Signing message problem with GPG loopback pin-entry option

[Ingo Klöcker]

On Sonntag, 20. Februar 2022 16:25:31 CET Alireza Sadeghpour via Gnupg-users 
wrote:
> I am trying to encrypt and sign a file with gpg and loopback pinentry
> option, with the below command:
> 
> gpg --pinentry-mode=loopback --passphrase ="mypws" \
> --ignore-time-conflict --ignore-valid-from \
> --cipher-algo AES256 --symmetric --ignore-time-conflict \
> --passphrase-file ~/.gnupg/PG/p-enckey --trust-model always -q --batch
> --yes --local-user "UserID" \
> --sign --force-mdc \
> --output /var/psigner/2 \
> /var/psigner/1

Using the options --passphrase *and* --passphrase-file makes no sense.

> however i got the below error message:
> 
> gpg: signing failed: Too much data for IPC layer
> gpg: /var/psigner/1: sign+symmetric failed: Too much data for IPC layer

Could it be that the file ~/.gnupg/PG/p-enckey contains more data than gpg 
allows/supports for a passphrase?

> Can anyone give me advice to solve the problem?

Removing `--passphrase-file ~/.gnupg/PG/p-enckey` from the command line could 
solve your problem.

Regards,
Ingo
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