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Steganographic Analysis of Blockchains †
Steganography is one of the ways to hide data between parties. Its use can be worrisome, e.g., to hide illegal communications. Researchers found that public blockchains can be an attractive place to hide communications; however, there is not much evidence of actual use in blockchains. Besides, previ...
Autores principales: | , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2021
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8231769/ https://www.ncbi.nlm.nih.gov/pubmed/34199274 http://dx.doi.org/10.3390/s21124078 |
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author | Giron, Alexandre Augusto Martina, Jean Everson Custódio, Ricardo |
author_facet | Giron, Alexandre Augusto Martina, Jean Everson Custódio, Ricardo |
author_sort | Giron, Alexandre Augusto |
collection | PubMed |
description | Steganography is one of the ways to hide data between parties. Its use can be worrisome, e.g., to hide illegal communications. Researchers found that public blockchains can be an attractive place to hide communications; however, there is not much evidence of actual use in blockchains. Besides, previous work showed a lack of steganalysis methods for blockchains. In this context, we present a steganalysis approach for blockchains, evaluating it in Bitcoin and Ethereum, both popular cryptocurrencies. The main objective is to answer if one can find steganography in real case scenarios, focusing on LSB of addresses and nonces. Our sequential analysis included 253 GiB and 107 GiB of bitcoin and ethereum, respectively. We also analyzed up to 98 million bitcoin clusters. We found that bitcoin clusters could carry up to 360 KiB of hidden data if used for such a purpose. We have not found any concrete evidence of hidden data in the blockchains. The sequential analysis may not capture the perspective of the users of the blockchain network. In this case, we recommend clustering analysis, but it depends on the clustering method’s accuracy. Steganalysis is an essential aspect of blockchain security. |
format | Online Article Text |
id | pubmed-8231769 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-82317692021-06-26 Steganographic Analysis of Blockchains † Giron, Alexandre Augusto Martina, Jean Everson Custódio, Ricardo Sensors (Basel) Article Steganography is one of the ways to hide data between parties. Its use can be worrisome, e.g., to hide illegal communications. Researchers found that public blockchains can be an attractive place to hide communications; however, there is not much evidence of actual use in blockchains. Besides, previous work showed a lack of steganalysis methods for blockchains. In this context, we present a steganalysis approach for blockchains, evaluating it in Bitcoin and Ethereum, both popular cryptocurrencies. The main objective is to answer if one can find steganography in real case scenarios, focusing on LSB of addresses and nonces. Our sequential analysis included 253 GiB and 107 GiB of bitcoin and ethereum, respectively. We also analyzed up to 98 million bitcoin clusters. We found that bitcoin clusters could carry up to 360 KiB of hidden data if used for such a purpose. We have not found any concrete evidence of hidden data in the blockchains. The sequential analysis may not capture the perspective of the users of the blockchain network. In this case, we recommend clustering analysis, but it depends on the clustering method’s accuracy. Steganalysis is an essential aspect of blockchain security. MDPI 2021-06-13 /pmc/articles/PMC8231769/ /pubmed/34199274 http://dx.doi.org/10.3390/s21124078 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Giron, Alexandre Augusto Martina, Jean Everson Custódio, Ricardo Steganographic Analysis of Blockchains † |
title | Steganographic Analysis of Blockchains † |
title_full | Steganographic Analysis of Blockchains † |
title_fullStr | Steganographic Analysis of Blockchains † |
title_full_unstemmed | Steganographic Analysis of Blockchains † |
title_short | Steganographic Analysis of Blockchains † |
title_sort | steganographic analysis of blockchains † |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8231769/ https://www.ncbi.nlm.nih.gov/pubmed/34199274 http://dx.doi.org/10.3390/s21124078 |
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