generateNewKey static method
Implementation
static KeyModel generateNewKey() {
// generate random 6 number start from 1 and end in length of letters
LettersKeyModel lettersKey = _generateLetterKeyModel();
// Build Key with this equation => ( n1 + n2 ) + ( n3 / n4 ) + ( n5 * n6 )
int key = _buildKey(lettersKey);
return KeyModel(key: key, letters: lettersKey);
}