Luís T. A. N. Brandão (IntlAssoc)

Member of the Cryptographic Technology Group (within the Computer Security Division, Information Technology Laboratory)

Coordinating the following projects:

• Multi-Party Threshold Cryptography (MPTC)
• Privacy Enhancing Cryptography (PEC)

Participating also in the following projects:

• Interoperable Randomness Beacons
• Circuit Complexity

Organizer of the following series of talks:

• NIST Crypto Reading Club (host since October 2021)
• Special Topics on Privacy and Public Auditability (Events #1, #2, #3, #4, #5, #6, #7, #8)

Organized NIST workshops/conferences:

• WPEC 2026: NIST Workshop on Privacy-Enhancing Cryptography 2026 (October 26–29) [Upcoming]
• TCPT3: NIST Threshold Call Preview Talks #3 (September 30 and October 06–07) [Upcoming]
• TCPT2: NIST Threshold Call Preview Talks #2 (July 07–08)
• MPTS 2026: NIST Workshop on Multi-Party Threshold Schemes 2025 (January 26–29)
• WPEC 2024: NIST Workshop on Privacy-Enhancing Cryptography 2024 (September 24–26)
• MPTS 2023: NIST Workshop on Multi-Party Threshold Schemes 2023 (September 26–28)
• MPTS 2020: NIST Workshop on Multi-Party Threshold Schemes 2020 (November 04–06)
• NTCW 2019: NIST Workshop on Threshold Cryptography 2019 (March 11–12)

Selected NIST published drafts (being revised)

• 2024: SP 800-224 ipd: Keyed-Hash Message Authentication Code (HMAC): Specification of HMAC and Recommendations for Message Authentication. Jointly with M. Sönmez Turan. DOI:10.6028/NIST.SP.800-224.ipd
• 2022: NISTIR 8214B ipd: Notes on Threshold EdDSA/Schnorr Signatures. Jointly with M. Davidson. DOI:10.6028/NIST.IR.8214B.ipd
• 2021: Toward a PEC Use-Case Suite. Preliminary Draft
• 2019: NISTIR 8213 Draft: A Reference for Randomness Beacons: Format and Protocol Version 2. Jointly with H. Booth, J. Kelsey, and R. Peralta. doi:10.6028/NIST.IR.8213-draft

Selected publications external to NIST

• 2016/2017: The Forge-and-Lose Technique and Other Contributions to Secure Two-Party Computation with Commitments. PhD. Thesis. doi:10.1184/r1/6723590
• 2016: Very-Efficient Simulatable Flipping of Many Coins into a Well. Public-Key Cryptography – PKC 2016. doi:10.1007/978-3-662-49387-8_12
• 2015: A Public Comment on NCCoE's White Paper on Privacy-Enhancing Identity Brokers. Joint with N. Christin and G. Danezis. arXiv:1611.02968v1
• 2015: Toward Mending Two Nation-Scale Brokered Identification Systems. Proceedings on Privacy Enhancing Technologies. Jointly with N. Christin, G. Danezis and Anonymous. doi:10.1515/popets-2015-0022
• 2013: Secure Two-Party Computation with Reusable Bit-Commitments, via a Cut-and-Choose with Forge-and-Lose Technique. Advances in Cryptology - ASIACRYPT 2013. doi:10.1007/978-3-642-42045-0_23
• 2012: On the Reliability and Availability of Replicated and Rejuvenating Systems under Stealth Attacks and Intrusions. Journal of the Brazilian Computer Society. Jointly with A. Bessani. doi:10.1007/s13173-012-0062-x

NIST publications (final version published)

(See list below, automatically generated)