Securing DICOM images by a new encryption algorithm using Arnold transform and Vigenère cipher

This study presents a novel encryption method for the security of DICOM (Digital Imaging and Communications in Medicine) images used in medical applications. The proposed algorithm splits the original image into blocks of size 16 × 16 pixels, then encrypts it through three steps. Firstly, the keys k...

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Bibliographic Details
Published in:IET image processing Vol. 14; no. 6; pp. 1209 - 1216
Main Authors: Boussif, Mohamed, Aloui, Noureddine, Cherif, Adnene
Format: Journal Article
Language:English
Published: The Institution of Engineering and Technology 11.05.2020
Subjects:
Arnold
colour images
cryptography
data compression
DICOM images
image block‐by‐block
image coding
image colour analysis
image processing
JPEG compression
medical applications
novel encryption method
recent image encryption algorithm
Research Article
size 16 × 16 pixels
typical image encryption algorithm
Vigenère cipher algorithm
image processing
typical image encryption algorithm
data compression
Vigenère cipher algorithm
JPEG compression
DICOM images
cryptography
novel encryption method
Arnold
medical applications
size 16 × 16 pixels
image block-by-block
colour images
recent image encryption algorithm
image colour analysis
image coding
ISSN:1751-9659, 1751-9667
Online Access:Get full text
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Summary:This study presents a novel encryption method for the security of DICOM (Digital Imaging and Communications in Medicine) images used in medical applications. The proposed algorithm splits the original image into blocks of size 16 × 16 pixels, then encrypts it through three steps. Firstly, the keys k1, k2, k3 and k4 are transformed from four vectors of 16 pixels to a matrix of 16 × 16 pixels. Then, the proposed algorithm encrypts the image block-by-block using the Vigenère cipher algorithm. For each block, the proposed algorithm modifies the key using Arnold transform. The proposed encryption algorithm is scalable with colour images and JPEG (Joint Photographic Experts Group) compression. The cryptanalysis of the proposed algorithm demonstrates that it passed the cryptography attacks tests with success. Its running time shows that it is faster than a typical and recent image encryption algorithm.
ISSN:1751-9659
1751-9667
DOI:10.1049/iet-ipr.2019.0042