Fig. 4From: An efficient traceable access control scheme with reliable key delegation in mobile cloud computing a Encryption cost in CP-ABE and KD-TABE. b Computation cost of RA and IA is constant, which has no relationship with attributes number of DR’s attributes set. c Computation cost of AA grows with the rise of attributes number in DR’s attributes set. d Storage cost of RA and IA grows with the rising of DR. e Decryption cost of SDS (A) and TDS(B)Back to article page