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Medical Image Encryption: Microcontroller and FPGA Perspective
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Author(s): Sundararaman Rajagopalan (Shanmugha Arts, Science, Technology, and Research Academy (Deemed), India), Siva Janakiraman (Shanmugha Arts, Science, Technology, and Research Academy (Deemed), India)and Amirtharajan Rengarajan (Shanmugha Arts, Science, Technology, and Research Academy (Deemed), India)
Copyright: 2019
Pages: 27
Source title:
Medical Data Security for Bioengineers
Source Author(s)/Editor(s): Butta Singh (Guru Nanak Dev University, India), Barjinder Singh Saini (Dr. B. R. Ambedkar National Institute of Technology, India), Dilbag Singh (Dr. B. R. Ambedkar National Institute of Technology, India)and Anukul Pandey (Dumka Engineering College, India)
DOI: 10.4018/978-1-5225-7952-6.ch014
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Abstract
The healthcare industry has been facing a lot of challenges in securing electronic health records (EHR). Medical images have found a noteworthy position for diagnosis leading to therapeutic requirements. Millions of medical images of various modalities are generally safeguarded through software-based encryption. DICOM format is a widely used medical image type. In this chapter, DICOM image encryption implemented on cyclone FPGA and ARM microcontroller platforms is discussed. The methodology includes logistic map, DNA coding, and LFSR towards a balanced confusion – diffusion processes for encrypting 8-bit depth 256 × 256 resolution of DICOM images. For FPGA realization of this algorithm, the concurrency feature has been utilized by simultaneous processing of 128 × 128 pixel blocks which yielded a throughput of 79.4375 Mbps. Noticeably, the ARM controller which replicated this approach through sequential embedded “C” code took 1248 bytes in flash code memory and Cyclone IV FPGA consumed 21,870 logic elements for implementing the proposed encryption scheme with 50 MHz operating clock.
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