The “Special Topics on Privacy and Public Auditability” (STPPA) series is organized by the Privacy Enhancing Cryptography (PEC) project in the Cryptographic Technology Group at NIST-ITL-CSD. A main goal of the series is to gather reference material about "PEC tools", which may facilitate future reflections on aspects of standardization and of development of recommendations/guidelines about advanced cryptography, namely for uses related to privacy and public auditability. Each event will include talks on various interconnected topics, aiming to convey basic technical background, incite curiosity, suggest research questions and discuss applications, with an emphasis on the role of cryptographic tools.
Attendance in each event is open and free to the public, but requires registration. Questions, comments or feedback can be sent to "pec-stppa at nist dot gov". Below is a list of past or scheduled events, with links to further details.
Event details (abstracts, bios, registration): https://csrc.nist.gov/events/2025/stppa7
Featured topics: Deniable Encryption, Time Lock Encryption, Witness Encryption.
Time: January 16, 2025, 12:00–16:00 EST (UTC-5).
Place: Virtual event by video conference.
Structure: Welcome; invited talks; panel conversation.
Attendance: Open and free to the public, upon registration.
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Title: STPPA #7 Welcome and Introduction Approximate start time: 12:00 EST (UTC-5) |
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Title: Timelock Encryption: an Overview and Retrospective Approximate start time: 12:15 EST (UTC-5) |
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Title: Witness Encryption: Theory and Practice Approximate start time: 13:00 EST (UTC-5) |
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Title: The Multiple Faces of Deniability Approximate start time: 14:30 EST (UTC-5) |
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Title: STPPA7 panel Approximate start time: 14:30 EST (UTC-5) |
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Event details (abstracts, bios, registration): https://csrc.nist.gov/events/2023/stppa6
Theme: Community efforts on advanced cryptography techniques
Featured topics: ZKP, MPC, FHE, ABE and others.
Time and place: July 25th, 2023, 09:30–15:30 EDT @ virtual event by video conference.
Structure: welcome; six invited talks; panel conversation.
Attendance: open and free to the public, upon registration.
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Title: STPPA#6 Welcome and Introduction Approximate start time: 09:35 EDT |
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Speaker: Kurt Rohloff (Duality Technologies) Approximate start time: 10:00 EDT |
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Title: Industry Adoption and Standardization Efforts by the MPC Speaker: Andrei Lapets (MPC Alliance and Magnite) Approximate start time: 10:30 EDT |
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Title: The ZKProof Process Towards Standardising Zero- Speaker: Mary Maller (Ethereum Foundation and PQShield) Approximate start time: 11:15 EDT |
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Title: Cryptographic access control by attributes — Speakers: Giovanni Bartolomeo (Consorzio Nazionale Approximate start time: 11:45 EDT |
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Title: Specifying Cryptography for use in Internet Protocols Speaker: Nick Sullivan (Cryptography Consulting LLC) Approximate start time: 12:45 EDT |
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Title: Efforts on Standardizing Fully Homomorphic Encryption Speaker: Rosario Cammarota (Intel Labs) Approximate start time: 13:15 EDT Media: [Abstract] [Slides and video to appear] |
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Title: Panel Conversation on Community Efforts on Panelists (speakers from previous talks): Kurt Rohloff (Duality Approximate start time: 14:05 EDT |
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Event details (abstracts, bios, registration): https://csrc.nist.gov/events/2023/stppa5
Featured topics: identity-based encryption (IBE), attribute-based encryption (ABE), and broadcast encryption.
Time and place: February 9th, 2023, 12:00–16:00 EST @ virtual event by video conference.
Structure: welcome; three invited talks; panel conversation.
Attendance: open and free to the public, upon registration.
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Title: STPPA#5 Welcome and Introduction Approximate start time: 12:00 EST |
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Title: Identity Based Encryption: an Overview Speaker: Dan Boneh (Standford University) Approximate start time: 12:10 EST |
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Title: Attribute-Based Encryption, Variants, and Speaker: Melissa Chase (Microsoft Research) Approximate start time: 13:00 EST |
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Title: Attribute-Based and Broadcast Encryption from Lattices Speaker: Hoeteck Wee (NTT Research) Approximate start time: 14:10 EST |
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Title: STPPA5 panel conversation on IBE, ABE and Panelists: Dan Boneh (Stanford University), Melissa Chase Approximate start time: 15:00 EST |
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Event details (abstracts, bios, registration): https://csrc.nist.gov/events/2022/stppa4
Featured topics: private authentication, blind signatures, anonymous credentials.
