Research Article
EPPDA: An Efficient and Privacy-Preserving Data Aggregation Scheme with Authentication and Authorization for IoT-Based Healthcare Applications
Algorithm 2
Encrypt and Signing the collected data.
Input: PKMS, SKMS, , Nonce | Output :, MACi | (1) Map into point of the elliptic curve | (i) If Emergency Situation, the Medical Sensor calculate and send to the Aggregator: | (a) Compute: | (b) Compute: | (ii) If Vital Health data, the Medical Sensor calculate and send to the Aggregator: | (a) Compute: | (b) Compute: | (iii) If Regular Health data, the Medical Sensor calculate and send to the Aggregator: | (a) Compute : | (b) Compute : | (2) Send (), (), and () to Aggregator |
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