A Trusted Remote Data Trading Scheme in Hybrid SDN for Intelligent Internet of Things

Table 3

Comparison of computational overhead of signature schemes.

Scheme	Signature length	Signature algorithm	Verification algorithm
[27]	2092 bit	6Exp	7Exp+EE
[21]	767 bit	4Exp	Exp+2EE
[28]	1662 bit	5Exp	5Exp+EE
Ours	1491 bit	4Exp	4Exp+EE