Secure Data Transmission Beyond Tier 1 of Medical Body Sensor Network

摘要

Medical body sensor network (MBSN), a three-tier architectural network, has been in wide use on demand for remote health monitoring and support in both urban and rural areas. Primary concern of such system is security of sensitive health data along with low end-to-end delay and energy consumption among others. This paper implements secure patient data transmission between tier 2 and tier 3 by ensuring confidentiality and integrity. Man-in-middle attack and distributed denial of service attack can be detected based on end-to-end delay in data transmission. Hashbased secret key is used for encryption which is generated using extracted biological information of user at coordinator PDA of MBSN. Using shared extracted biological information, secret key is regenerated at cloud-based medical server for decryption of data. Experimental results show using different symmetric key encryption techniques, maximum end-to-end delay is only 11.82% of 250 ms which is the maximum permissible delay limit for healthcare application.