F2P-ABS: A Fast and Secure Attribute-Based Signature for Mobile Platforms

Table 1

Comparison in terms of functionality of ABS schemes.

Scheme	[24]	[25]	[26]	[27]	F2P-ABS
Authority	Single	Multiple	Single	Single	Single
Escrow-free	×	√	×	×	√
Pairing-free	×	×	×	×	√
Predicate	Tree	Threshold	LSSS	LSSS	Tree
Perfect signer privacy	×	×	√	×	√
Complexity assumption	CDH	CDH	n-CDHE	n-CDHE	DL
EUF-ca-CPMA	×	×	×	×	√