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LightCrypt SIGNED

New Directions in Lightweight Cryptanalysis

Total Cost €


EC-Contrib. €






Project "LightCrypt" data sheet

The following table provides information about the project.


Organization address
postcode: 52900

contact info
title: n.a.
name: n.a.
surname: n.a.
function: n.a.
email: n.a.
telephone: n.a.
fax: n.a.

 Coordinator Country Israel [IL]
 Total cost 1˙487˙500 €
 EC max contribution 1˙487˙500 € (100%)
 Programme 1. H2020-EU.1.1. (EXCELLENT SCIENCE - European Research Council (ERC))
 Code Call ERC-2017-STG
 Funding Scheme ERC-STG
 Starting year 2017
 Duration (year-month-day) from 2017-10-01   to  2022-09-30


Take a look of project's partnership.

# participants  country  role  EC contrib. [€] 
1    BAR ILAN UNIVERSITY IL (RAMAT GAN) coordinator 1˙487˙500.00


 Project objective

Over the next five years, fifty billion new smart devices will be connected to the Internet of Things (IoT), creating a revolution in the way we interact with our environment. Such resource constrained devices will require lightweight cryptography to protect them and us from bad actors. Unfortunately, such schemes can be highly vulnerable: Two notable examples are the encryption schemes used in GSM cellular phones and in car remote controls - both broken by the PI. We claim that it is not sufficient to adjust the current design and analysis tools to the constrained environment. Instead, we must establish a new research methodology, aiming directly at the problems arising in the 'lightweight realm'. We plan to concentrate on four main directions. First, we will go 'a level up' to study the security of generic lightweight building blocks in order to find the minimal number of operations required to transition from insecure to secure designs. Second, when considering specific ciphers we will pursue practical low complexity attacks, which are more relevant to the lightweight realm than standard theoretical attacks. Third, we will pursue new directions toward establishing 'white-box cryptography' – a central challenge in IoT cryptography. Finally, we will explore further applications of discrete analysis to lightweight cryptography, trying to establish rigorous conditions under which the standard cryptanalytic techniques apply in order to avoid unnecessarily pessimistic security estimates. For the near future, we hope that our research will make it possible to detect and fix weaknesses in existing lightweight ciphers before they can be exploited by the 'bad guys'. Looking forward farther, we hope to understand how to design new secure lightweight ciphers for the billions of IoT devices to come.


List of deliverables.
Data Management Plan Open Research Data Pilot 2019-03-20 15:37:07

Take a look to the deliverables list in detail:  detailed list of LightCrypt deliverables.


year authors and title journal last update
List of publications.
2018 Itai Dinur, Orr Dunkelman, Nathan Keller, Adi Shamir
Efficient Dissection of Bicomposite Problems with Cryptanalytic Applications
published pages: , ISSN: 1420-3049, DOI:
Journal of Cryptology 2019-08-05
2019 Achiya Bar-On, Orr Dunkelman, Nathan Keller, Ariel Weizman
DLCT: A New Tool for Differential-Linear Cryptanalysis
published pages: , ISSN: , DOI:
2018 Itai Dinur, Nathan Keller, Ohad Klein
An Optimal Distributed Discrete Log Protocol with Applications to Homomorphic Secret Sharing
published pages: , ISSN: , DOI:
2018 Adi Ben-Zvi, Arkadius G. Kalka, Boaz Tsaban
Cryptanalysis via Algebraic Spans
published pages: , ISSN: , DOI:
2018 Achiya Bar-On, Itai Dinur, Orr Dunkelman, Rani Hod, Nathan Keller, Eyal Ronen, Adi Shamir
Tight Bounds on Online Checkpointing Algorithms
published pages: , ISSN: , DOI:
2018 Achiya Bar-On, Orr Dunkelman, Nathan Keller, Eyal Ronen, Adi Shamir
Improved Key Recovery Attacks on Reduced-Round AES with Practical Data and Memory Complexities
published pages: , ISSN: , DOI:
2019 Itai Dinur, Niv Nadler
Multi-target Attacks on the Picnic Signature Scheme and Related Protocols
published pages: , ISSN: , DOI:
2019 Itai Dinur, Daniel Kales, Angela Promitzer, Sebastian Ramacher, Christian Rechberger
Linear Equivalence of Block Ciphers with Partial Non-Linear Layers: Application to LowMC
published pages: , ISSN: , DOI:

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