If you hear privacy and your first thought is laborious processes and access management, this interview may be just as mind-expanding for you as it was for our host Pascal. He is joined by Alex and Haozhi who talk about the Anonymous Credential Service (ACS), a highly available multitenant service that allows clients to authenticate in a de-identified manner. They discuss the cryptographic primitives powering the service and the various challenges they encountered scaling it to support Meta's products.

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Links

How Meta enables de-identified authentication at scale - https://engineering.fb.com/2022/03/30/security/de-identified-authentication-at-scale/
Open-sourcing Anonymous Credential Service - https://engineering.fb.com/2022/12/12/security/anonymous-credential-service-acs-open-source/
ACS on GitHub - https://github.com/facebookresearch/acs
ReactJS - The Documentary - https://www.youtube.com/watch?v=8pDqJVdNa44

Timestamps

Intro 0:12
Alex and Haozhi Intro 1:22
Cryptography and Privacy 2:47
Team Mission 3:35
Data Minimisation 4:28
PETs 5:13
Why authenticate? 8:39
ACS under the hood 10:06
ACS Architecture 16:02
Challenges 21:03
ACS in Open Source 26:36
Key-Derivation Functions 29:22
How to get started 32:10
Outro 33:47
Bloopers 34:29

50: De-identified authentication at scale

Meta Tech Podcast