Encryption

Intro

hdiutil is a command-line utility on macOS that allows users to create, manipulate, and convert disk images. Disk images are virtual disk files that can contain the entire file system structure, including files, folders, and metadata. hdiutil provides a variety of functions related to disk images, and it’s a powerful tool for managing disk-related tasks on a Mac.

Basic Usage

create

echo -n "geheim" |hdiutil create -encryption -stdinpass -size 10m -volname encdata test.dmg -fs HFS+J

mount ro

echo -n "geheim" |hdiutil mount -stdinpass -readonly test.dmg

mount rw

echo -n "geheim" |hdiutil mount -stdinpass test.dmg

create, strong, mount

echo -n "geheim" |hdiutil create -encryption AES-256 -stdinpass -attach -volname encdata -size 10m test.dmg -fs HFS+J

unmount

hdiutil unmount /Volumes/encdata