An Efficient Three-Party Authentication Scheme for Data Exchange in Medical Environment

Table 5

Comparison of computation and communication costs with other 3PAKA schemes.

	Chen et at.’s scheme [15]			Wang et al.’s scheme [16]			Farash et al.’s scheme [17]			Our scheme
	Exponentiation	3	3	2	4	4	6	2	3	2	1	1	0
X-or	0	0	0	1	1	2	1	2	3	0	0	0
Multip./division	0	0	0	0	0	0	0	0	0	0	0	0
Random number	1	1	0	1	1	1	1	1	0	0	0	0
Hash	2	2	2	3	3	4	1	2	2	0	0	1
Encryption/decryption	0	0	0	2	2	3	0	0	0	2	2	2
Transmission messages	5	11	2	3	8	1	4	10	5	3	1	3
Transmission rounds	2	2	1	2	1	4	1	2	1	1	1	2