Audit Outsourced Data in Internet of Things

Table 1

Notations and definitions.

Notation	Definition
	Safety strength parameters
	q-order finite field
	q-order multiplicative cyclic group
	Generator of
	User’s private key
	User’s public key
	Data outsourced to the cloud
	User’s i-th data block
	Homomorphic tag of
	Auxiliary calculation information generated by CSP
	Homomorphic tag collection
	Bilinear mapping
	Number of data blocks
	Number of data blocks challenged
	Random number of the challenge block pairing
	Index of data block
	Auxiliary authentication information of nodes
	Challenge-response proof generated by CSP
	Collision-resistant one-way hash function
	Root hash