can not encrypt (but decrypt) dues to missing pub key

[Matthias Apitz]

Hello,

I encounter in my server the following situation: I can decrypt files
but not encrypting any file:

$ gpg2 --version
gpg (GnuPG) 2.1.19
libgcrypt 1.7.6
Copyright (C) 2017 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <https://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.

Home: /home/guru/.gnupg-v2.1.19
Supported algorithms:
Pubkey: RSA, ELG, DSA, ECDH, ECDSA, EDDSA
Cipher: IDEA, 3DES, CAST5, BLOWFISH, AES, AES192, AES256, TWOFISH,
        CAMELLIA128, CAMELLIA192, CAMELLIA256
Hash: SHA1, RIPEMD160, SHA256, SHA384, SHA512, SHA224
Compression: Uncompressed, ZIP, ZLIB, BZIP2

$ gpg -d sybase.gpg 
gpg: encrypted with 2048-bit RSA key, ID 2802AB9D46B97090, created 2018-03-11
      "guru at unixarea.de"
... (clear text deleted) ....

$ gpg2 -r guru at unixarea.de -ea test 
gpg: guru at unixarea.de: skipped: No public key
gpg: test: encryption failed: No public key

It seems that there is the file pubring.gpg missing:

$ ls -ltr /home/guru/.gnupg-v2.1.19
total 36
-rw-------  1 guru  wheel    32 11 mar.   2018 pubring.kbx~
-rw-r--r--  1 guru  wheel  1396 11 mar.   2018 pubring.kbx
drwx------  2 guru  wheel   512 11 mar.   2018 private-keys-v1.d
drwx------  2 guru  wheel   512 11 mar.   2018 openpgp-revocs.d
-rw-r-----  1 guru  wheel   676 28 mar.   2018 sshcontrol
srwx------  1 guru  wheel     0 11 abr.   2018 S.scdaemon
-rw-r--r--  1 guru  wheel     7 11 abr.   2018 reader_0.status
-rw-r--r--  1 guru  wheel    37  1 ene.   2019 gpg-agent.conf
-rw-------  1 guru  wheel   600  6 sept.  2019 random_seed
srwx------  1 guru  wheel     0  1 abr.  15:40 S.gpg-agent
srwx------  1 guru  wheel     0  1 abr.  15:40 S.gpg-agent.extra
srwx------  1 guru  wheel     0  1 abr.  15:40 S.gpg-agent.browser
srwx------  1 guru  wheel     0  1 abr.  15:40 S.gpg-agent.ssh
-rw-------  1 guru  wheel  1280  1 abr.  16:17 trustdb.gpg

Can I re-create the missing information/file somehow?

Thanks

	matthias

-- 
Matthias Apitz, ✉ guru at unixarea.de, http://www.unixarea.de/ +49-176-38902045
Public GnuPG key: http://www.unixarea.de/key.pub