Dual-Server Identity-Based Encryption with Authorized Equality Test for IoT Data in Clouds

Table 1

Notations.

Symbol	Meaning
	Security parameter
,	Cyclic groups of prime order satisfying bilinear pairing
, , ,	Cryptographic hash functions
	A generator of
	The master private key
	The public parameter
	Private key of user
,	Private keys of and
	Ciphertext of message
,	Ciphertext authentication tokens of user for and
	Plaintext authentication tokens of user for and
	Internal test result of equality test