Lightweight Privacy-Preserving Data Sharing Scheme for Internet of Medical Things

Table 1

Notation table.

No.	Notation	Explanation
1		A large prime number
2		An elliptic curve of prime order
3		An additive elliptic curve group of order
4		Base point of
5		Order of
6		Point at infinity
7		A set with elements
8
9		One-way hash function,
10		Secret key of trusted authority (TA)
11		Public key of TA
12		Warrant of user
13	,	Identity of user and patient
14		Secret key of the user and cloud server (CS)
15		Temporary identity of patient
16		Health data
17		Encrypted data
18		Concatenate operation
19		Bitwise XOR operation
20		Entity sends the message towards entity through a public channel