Nitrokey App is available for RedHat and CentOS in a separate repository maintained by Igor Gnatenko.

Please add the repository to your sources and install the Nitrokey App via the package management by typing these commands in a shell:

$ sudo yum-config-manager --add-repo
$ sudo yum install epel-release # Enables the EPEL Repositories (needed for hidapi).
$ sudo yum install nitrokey-app