BFR-SE: A Blockchain-Based Fair and Reliable Searchable Encryption Scheme for IoT with Fine-Grained Access Control in Cloud Environment

Algorithm 1

Register.

 Input: ,

 Output: void

1 require_auth()

2 u = account_idx.find()

3 if (u == null) then

4  u.=

5  account_idx.modify(u)

6 else

7  u.=

8  u.=

9  account_idx.emplace(u)

10 end