A Cross-Domain Authentication Optimization Scheme between Heterogeneous IoT Applications

Table 4

Comparing calculation costs.

Program	Sign time/ms	Verify signature time/ms	Verify authority time/ms	Total time/ms
IRBA	24.124	8.972	6.627	39.768
MCPSP	2.165	6.534	5.424	14.123
DSP-CCAS	6.495	2.178	4.268	12.941