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<p>Secure transmission of hyperspectral data from satellites is crucial for astronomical and remote sensing applications. Traditional methods like Rivest-Shamir-Adleman (RSA) and Rivest Cipher (RC-5) support the process but have some shortcomings; for example, if the dataset to be secured is large enough, RSA is very slow; similarly, if RC-5 was used for the same, it might make the process vulnerable to attacks. This research introduces R<sup>2</sup>CS, a hybrid cryptosystem that combines RC-5 and RSA to improve both security and speed for encrypting satellite hyperspectral data. R<sup>2</sup>CS first encrypts the data using RC-5 and complements it with an additional layer of protection from RSA. In this work, R<sup>2</sup>CS was evaluated on Chandrayaan-1’s Moon Mineralogy Mapper (M<sup>3</sup>) hyperspectral data (multidimensional nature, to validate versatility of R<sup>2</sup>CS), which contains 85 spectral bands. The results suggested that R<sup>2</sup>CS was able to achieve a data transmission rate of 100%, avoiding the data loss as suffered by standalone RSA. The average decryption–encryption cycle ratio is 1.137, i.e., R<sup>2</sup>CS is faster than RSA. These results suggest R<sup>2</sup>CS is a reliable method for protecting satellite data, offering a good balance between security and performance.</p>

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R2CS: a hybrid cryptosystem using RC-5 and RSA for secure transmission of satellite hyperspectral data

  • 期刊论文

  • 发表日期：

    2025年4月28日

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  • A. Ramamoorthy,
  • Anurag Dutta,
  • M. Gayathri Lakshmi

摘要

Secure transmission of hyperspectral data from satellites is crucial for astronomical and remote sensing applications. Traditional methods like Rivest-Shamir-Adleman (RSA) and Rivest Cipher (RC-5) support the process but have some shortcomings; for example, if the dataset to be secured is large enough, RSA is very slow; similarly, if RC-5 was used for the same, it might make the process vulnerable to attacks. This research introduces R2CS, a hybrid cryptosystem that combines RC-5 and RSA to improve both security and speed for encrypting satellite hyperspectral data. R2CS first encrypts the data using RC-5 and complements it with an additional layer of protection from RSA. In this work, R2CS was evaluated on Chandrayaan-1’s Moon Mineralogy Mapper (M3) hyperspectral data (multidimensional nature, to validate versatility of R2CS), which contains 85 spectral bands. The results suggested that R2CS was able to achieve a data transmission rate of 100%, avoiding the data loss as suffered by standalone RSA. The average decryption–encryption cycle ratio is 1.137, i.e., R2CS is faster than RSA. These results suggest R2CS is a reliable method for protecting satellite data, offering a good balance between security and performance.