Privacy-Enhancing Cryptography PEC

Special Topics on Privacy and Public Auditability

The “Special Topics on Privacy and Public Auditability” (STPPA) series is organized by the Cryptographic Technology Group at NIST-CSD. We plan to host events once every four months. Each event will include talks on various interconnected topics related to privacy and public auditability. The goal is to convey basic technical background, incite curiosity, suggest research questions, and discuss research directions.

Below is a list of the events and links to the presentation slides:

1st event


  • Meeting agenda and abstracts: click here
  • Date: Monday, January 27, 2020
  • Place: NIST Gaithersburg, Administrative Building (101), Lecture room B
  • Covered topics: fake videos; census data; differential privacy; public randomness

List of talks:

  • Charles Bennett, IBM. What math and physics can do to combat fake videos. Video.
  • Simson Garfinkel, U.S. Census Bureau. Differential Privacy at the US Census Bureau: Status Report. Slides and video.
  • Simson Garfinkel, U.S. Census Bureau. De-Identification and Differential Privacy. Slides and video.
  • Luís Brandão, NIST. Randomness beacons as enablers of public auditability. Slides and video.

*Note: the initially shared agenda mentioned a different 2nd talk (10:45am–11:30am), but the speaker could not attend; the actual (and impromptu) 2nd talk was given by Simson Garfield from the U.S. Census Bureau.

2nd event

To be announced

Additional Pages

STPPA suite zkproof


Reach us at:

Luís T. A. N. Brandão

Angela Robinson

René Peralta


Security and Privacy: cryptography, privacy

Created January 03, 2017, Updated February 23, 2021