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From: Ingo =?ISO-8859-1?Q?Kl=F6cker?= <kloecker@kde.org>
To: gnupg-users@gnupg.org
Reply-To: gnupg-users@gnupg.org
Subject: Re: Incompatible secret key format between 2.4.4 and 2.2.27?
Date: Sun, 11 Feb 2024 19:08:10 +0100
Message-ID: <6021024.lOV4Wx5bFT@daneel>
MIME-Version: 1.0

On Sonntag, 11. Februar 2024 02:05:52 CET mlist_e9e869bc--- via Gnupg-users 
wrote:
> I'm trying to import a key generated from GPG 2.4.4 to 2.2.27 but
> unsuccessful.
> 
> Upon importing, it returns `gpg: no valid OpenPGP data found.`
> 
> I tried with compliance options but it does nothing.
> 
> Command I used:
> 
> - export: `gpg -a --export-secret-subkey <key_id> | gpg -a -c
> --cipher-algo AES --force-mdc -o <file>`
> - import: `gpg --decrypt -o - keys.sec.asc | gpg --import -`
> 
> What else I can do? I can't update the GPG version because one of my
> import device is an Android phone which stuck at 2.2.27 for quite a long
> time.

Are you sure that the problem isn't the decryption? I checked the code and 
this error message is emitted by the armor/dearmor code. My guess is that the 
decryption fails and therefore outputs nothing and importing nothing results 
exactly in the above error message:
```
$ echo "" | gpg --import -
gpg: no valid OpenPGP data found.
gpg: Total number processed: 0
```

Regards,
Ingo
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