Provably-Secure (Chinese Government) SM2 and Simplified SM2 Key Exchange Protocols

Table 3

Protocol comparison.

Protocol	Cost	Both implicit and explicit key confirmation?
Cao et al. (2008) [13]		No
Cao et al. (2010) [10]		No
He et al. (2012) [2]	6m + 5a + 2e + 2h	No
Yang and Tan (2011) [24]		No
He et al. (2011) [14]		No
Chen and Han (2013) [25]		No
SM2 [15]		Yes
Our simplified SM2 protocol		Yes