Anonymous and Efficient Certificateless Multirecipient Signcryption Scheme for Ecological Data Sharing

Table 1

Notations.

Name	Meaning
BPO	Bilinear pairing operations
MTPHF	Map-to-point hash function
ECC	Elliptic curve cryptography
KGC	Key generation center
SPMOOECC	Scalar point multiplication operations on elliptic curve cryptography
CDHP	Computational Diffie-Hellman problem
ECDLP	Elliptic curve discrete logarithm problem
	A cycle group of points on ECC
PKi	Public key of user , represents the user’s identity
	Generator of
	Large prime integer
Pr	The probability of an event
SKi	Private key of user , represents the user’s identity
	Nonzero multiplicative group with large prime
IME	Identity-based multireceiver encryption
IMS	Identity-based multireceiver signcryption
CME	Certificateless multireceiver encryption
CMS	Certificateless multireceiver signcryption