CIS Lab Team
Pratish Datta
Scientist
I received my MSc in Mathematics and PhD in Cryptography from Indian Institute of Technology Kharagpur in 2012 and in 2017 respectively. Since 2017, before joining the CIS Laboratories of NTT Research, Inc. in 2019, I worked as a postdoctoral fellow at the NTT Secure Platform Laboratories in Japan under the supervision of Dr. Tatsuaki Okamoto. My mathematical background laid the foundation for my expertise over a wide range of hybrid strategies of provable security. Designing cryptographic algorithms offering advanced functionalities, featuring practical efficiency, and guaranteeing strong mathematical security at the same time is the central goal of my research endeavors. Specifically, I am interested in the design and analysis of functional encryption, attribute-based encryption, signatures, and pseudorandom functions. My findings have been broadly published within the proceedings of frontline international conferences like ASIACRYPT, PKC, ISC etc., and high-impact international journals like Theoretical Computer Science, Algorithmica etc.
Publications
- (Compact) Adaptively secure FE for attribute-weighted sums from k-Lin
By Pratish Datta & Tapas Pal
Designs, Codes and Cryptography 2023
- Decentralized Multi-Authority Attribute-Based Inner-Product FE: Large Universe and Unbounded
By Pratish Datta & Tapas Pal
Public Key Cryptography 2023 - Fully adaptive decentralized multi-authority ABE
By Pratish Datta, Ilan Komargodski & Brent Waters
EUROCRYPT 2023
- Decentralized Multi-authority ABE for NC1 from BDH
By Pratish Datta, Ilan Komargodski & Brent Waters
Journal of Cryptology 2023
- Short attribute-based signatures for arbitrary Turing machines from standard assumptions
By Pratish Datta, Ratna Dutta & Sourav Mukhopadhyay
Designs, Codes and Cryptography 2023
- Registration-Based Functional Encryption
By Pratish Datta & Tapas Pal
IACR Cryptology ePrint Archive 2023
- Compact FE for Unbounded Attribute-Weighted Sums for Logspace from SXDH
By Pratish Datta, Tapas Pal & Katsuyuki Takashima
IACR Cryptol. ePrint Arch 2022
- Fully Adaptive Decentralized Multi-Authority ABE
By Pratish Datta, Brent Waters & Ilan Komargodski
Cryptology ePrint Archive 2022
- (Compact) Adaptively Secure FE for Attribute-Weighted Sums from k–Lin
By Pratish Datta & Tapas Pal
ASIACRYPT 2021
- Decentralized Multi-authority ABE for DNFs from LWE
By Pratish Datta, Ilan Komargodski & Brent Waters
EUROCRYPT 2021
- By Pratish Datta, Ilan Komargodski & Brent Waters
IACR Cryptol. ePrint Arch 2021
- Efficient Attribute-based Signatures for Unbounded Arithmetic Branching Programs
By Pratish Datta, Tatsuaki Okamoto & Katsuyuki Takashima
IACR Cryptol. ePrint Arch. 2019
- Constrained Pseudorandom Functions for Turing Machines Revisited: How to Achieve Verifiability and Key Delegation
By Pratish Datta, Ratna Dutta & Sourav Mukhopadhyay
Algorithmica 2019
- Adaptively Simulation-Secure Attribute-Hiding Predicate Encryption
By Pratish Datta, Tatsuaki Okamoto & Katsuyuki Takashima
ASIACRYPT 2018
- Constrained Pseudorandom Functions from Functional Encryption
By Pratish Datta
ISPEC 2018
- Full-Hiding (Unbounded) Multi-Input Inner Product Functional Encryption from the k-Linear Assumption
By Pratish Datta, Tatsuaki Okamoto & Junichi Tomida
IACR Cryptol. ePrint Arch. 2018
- Short Attribute-based Signatures for Arbitrary Turing Machines from Standard Assumptions
By Pratish Datta, Ratna Dutta & Sourav Mukhopadhyay
IACR Cryptol. ePrint Arch. 2017
- Strongly Full-hiding Inner Product Encryption
By Pratish Datta, Ratna Dutta & Sourav Mukhopadhyay
Theor. Comput. Sci. 2017
- Compact Attribute-Based and Online-Offline Multi-input Inner Product Encryptions from Standard Static Assumptions (Short Paper)
By Pratish Datta
ISPEC 2017
- Constrained Pseudorandom Functions for Unconstrained Inputs Revisited: Achieving Verifiability and Key Delegation
By Pratish Datta, Ratna Dutta & Sourav Mukhopadhyay
Public Key Cryptography 2017
- Attribute-Based Signatures for Turing Machines
By Pratish Datta, Ratna Dutta & Sourav Mukhopadhyay
IACR Cryptol. ePrint Arch. 2017
- Adaptively Secure Unrestricted Attribute-based Encryption with Subset Difference Revocation in Bilinear Groups of Prime Order
By Pratish Datta, Ratna Dutta & Sourav Mukhopadhyay
AFRICACRYPT 2016
- Verifiable and Delegatable Constrained Pseudorandom Functions for Unconstrained Inputs
By Pratish Datta, Ratna Dutta & Sourav Mukhopadhyay
IACR Cryptol. ePrint Arch. 2016
- Succinct Predicate and Online-Offline Multi-Input Inner Product Encryptions under Standard Static Assumptions
By Pratish Datta, Ratna Dutta & Sourav Mukhopadhyay
IACR Cryptol. ePrint Arch. 2016
Functional Encryption for Inner Product with Full Function Privacy
By Pratish Datta, Ratna Dutta & Sourav Mukhopadhyay
Public Key Cryptography 2016
- Compact Attribute-based Encryption and Signcryption for General Circuits from Multilinear Maps
By Pratish Datta, Ratna Dutta & Sourav Mukhopadhyay
INDOCRYPT 2015 - Functional Signcryption: Notion, Construction, and Applications
By Pratish Datta, Ratna Dutta & Sourav Mukhopadhyay
ProvSec 2015 - General Circuit Realizing Compact Revocable Attribute-based Encryption from Multilinear Maps
By Pratish Datta, Ratna Dutta & Sourav Mukhopadhyay
ISC 2015 - Fully Secure Unbounded Revocable Attribute-Based Encryption in Prime Order Bilinear Groups via Subset Difference Method
By Pratish Datta, Ratna Dutta & Sourav Mukhopadhyay
IACR Cryptol. ePrint Arch. 2015 - Fully Secure Online/Offline Predicate and Attribute-Based Encryption
By Pratish Datta, Ratna Dutta & Sourav Mukhopadhyay
ISPEC 2015
- Fully Secure Self-updatable Encryption in Prime Order Bilinear Groups
By Pratish Datta, Ratna Dutta & Sourav Mukhopadhyay
ISC 2014
- Universally Composable Efficient Priced Oblivious Transfer from a Flexible Membership Encryption
By Pratish Datta, Ratna Dutta & Sourav Mukhopadhyay
ACISP 2014
- A Probabilistic Algebraic Attack on the Grain Family of Stream Ciphers
By Pratish Datta, Ratna Dutta & Sourav Mukhopadhyay
NSS 2014
- A New Variant of Algebraic Attack
By Pratish Datta, Dibyendu Roy & Sourav Mukhopadhyay
SNDS 2014
