Cloud computing has become an integral part of IT services, storing the application softwares and databases in large centralized shared data servers. Since it’s a shared platform, the data and services may not be fully trust worthy. In this work, we have implemented an efficient security model that ensures the data integrity of stored data in cloud servers. The computational load of data verifi...

As the basis of cloud computing, distributed storage technology mainly studies how data centers store, organize and manage data. Blockchain has become most secure solution for due to its decentralization immutability. Consensus mechanism is one core technologies blockchain, which affects transaction processing capability, security scalability blockchain. The current mainstream consensus algorit...

Designing efficient, economical heterogeneous catalysts for the Knoevenagel condensation reaction is highly significant owing to importance of products in industries as well pharmaceutics. Herein, we have designed and synthesized biguanidine-functionalized basic magnetically retrievable cobalt ferrite nanoparticles (CFNPs) synthesis using benzaldehydes active methylene compounds (malononitrile/...

Seismic interferometry is often proposed as a cost-efficient technique for reservoir monitoring including CO2 sequestration due to its low cost and environmental advantages over active source imaging. Although many studies have demonstrated the ability of seismic retrieve surface waves, body wave imaging remains challenging their generally lower amplitudes waves in data. An optimum data acquisi...

Nuclear waste management is a contested challenge that lasts for decades. Especially in Germany, the history of usage nuclear energy conflictive and notions justice are therefore omnipresent ongoing site selection process repository. Against background injustices caused by deployment energy, such as obligation current generations to deal with waste, questions how justly find just repository ari...

Private information retrieval protocols guarantee that a user can privately and xmlns:xlink="http://www.w3.org/1999/xlink">losslessly retrieve single file from database stored across multiple servers. In this work, we propose to simultaneously relax the conditions of perfect retrievability ...

Nowadays, blockchain bloat is an endangering issue caused by inefficient transaction storage mechanisms. Based on the Distributed File System (DFS), network can reduce local to solve problem. However, storing all blocks DFS not durable or scalable. Hence, classifying into hot and cold was adopted in previous works. The nodes time consumption locally. works are able periodically check block inte...

Time-lock puzzles are elegant protocols that enable a party to lock message such no one else can unlock it until certain time elapses. Nevertheless, existing schemes not suitable for the case where server is given multiple instances of puzzle scheme at once and must them different points in time. If naively used this setting, then has start solving all as soon receives them, ultimately imposes ...