Detecting Brute-Force Attacks on Cryptocurrency Wallets
| Autor: | Aleksey Fedorov, Mikhail A. Kudinov, Evgeniy O. Kiktenko |
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| Rok vydání: | 2019 |
| Předmět: |
Cryptocurrency
Computer science business.industry Hash function 020206 networking & telecommunications Cryptography 02 engineering and technology Computer security computer.software_genre Digital signature Brute-force attack Distributed ledger 0202 electrical engineering electronic engineering information engineering 020201 artificial intelligence & image processing business Protocol (object-oriented programming) computer Vulnerability (computing) |
| Zdroj: | Business Information Systems Workshops ISBN: 9783030366902 BIS (Workshops) |
| Popis: | Blockchain is a distributed ledger, which is protected against malicious modifications by means of cryptographic tools, e.g. digital signatures and hash functions. One of the most prominent applications of blockchains is cryptocurrencies, such as Bitcoin. In this work, we consider a particular attack on wallets for collecting assets in a cryptocurrency network based on brute-force search attacks. Using Bitcoin as an example, we demonstrate that if the attack is implemented successfully, a legitimate user is able to prove that fact of this attack with a high probability. We also consider two options for modification of existing cryptocurrency protocols for dealing with this type of attacks. First, we discuss a modification that requires introducing changes in the Bitcoin protocol and allows diminishing the motivation to attack wallets. Second, an alternative option is the construction of special smart-contracts, which reward the users for providing evidence of the brute-force attack. The execution of this smart-contract can work as an automatic alarm that the employed cryptographic mechanisms, and (particularly) hash functions, have an evident vulnerability. |
| Databáze: | OpenAIRE |
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