private void CastVote(VoteTicket ticket, string voteContent)
{
var protector = dataprotection.CreateProtector("SecureBallot");
var secureVote = protector.Protect(voteContent);
var voteId = Guid.NewGuid().ToString();
lock (ticketsDb)
{
ticketsDb.Put(ticket.HashId, ticket.ToJson());
}
lock (secureBallot)
{
var ballot = new BallotContent()
{
ElectionId = ticket.ElectionId, SecureVote = secureVote
};
secureBallot.Put(voteId, ballot.ToJson());
}
}
public async Task <IActionResult> GenerateTicket(string otp)
{
var pq = from p in _context.Person
join u in _context.UserLogin on p.Id equals u.PersonFk
where u.Provider == "AzureAD" && u.UserId == this.User.Identity.Name
select p;
if (await pq.CountAsync() != 1)
{
throw new Exception("Internal error! Too many persons associated with login " + this.User.Identity.Name);
}
var person = await pq.FirstAsync();
var votes = await GetElections(person);
var availableVotes = votes.Where(v => !v.Item4 && !v.Item5.HasValue).Select(v => v.Item1.Id).ToList();
if (availableVotes.Count == 0)
{
return(Forbid("No ballot to cast"));
}
var now = DateTime.Now;
var ckvotes = await(from v in _context.Voter
join r in _context.Recognition on v.RecognitionFk equals r.Id
join e in _context.Election on v.ElectionFk equals e.Id
where availableVotes.Contains(v.Id) && !v.Vote.HasValue // ensure that the vote has not been casted
select new { Voter = v, Recognition = r, Election = e }).ToListAsync();
if (ckvotes.Count() == 0)
{
return(Forbid("OTP non valida"));
}
var otps = ckvotes.GroupBy(v => v.Recognition.Otp);
if (otps.Count() != 1)
{
throw new Exception("Internal error: too many Otps for ticket generation");
}
if (otp != otps.First().Key)
{
return(Forbid("OTP non valida"));
}
// Ticket generation
var tickets = new List <VoteTicket>();
foreach (var v in ckvotes)
{
var ticketIdClearText = v.Voter.Id + ":" + v.Voter.PersonFk;
var sha256 = SHA256.Create();
var ticket = new VoteTicket();
ticket.HashId = ComputeSha256Hash(ticketIdClearText);
ticket.Issued = DateTime.Now;
ticket.Expiration = DateTime.Now + TimeSpan.FromMinutes(30);
ticket.ElectionId = v.Voter.ElectionFk.ToString();
ticket.ElectionName = v.Election.Name;
tickets.Add(ticket);
v.Recognition.State = 1;
var dbt = new VotingTicket()
{
Id = Guid.NewGuid(),
Hash = ticket.HashId,
Content = ticket.ToJson(),
VoterFk = v.Voter.Id
};
v.Voter.VotingTicketFk = dbt.Id;
_context.VotingTicket.Add(dbt);
}
await _context.SaveChangesAsync();
var sertickets = System.Text.Json.JsonSerializer.Serialize(tickets);
var protector = dataprotection.CreateProtector("EVSKeyExchange");
var secureTickets = protector.Protect(Encoding.UTF8.GetBytes(sertickets));
return(Json(Convert.ToBase64String(secureTickets)));
}
public VoteTicket GetPersonAttributes()
{
return(VoteTicket.FromJson(Content));
}
