Server-Aided Revocable Attribute-Based Encryption from Lattices

Table 1

Comparisons of our SR-ABE with other revocable schemes.

	CDLQ [34]	QZZC [35]	CLL+ [37]	KMT [39]	Ours
Problem	DBDH	DBDH	LWE	LWE	LWE
Model	CP-ABE	CP-ABE	IBE	IBE	KP-ABE
PQC	No	No	Yes	Yes	Yes
Server	Yes	Yes	—	—	Yes
DKER	No	Yes	No	Yes	No
Encryption time	—	—
User’s decryption time	—	—
Time	—	—
Server-key size			—	—
User-key size