CIS

Blockchain’s Time-stamping – A Look at the Past and a Glimpse Into the Future

In Kazuhiro Gomi’s latest Forbes article, he reviews the time-stamping origins of blockchain and points to smart contracts as a barometer of blockchain’s viability outside of the cryptocurrency realm. He also notes that blockchain is a work in progress. Academics are identifying theoretical weaknesses and pointing out ways to increase its efficiency. And many of …

Blockchain’s Time-stamping – A Look at the Past and a Glimpse Into the Future Read More »

Defining the Future of Security: Tatsuaki Okamoto on Cryptography Contributions, Favorite Articles and CIS Lab Goals

Dr. Tatsuaki Okamoto is the Director of the NTT Research Cryptography & Information Security (CIS) Laboratory. An NTT Fellow, Dr. Okamoto has made extensive contributions to the field of cryptography. He has previously served as President of the Japan Society for Industrial and Applied Mathematics (JSIAM), Director of the International Association of Cryptology Research (IACR), …

Defining the Future of Security: Tatsuaki Okamoto on Cryptography Contributions, Favorite Articles and CIS Lab Goals Read More »

NTT Co-authored Papers at FC21 Reveal Risks and Boost Efficiencies

Topics Include Selfish Mining Attacks, Differential Privacy and Block Confirmation in the Sleepy Model Sunnyvale, Calif. – February 24, 2021 – NTT Research, Inc., a division of NTT (TYO:9432), and NTT Secure Platform Laboratories, today announced that three papers co-authored by scientists in their groups will be presented at Financial Cryptography and Data Security 2021 (FC21), a virtual …

NTT Co-authored Papers at FC21 Reveal Risks and Boost Efficiencies Read More »

Some Good (Cryptography) News

Few people know much about cryptography. What the public learns, from headlines and advertisements that often exploit those headlines, is that existing cryptosystems seem to break fairly often. In his latest article for Forbes, NTT Research President and CEO, Kazuhiro Gomi, points to three counter examples of cybersecurity actually tightening: 1) a breakthrough in “indistinguishability …

Some Good (Cryptography) News Read More »

Cryptography Paper Puts iO on Terra Firma

By NTT Research CIS Lab In cryptography, well-founded assumptions are generally preferable to clever or especially hard ones. This may sound counter-intuitive, but the weaker and more well-founded the assumption, the more believable the outcome.  In that light, one popular cryptographic concept, indistinguishability obfuscation (iO), found itself in trouble. According to the authors of a …

Cryptography Paper Puts iO on Terra Firma Read More »

Marching Toward More Efficient Proof Systems: A Chat with Justin Holmgren

By NTT Research Staff Dr. Justin Holmgren joined NTT Research as a scientist in the Cryptography & Information Security (CIS) Lab in May 2020. He was previously a Google Research Fellow at the Simons Institute for the Theory of Computing at UC Berkeley and as a Postdoctoral Research Fellow at Princeton University. He studied mathematics …

Marching Toward More Efficient Proof Systems: A Chat with Justin Holmgren Read More »

NTT Research, UCLA and University of Washington Applaud Cryptographers for Indistinguishability Obfuscation Breakthrough

Paper Solves 20-Year-Old Problem, Sets Theoretical Foundation for Stronger Cryptography Palo Alto, Calif. – September 30, 2020 – NTT Research, Inc., a division of NTT (TYO:9432), along with UCLA and the University of Washington, today announced that a paper co-authored by cryptographers affiliated with their respective institutions has solved a two-decade-old problem involving indistinguishability obfuscation, …

NTT Research, UCLA and University of Washington Applaud Cryptographers for Indistinguishability Obfuscation Breakthrough Read More »

NTT Research and Stanford Join Forces on Cryptography and Blockchain Research

By NTT Research staff NTT Research is working with institutions all over the world, but even as virtual encounters have become the norm, proximity still has value. Thus, we were pleased to reach a joint research agreement with Stanford University, one of our neighbors here in Silicon Valley. Over the next four years, which we …

NTT Research and Stanford Join Forces on Cryptography and Blockchain Research Read More »

Crypto 2020 Best Paper Award: Chosen Ciphertext Security

By Brent Waters At this year’s Crypto 2020 (virtual) conference, a paper that I co-authored won a Best Paper award. My co-authors were Dr. Susan Hohenberger, a research professor in the Information Security Group at the Johns Hopkins Whiting School of Engineering, and Ventaka Koppula, a member of the faculty of the Department of Computer …

Crypto 2020 Best Paper Award: Chosen Ciphertext Security Read More »

NTT Research Collaboration Advances Cryptography and Blockchain Research

NTT Research CIS Lab Focused on Information Security Announces Joint Research Agreement Palo Alto, Calif. – August 31, 2020 – NTT Research, Inc., a division of NTT (TYO:9432), today announced that its Cryptography and Information Security (CIS) Lab has reached a joint research agreement with Stanford University. The four-year agreement with Stanford covers basic and fundamental research topics of …

NTT Research Collaboration Advances Cryptography and Blockchain Research Read More »