1,599 research outputs found
Security Enhancement of IoT and Fog Computing Via Blockchain Applications
Blockchain technology is now becoming highly appealing to the next generation because it is better tailored to the information age. Blockchain technologies can also be used in the Internet of Things (IoT) and fog computing. The development of IoT and Fog Computing technologies in different fields has resulted in a major improvement in distributed networks. Blockchain technology is now becoming highly appealing to the next generation because it is better tailored to the information age. Blockchain technologies can also be used in IoT and fog computing. The blockchain principle necessitates a transparent data storage mechanism for storing and exchanging data and transactions throughout the network. In this paper, first, we explained Blockchain, its architecture, and its security. Then we view Blockchain application in IoT security. Then we explained Fog computing, Generic Security Requirements for Fog Computing, and we also discuss Blockchain applications that enhance Fog Computing Security. Finally, we conduct a review of some recent literature on using Blockchain applications to improve the security of IoT and fog computing and a comparison of the methods proposed in the literature
Advances in Information Security and Privacy
With the recent pandemic emergency, many people are spending their days in smart working and have increased their use of digital resources for both work and entertainment. The result is that the amount of digital information handled online is dramatically increased, and we can observe a significant increase in the number of attacks, breaches, and hacks. This Special Issue aims to establish the state of the art in protecting information by mitigating information risks. This objective is reached by presenting both surveys on specific topics and original approaches and solutions to specific problems. In total, 16 papers have been published in this Special Issue
Security and Privacy for Green IoT-based Agriculture: Review, Blockchain solutions, and Challenges
open access articleThis paper presents research challenges on security and privacy issues in the field of green IoT-based agriculture. We start by describing a four-tier green IoT-based agriculture architecture and summarizing the existing surveys that deal with smart agriculture. Then, we provide a classification of threat models against green IoT-based agriculture into five categories, including, attacks against privacy, authentication, confidentiality, availability, and integrity properties. Moreover, we provide a taxonomy and a side-by-side comparison of the state-of-the-art methods toward secure and privacy-preserving technologies for IoT applications and how they will be adapted for green IoT-based agriculture. In addition, we analyze the privacy-oriented blockchain-based solutions as well as consensus algorithms for IoT applications and how they will be adapted for green IoT-based agriculture. Based on the current survey, we highlight open research challenges and discuss possible future research directions in the security and privacy of green IoT-based agriculture
‘Enhanced Encryption and Fine-Grained Authorization for Database Systems
The aim of this research is to enhance fine-grained authorization and encryption
so that database systems are equipped with the controls necessary to help
enterprises adhere to zero-trust security more effectively. For fine-grained
authorization, this thesis has extended database systems with three new
concepts: Row permissions, column masks and trusted contexts. Row
permissions and column masks provide data-centric security so the security
policy cannot be bypassed as with database views, for example. They also
coexist in harmony with the rest of the database core tenets so that enterprises
are not forced to compromise neither security nor database functionality. Trusted
contexts provide applications in multitiered environments with a secure and
controlled manner to propagate user identities to the database and therefore
enable such applications to delegate the security policy to the database system
where it is enforced more effectively. Trusted contexts also protect against
application bypass so the application credentials cannot be abused to make
database changes outside the scope of the application’s business logic. For
encryption, this thesis has introduced a holistic database encryption solution to
address the limitations of traditional database encryption methods. It too coexists
in harmony with the rest of the database core tenets so that enterprises are not
forced to choose between security and performance as with column encryption,
for example. Lastly, row permissions, column masks, trusted contexts and holistic
database encryption have all been implemented IBM DB2, where they are relied
upon by thousands of organizations from around the world to protect critical data
and adhere to zero-trust security more effectively
Blockchain Application on the Internet of Vehicles (IoV)
With the rapid development of the Internet of Things (IoT) and its potential
integration with the traditional Vehicular Ad-Hoc Networks (VANETs), we have
witnessed the emergence of the Internet of Vehicles (IoV), which promises to
seamlessly integrate into smart transportation systems. However, the key
characteristics of IoV, such as high-speed mobility and frequent disconnections
make it difficult to manage its security and privacy. The Blockchain, as a
distributed tamper-resistant ledge, has been proposed as an innovative solution
that guarantees privacy-preserving yet secure schemes. In this paper, we review
recent literature on the application of blockchain to IoV, in particular, and
intelligent transportation systems in general
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