How To Install ykval-export on CentOS 8

One-liner Install Command

If you are only interested in the installation command, here is a quick answer for you:

sudo yum makecache && sudo yum -y install yubikey-val

sudo dnf makecache && sudo dnf -y install yubikey-val

But if you are interested in the details with step-by-step instructions, the following information will be helpful.

What is ykval-export and How to Install It?

First things first, you will need access to a server or computer running CentOS 8. This guide was written specifically with a server running CentOS 8 in mind, although it should also work on older, supported versions of the operating system.

Also, make sure you are running a regular, non-root user with sudo privileges configured on your server. When you have an account available, log in as your non-root user to begin.

There are several ways to install ykval-export on CentOS 8. You can use (links are clickable):

In the following sections, we will describe each method in detail. You can choose one of them or refer to the recommended one.

Install ykval-export on CentOS 8 using dnf

First, update dnf packages database with dnf by running the next command:

sudo dnf makecache --refresh

After updating database, You can install ykval-export using dnf by running the following command:

sudo dnf -y install yubikey-val

Install ykval-export on CentOS 8 using yum

Because ykval-export is available in CentOS 8’s default repositories, it is possible to install it from these repositories using the yum packaging system.

To begin, update local packages database with yum using the following command.

sudo yum makecache --refresh

Now can install ykval-export package on your server/computer by running the following command:

sudo yum -y install yubikey-val

How to upgrade (update) a single package ykval-export using yum?

To update all the packages available on the system:

yum update

If you want to update a specific package like ykval-export in this example you should use the following command:

yum update yubikey-val

To downgrade a package to an earlier version:

yum downgrade yubikey-val

How to Upgrade ykval-export on CentOS 8 with dnf?

When you run the dnf update, all system packages with available updates are updated. However, if you want to upgrade a single package, then you would have to pass the package name as the argument to the dnf update command.

dnf update yubikey-val

How To remove ykval-export from CentOS 8

To uninstall only the ykval-export package you can execute the following command:

sudo dnf remove yubikey-val

Extra info and code examples

YubiKeys are USB tokens that act like keyboards and generate one-time passwords. This package contains a server written in PHP for use with Apache to validate YubiKey OTPs. The architecture is that a set of validation servers manage the token counters and respond to OTP requests from clients, and utilize a set of back-end YubiKey Key Storage Module (KSM) servers to perform the actual AES key decryption. The protocols are openly published. There are two implementations of the KSM available: yubikey-ksm (PHP, secrets on disk in database) and yhsm-yubikey-ksm (Python, for use with secrets protected by the YubiHSM hardware). Sometimes the KSM runs on another server than the validation server, but it is possible to run both on the same machine. After installing and configuring this package you will have a YubiKey validation server up and running via Apache.

Conclusion

You now have a full guide on how to install ykval-export using dnf and yum package managers. Also, we showed how to update manually as a single package and different ways to uninstall the ykval-export from CentOS 8.

See also: