BSSPD: A Blockchain-Based Security Sharing Scheme for Personal Data with Fine-Grained Access Control

Algorithm 5

Authenticate.

 Input: from, method, account, id, args

 Output: null

 u=account_idx.find(account)

1 ifu != null then

2 ifu.id == id then

3  send action (from, method, (_self, true, args));

4 else

5  send action (from, method, (_self, false, args));

6 end

7 else

8 send action (from, method, (_self, false, args));

9 end