Confidential storage of medical images - a chaos-based encryption approach
by M.Y. Mohamed Parvees; J. Abdul Samath; B. Parameswaran Bose
International Journal of Cloud Computing (IJCC), Vol. 7, No. 1, 2018

Abstract: The recent developments in telehealth increase the demands of clinical and non-clinical services which lead to work on medical image security to provide better teleradiology services. One of the mandatory characteristics of the image security is confidentiality. The traditional block and stream ciphers are suitable for encrypting small data or the file which is not having redundant information. Hence, this study proposes an encryption algorithm to provide confidentiality to medical images using chaotic maps. The different enhanced chaotic economic maps (ECEM) are derived by substituting sine and cosine functions in basic chaotic economic map (CEM) equation. The ECEMs are studied in detail with respect to their bifurcate nature and Lyapunov exponents to achieve greater robustness in encryption. The improved maps generate different chaotic sequences which are employed in confusing, swapping and diffusing 16-bit DICOM image pixels, thereby assure confidentiality. After scrambling, the different security analyses such as statistical, entropy, differential, key space, key sensitivity, cropping attack, noise attack, decryption efficacy analysis are performed to prove the effectiveness of the proposed algorithm.

Online publication date: Fri, 11-May-2018

The full text of this article is only available to individual subscribers or to users at subscribing institutions.

 
Existing subscribers:
Go to Inderscience Online Journals to access the Full Text of this article.

Pay per view:
If you are not a subscriber and you just want to read the full contents of this article, buy online access here.

Complimentary Subscribers, Editors or Members of the Editorial Board of the International Journal of Cloud Computing (IJCC):
Login with your Inderscience username and password:

Username:        Password:          Forgotten your password?

Want to subscribe?
A subscription gives you complete access to all articles in the current issue, as well as to all articles in the previous three years (where applicable). See our Orders page to subscribe.

If you still need assistance, please email subs@inderscience.com