Data Mining Over Encrypted Big Data Using Rings and Noncommutative Generalizations of PollyCracker Schemes
Delaram Kahrobaei
The City University of New York, USA
Date: 13 Jul 2017,
Time: 15:0016:00,
Room: 2600/332
In the first of part of my talk, I will talk about datamining over encrypted big data. This part proposes ideas of using combinatorial algebra for Fully Homomorphic Encryption.
Homomorphic encryption is a form of encryption which allows various types of computations to be carried out on ciphertext and generate an encrypted result which, when decrypted, matches the result of operations performed on the plaintext. This is a desirable feature in modern communication system architectures. Homomorphic encryption would allow chaining together different services without exposing the data to each of those services. The homomorphic property of various cryptosystems can be used, in particular, to create private information retrieval schemes and enable widespread use of cloud computing by ensuring the confidentiality of processed data. In this talk, I will present an efficient Fully Homomorphic Encryption (FHE) scheme using noncommutative algebraic structure. I will also discuss applications that enables doing various machine learning and statistical analysis over encrypted big data. There has been some experiments carried out over medical data particularly. This is a joint work with V. Shpilrain In the second part of my talk, I will talk about noncommutative generalizations of PollyCracker cryptosystems. Some variations of PollyCracker cryptosystems have been proposed as postquantum resistant as well as fully homomorphic encryption, mainly by PolSys team. This part of my talk is a joint ongoing project with D. Savchuck and V. Shpilrain. 
Fast(er) linear algebra on multivariate Hankel matrices
Bernard Mourrain
AROMATH, Inria Sophia Antipolis Mediterranee
Date: 17 Noe 2016,
Time: 11:0012:00,
Room: 2600/101

Symbolic Determinants support Numerical Methods
Christoph Koutschan
Johann Radon Institute for
Computational and Applied Mathematics (RICAM), Linz
Austria
Date: 8 Noe 2016,
Time: 11:0012:00,
Room: 2526/105

You can contact JeanCharles FaugĂ¨re or Elias Tsigaridas if you want to give a talk.
If you are interested in receiving email announcements of upcoming talks then join PolSys diffusion list or send us an email.