Embedding Digital Signature into CSV Files Using Data Hiding
Abstract: Open data is an important basis for open science and evidence-based policymaking. Governments of many countries disclose government-related statistics as open data. Some of these data are provided as CSV files. However, since CSV files are plain texts, we cannot ensure the integrity of a downloaded CSV file. A popular way to prove the data's integrity is a digital signature; however, it is difficult to embed a signature into a CSV file. This paper proposes a method for embedding a digital signature into a CSV file using a data hiding technique. The proposed method exploits a redundancy of the CSV format related to the use of double quotes. The experiment revealed we could embed a 512-bit signature into actual open data CSV files.
- Description of digital signatures and code signing in workbooks in excel. https://learn.microsoft.com/en-us/office/troubleshoot/excel/digital-signatures-code-signing, accessed: 2024-07-04
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