Draw an UML "ACTIVITY" DIAGRAM with vertical swimlanes digitally for the use-case given below. Hand drawings and code are not accepted. Use of Visual Paradigms recommended.

USE CASE NAME:

Security of votes

USE CASE DISCRIPTION:

Voter enter the system to participate an election. Voter clicks the button and list the elections. Voter participate an election. Voter select a candidate to vote for. Voter vote the candidate which their choose. Voter clicks the button and send their vote. System gets the voters vote. System send vote to the database. In database votes are recorded and tally up. In database votes are encrypted with BlockChain system.

PRIMARY ACTOR(S):

System

SUPPORTING ACTOR(S):

Database who record and tally the votes.

BlockChain system that encrypts all votes.

TRIGGERS:

System wants to secure all votes.

PRECONDITIONS:

Voter must participate an election.

Voter must send a vote.

Votes must be recorded in database.

POSTCONDITIONS:

Votes will be encrypted.

NORMAL FLOW:

Voter enter the system.

The voter is required to enter their registered account.

Voter logs into the account that registered in the system.

Voter click the election search button.

Voter lists elections to participate.

Voter select election.

System requires the voter informations.

Voter enter their information.

System gets the informations.

System compares the informations with database.

System allows them to participate.

Voter select their candidate.

Voter click the send vote button.

System check the voter information.

System allows voter to send vote.

System gets the vote.

System send vote to the database.

Database record and tally up the votes.

BlockChain system encyrpt all votes.

ALTARNATE FLOW:

2A.If voter does not have a registered account, they are sent to registration page.

3A. If voter entered their username and password incorrectly, they are asked to re-enter.

11A.If the voter is not eligible, system does not allow them the participate.

15A. If voter has previously voted in same election, system does not allow them to vote again.