Distributed Blockchain-Based Authentication and Authorization Protocol for Smart Grid

Algorithm 5

Login.

Input

OutputTrue or False

1: contractAddress = loadAuthenticationAddr();

2: auth = Authentication.load (contractAddress);

3: result = auth.select(accountId);

4: ifthen

5:  Verify the validity of the account data on the blockchain

6:  String tmpPublicKey = result. getValue2();

7:  String UserInfo = result. getValue3();

8:  String tmpsigdata = result. getValue4();

9:  Get cryptographic suite cSuite = new CryptoSuite (CryptoType.ECDSATYPE);

10:  String tmpdata = + +

11:  String hashData =

12:  Boolean nVer =

13:  ifthen

14:   Generate a token to be signed by the user

15:   Long timeStamp = System.currentTimeMillis();

16:    = + + ;

17:    =

18:   Verify the validity of token data

19:   ifthen

20:    

21:    

22:    ifthen

23:     returnTrue

24:    end if

25:   end if

26:  end if

27: end if

28: returnFalse