Secure Transmission and Recovery of Embedded Patient Information from Biomedical Images of Different Modalities through a Combination of Cryptography and Watermarking

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Subhajit Koley 1,* Koushik Pal 2 Goutam Ghosh 2 Mahua Bhattacharya 3

1. Electronics & Communication Engineering, Guru Nanak Institute of Technology, Kolkata, India

2. Institute of Radio Physics and Electronics, University of Calcutta, Kolkata, India

3. Indian Institute of Information, Technology and Management, Gwalior, India

* Corresponding author.


Received: 2 Dec. 2013 / Revised: 28 Dec. 2013 / Accepted: 5 Feb. 2014 / Published: 8 Mar. 2014

Index Terms

Biomedical image, Cryptography, Watermarking, LSB, ASCII, attacks, image quality metrics


In this paper a new type of information hiding skill in biomedical images is proposed through a combination of cryptography and digital watermarking to achieve the enhancement in confidential and authenticated data storage and secured transmission. Here patient's name and doctor's name are considered as patient's information which is encrypted using cryptography and embedded in the scan image of that patient through watermarking. RSA algorithm is used for encryption and higher order bit LSB replacement technique is used for embedding the information. The private keys are also embedded in the cover image to have better security and accurate recovery of the hidden information. The outcome of the proposed methodology shows that the hidden information doesn't affect the cover image and it can be recovered efficiently even from several noisy images. The strength of the proposed embedding scheme is also supported by several image quality matrices.

Cite This Paper

Subhajit Koley, Koushik Pal, Goutam Ghosh, Mahua Bhattacharya,"Secure Transmission and Recovery of Embedded Patient Information from Biomedical Images of Different Modalities through a Combination of Cryptography and Watermarking", IJIGSP, vol.6, no.4, pp.18-31, 2014. DOI: 10.5815/ijigsp.2014.04.03


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