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Phadtare, Sakshi Suresh (2024) Advanced Image Steganography Using Pixel-Value Differencing, AES and ChaCha20 Encryption for Medical Data Security. Masters thesis, Dublin, National College of Ireland.
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Abstract
Steganography and cryptography methods are very good and used for security of the data when transmitting with networks. In the medical domain securing patient data is important due to sensitive nature of information which is involved. This project develops an advanced image steganography system aimed at securing medical data with advanced techniques for sensitive patient information like medical records, diagnosis reports and treatment histories. The system is going to combine Pixel-Value Differencing (PVD) with CHACHA20 Poly1305 encryption to protect sensitive patient information. The workflow starts with selecting an image which is having sensitive medical data into which the user’s message is going to insert. This message has been encrypted using CHACHA20 Poly1305 which is a good encryption algorithm known for its performance and strongness. The encrypted data is then hidden within the image using PVD which modifies pixel values to hide the information without any visible thing. A comparative analysis will show CHACHA20 Poly1305’s is best over AES encryption. CHACHA20 Poly1305 will show faster encryption and decryption times and have better avalanche effect scores which will give higher sensitivity to input changes and increase cryptographic performance. These attributes make CHACHA20 Poly1305 more good and novel as compared to AES in this application. The system is mainly suited for the medical domain by securing that patient data which includes sensitive type of textual information which is securely encrypted and stored. By combining PVD with the advanced CHACHA20 Poly1305 encryption this project is going to give a highly secure and powerful solution for protecting medical data by showing both high performance and novel security features in the field of data steganography.
| Item Type: | Thesis (Masters) |
|---|---|
| Supervisors: | Name Email Hafeez, Khadija UNSPECIFIED |
| Uncontrolled Keywords: | Image Steganography; ChaCha20 Encryption; Medical Data Security; Image Encryption Steganographic Techniques |
| Subjects: | Q Science > QA Mathematics > Electronic computers. Computer science T Technology > T Technology (General) > Information Technology > Electronic computers. Computer science Q Science > QA Mathematics > Computer software > Computer Security T Technology > T Technology (General) > Information Technology > Computer software > Computer Security R Medicine > Healthcare Industry |
| Divisions: | School of Computing > Master of Science in Cyber Security |
| Depositing User: | Ciara O'Brien |
| Date Deposited: | 30 Jul 2025 14:04 |
| Last Modified: | 30 Jul 2025 14:04 |
| URI: | https://norma.ncirl.ie/id/eprint/8353 |
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