CL-BC: A Secure Data Storage Model for Social Networks

Table 2

Scheme comparison.

Performance	Ordinary storage	Clark–Wilson storage	CL-BC data storage
Distributed	N	N	Y
Identity authentication	Y	Y	Y
Auditability	N	Y	Y
Expandability	N	N	Y
Resist collusive attacks	N	N	Y
Data tampering	Easy	Hard	Hard