Invited Talk 1

Kaoru Kurosawa,
Ibaraki University,
“How to Keyword-Search Securely in Cloud Storage Service”

Abstract. Cloud storage service is now available. It is provided by big Internet enterprises such as Google, Amazon, Yahoo, Dropbox and etc. In such systems, the role of cryptography will be crucial. A searchable symmetric encryption (SSE) scheme is a symmetric-key encryption scheme such that a client can efficiently retrieve some of the encrypted files containing (or indexed by) specific keywords, keeping the keywords themselves secret (ideally without leaking any information to the server). In this talk, we first formulate the UC-security of SSE schemes, and present an efficient construction. We next show a multiple keyword search SSE scheme such that even the search formula (AND, OR and so on) is kept secret. It is based on an extended garbled circuit which satisfies “label-reusable privacy”.

Affiliation and short biography. Kaoru Kurosawa was a Professor in Tokyo Institute of Technology from 1997 to 2001. He is currently a Professor at Ibaraki University. He was Program Chair for Asiacrypt 2007, ICITS 2009, ProvSec 2010 and PKC 2013. He received the excellent paper award of IEICE in 1981, Telecom System Scientific Award of Telecommnucations Avdancement Foundation in 2006, Achievement Award of IEICE in 2007 and Information Security Cultural Prize in 2009.

Invited Talk 2

Bart Preneel,
Katholieke Universiteit Leuven,
“Post-Snowden Cryptography”

Abstract. In this talk we analyze what security experts can learn from the documents leaked by Snowden in the past 18 months. More in particular, we discuss how these revelations impact our understanding of the security of our information infrastructure. We also evaluate how sophisticated attackers can bypass or undermine cryptography. We conclude by analyzing how these revelations affect future research and standards in cryptology, information security and privacy.

Affiliation and short biography. Prof. Bart Preneel is a full professor at the KU Leuven; he heads the COSIC research group, that is a member of the iMinds Security Department. He was visiting professor at five universities in Europe. He has authored more than 400 scientific publications and is inventor of 4 patents. His main research interests are cryptography, information security and privacy. Bart Preneel has coordinated the Network of Excellence ECRYPT, has served as panel member and chair for the European Research Council and has been president of the IACR (International Association for Cryptologic Research). He is a member of the Permanent Stakeholders group of ENISA (European Network and Information Security Agency) and of the Academia Europaea. He has been invited speaker at more than 90 conferences in 40 countries. In 2014 he received the RSA Award for Excellence in the Field of Mathematics.