From: A practical application of CP-ABE for mobile PHR system: a study on the user accountability
Scheme
Encrypt cost
Decrypt cost
User accountability
Li et al. (2015)
4n + 2 Exp
4n Pair
Yes
Tian et al. (2014)
(n + 3) Exp + 1 Pair
2n Pair + n Exp
No
Ours
(2n + 2) Mul
(n + 2) Mul + (n + 1)Add