signature verification error from 2020-05-03

[Zenny]

Hi,

I am on voidlinux with the latest texlive package. It was working smoothly
till yesterday. All of the sudden `tlmgr` started giving signature
verification error as follows:

/opt/texlive/2020/bin/x86_64-linux/tlmgr: signature verification error of
> /opt/texlive/2020/tlpkg/texlive.tlpdb.c123338267992f1eaedc17d45585d6f3 from
> http://ftp.acc.umu.se/mirror/CTAN/systems/texlive/tlnet/tlpkg/texlive.tlpdb:
> cryptographic signature verification of
>   /tmp/iz4CbvzOTR/DLOIKh7VlU
> against
>
> http://ftp.acc.umu.se/mirror/CTAN/systems/texlive/tlnet/tlpkg/texlive.tlpdb.sha512.asc
> failed. Output was:
> gpg: Signature made Sat May  2 01:58:00 2020 CEST using RSA key ID 19438C70
> gpg: BAD signature from "TeX Live Distribution <tex-live at tug.org>"
>
> Please try from a different mirror and/or wait a few minutes
> and try again; usually this is because of transient updates.
> If problems persist, feel free to report to texlive at tug.org.
>

The key list shows:

# tlmgr key list
> /opt/texlive/2020/tlpkg/gpg/pubring.gpg
> ---------------------------------------
> pub   2048R/06BAB6BC 2016-03-19
> uid                  TeX Live Distribution <tex-live at tug.org>
> sub   2048R/B001980F 2016-03-19
> sub   2048R/19438C70 2016-03-19 [expires: 2021-07-30]
>

Trying to pull the upstream key gives:

# curl -fsSL
> http://ftp.acc.umu.se/mirror/CTAN/systems/texlive/tlnet/tlpkg/texlive.tlpdb.sha512.asc
> | tlmgr key add -
> tlmgr: key import failed, output:
> gpg: no valid OpenPGP data found.
> gpg: Total number processed: 0
>

Thus, I am stuck as `tlmgr` cannot proceed anything further. Any clue
appreciated.

Cheers and stay safe,
/z

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