Earticle

초록

영어

Bitcoin (BTC) is a type of cryptocurrency that supports transaction/payment of virtual money between BTC users without the presence of a central authority or any third party like bank. It uses some cryptographic techniques namely public- and private-keys, digital signature and cryptographic-hash functions, and they are used for making secure transactions and maintaining distributed public ledger called blockchain. In BTC system, each transaction signed by sender is broadcasted over the P2P (Peer-to-Peer) Bitcoin network and a set of such transactions collected over a period is hashed together with the previous block/other values to form a block known as candidate block, where the first block known as genesis-block was created independently. Before a candidate block to be the part of existing blockchain (chaining of blocks), a computation-intensive hard problem needs to be solved. A number of miners try to solve it and a winner earns some BTCs as inspiration. The miners have high computing and hardware resources, and they play key roles in BTC for blockchain formation. This paper mainly analyses the underlying cryptographic techniques, identifies some weaknesses and proposes their enhancements. For these, two modifications of BTC are suggested ― (i) All BTC users must use digital certificates for their authentication and (ii) Winning miner must give signature on the compressed data of a block for authentication of public blocks/blockchain.

목차

ABSTRACT
Ⅰ. Introduction
Ⅱ. Literature Review and BTC Cryptocurrency
2.1. Literature Review
2.2. Bitcoin Cryptocurrency Basics
Ⅲ. Proposed Enhancement of BTC Cryptocurrency
3.1. Enhancement of BTC Transaction
3.2. Enhancement of BTC Blockchain
Ⅳ. Conclusions

저자

• Anindya Kumar Biswas [ Ph.D. Scholar, Department of Computer Application, NIT Raipur, India ] Corresponding Author
• Mou Dasgupta [ Assistant Professor, Department of Computer Application, NIT Raipur, India ]

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