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A Lightweight Blockchain for the Internet of Medical Things Using hash-based message authentication codes 19

A Lightweight Blockchain for the Internet of Medical Things ...

引用

19th IEEE International Wireless Communications and Mobile Computing (IEEE IWCMC)

作者： Panasenko, Sergey Co Aktiv Moscow Russia

ISBN: (纸本)9798350333398

Blockchains allow to create and maintain distributed immutable registries of data. The internet of things (IoT) is one of possible applications, where blockchain technologies are demanded. Due to their properties and possibilities, blockchains can essentially improve characteristics of IoT systems in many applications, therefore at the moment a lot of attempts are made to adopt blockchains to use them in the IoT (including the internet of medical things (IoMT) that is a particular case of the IoT). One of the main approaches of such adoption is creating lightweight blockchains optimized for specific cases of use. In this paper, we propose a scheme of a lightweight blockchain for processing the data in the IoMT with low-resourced sensor devices. Our scheme is built upon the use of hash-based message authentication codes (HMAC) to provide the integrity and authenticity of circulated data and on a simplistic consensus algorithm that is adequate to the use scenario.

关键词： hash-based message authentication codes Internet of Medical Things Lightweight Blockchain Round Robin Consensus

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NMACA Approach Used to Build a Secure message authentication Code

NMACA Approach Used to Build a Secure Message Authentication...

引用

International Conference on Security Technology/International Conference on Disaster Recovery and Business Continuity

作者： Alosaimy, Raed Alghathbar, Khaled Hafez, Alaaeldin M. Eldefrawy, Mohamed H. King Saud Univ Ctr Excellence Informat Assurance CoEIA Riyadh 11451 Saudi Arabia

ISBN: (纸本)9783642176098

Secure storage systems should consider the integrity and authentication of long-term stored information. When information is transferred through communication channels, different types of digital information can be represented, such as documents, images, and database tables. The authenticity of such information must be verified, especially when it is transferred through communication channels. authentication verification techniques are used to verify that the information in an archive is authentic and has not been intentionally or maliciously altered. In addition to detecting malicious attacks, verifying the integrity also identifies data corruption. The purpose of message authentication Code (MAC) is to authenticate messages, where MAC algorithms are keyed hash functions. In most cases, MAC techniques use iterated hash functions, and these techniques are called iterated MACs. Such techniques usually use a MAC key as an input to the compression function, and this key is involved in the compression function, f, at every stage. Modification detection codes (MDCs) are un-keyed hash functions, and are widely used by authentication techniques such as MD4, MD5, SHA-1, and RIPEMD-160. There have been new attacks on hash functions such as MD5 and SHA-1, which requires the introduction of more secure hash functions. In this paper, we introduce a new MAC methodology that uses an input MAC key in the compression function, to change the order of the message words and shifting operation in the compression function. The new methodology can be used in conjunction with a wide range of modification detection code techniques. Using the SHA-1 algorithm as a model, a new (SHA-1)-MAC algorithm is presented. The (SHA-1)-MAC algorithm uses the MAC key to build the hash functions by defining the order for accessing source words and defining the number of bit positions for circular left shifts.

关键词： Secure hash Algorithm hash-based message authentication codes

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