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Joe T. Sylve, Ph.D.

Digital Forensic Researcher and Educator

Joe T. Sylve, Ph.D. – Blog

Series

APFS Internals

An 18-part deep dive into the Apple File System covering on-disk structures, B-Trees, encryption, and more.

View the series : APFS Internals

Posts (Page 1 of 3)

Fusion Containers

As we discussed in an earlier post, Apple’s Fusion Drives combine the storage capacity of a hard disk drive (HDD)...

APFS Internals · Part 18

Snapshot Metadata

Our previous post covered how Object Maps facilitate the implementation of point-in-time Snapshots of APFS file systems by preserving File...

APFS Internals · Part 17

Decryption

Now that we know how to parse the File System Tree, analyze keybags, and unwrap decryption keys, it’s time to...

APFS Internals · Part 16

Update: Blazingly Fast-er SIMD Checksums

This is a quick update to yesterday’s post on using std::experimental::simd to speed up APFS Fletcher-64 calculations. It turns out...

High performance computing

Blazingly Fast Checksums with SIMD

Today’s post will take on a bit of a different style than the previous posts in this series. Among other...

File systems