International Association for Cryptologic Research

IACR News Central

Get an update on changes of the IACR web-page here. For questions, contact newsletter (at) iacr.org. You can also get this service via

To receive your credentials via mail again, please click here.

You can also access the full news archive.

Further sources to find out about changes are CryptoDB, ePrint RSS, ePrint Web, Event calender (iCal).

2013-08-20
15:31 [News] Clarification on the new IACR publication and copyright policy

  HTML version

15:03 [Event][New] CT-RSA '14: Cryptographers' Track at the RSA Conference

  Submission: 5 September 2013
Notification: 31 October 2013
From February 24 to February 28
Location: San Francisco, USA
More Information: http://research.microsoft.com/en-us/um/redmond/events/CT-RSA-2014/cfp.htm


15:00 [Job][Update] 1 Post-Doc position in Privacy-preserving biometrics , Chalmers University of Technology, Sweden

  We are looking for an excellent, motivated, self-driven post-doctoral researcher to work in the area of cryptography with a focus on privacy-preserving biometrics. More precisely, the researcher will be employed in the European FP7 project BEAT (Biometric Evaluation and Testing). The researcher is expected to investigate and analyse the security and privacy of existing privacy-preserving biometric authentication systems against different types of attacks and propose new ones robust to the identified weaknesses.

Some info about the BEAT research project can be found here: http://www.beat-eu.org

More info about the research of the group can be found here: http://lasecwww.epfl.ch/~katerina/Publications.html

The employment is limited to 1 year and may be extended to 1 more year.

The applicant should have Ph.D. degree preferably in information security, computer science, cryptography or equivalent by the start of the appointment. Experience in security communication protocols, provable security, homomorphic encryption, zero-knowledge proofs, privacy-preservation and biometric authentication is highly valued.





2013-08-19
08:59 [Job][New] 1 Post-Doc position in Privacy-preserving biometrics , Chalmers University of Technology, Sweden

  We are looking for an excellent, motivated, self-driven post-doctoral researcher to work in the area of cryptography with a focus on privacy-preserving biometrics. More precisely, the researcher will be employed in the European FP7 project BEAT (Biometric Evaluation and Testing). The researcher is expected to investigate and analyse the security and privacy of existing privacy-preserving biometric authentication systems against different types of attacks and propose new ones robust to the identified weaknesses.

Some info about the BEAT research project can be found here: http://www.beat-eu.org

More info about the research of the group can be found here: http://lasecwww.epfl.ch/~katerina/Publications.html

The employment is limited to 1 year and may be extended to 1 more year.

The applicant should have Ph.D. degree preferably in information security, computer science, cryptography or equivalent by the start of the appointment. Experience in security communication protocols, provable security, homomorphic encryption, zero-knowledge proofs, privacy-preservation and biometric authentication is highly valued.



08:59 [Job][New] PhD students, Queensland University of Technology, Brisbane, Australia

 

The cryptography group in the Information Security discipline at the Queensland University of Technology (QUT) in Brisbane, Australia, invites applications for PhD students starting in 2014 in various aspects of cryptographic protocols and algorithms. We are always interested in taking on new research students with appropriate background knowledge and an interest in challenging problems in the area.

Research interests of the group include:

  • design and cryptanalysis of stream ciphers
  • elliptic curves and pairings; identity-based cryptography
  • lattice-based cryptography
  • design and analysis of key exchange protocols
  • real-world Internet cryptography protocols

Interested students should contact one of the potential supervisors (Emeritus Professor Ed Dawson, Associate Professor Xavier Boyen, Dr Leonie Simpson, Dr Douglas Stebila) to discuss the availability of a suitable project. For these projects students will be expected to have a strong mathematical and computer science background. Previous experience in cryptography and networking is an advantage.

QUT offers competitive scholarships for living expenses and tuition fee waivers to support domestic and international PhD students. Applications for admission are accepted year-round, but the deadline for the annual scholarship competition is Sunday 13 October 2013.



