Research Article
EPPDA: An Efficient and Privacy-Preserving Data Aggregation Scheme with Authentication and Authorization for IoT-Based Healthcare Applications
Algorithm 4
Verification and Authorization phase.
| Message and are stored in the Aggregator | | The Aggregator calculate: | | | | If and , signature is verified | | The Aggregator generates the message | | | The Aggregator send to Medical Server and stored | | The Medical Server calculate: | | | If | | The Medical Server generate the Aggregation Authorization message | | The Medical Server send to Aggregator |
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