Udaya Parampalli

Efficient dynamic multi-replica auditing for the cloud with geographic location

Haiyang Yu, Zhen Yang, Muhammad Waqas, Shanshan Tu, Zhu Han, Zahid Halim, Richard O Sinnott, Udaya Parampalli

Journal article  |  2021  |  FUTURE GENERATION COMPUTER SYSTEMS-THE INTERNATIONAL JOURNAL OF ESCIENCE

Data backup is a pervasive strategy adopted by cloud service providers (CSPs) to avoid potential risks of data loss. As a result, ..

A new family of polyphase sequences with low correlation

Zhi Gu, Zhengchun Zhou, Sihem Mesnager, Udaya Parampalli

Journal article  |  2021  |  CRYPTOGRAPHY AND COMMUNICATIONS-DISCRETE-STRUCTURES BOOLEAN FUNCTIONS AND SEQUENCES

Sequences with low correlation have important applications in communications, radar, cryptography, and also in compressed sensing...

Cryptanalysis of the class of maximum period galois NLFSR-based stream ciphers

Ge Yao, Udaya Parampalli

Journal article  |  2021  |  CRYPTOGRAPHY AND COMMUNICATIONS-DISCRETE-STRUCTURES BOOLEAN FUNCTIONS AND SEQUENCES

Espresso cipher is designed targeting 5G wireless communication systems. To achieve high efficiency, a maximum period Galois NLFSR..

Improved transformation algorithms for generalized Galois NLFSRs

Ge Yao, Udaya Parampalli

Journal article  |  2021  |  CRYPTOGRAPHY AND COMMUNICATIONS-DISCRETE-STRUCTURES BOOLEAN FUNCTIONS AND SEQUENCES

The transformation algorithm for Nonlinear Feedback Shift Registers (NLFSRs) converts NLFSRs between Fibonacci and Galois configur..

CAPACITY-ACHIEVING PRIVATE INFORMATION RETRIEVAL SCHEME WITH A SMALLER SUB-PACKETIZATION

Wenqin Zhang, Zhengchun Zhou, Udaya Parampalli, Vladimir Sidorenko

Journal article  |  2021  |  ADVANCES IN MATHEMATICS OF COMMUNICATIONS

Private information retrieval (PIR) allows a user to retrieve one out of M messages from N servers without revealing the identity ..

Efficient privacy-preserving frequent itemset query over semantically secure encrypted cloud database

Wei Wu, Ming Xian, Udaya Parampalli, Bin Lu

Journal article  |  2021  |  WORLD WIDE WEB-INTERNET AND WEB INFORMATION SYSTEMS

In recent years, more users tend to use data mining as a service (DMaaS) provided by cloud service providers. However, while enjoy..

Special section on signal design and its applications in communications

U Parampalli, H Habuchi, H Torii, YS Han, Z Zhou, S Araki, X Tang, T Matsumoto, S Uehara, J Zheng, Y Nogami, P Fan, T Kojima

Journal article  |  2021  |  IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences

A Tighter Correlation Lower Bound for Quasi-Complementary Sequence Sets with Low Correlation Zone

Bing Liu, Zhengchun Zhou, Udaya Parampalli

Journal article  |  2021  |  IEICE TRANSACTIONS ON FUNDAMENTALS OF ELECTRONICS COMMUNICATIONS AND COMPUTER SCIENCES

Inspired by an idea due to Levenshtein, we apply the low correlation zone constraint in the analysis of the weighted mean square a..

Two classes of optimal LRCs with information (r, t)-locality

Pan Tan, Zhengchun Zhou, Vladimir Sidorenko, Udaya Parampalli

Journal article  |  2020  |  Designs, Codes and Cryptography

Locally repairable codes (LRCs) with (r, t)-locality have received considerable attention in recent years, since they are able to ..

A New Evaluation Method for Medical Image Information Hiding Techniques

Peter Eze, Udaya Parampalli, Robin Evans, Dongxi Liu

Conference Proceedings  |  2020  |  42ND ANNUAL INTERNATIONAL CONFERENCES OF THE IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY: ENABLING INNOVATIVE TECHNOLOGIES FOR GLOBAL HEALTHCARE EMBC'20

Medical image scans and associated electronic medical records (EMR) could be stored locally or transmitted for use in autodiagnosi..