public bool TryGetVoterEncryptedKeyPair(string password, out EncryptedKeyPair encryptedKeyPair)
{
var passwordHash = PasswordHasher.Hash(password);
var connection = this.OpenConnection();
var queryString = $"select * from voters where pw_hash = \"{passwordHash.GetBase64String()}\"";
var query = new SQLiteCommand(queryString, connection);
var reader = query.ExecuteReader();
if (!reader.Read())
{
encryptedKeyPair = null;
return(false);
}
var voterIdString = (string)reader["voter_id"];
var encryptedPrivateKeyString = (string)reader["encrypted_private_key"];
var ivString = (string)reader["iv"];
var hashedPasswordString = (string)reader["pw_hash"];
encryptedKeyPair = new EncryptedKeyPair(
Convert.FromBase64String(voterIdString),
null,
Convert.FromBase64String(encryptedPrivateKeyString),
Convert.FromBase64String(ivString),
Convert.FromBase64String(hashedPasswordString));
return(true);
}
public bool login(string password, out EncryptedKeyPair crypticKeyPair)
{
Console.WriteLine("Please enter your Voter Regestration Identification Number:\n");
string userSuppliedPassword = Console.ReadLine();
crypticKeyPair = null;
var success = this.voterDb.TryGetVoterEncryptedKeyPair(userSuppliedPassword, out var encryptedKeyPair);
if (!success)
{
return(false);
}
this.keyPair = encryptedKeyPair;
this.password = userSuppliedPassword;
return(true);
}
public string GetMyVote(EncryptedKeyPair crypticKeyPair)
{
this.blockchain.TryGetVoteByVoter(Convert.ToBase64String(crypticKeyPair.PublicKey), out Vote vote);
return(vote.Ballot);
}
