Journal of Sensors / 2017 / Article / Tab 4

Research Article

An Intelligent and Secure Health Monitoring Scheme Using IoT Sensor Based on Cloud Computing

Table 4

The communication cost of our scheme.

CaseCost

The case when hospital uploads physical inspection report
The case when mobile device uploads biological data
The emergency case
The normal case
Total

: the time to transmit the identity (80 bits).
: the time to transmit a timestamp (16 bits).
: the time to transmit a symmetric encryption, ciphertext (256 bits).
: the time to transmit an asymmetric encryption, ciphertext (1,024 bits).
: the time to transmit a signature (1024 bits).
: the time to transmit a certificate (8192 bits) [19].

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