Attribute-Based Encryption for Circuits from Multilinear Maps, by Sanjam Garg and Craig Gentry and Shai Halevi and Amit Sahai and Brent Waters
In this work, we provide the first construction of Attribute-Based
Encryption (ABE) for general circuits. Our construction is based on
the existence of multilinear maps. We prove selective security of
our scheme in the standard model under the natural multilinear
generalization of the BDDH assumption. Our scheme achieves both
Key-Policy and Ciphertext-Policy variants of ABE.
Our scheme and its proof of security directly translate to the recent multilinear map
framework of Garg, Gentry, and Halevi.
This paper is the result of a merge of the works of Garg, Genry, and Halevi and of Sahai and Waters,
and subsumes both these works.
An Ideal-Security Protocol for Order-Preserving Encoding, by Raluca Ada Popa and Frank H. Li and Nickolai Zeldovich
Order-preserving encryption - an encryption scheme where the sort order of ciphertexts matches the sort order of the corresponding plaintexts - allows databases and other applications to process queries involving order over encrypted data efficiently. The ideal security guarantee for order-preserving encryption put forth in the literature is for the ciphertexts to reveal no information about the plaintexts besides order. Even though more than a dozen schemes were proposed, all these schemes leak more information than order.
This paper presents the first order-preserving scheme that achieves ideal security. Our main technique is mutable cipher- texts, meaning that over time, the ciphertexts for a small number of plaintext values change, and we prove that mutable ciphertexts are needed for ideal security. Our resulting protocol is interactive, with a small number of interactions.
We implemented our scheme and evaluated it on microbenchmarks and in the context of an encrypted MySQL database application. We show that in addition to providing ideal security, our scheme achieves 1-2 orders of magnitude higher performance than the state-of-the-art order-preserving encryption scheme, which is less secure than our scheme.
Assistant Professor Position, Crypto Group - University of Versailles-St-Quentin-en-Yvelines (France)
In view of its ongoing development, the crypto group of the University of Versailles St-Quentin-en-Yvelines (France) invites applications for the following full-time position.
A faculty position at the tenured Assistant Professor (\\\"Maître de Conférences\\\") level is open to highly qualified candidates who are committed to a career in research and teaching. Preference will be given to candidates with strong research achievements in one or several of the areas related to the general fields of cryptology and/or information security.
Responsibilities include research, supervision of undergraduates and graduate students, preparation and management of research projects, and teaching in various study programs.
IMPORTANT NOTE: A \\\"qualification aux fonctions de Maître de Conférences\\\" certificate from to the French \\\"Conseil National des Universités\\\" is usually required to apply. However candidates who already hold an Assistant Professor (or equivalent) position may be exempted from this certificate.
Post-Doc, University of Waterloo, Canada
The Cryptography, Security, and Privacy (CrySP) research group at the University of Waterloo is seeking applications for a postdoctoral research position in the field of security and privacy for location-based or mobile systems and applications. This position will be held in the Cheriton School of Computer Science, and there will be the possibility for collaboration with Google Waterloo.
Applicants must hold a PhD in a related field and should have a convincing publication record.
The start date of the position is negotiable. The position may be for one or two years.
Applicants should submit a CV, a research plan, two or three selected papers, and the names and contact information of three references.
Ph.D. student, Radboud University Nijmegen, the Netherlands, European Union
The Digital Security (DS) group of RU Nijmegen has a PhD position in side-channel analysis and countermeasure design and implementation.
Candidates should have a Master’s degree in computer science, applied mathematics or engineering with strong interest in algorithms and signal processing. Prior experience in side-channel analysis and embedded software or hardware design is an asset.
This research addresses potential threats within the scope of side-channel analysis and fault injection. The successful candidate will contribute to a research project entitled Side-channel resistant devices for pervasive security (SIDES), which is funded by STW. The project is a joint collaboration with Riscure.
Conditions of employment
The position is for 4 years, the expected starting date is flexible, preferably not later than September. Salary is 2042-2612 euro/month.
Candidates moving to the Netherlands from abroad may qualify for a tax incentive scheme, where 30% of your income is tax free.
For additional information about the DS group, see http://www.ru.nl/ds
Integrated circuit designer, PhD, INVIA, Aix en Provence, France
INVIA provides security-related semiconductor design IP and embedded software to ASIC and FPGA designers. Our customers are semiconductor vendor and OEM addressing markets where security is a key requirement.
The integrated circuit designer will work in the R&D digital team and will contribute to the development of innovative IP for secure products. Main activities include various technical aspects as target specifications, technology survey, architecture, concept, IP development and validation, prototyping, IP packaging, documentation, etc.
He could be also visible from customers side in relationship with Invia marketing through market needs enquiries, technical meeting, deliveries to the customer, field support, etc.
PhD Degree in digital IC design, cryptography, MSc Degree in electrical engineering or equivalent.
Permanent position. The gross income depends on the experience level. Min package is about 40,000 EUR per year.