A Privacy-Aware Electricity Consumption Data Collection Model Based on Group Blind Signature

Table 1

Description of notations in this study.

Notations	Descriptions
q, p	The large primes
	The cyclic additive group
	The cyclic multiplicative group
e	Bilinear pairing
P	A generator point
	Nonzero integers not larger than q
	One-way hash function
	Private key of group manager
	Public key of group manager, where
T	The time of announcement in the group bulletin board
E	The product of hashes of anonymous group members
	Real identity code of the group member
	Anonymous identity code of the group member
	Public key of group member, where
	Private key of group member
	The original message to be signed
	The blinded message
	The random integer number
	The blind factors
	Blind signature
	Digital signature for
	Product of two large prime numbers, where
	Primitive root of the modular n
	Group public key, which is public key of RSA
	Group private key, which is public key of RSA
	Private key of group manager
	Public key of group manager
	The information of user
	Encrypted value after user information has been hashed, where
	The random integer number
	The pseudonym of user
	Security parameters of the electricity consumption data blocks generated by smart meters
	The private key of tag
	The public key of tag
	The random value chosen by
	The value needed to compute the tag is the same for each data block
	The value of tag for data block
	The encrypted value of electricity data and the corresponding tag
	Multiplicative value of data block labels in a day
	The sum of the electricity data of jth dimension in a day
	Multiplications of bilinear pairing operation values for each data block
	The cumulative product of the hash value in a day