public void KeysGenerator()
{
CURPGenerator();
//Take the base characaters for the RFC
RFC = CURP.Substring(0, 10);
//The next characters represent a homonymous key
#region Character 11 and 12
//Variables
string numbers = string.Empty;
int amount = 0, residue = 0;
#region Letters values
string Data = string.Concat(MiddleName, " ", LastName, " ", Names);
//Take the each value that the letter represent acording from a stablished table and concat each value
foreach (char item in Data)
{
numbers += (item >= 65 && item <= 90) ? (item == 165 ? (item - 125) : item > 82 ? (item - 51) : item > 73 ? (item - 53) : (item - 54)) :
00;
}
#endregion
#region Operation and construction of homonim letters
//Put a 0 to make string not pair
numbers = '0' + numbers;
//Make the multiplication of 2 numbers with the last of this pair and sum all results
for (int i = 0; i < numbers.Length - 1; i++)
{
amount += int.Parse(numbers.Substring(i, 2)) * int.Parse(numbers.Substring(i + 1, 1));
}
//Take the last 3 digits
amount = amount % 1000;
//Divide in two parts to take the letters that correspond
residue = amount % 34;
amount = amount / 34;
//with the funtion concat the letters
RFC += HomonymousDigits(amount);
RFC += HomonymousDigits(residue);
#endregion
#endregion
#region Character 13
int digit = 0, counter = 13;
//Calculate the last digit from the sum of the multiplication of each value digit their position
foreach (char item in RFC)
{
digit += (char)((item >= 65 && item <= 90) ? (item > 78 ? (counter * (item - 54)) : (counter * (item - 55))) : (counter * (item - 48)));
counter--;
}
//After that follow the next formula
digit = digit % 11;
//Depending of the amount, asigns the correspond digit
RFC += digit == 0 ? "0" : digit == 10 ? "A" : (11 - digit).ToString();
#endregion
}
/// <summary>
/// This function generate the CURP from the personal information
/// </summary>
public void CURPGenerator()
{
CURP = string.Empty;
#region Full name preparation
string names = FilterBaseNames(Names);
string middleName = FilterBaseNames(MiddleName);
string lastName = FilterBaseNames(LastName);
#endregion
//Words array that can't be appeared in the CURP or RFC for the first 4 letters
string [] swearWords = { "BACA", "BAKA", "BUEI", "BUEY", "CACA", "CACO", "CAGA", "CAGO", "CAKA", "CAKO", "COGE", "COGI", "COJA", "COJE", "COJI", "COJO", "COLA", "CULO", "FALO", "FETO", "GETA", "GUEI", "GUEY", "JETA", "JOTO", "KACA", "KACO", "KAGA", "KAGO", "KAKA", "KAKO", "KOGE", "KOGI", "KOJA", "KOJE", "KOJI", "KOJO", "KOLA", "KULO", "LILO",
"LOCA", "LOCO", "LOKA", "LOKO", "MAME", "MAMO", "MEAR", "MEAS", "MEON", "MIAR", "MION", "MOCO", "MOKO", "MULA", "MULO", "NACA", "NACO", "PEDA", "PEDO", "PENE", "PIPI", "PITO", "POPO", "PUTA", "PUTO", "QULO", "RATA", "ROBA", "ROBE", "ROBO", "RUIN", "SENO", "TETA", "VACA", "VAGA", "VAGO", "VAKA", "VUEI", "VUEY", "WUEI", "WEY" };
#region Character 1
//Take the first letter of the middle name, if it's a 'Ñ', will be replace for a 'X'
CURP += middleName[0] == 'Ñ' ? 'X' : middleName[0];
#endregion
#region Character 2
//Take the first middlename vowel
foreach (char item in middleName.Substring(1))
{
if (item == 'A' || item == 'E' || item == 'I' || item == 'O' || item == 'U')
{
CURP += item;
break;
}
}
#endregion
#region Character 3
//Take the first letter of the lastname, if it's a 'Ñ', will be replace for a 'X'
CURP += lastName[0] == 'Ñ' ? 'X' : lastName[0];
#endregion
#region Character 4
//Take the first letter of the names, if it's a 'Ñ', will be replace for a 'X'
CURP += names[0] == 'Ñ' ? 'X' : names[0];
#endregion
#region Verification of the frist 4 characters
//Check if the string doesn't form a swear word in the array
if (swearWords.Contains(CURP))
{
//If yes, the first vowel is replace for a 'X'
CURP = CURP[0] + 'X' + CURP.Substring(2, 2);
}
#endregion
#region Characters 5 to 11
//Take the year, month and day of birthday to 2 digits
CURP += $"{BirthDate:yy}{BirthDate:MM}{BirthDate:dd}";
#endregion
#region Character 12
//Concat the person gender
CURP += Gender;
#endregion
#region Character 13
//Concat the identifiers for the Jalisco state
CURP += "JC";
#endregion
#region Character 14 to 16
//Take the consonant in each case, without taking the first letter
CURP += Consonant(middleName.Substring(1));
CURP += Consonant(LastName.Substring(1));
CURP += Consonant(Names.Substring(1));
#endregion
#region Character 17
//If the year of birthday is lees than 2000, cancat a 0, else, concat an A
CURP += BirthDate.Year < 2000 ? '0' : 'A';
#endregion
#region Caracter 18
//This digit is calculated from the sum of the multiplication of each value digit with their position
int amount = 0, counter = 18;
foreach (char item in CURP)
{
//If digit is a letter, the counter is multiplied for the value in ascii minus 55
//Else the digit is a number, it is multiplied for the counter
amount += (item >= 65 && item <= 90) ? (item > 78 ? (counter * (item - 54)) : (counter * (item - 55))) : (counter * (item - 48));
counter--;
}
//After that follow the next formula
amount = 10 - (amount % 10);
//If the result is a 10, it was replace for a 0
CURP += amount == 10 ? 0 : amount;
#endregion
}
