A Multibranch Search Tree-Based Multi-Keyword Ranked Search Scheme over Encrypted Cloud Data

<div>Time cost versus <i>k</i>. (a) <i>m</i> = 20000. (b) <i>m</i> = 120000.</div>

Security and Communication Networks

Figure 9: A Multibranch Search Tree-Based Multi-Keyword Ranked Search Scheme over Encrypted Cloud Data 