Traceable Ciphertext-Policy Attribute-Based Encryption with Verifiable Outsourced Decryption in eHealth Cloud

Table 1

Comparison between ours and some related works.

Systems	CP/KP			Verifiability	Traceability	Delegation
Rouselakis et al. [18]	CP,KP	Large	No	No	No	No
Green et al. [13]	CP,KP	Small	Yes	No	No	No
Lai et al. [14]	CP	Small	Yes	Yes	No	No
Qin et al. [15]	CP	Small	Yes	Yes	No	No
Liu et al. [16]	CP	Small	No	No	Yes	No
Ning et al. [17]	CP	Large	No	No	Yes	No
Our VTCP-ABE	CP	Large	Yes	Yes	Yes	Yes

is the abbreviation of attribute universe.
is the abbreviation of outsourced decryption.