# A Lightweight Image Cryptosystem for Cloud-Assisted Internet of Things
## 3 Materials and Methods
### Proposed Lightweight Image Cryptography Algorithm
## 6 Conclusions and Future Works

In this paper, efforts have been made to implement a lightweight cryptosystem (HXP) that does not make use of a substitution box. Security analysis of the scheme revealed that it has good security and performs better than the existing schemes in terms of its encryption quality (EQ), entropy, and NCC. This scheme has a good plain image and key sensitivity; hence, it is resistant to known plaintext, known ciphertext, chosen plaintext, chosen ciphertext, and differential cryptanalysis attacks. It can therefore be inferred that security of the cryptography algorithm can still be maintained without the use of a substitution box, as demonstrated in this research paper. There is the need to evaluate whether this approach actually led to the reduction in memory usage. In the future, comparative analyses of the proposed scheme in terms of its memory usage, execution time, throughput, as well as power consumption will be carried out. The manuscript was written through the contributions of all authors. [PERSON] and [PERSON]; were responsible for the conceptualization of the topic; article gathering and sorting were carried out by [PERSON]. Data Availability Statement: The data (images) presented in this study are available at [[http://sipi.usc.edu/database/](http://sipi.usc.edu/database/)]([http://sipi.usc.edu/database/](http://sipi.usc.edu/database/)) (accessed on 15 March 2023). These data (images) were derived from the USC-SIPI image database at [[http://sipi.usc.edu/database/](http://sipi.usc.edu/database/)]([http://sipi.usc.edu/database/](http://sipi.usc.edu/database/)) (accessed on 15 March 2023). The authors declare that there are no conflict of interest. ## References

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