db2b62d883b9ef31a93d25e9afc113cd9f9d555d87d2720baa8  sent.eml.xz

The source code is available, I will just need to find some time to analyze
what it does exactly. Maybe I should ask on the e-mail client's maling list,
too...

Thanks
Linux-Fan

Back to linux.debian.user | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread

Thread

Encrypt files on Linux, decrypt on Windows local10 <local10@tutanota.com> - 2020-08-21 19:50 +0200
  Re: Encrypt files on Linux, decrypt on Windows john doe <johndoe65534@mail.com> - 2020-08-21 20:20 +0200
  Re: Encrypt files on Linux, decrypt on Windows Linux-Fan <Ma_Sys.ma@web.de> - 2020-08-21 20:30 +0200
    Re: Encrypt files on Linux, decrypt on Windows David Christensen <dpchrist@holgerdanske.com> - 2020-08-21 21:20 +0200
      Re: Encrypt files on Linux, decrypt on Windows john doe <johndoe65534@mail.com> - 2020-08-21 21:20 +0200
        Re: Encrypt files on Linux, decrypt on Windows Linux-Fan <Ma_Sys.ma@web.de> - 2020-08-21 22:00 +0200
    Re: Encrypt files on Linux, decrypt on Windows Teemu Likonen <tlikonen@iki.fi> - 2020-08-21 22:40 +0200
      [OT] Linux-Fan's bad signatures (Re: Encrypt files on Linux,          decrypt on Windows) Linux-Fan <Ma_Sys.ma@web.de> - 2020-08-22 00:20 +0200
        Re: Linux-Fan's bad signatures Teemu Likonen <tlikonen@iki.fi> - 2020-08-22 09:20 +0200
          Re: Linux-Fan's bad signatures Linux-Fan <Ma_Sys.ma@web.de> - 2020-08-22 12:50 +0200
        Signing emails, was Re: General-Purpose Server for Debian Stable David Wright <deblis@lionunicorn.co.uk> - 2020-10-02 05:30 +0200
  Re: Encrypt files on Linux, decrypt on Windows Paul Johnson <baloo@ursamundi.org> - 2020-08-21 20:40 +0200
    Re: Encrypt files on Linux, decrypt on Windows Charles Curley <charlescurley@charlescurley.com> - 2020-08-21 21:10 +0200
      Re: Encrypt files on Linux, decrypt on Windows Marek Mosiewicz <marek.mosiewicz@jotel.com.pl> - 2020-08-23 11:30 +0200
        Re: Encrypt files on Linux, decrypt on Windows <tomas@tuxteam.de> - 2020-08-23 11:40 +0200
      Re: Encrypt files on Linux, decrypt on Windows Andrei POPESCU <andreimpopescu@gmail.com> - 2020-08-23 13:10 +0200
        Re: Encrypt files on Linux, decrypt on Windows Charles Curley <charlescurley@charlescurley.com> - 2020-08-23 16:40 +0200
        Signal [Was:] Re: Encrypt files on Linux, decrypt on Windows Celejar <celejar@gmail.com> - 2020-08-25 20:20 +0200
          Re: Signal [Was:] Re: Encrypt files on Linux, decrypt on Windows Andrei POPESCU <andreimpopescu@gmail.com> - 2020-08-26 08:30 +0200
            Re: Signal [Was:] Re: Encrypt files on Linux, decrypt on Windows Celejar <celejar@gmail.com> - 2020-08-26 14:10 +0200
  Re: Encrypt files on Linux, decrypt on Windows Matthew Graybosch <hello@matthewgraybosch.com> - 2020-08-21 20:50 +0200
    Re: Encrypt files on Linux, decrypt on Windows <tomas@tuxteam.de> - 2020-08-21 22:00 +0200
      Re: Encrypt files on Linux, decrypt on Windows Matthew Graybosch <hello@matthewgraybosch.com> - 2020-08-21 22:20 +0200
        Re: Encrypt files on Linux, decrypt on Windows rhkramer@gmail.com - 2020-08-22 02:20 +0200
          Re: Encrypt files on Linux, decrypt on Windows Matthew Graybosch <hello@matthewgraybosch.com> - 2020-08-22 03:30 +0200
            Re: Encrypt files on Linux, decrypt on Windows <tomas@tuxteam.de> - 2020-08-22 09:40 +0200
              Re: Encrypt files on Linux, decrypt on Windows Matthew Graybosch <hello@matthewgraybosch.com> - 2020-08-23 19:10 +0200
          Re: Encrypt files on Linux, decrypt on Windows Jonathan Dowland <jon+debian-user@dow.land> - 2020-08-26 11:40 +0200
            Re: Encrypt files on Linux, decrypt on Windows Hornet <hornetmadness@gmail.com> - 2020-08-29 15:40 +0200
  Re: Encrypt files on Linux, decrypt on Windows Teemu Likonen <tlikonen@iki.fi> - 2020-08-21 21:10 +0200
    Re: Encrypt files on Linux, decrypt on Windows Teemu Likonen <tlikonen@iki.fi> - 2020-08-21 21:20 +0200
      Re: Encrypt files on Linux, decrypt on Windows David Christensen <dpchrist@holgerdanske.com> - 2020-08-21 21:30 +0200
  Re: Encrypt files on Linux, decrypt on Windows David Christensen <dpchrist@holgerdanske.com> - 2020-08-21 21:20 +0200
  Re: Encrypt files on Linux, decrypt on Windows Hans <hans.ullrich@loop.de> - 2020-08-21 22:30 +0200
    Re: Encrypt files on Linux, decrypt on Windows Hans <hans.ullrich@loop.de> - 2020-08-21 22:40 +0200
  Re: Encrypt files on Linux, decrypt on Windows Andrew McGlashan <andrew.mcglashan@affinityvision.com.au> - 2020-08-22 03:10 +0200
  Re: Encrypt files on Linux, decrypt on Windows deloptes <deloptes@gmail.com> - 2020-08-22 09:50 +0200
  Re: Encrypt files on Linux, decrypt on Windows mick crane <mick.crane@gmail.com> - 2020-08-22 12:20 +0200
    "What's wrong with...?" Teemu Likonen <tlikonen@iki.fi> - 2020-08-22 20:30 +0200
      Re: "What's wrong with...?" Dan Ritter <dsr@randomstring.org> - 2020-08-22 20:40 +0200
      Re: "What's wrong with...?" mick crane <mick.crane@gmail.com> - 2020-08-23 08:50 +0200
        Re: "What's wrong with...?" Jonathan Dowland <jon+debian-user@dow.land> - 2020-08-26 11:30 +0200

csiph-web