A comparative study of Message Digest 5(MD5) and SHA256 algorithm

Rachmawati, Dian; Tarigan, Jos Timanta; Ginting, Ardi Betesda Clinta

doi:10.1088/1742-6596/978/1/012116

Cited by 109 publications

(53 citation statements)

References 2 publications

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“…So, in terms of storage, applying SHA-256 will increase the storage by 100% and if SHA-512 is used then storage will be increased by 400% compared to MD5. As per the findings of the authors of [26], it can be deduced that it takes an average of 1.85e-07 seconds and 5.07e-07 seconds per byte size input data execution in MD5 and SHA-256 respectively when an Intel(R) Core(TM) i5-2430M CPU @ 2,40GHz (4CPUs), 2.4 GHz architecture with 8.00 GB RAM is used. It means that SHA-256 takes approximately 2.7 times the time needed to execute the same input data compared to MD5.…”

Section: ) Computation Powermentioning

confidence: 74%

“…The challenges and issues faced by the Internet of Things network are also addressed in [25]. The time complexity of MD5 and SHA-256 is (N ) and in terms of computation time, MD5 takes lesser time compared to the SHA-256 [26]. The output of the MD5 is 32 digit Hex irrespective of the input file size and likewise for SHA-256, the output is 64 digit Hex.…”

Section: ) Computation Powermentioning

confidence: 99%

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Will Blockchain Technology Become a Reality in Sensor Networks?

Marchang

Ibbotson

Wheway

2019

2019 Wireless Days (WD)

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The need for sensors to deliver, communicate, collect, alert, and share information in various applications has made wireless sensor networks very popular. However, due to its limited resources in terms of computation power, battery life and memory storage of the sensor nodes, it is challenging to add security features to provide the confidentiality, integrity, and availability. In order to communicate reliably with trust and authenticity, providing data and system security especially for those sensors dealing with sensitive data related to healthcare, military activity, environmental sensing for weather prediction or seismic data etc. is vital. Blockchain technology ensures security and avoids the need of any trusted third party for security. However, applying Blockchain in a resource-constrained wireless sensor network is a challenging task because Blockchain is power, computation, and memory hungry in nature and demands heavy bandwidth due to control overheads. In this paper, a new routing and a private communication Blockchain framework is designed and tested with sensors generating constant and continuous data (like voice and video). However, it is realized that even if computation and bandwidth requirements are taken for granted, storage and battery life will cripple the sustainability of Blockchain application in sensor networks especially for high data generating sensors. The proposed Load Balancing Multi-Hop (LBMH) routing shares and enhances the battery life of the Cluster Heads and reduce control overhead during Block updates, but due to limited storage and energy of the sensor nodes, Blockchain in sensor networks may never be a reality unless storage and battery life of sensor devices are not limited on the one hand and computation power and bandwidth availability are high, on the other.

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Section: ) Computation Powermentioning

confidence: 74%

Section: ) Computation Powermentioning

confidence: 99%

Will Blockchain Technology Become a Reality in Sensor Networks?

Marchang

Ibbotson

Wheway

2019

2019 Wireless Days (WD)

View full text Add to dashboard Cite

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“…The SHA256 algorithm can generate a 256-bit long hash value for data of any length [33]. A hash value is a unique and extremely compact numerical representation of a piece of data.…”

Section: Store Data On-chain and Out-of-chainmentioning

confidence: 99%

Design of personnel big data management system based on blockchain

Chen

Song

2019

Future Generation Computer Systems

169

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h i g h l i g h t s• A method for solving blockchain information redundancy is proposed.• Analyze the shortcomings of the blockchain and the reasons for it. • Feasibility of combining blockchain with information management system. • Developed a prototype system to validate our ideas. a b s t r a c tWith the continuous development of information technology, enterprises, universities and governments are constantly stepping up the construction of electronic personnel information management system. The information of hundreds of thousands or even millions of people's information are collected and stored into the system. So much information provides the cornerstone for the development of big data, if such data is tampered with or leaked, it will cause irreparable serious damage. However, in recent years, electronic archives have exposed a series of problems such as information leakage, information tampering, and information loss, which has made the reform of personnel information management more and more urgent. The unique characteristics of the blockchain, such as non-tampering and traceability make it have great application potential in personnel information management, and can effectively solve many problems of traditional file management. However, the blockchain is limited by its own shortcomings such as small storage space and slow synchronization time, and cannot be directly applied to the big data field. This paper proposes a personnel management system based on blockchain, we analyzed the defects of the blockchain and proposed an improved method, constructs a novel data storage model of on-chain and out-of-chain that can effectively solve the problem of data redundancy and insufficient storage space. Based on this, we developed a prototype system with query, add, modify, and track personnel information, verified the feasibility of applying blockchain to personnel information management, explore the possibility of combining blockchain with big data.

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“…The Proof-of-Work mechanism in permission less Blockchain uses SHA-256 to compute BH. The time complexity of SHA-256 is O(n) [6]. For a Miner to compute BH, he/she has to check 2 256 hashes out of which only 2 k hashes are valid, where k is the number of zeroes specified by condition C. For a user to become a Miner, he/she has to compute hashes at a rate of 17.2 Th/sec as of today to achieve break even.…”

Section: Performance Of Proof-of-work With Sha-256mentioning

confidence: 99%

An Efficient Proof-of-Work Mechanism for Computational Feasibility in Blockchain

2019

IJITEE

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Recently, Blockchain technology created a buzz in technological world and gained importance as a solution that offers the realization of multiple authoritative domains, where economic transactions are guaranteed. It is very important for such technology to validate the transactions performed by different users flawlessly. To maintain such a trust, Blockchain uses different consensus protocols, where different miners follow them to validate transactions and mine a new block. One such consensus protocol is proof-of-work, where a miner has to solve a puzzle with his computational capabilities. The existing proof-of work mechanisms discriminates a normal user to participate in the mining procedure, as he needs to maintain a specialized hardware which is expensive. In this paper, we propose a new algorithm on basis of crypto-puzzle Integer Prime Factorization, for proof-of-work consensus, which makes a user with minimal hardware capabilities to participate in the mining procedure

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A comparative study of Message Digest 5(MD5) and SHA256 algorithm

Cited by 109 publications

References 2 publications

Will Blockchain Technology Become a Reality in Sensor Networks?

Will Blockchain Technology Become a Reality in Sensor Networks?

Design of personnel big data management system based on blockchain

An Efficient Proof-of-Work Mechanism for Computational Feasibility in Blockchain

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