Problems with apt-key (Illegal instruction (core dumped))

[fog762]

Hi guys,
since yesterday i have problems when i run "sudo apt update", for each repository i get this message: "Unknown error while running apt-key".
When, from the command line, I type this command: "apt-key list" i get this message "Illegal instruction (core dumped)". Same message if type
"apt-key finger" or "apt-key exportall". If type just "apt-key" i get the normal apt-key help screen. As a consequence, the apt update
procedure indicates that all repositories do not have a valid GPG key. I don't know how to solve the problem, could you help me?
My Ubuntu version is:
Distributor ID: Ubuntu
Description: Ubuntu 18.04.4 LTS
Release: 18.04
Codename: bionic

Kernel version is:
4.15.0-96-generic #97-Ubuntu SMP Wed Apr 1 03:25:46 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux

[mIk3_08]

Just try

sudo apt-get update

[CelticWarrior]

Just try

sudo apt-get update

This is exactly what the OP did:

since yesterday i have problems when i run "sudo apt update"

@fog762

Please run the command again and post here the complete error messages in code tags (Go advanced, click "#" and paste inside). We'll troubleshoot from there.

[fog762]

Hello guys,
the problem is generated by the hard disk. The reporitory GPG keys database is corrupt. A hard drive check solved the problem but I suspect that the device will break soon

[CelticWarrior]

It may break soon indeed.
Replace the drive ASAP.