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1. Functional ENcryption TEChnologies:
current status

During 2019, data protection and digital privacy became legally relevant and will continue to do so during 2020, so FENTEC is in a growing and favourable context, with an increasingly aware of digital privacy. 

Finished the Y2 of FENTEC, we start a new stage where the project acquires a higher maturity. 24 months of hard work that have borne fruit by successfully overcoming the review of last November 6. In the third and final year of the project's life, the development and pilots will reach their peak of maturity. 

2. Prototype & Functional ENcryption implementation
Recent work into the FENTEC use cases has been to perform initial security verification and preliminary performance analysis. The initial prototype all conform to within a reasonable degree to the requirements analysis and the initial technical specifications. The degree of security has been considered adequate for all three use cases. For its part, the computational performance of the FE is being more problematical. 
  • For the WALLIX use case the performance was within expectations but the results are for a simulation only. 
  • For the Kudelski use case, some predictions were required to estimate the actual performance but proved to be within a useful range for the use case application. 
  • Finally, for the ATOS use case the FE component was only a small part of the computation and as the size of the data increased the FE became even less significant.
3. Hardware implementation & security status

In WP5, KU Leuven has put its efforts on adapting multi-input inner-product functional encryption based on the learning with errors (LWE) problem to an equivalent scheme based on the ring-LWE problem in order to improve the efficiency of such a construction. A reference implementation for the ring-LWE Functional ENcryption has been developed to demonstrate its usability. Currently, KU Leuven is working together with XLAB on an optimized implementation which will combine different techniques, such as CRT decomposition of polynomials, to allow the parallelization of modular arithmetic and the NTT for fast convolution. KU Leuven has an accepted paper at TCHES2020 on an improved version of Toom-Cook multiplication - an application to module-lattice based cryptography.

UH has implemented an accelerator for inner-product multi-input functional encryption based on Paillier encryption by using programmable system-on-chip (SoC) devices (Xilinx Zynq). It utilizes the inherent parallelism of the Functional ENcryption scheme by dividing the computation to multiple parallel processing cores. A manuscript about this topic has been submitted to a journal.

Currently, UH is working on an implementation of cryptographic pairings and porting the architecture into a more powerful SoC. Adding support for pairings will extend the spectrum of Functional ENcryption schemes that can be implemented with the architecture; in particular, it will allow computation of more expressive functions and add support for features such as function hiding. The more powerful SoC (Xilinx UltraScale+) will increase the number of parallel cores in the architecture and, consequently, lead to significantly higher performance that is required, for example, in the use cases of FENTEC.
4. USE CASES
 
NEW INFOGRAPHICS!
Have a look at our latest infographics! Click on the image to enlarge and don't hesitate to share it on your website or social networks.

4.1. Privacy-preserving and auditable Digital Currency


4.2. Motion Detection and Local Decision Making


4.3. Privacy-preserving Statistical Analysis

5. EVENTS
6. FENTEC GOES SOCIAL

Top mention January

Top Twitter January
Tweet Yolan FENTEC
Tweet FENTEC
Special mention to our most active partner on Twitter:

Thanks to Yolan Romailler, from Kudelski Security, for contributing to the dissemination of the project! 
Follow FENTEC on Twitter

Top LinkedIn January

7. CONCLUSIONS Y2
FENTEC closes the first development cycle and enters the final year of the project in which the second and final version of the three prototypes will be delivered. The output of the first production cycle was very promising and the team is working really hard into improving some of the functionalities and correcting the errors identified. 

Also this year, the project will be organising several events to present the latest advances in Functional ENcryption (FE) algorithms, hardware support, the libraries implemented by FENTEC, and of course the three FE final prototypes.

We hope to see you all in these workshops, seminars and our final conference, so please stay tuned! 

This project has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement No 780108. Any dissemination of results here presented reflects only the consortium view.
Copyright © 2020 FENTEC Project, All rights reserved.

Contact us:
alicia.cuadrado@atos.net 

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