IACR News
Here you can see all recent updates to the IACR webpage. These updates are also available:
04 November 2022
Lyon, Frankreich, 22 April - 23 April 2023
Event CalendarSubmission deadline: 5 January 2023
Notification: 9 February 2023
Neuchâtel, Schweiz/Suisse/Svizzera/Svizra, 26 June - 29 June 2023
Event CalendarSubmission deadline: 18 November 2022
Notification: 20 January 2023
Zhangjiajie, China, 28 December - 31 December 2022
Event CalendarSubmission deadline: 30 October 2022
Notification: 30 November 2022
Zhangjiajie, China, 28 December - 31 December 2022
Event CalendarSubmission deadline: 30 October 2022
Notification: 30 November 2022
02 November 2022
Lund University, Lund, Sweden
Job PostingThird cycle studies at Lund University consist of full-time studies for 4 years. A doctoral studentship is a fixed-term employment of a maximum of 5 years (including 20% departmental duties). Starting salary is around 3100Euro per month. For further information and information on how to apply, see https://lu.varbi.com/en/what:job/jobID:557529/
Closing date for applications:
Contact: Thomas Johansson: thomas (at) eit.lth.se
More information: https://lu.varbi.com/en/what:job/jobID:557529/
atlanTTic Research Center, Universidade de Vigo; Vigo, Spain
Job PostingPhD position available at the AtlanTTic Research Center (https://atlanttic.uvigo.es/en/), Universidade de Vigo, Spain. Start in early 2023, covering full PhD duration (3-4 years), and including travel budget for conferences and summer schools.
The workplace is in the city of Vigo, being ranked by OCU as the Spanish city with the highest life quality (https://www.idealista.com/en/news/lifestyle-in-spain/2021/06/02/13426-quality-of-life-in-spain-spanish-cities-with-the-best-and-worst-quality-of-life).
The position will be part-time in two projects related to privacy and intellectual property protection for federated machine learning: 1) TRUMPET, an European project on privacy enhancing methods and privacy metrics for federated learning (FL); 2) FELDSPAR, a Spanish project to use DNN watermarking for protecting the intellectual property of FL models.
PhD candidates will carry out research on: 1) identifying threat models and measuring privacy leaks in FL; 2) develop novel DNN watermarking algorithms in FL robust to collusion attacks.
Intended tasks:
Your profile:
Closing date for applications:
Contact: For more details, send an email to Prof. Fernando Pérez-González (fperez@gts.uvigo.es).
Florida Atlantic University
Job PostingClosing date for applications:
Contact: Informal inquiries can be addressed to: Dr. Edoardo Persichetti, Chair of the Search Committee, (epersichetti@fau.edu). Apply at https://fau.wd1.myworkdayjobs.com/FAU/job/Boca-Raton/Assistant-Professor--Cryptology_REQ14641
More information: https://fau.wd1.myworkdayjobs.com/FAU/job/Boca-Raton/Assistant-Professor--Cryptology_REQ14641
NYU Shanghai, Engineering and Computer Science; Shanghai, China
Job PostingClosing date for applications:
Contact: NYU Shanghai NY Office of Faculty Recruitment: shanghai.faculty.recruitment@nyu.edu
More information: https://apply.interfolio.com/116511
Vernam Lab, Worcester Polytechnic Institute; Worcester, USA.
Job PostingRequirements
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• A degree in ECE or CS
• Strong background in mathematics and computer engineering
• Prior experience in one or more of the following is a plus:
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o Cryptography
o Machine learning
o Programming languages: Python (open to work with new libraries), VHDL/Verilog
o FPGA prototyping, lab equipment (hands-on experience)
What does Vernam Lab offer? A competitive salary and an international cutting-edge research program in an attractive working environment.
WPI is a highly-ranked research university in the Boston area and has been recently recognized by the 2020 HEED Award for its outstanding commitment to diversity and inclusion. In accordance with this mission and to broaden participation in STEM, we encourage all students, especially minority students, to apply. Interested students should contact us by sending an email with a CV to vernam.labs@gmail.com.
Closing date for applications:
Contact: vernam.labs@gmail.com
01 November 2022
Gora Adj, Luis Rivera-Zamarripa, Javier Verbel
ePrint ReportMinRank is an NP-complete problem extensively studied due to its applications to cryptanalysis since its introduction in 1999. However, only a few schemes base their security on its intractability, and their signature size is large compared with other proposals based on NP problems. This paper introduces the first MinRank-based digital signature scheme that uses the MPC-in-the-head, enabling it to achieve small signature sizes and running times. For NIST's category I parameter set, we obtain signatures of 6.5KB, which is competitive with the shortest proposals in the literature that are based on non-structured problems.
Susan Hohenberger, George Lu, Brent Waters, David J. Wu
ePrint ReportThis work introduces registered ABE, a primitive that allows users to generate secret keys on their own and then register the associated public key with a "key curator" along with their attributes. The key curator aggregates the public keys from the different users into a single compact master public key. To decrypt, users occasionally need to obtain helper decryption keys from the key curator which they combine with their own secret keys. We require that the size of the aggregated public key, the helper decryption keys, the ciphertexts, as well as the encryption/decryption times to be polylogarithmic in the number of registered users. Moreover, the key curator is entirely transparent and maintains no secrets. Registered ABE generalizes the notion of registration-based encryption (RBE) introduced by Garg et al. (TCC 2018), who focused on the simpler setting of identity-based encryption.
We construct a registered ABE scheme that supports an a priori bounded number of users and policies that can be described by a linear secret sharing scheme (e.g., monotone Boolean formulas) from assumptions on composite-order pairing groups (the same pairing-based assumptions previously used to construct vanilla ABE). Notably, our approach deviates sharply from previous techniques for constructing RBE and only makes black-box use of cryptography. All existing RBE constructions (a weaker notion than registered ABE) rely on heavy non-black-box techniques. In fact, the encryption and decryption costs of our construction are comparable to those of vanilla pairing-based ABE. Finally, as a feasibility result, we show how to construct a registered ABE scheme that supports general policies and an arbitrary number of users from indistinguishability obfuscation and somewhere statistically binding hash functions.
Markku-Juhani O. Saarinen
ePrint ReportPeter Chvojka, Tibor Jager
ePrint ReportWe propose new constructions of non-malleable non-interactive timed commitments, which combine (an extension of) the Naor-Yung paradigm used to construct IND-CCA secure encryption with a non-interactive ZK proofs for a simple algebraic language. This yields much simpler and more efficient non-malleable timed commitments in the standard model.
Furthermore, our constructions also compare favourably to known constructions of timed commitments in the random oracle model, as they achieve several further interesting properties that make the schemes very practical. This includes the possibility of using a homomorphism for the forced opening of multiple commitments in the sense of Malavolta and Thyagarajan (CRYPTO 2019), and they are the first constructions to achieve public verifiability, which seems particularly useful to apply the homomorphism in practical applications.
Yusuf Alnawakhtha, Atul Mantri, Carl A. Miller, Daochen Wang
ePrint ReportYaniv Kleinman, Shlomi Dolev
ePrint ReportOur CRT-based scheme is partially homomorphic, supporting homomorphic multiplications. Nevertheless, our scheme has the potential to be regarded as fully homomorphic for practical scenarios, such as bounded-sized multi-cloud databases.