/// <summary>
/// Produce a sum of all digits that match the next step.
/// </summary>
/// <remarks>The list is circular.</remarks>
private static void Main()
{
const string KEY = "5255443714755555317777152441826784321918285999594221531636242944998363716119294845838579943562543247239969555791772392681567883449837982119239536325341263524415397123824358467891963762948723327774545715851542429832119179139914471523515332247317441719184556891362179267368325486642376685657759623876854958721636574219871249645773738597751429959437466876166273755524873351452951411628479352522367714269718514838933283861425982562854845471512652555633922878128558926123935941858532446378815929573452775348599693982834699757734714187831337546474515678577158721751921562145591166634279699299418269158557557996583881642468274618196335267342897498486869925262896125146867124596587989531495891646681528259624674792728146526849711139146268799436334618974547539561587581268886449291817335232859391493839167111246376493191985145848531829344198536568987996894226585837348372958959535969651573516542581144462536574953764413723147957237298324458181291167587791714172674717898567269547766636143732438694473231473258452166457194797819423528139157452148236943283374193561963393846385622218535952591588353565319432285579711881559343544515461962846879685879431767963975654347569385354482226341261768547328749947163864645168428953445396361398873536434931823635522467754782422557998262858297563862492652464526366171218276176258582444923497181776129436396397333976215976731542182878979389362297155819461685361676414725597335759976285597713332688275241271664658286868697167515329811831234324698345159949135474463624749624626518247831448143876183133814263977611564339865466321244399177464822649611969896344874381978986453566979762911155931362394192663943526834148596342268321563885255765614418141828934971927998994739769141789185165461976425151855846739959338649499379657223196885539386154935586794548365861759354865453211721551776997576289811595654171672259129335243531518228282393326395241242185795828261319215164262237957743232558971289145639852148197184265766291885259847236646615935963759631145338159257538114359781854685695429348428884248972177278361353814766653996675994784195827214295462389532422825696456457332417366426619555";
char[] tokenised = KEY.ToCharArray();
int part1Sum = SolveCaptcha(tokenised, 1);
Console.WriteLine($"Result 1: {part1Sum}");
int part2Sum = SolveCaptcha(tokenised, tokenised.Length / 2);
Console.WriteLine($"Result 2: {part2Sum}");
Console.ReadKey();
}
public string encryptPassword()
{
/******************************************************
* /*name: Encrypt Password
* /* Description: After the user has had the password verified and validated, then encrypt it prior to inserting into the database
* /* Inputs : a password to be encrypted
* /* Outputs: the encrypted password
* /********************************************************************/
string encryptedPassword = "";
int ASCIIValue;
int KeyASCIIValue;
const string KEY = "ABCDE";
const int NUMKEY = 5;
char[] CharKey = KEY.ToCharArray();
int letterkey;
int count = 0;
//simple cypher with a AlphaKey, going to extend this to a greater key encryption later.
foreach (char letter in UserPassword.ToCharArray())
{
ASCIIValue = (int)letter;
if (count < KEY.Length)
{
letterkey = CharKey[count];
KeyASCIIValue = (int)letterkey;
KeyASCIIValue = KeyASCIIValue % NUMKEY;
ASCIIValue = ASCIIValue + KeyASCIIValue;
count = count + 1;
}
else
{
count = 0;
}
encryptedPassword = encryptedPassword + (char)ASCIIValue;
}
return(encryptedPassword);
}