Shellpki is a very tiny and easy PKI in command lines.
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README.md

ShellPKI

This script is a wrapper around OpenSSL to manage a small PKI.

Install

Debian

useradd shellpki --system -M --home-dir /etc/shellpki --shell /usr/sbin/nologin
mkdir /etc/shellpki
install -m 0640 openssl.cnf /etc/shellpki/
install -m 0755 shellpki /usr/local/sbin/shellpki
chown -R shellpki: /etc/shellpki
# visudo -f /etc/sudoers.d/shellpki
%shellpki ALL = (root) /usr/local/sbin/shellpki

OpenBSD

useradd -r 1..1000 -d /etc/shellpki -s /sbin/nologin _shellpki
mkdir /etc/shellpki
install -m 0640 openssl.cnf /etc/shellpki/
install -m 0755 shellpki /usr/local/sbin/shellpki
chown -R _shellpki:_shellpki /etc/shellpki
# visudo -f /etc/sudoers
%_shellpki ALL = (root) /usr/local/sbin/shellpki

OpenVPN

If you want auto-generation of the OpenVPN config file in /etc/shellpki/openvpn, you need to create a template file in /etc/shellpki/ovpn.conf, eg. :

client
dev tun
tls-client
proto udp

remote ovpn.example.com 1194

persist-key
persist-tun

cipher AES-256-CBC

Usage

Usage: ./shellpki <subcommand> [options] [CommonName]

Initialize PKI (create CA key and self-signed cert) :

   ./shellpki init <commonName_for_CA>

Create a client cert with key and CSR directly generated on server (use -p for set a password on client key) :

    ./shellpki create [-p] <commonName>

Create a client cert from a CSR (doesn't need key) :

    ./shellpki create -f <path>

Revoke a client cert with is commonName (CN) :

    ./shellpki revoke <commonName>

List all actually valid commonName (CN) :

    ./shellpki list

License

ShellPKI is an Evolix project and is licensed under the MIT license.