Nathan Manohar
I am a Research Scientist in Cryptography, Security, and Privacy and a member of the Cryptography Research Group at the IBM T.J. Watson Research Center. My main research interests are cryptography, computer security, and, more broadly, theoretical computer science. I am particularly interested in fully homomorphic encryption, secure multi-party computation, and functional encryption.
I received my PhD in Computer Science from UCLA in December 2021, where I was very fortunate to be advised by Amit Sahai. Previously, I received a bachelor's degree in Computer Science and Mathematics and a master's degree in Computer Science from Harvard in 2016.
Email: n lastname [at] ibm [dot] com
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Publications
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On the Hardness of Scheme-Switching Between SIMD FHE Schemes
Karim Eldefrawy,
Nicholas Genise,
Nathan Manohar
PQCrypto 2023
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Implementation of a Hardware-Assisted Bluetooth-Based COVID-19 Tracking Device in a High School: Mixed Methods Study
Dan Li,
Tyler Shelby,
Marie Brault,
Rajit Manohar,
Sten Vermund,
Ashley Hagaman,
Laura Forastiere,
Tyler Caruthers,
Emilie Egger,
Yizhou Wang,
Nathan Manohar,
Peter Manohar,
J Lucian Davis,
Xin Zhou
JMIR Formative Research 2023
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CraterLake: A Hardware Accelerator for Efficient Unbounded Computation on Encrypted Data
Nikola Samardzic,
Axel Feldmann,
Aleksandar Krastev,
Nathan Manohar,
Nicholas Genise,
Srinivas Devadas,
Karim Eldefrawy,
Chris Peikert,
Daniel Sanchez
ISCA 2022
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Sine Series Approximation of the Mod Function for Bootstrapping of Approximate HE
Charanjit S. Jutla, Nathan Manohar
EUROCRYPT 2022
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Secure MPC: Laziness Leads to GOD
Saikrishna Badrinarayanan,
Aayush Jain, Nathan Manohar, Amit Sahai
ASIACRYPT 2020
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Amplifying the Security of Functional Encryption, Unconditionally
Aayush Jain, Alexis Korb, Nathan Manohar, Amit Sahai
CRYPTO 2020
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Self-Processing Private Sensor Data via Garbled Encryption
Nathan Manohar, Abhishek Jain, Amit Sahai
PETS 2020
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Combiners for Functional Encryption, Unconditionally
Aayush Jain, Nathan Manohar, Amit Sahai
EUROCRYPT 2020
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From FE Combiners to Secure MPC and Back
Prabhanjan Ananth,
Saikrishna Badrinarayanan,
Aayush Jain,
Nathan Manohar,
Amit Sahai
TCC 2019
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Watermarking Public-Key Cryptographic Primitives
Rishab Goyal,
Sam Kim,
Nathan Manohar,
Brent Waters,
David J. Wu
CRYPTO 2019
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T/Key: Second-Factor Authentication From Secure Hash Chains
Dmitry Kogan, Nathan Manohar, Dan Boneh
CCS 2017
Manuscripts
Theses
Interns
I have been fortunate to work with the following interns.
Professional Service
I have served on the organizing committee of the following workshops.
- DISCC 2022: 1st Workshop on Data Integrity and Secure Cloud Computing
I have served as an external reviewer for various editions of the following conferences/journals.
- CRYPTO, EUROCRYPT, ASIACRYPT, TCC, PKC, CCC, ITCS, SCN, ICALP, ITC, Designs, Codes, and Cryptography
Personal
In my spare time, I enjoy playing violin and piano. I currently play violin in The Broadway Bach Ensemble, and, as a PhD student, I played violin in the UCLA Symphony. I also like to spend time with my cat, Mary, who shares similar interests.
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