08:59 [Job][Update] Post-Doc, University of Athens, Greece

  We are looking for a Post-Doc in cryptography. Contact us if you have (or about to receive) a Ph.D. in cryptography (or very related subject), an excellent publication record that includes IACR conferences and you want to work in a fun environment in Athens - Greece.

Funding is through the European Research Council project CODAMODA. More information about the Crypto.Sec group at the National and Kapodistrian University of Athens can be found here http://crypto.di.uoa.gr

Applications will be considered immediately. The position is for 1 year with the possibility of renewal. Salary is competitive.



2013-08-17
21:17 [Pub][ePrint] On secret sharing with nonlinear product reconstruction, by Ignacio Cascudo and Ronald Cramer and Diego Mirandola and Carles Padro and Chaoping Xing

  Multiplicative linear secret sharing is a fundamental notion in the area of secure multi-party computation (MPC) and,

since recently, in the area of two-party cryptography as well. In a nutshell, this notion guarantees that

``the product of two secrets is obtained as a linear function of the vector consisting of the

coordinate-wise product of two respective share-vectors\'\'. This paper focuses on the following foundational question, which is novel to the best of our knowledge. Suppose we {\\em abandon the latter linearity condition} and instead require that this product is obtained by {\\em some},

not-necessarily-linear ``product reconstruction function\'\'. {\\em Is the resulting notion equivalent to

multiplicative linear secret sharing?} We show the (perhaps somewhat counter-intuitive) result that this relaxed notion is strictly {\\em more general}.

Concretely, fix a finite field $\\FF_q$ as the base field $\\FF_q$ over which linear secret sharing is considered.

Then we show there exists an (exotic) linear secret sharing scheme with an unbounded number of players $n$

such that it has $t$-privacy with $t\\approx \\sqrt{n}$

and such that it does admit a product reconstruction function, yet this function is {\\em necessarily} nonlinear. Our proof is based on

combinatorial arguments involving bilinear forms. It extends to similar separation results for important variations,

such as strongly multiplicative secret sharing.



21:17 [Pub][ePrint] A Comparison of Double Point Multiplication Algorithms and their Implementation over Binary Elliptic Curves, by Reza Azarderakhsh and Koray Karabina

  Efficient implementation of double point multiplication is crucial for elliptic curve cryptographic systems. We revisit three recently proposed simultaneous double point multiplication algorithms. We propose hardware architectures for these algorithms, and provide a comparative analysis of their performance. We implement the proposed architectures on Xilinx Virtex-4 FPGA, and report on the area and time results . Our results indicate that differential addition chain based algorithms are better suited to compute double point multiplication over binary elliptic curves for both high performance and resource constrained applications.



21:17 [Pub][ePrint] Improvement of One Anonymous Identity-Based Encryption, by Zhengjun Cao and Lihua Liu

  In 2009, Seo et al. proposed an anonymous hierarchical identity-based

encryption (IBE). The ciphertext consists of $(C_1, C_2, C_3, C_4)$, where $C_1$ is the blinded message, $C_4$ is the blinded identity,

both $C_2$ and $C_3$ are used as decrypting helpers. To prove its security, the authors defined five games and introduced a strong simulator who is able to select different Setups for those games.

In this paper, we optimize the IBE scheme by removing one decrypting helper and the strong simulator. We show its security under the $\\ell$-computational Diffie-Hellman assumption with a normal simulator who only requires a unique Setup.



21:17 [Pub][ePrint] A Formal Proof of Countermeasures against Fault Injection Attacks on CRT-RSA, by Pablo Rauzy and Sylvain Guilley

  In this article, we describe a methodology that aims at either breaking or proving the security of CRT-RSA algorithms against fault injection attacks. In the specific case-study of BellCoRe attacks, our work bridges a gap between formal proofs and implementation-level attacks. We apply our results to three versions of CRT-RSA, namely the naive one, that of Shamir, and that of Aumüller et al. Our findings are that many attacks are possible on both the naive and the Shamir implementations, while the implementation of Aumüller et al. is resistant to all fault attacks with one fault. However, we show that the countermeasure is not minimal, since two tests out of seven are redundant and can simply be removed.