When downloading utilities outside the Mac App Store, users must exercise caution:
Ensure the software is "Notarized" by Apple to prevent the execution of malicious code. Smart Disk Image Utilities 2 for Mac Free Download
Users can download a "Lite" version or a trial from the Mac App Store, which provides basic creation tools while gating advanced encryption or batch features behind a one-time purchase. When downloading utilities outside the Mac App Store,
Implementation of AES-128 and AES-256 encryption for securing sensitive data within images. Acquisition and "Free" Availability Smart Disk Image Utilities 2 for Mac Free Download