r15ch13

#!/usr/bin/env bash

shopt -s nullglob
lastgroup=""
for g in `find /sys/kernel/iommu_groups/* -maxdepth 0 -type d | sort -V`; do
    for d in $g/devices/*; do
        if [ "${g##*/}" != "$lastgroup" ]; then
            echo -en "Group ${g##*/}:\t"
        else
            echo -en "\t\t"

hoffa

PKI for busy people

Public-key infrastructure (PKI) is an umbrella term for everything that has to do with keys and certificates.

This is a quick overview of the important stuff.

Public-key cryptography

Public-key cryptography involves a key pair: a public key and a private key. Each entity has their own. The public key can be shared around, the private key is secret.