Time and place: November 21st, 2022, 09:00–12:30 EDT @ virtual event by video conference.
Structure: welcome; three invited talks; panel conversation.
Attendance: open and free to the public, upon registration.
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Title: STPPA#4 Welcome Approximate start time: 09:00 EST |
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Title: Anonymous credentials Speaker: Anna Lysyanskaya (Brown University) Approximate start time: 09:10 EST |
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Title: Blind Signatures: Past, Present, and Future Speaker: Julian Loss (CISPA, Germany) Approximate start time: 10:00 EST |
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Title: Challenges and new Features for Anonymous Credentials: Speaker: Foteini Baldimtsi (George Mason University) Approximate start time: 10:55 EST |
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Title: Panel: PEC for privacy and public auditability Panelists (the invited speakers): Foteini Baldimtsi (George Mason Moderators (the PEC team): Luís T. A. N. Brandão (NIST/Strativia), Approximate start time: 11:40 EST |
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Event details (abstracts, bios, registration): https://csrc.nist.gov/events/2021/stppa3
Time and place: July 6th, 2021, 13:30–16:45 EDT @ virtual event by video conference
Featured topics: private information retrieval (PIR), encrypted search, fully homomorphic encryption (FHE)
Structure: welcome; three invited talks; panel conversation
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Title: STPPA#3 Welcome Approximate start time: 13:30 EDT |
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Title: Private Information Retrieval with Near-Optimal Online Speaker: Elaine Shi (Carnegie Mellon University) Approximate start time: 13:40 EDT |
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Title: Encrypted Search Speaker: Seny Kamara (Brown University) Approximate start time: 14:25 EDT |
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Title: Private AI: Machine Learning on Encrypted Data Speaker: Kristin Lauter (Facebook AI Research) Approximate start time: 15:15 EDT |
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Title: Panel: PEC for privacy and public auditability Panelists (the invited speakers): Seny Kamara (Brown University); Moderators (the PEC team): Luís Brandão (NIST/Strativia), Approximate start time: 16:05 EDT |
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Event details (abstracts, bios, registration): https://csrc.nist.gov/Events/2021/stppa2
Time and place: April 19th, 2021, 13:00–16:00 EDT @ virtual event by video conference
Featured topics: private set intersection, secure multi-party computation.
Structure: introduction; two invited talks; panel conversation
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Title: STPPA#2 Intro: Brief comments on PEC and STPPA Speaker: Luís Brandão (NIST/Strativia). Approximate start time: 13:05 EDT |
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Title: A Brief Overview of Private Set Intersection Speaker: Mike Rosulek (Oregon State University) Approximate start time: 13:15 EDT |
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Title: Secure computation on datasets Speakers: Steve Lu (Stealth Software Technologies); Approximate start time: 13:55 EDT |
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Title: Panel: PEC for privacy and public auditability Panelists (the invited speakers): Steve Lu (Stealth Software Moderators (the PEC team): Luís Brandão (NIST/Strativia), Approximate start time: 15:10 EDT |
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(Note: The original schedule had planned an additional talk, which was postponed to a future event.)
Event details: https://csrc.nist.gov/Events/2020/stppa1
Featured topics: public randomness and auditability; differential privacy; census data; video time-authentication.
Time and place: January 27th, 2020, 10:00–15:00 EST @ NIST Gaithersburg (Building 101, Lecture room B)
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Title: Randomness beacons as enablers of public auditability Speaker: Luís Brandão (NIST) Approximate start time: 10:15 EST |
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Title: De-Identification and Differential Privacy Speaker: Simson Garfinkel (U.S. Census Bureau) Approximate start time: 10:45 EST |
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Title: Deploying differential privacy for the 2020 census of (Impromptu alternative to "Differential Privacy at the US Speaker: Simson Garfinkel (U.S. Census Bureau) Approximate start time: 11:45 EST Media: [Abstract] [Slides] (alt "...: status report") and [Video] |
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Title: What math and physics can do to combat fake videos Speaker: Charles Bennett (IBM Research) Approximate start time: 14:00 EST |
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Security and Privacy: cryptography, privacy