Error with GPG key. Apt update fails

[J-C-P]

Hi,

When I follow the installation procedure on debian trixie, I get this error at the time of apt update.

Err:3 https://repo.openbytes.ie/patchman/debian trixie InRelease
  Sub-process /usr/bin/sqv returned an error code (1), error message is: Missing key 78FEEC0FD3A58EBED8BA1740892EB6CAA920B3CB, which is needed to verify signature.
Warning: OpenPGP signature verification failed: https://repo.openbytes.ie/patchman/debian trixie InRelease: Sub-process /usr/bin/sqv returned an error code (1), error message is: Missing key 78FEEC0FD3A58EBED8BA1740892EB6CAA920B3CB, which is needed to verify signature.
Error: The repository 'https://repo.openbytes.ie/patchman/debian trixie InRelease' is not signed.

My patchman.list looks like this
deb [signed-by=/usr/share/keyrings/openbytes.gpg] https://repo.openbytes.ie/patchman/debian trixie main

My /usr/share/keyrings/openbytes.gpg is present and a gpg --list-packets /usr/share/keyrings/openbytes.gpg looks like this

# off=0 ctb=99 tag=6 hlen=3 plen=525
:public key packet:
        version 4, algo 1, created 1378788852, expires 0
        pkey[0]: [4096 bits]
        pkey[1]: [17 bits]
        keyid: D30FB02B0412F522
# off=528 ctb=b4 tag=13 hlen=2 plen=35
:user ID packet: "Marcus Furlong <furlongm@gmail.com>"
# off=565 ctb=89 tag=2 hlen=3 plen=591
:signature packet: algo 1, keyid D30FB02B0412F522
        version 4, created 1777997205, md5len 0, sigclass 0x13
        digest algo 10, begin of digest 59 ce
        hashed subpkt 27 len 1 (key flags: 03)
        hashed subpkt 30 len 1 (features: 01)
        hashed subpkt 23 len 1 (keyserver preferences: 80)
        hashed subpkt 33 len 21 (issuer fpr v4 198AF25376E7ACD8E123B0CDD30FB02B0412F522)
        hashed subpkt 2 len 4 (sig created 2026-05-05)
        hashed subpkt 11 len 5 (pref-sym-algos: 9 8 7 3 2)
        hashed subpkt 21 len 4 (pref-hash-algos: 8 9 10 11)
        hashed subpkt 22 len 4 (pref-zip-algos: 2 3 1 0)
        subpkt 16 len 8 (issuer key ID D30FB02B0412F522)
        data: [4096 bits]
# off=1159 ctb=b9 tag=14 hlen=3 plen=525
:public sub key packet:
        version 4, algo 1, created 1378788852, expires 0
        pkey[0]: [4096 bits]
        pkey[1]: [17 bits]
        keyid: 3972AFB5D2B04246
# off=1687 ctb=89 tag=2 hlen=3 plen=566
:signature packet: algo 1, keyid D30FB02B0412F522
        version 4, created 1778078367, md5len 0, sigclass 0x18
        digest algo 8, begin of digest 61 11
        hashed subpkt 27 len 1 (key flags: 0C)
        hashed subpkt 33 len 21 (issuer fpr v4 198AF25376E7ACD8E123B0CDD30FB02B0412F522)
        hashed subpkt 2 len 4 (sig created 2026-05-06)
        subpkt 16 len 8 (issuer key ID D30FB02B0412F522)
        data: [4096 bits]
# off=2256 ctb=b9 tag=14 hlen=3 plen=525
:public sub key packet:
        version 4, algo 1, created 1423112833, expires 0
        pkey[0]: [4096 bits]
        pkey[1]: [17 bits]
        keyid: 551582C0FCAAD24A
# off=2784 ctb=89 tag=2 hlen=3 plen=1109
:signature packet: algo 1, keyid D30FB02B0412F522
        version 4, created 1778078290, md5len 0, sigclass 0x18
        digest algo 8, begin of digest 5c 22
        hashed subpkt 27 len 1 (key flags: 02)
        hashed subpkt 33 len 21 (issuer fpr v4 198AF25376E7ACD8E123B0CDD30FB02B0412F522)
        hashed subpkt 2 len 4 (sig created 2026-05-06)
        subpkt 32 len 540 (signature: v4, class 0x19, algo 1, digest algo 2)
        subpkt 16 len 8 (issuer key ID D30FB02B0412F522)
        data: [4093 bits]

Any advice would be veru much appreciated :-)

Thanks a lot in advance

[furlongm]

Try curl -sS https://repo.openbytes.ie/openbytes-1.gpg > /usr/share/keyrings/openbytes.gpg and see if that fixes it?

[J-C-P]

It fixes the issue. Thanks a lot.
I will adapt my deployment documentation. :-)

Or do you plan to apply the "standard" GPG key to the Debian repository ?