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Randomness of Physiological Signals in Generation
Cryptographic Key for Secure Communication Between
Implantable Medical Devices Inside The Body And The
Outside World
Hassan Chizari, University of Gloucestershire
Emil Lupu, Imperial College London
Introduction
Patients
Insurance Companies
Manufacturers
Government Section
Vulnerabilities in Implantable Medical Devices
• Temporary Keys
• Key Exchange
• Using more than
one gateway
• Higher level of
security for implant
• Regulations and standards
• Communications among IMDs
• Sending data to a non-
authorized device
• More secure devices
• Reduced number of
vulnerabilities
Research
May 13
th
2017
7 Pacemakers
4 Gateways
4 Manufacturers
8000
Vulnerabilities
Main reasons for vulnerabilities
1. No encryption method
2. Static key encryption
January 9
th
2017
Vulnerabilities in
Pacemaker and
Its gateway
465,000
Affected patients in US
Challenges in security of IMDs
• Hardware and Software limitations
• Classic security methods are not practical in IMDs
• Generating a temporary key in IMD is challenging
• How to agree on a key with the gateway
• Emergency situation override
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