I am running Debian 5.10.0-kali7-amd64 amd compiling kernel linux-5.12-6 when I run
gpg --keyserver subkeys.pgp.net --recv-keys xxxxxxxx....
command
it gives
gpg: keyserver receive failed: No route to host
and when I run
gpg --recv-keys xxxx
it gives following
gpg: key 38DBBDC86092693E: new key but contains no user ID - skipped
gpg: Total number processed: 1
gpg: w/o user IDs: 1
What is above error. on this link it says https://superuser.com/questions/1485213/gpg-cant-import-key-new-key-but-contains-no-user-id-skipped
You are probably using the xxxx.org keyserver, which has an owner approval system it will strip all user IDs unless the owner of the corresponding email address has allowed them to be published.
Or how to verify the kernel
For kernel compiling I am using this tutorial https://www.cyberciti.biz/tips/compiling-linux-kernel-26.html
It also talks about verifying kernel sign with gpg --recv-keys xxxx.... again it also gives
gpg: key 38DBBDC86092693E: new key but contains no user ID - skipped
gpg: Total number processed: 1
gpg: w/o user IDs: 1
how to resolve the above so I get output of gpg --recv-keys xxxxx... something like following
gpg: key xxxx: 7 duplicate signatures removed
gpg: key xxxxx: 172 signatures not checked due to missing keys
gpg: /home/vivek/.gnupg/trustdb.gpg: trustdb created
gpg: key 79BE3E4300411886: public key "Linus Torvalds [email protected]" imported
gpg: no ultimately trusted keys found
gpg: Total number processed: 1
gpg: imported: 1
The instructions for that particular key are given at: https://www.kernel.org/signature.html
I cannot vouch for the security of following those instructions, other than to say that they are hosted on kernel.org and delivered via https.
In case the URL mentioned above breaks (gets moved or deleted), I have the broad strokes of the solution listed below. I've removed the parts that specifically refer to [email protected] who is associated with the key (RSA key ID 38DBBDC86092693E) you mentioned