An Efficient Searchable Symmetric Encryption Scheme for Smart Grid Data

Table 2

Notations and description.

Notations	Description
	The amount of data in the plaintext data sets
	Plaintext data sets
	Total number of data attributes in a piece of data
	The index of data
	Collection of data attributes to be retrieved
	The jth data unit in the ith piece of data
	The length of the bit array
	A string added when calculating the ID hash
	A set of n-bit digits
	Hash a bit string of arbitrary length to a fixed r-bit length
	A pseudo-random function that maps an r-bit string to another r-bit string