/// <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);
}
