Public Key Encryption with Authorized Equality Test on Outsourced Ciphertexts for Cloud-Assisted IoT in Dual Server Model

Table 1

Notations.

Symbol	Meaning
	Security parameter
	Cyclic groups of prime order satisfying bilinear pairing
	Cryptographic hash functions
	A generator of
	Private key of user
	Public key of user
	Public key of primary server
	Secret key of primary server
	Public key of secondary server
	Secret key of secondary server
	Random elements in
	Ciphertext of message
	Authentication of user in ciphertext format
	Authentications of users and
	Intermediate result of equality test
	Temporary elements for computing