back

PUFs, protection, privacy, PRNGs

an overview of physically unclonable functions

If you suspend your transcription on amara.org, please add a timestamp below to indicate how far you progressed! This will help others to resume your work!

Please do not press “publish” on amara.org to save your progress, use “save draft” instead. Only press “publish” when you're done with quality control.

Video duration
00:31:44
Language
English
Abstract
A physically unclonable function, or PUF, is some physical structure with properties that are easy to verify, hard to predict, and practically impossible to clone. Ideally, this means it's a device-unique unchanging identifier, which can be used for improving security. However, it can be at odds with privacy and anonymity. This talk will give you an overview of the thirty years of history behind PUFs, and will include the most recent advances in research. The functions, structure, and design will be discussed, as well as devices and materials that have properties to base PUFs on.

What do CPU registers, sticks of RAM, shared memory in GPUs, and paper have in common? They all have unique properties that are impossible[1] to reproduce, even when using the same manufacturing process. These properties can be turned into physically unclonable functions, or PUFs for short, yielding an object-bound unique identifier. This makes you trackable, but since you're being tracked anyway, you might as well put some of this to good use.

The idea of PUFs is not new, and can be traced back several decades to anti-counterfeiting measures in currency. Since then, several formalizations have been proposed, new types of PUFs have been invented, implemented, attacked, and scrutinized. PUFs can be used to identify and authenticate devices. They can be used to secure your boot process. Some PUF constructions can be used to enhance your random number generation. You might be using devices right now that have properties that can be turned into PUFs, provided you have the tools and want to do some programming.

This talk will take you on a brief tour of the history of PUFs. Along the way, it will show you how a PUF is constructed, what its properties should be, what it can be used for, what materials and devices are known to be suitable for building one, and how you might go about searching for them in your own devices.

[1] For certain definitions of impossible.

Talk ID
8231
Event:
33c3
Day
3
Room
Saal 2
Start
10:45 p.m.
Duration
00:30:00
Track
Science
Type of
lecture
Speaker
Pol Van Aubel
Talk Slug & media link
33c3-8231-pufs_protection_privacy_prngs

Talk & Speaker speed statistics

Very rough underestimation:
136.8 wpm
780.3 spm
140.5 wpm
800.7 spm
100.0% Checking done100.0%
0.0% Syncing done0.0%
0.0% Transcribing done0.0%
0.0% Nothing done yet0.0%
  

Work on this video on Amara!

Talk & Speaker speed statistics with word clouds

Whole talk:
136.8 wpm
780.3 spm
Pol Van Aubel:
140.5 wpm
800.7 spm