/// <summary>
/// /// compares stored hash to Hash generated from user info.
/// if true, let them through
/// if false error occurred
/// </summary>
/// <param name="FN">First Name</param>
/// <param name="LN">Last Name</param>
/// <param name="DOB">Date of Birth</param>
/// <param name="Cntry">Country</param>
/// <param name="rgn">Region</param>
/// <param name="adrs">address</param>
/// <param name="eml">email</param>
/// <returns></returns>
public static bool CheckHashTable(string FN, string LN, DateTime DOB, string Cntry, string rgn, string adrs, string eml)
{
int id = FindID(FN, LN);
string inputString = FN + LN + DOB + Cntry + rgn + adrs;
byte[] DataReceived = Encoding.UTF8.GetBytes(inputString);
byte[] GeneratedHash;
VoterInfo hashtable;
if (id != -1)
{
hashtable = ElectionDBClass.RetrieveVoterInfoObject(id);
}
else
{
return(false);
}
DataTable dt = new DataTable();
byte[] salt = hashtable.Salt;
//generates a SaltedHash with the datareceived, this is to allow for a comparison between the hash on the database and the new generated hash. A hash generated with key 'A' should always create Hash 'A'. So if hash 'A' != hash 'B', then then means one of two things: key 'a' != key 'b', or there is an error in logic some where.
GeneratedHash = GenerateSaltedHash(DataReceived, salt);
if (CompareByteArrays(hashtable.Hash, GeneratedHash)) //CompareByteArrays compares byte[] Summary: checks if ID's match, if true; generates saltedhash with hash on table.
{
return(true);
}
return(false);
}
protected void btnSubmit_Click(object sender, EventArgs e)
{
if (ViewState["Mayor"] != null)
{
string[] tokens = ((string)ViewState["Mayor"]).Split(new char[] { ',' });
Candidate candidate = new Candidate();
candidate.LName = tokens[0];
candidate.FName = tokens[1];
ElectionDBClass.AddVoteToCandidate(candidate);
}
if (ViewState["CityCouncil"] != null)
{
string[] tokens = ((string)ViewState["CityCouncil"]).Split(new char[] { ',' });
Candidate candidate = new Candidate();
candidate.LName = tokens[0];
candidate.FName = tokens[1];
ElectionDBClass.AddVoteToCandidate(candidate);
}
if (ViewState["Superintendent"] != null)
{
string[] tokens = ((string)ViewState["Superintendent"]).Split(new char[] { ',' });
Candidate candidate = new Candidate();
candidate.LName = tokens[0];
candidate.FName = tokens[1];
ElectionDBClass.AddVoteToCandidate(candidate);
}
}
/// <summary>
/// Hopefully this function will find the ID from Firstname and LastName, will return -1 if it can't find id.
/// </summary>
/// <param name="FN"> FirstName</param>
/// <param name="LN"> LastName</param>
/// <returns></returns>
private static int FindID(string FN, string LN)
{
int id = -1;
DataTable aaa = ElectionDBClass.VotersTable();
foreach (DataRow dr in aaa.Rows)
{
if (dr[1].ToString() == FN && dr[2].ToString() == LN)
{
id = (int)dr[Convert.ToInt32(0)];
break;
}
else
{
return(-1);
}
}
return(id);
}
