private static void Main(string[] args)
{
var cipherText = new B64(File.ReadAllText(@"..\..\..\data.txt")).GetBytes();
var key = new Readable("YELLOW SUBMARINE").GetASCIIBytes();
Console.WriteLine("Decrypted text:");
Console.WriteLine(Decrypt(cipherText, key));
}
public static string ByteArrayToBase64(byte[] ByteArray, bool Urlsafe = true)
{
string B64;
B64 = System.Convert.ToBase64String(ByteArray);
if (Urlsafe)
{
B64 = B64.TrimEnd('=').Replace('+', '-').Replace('/', '_');
}
return(B64);
}
async Task MakePredictionRequest(MediaFile file)
{
Contract.Ensures(Contract.Result <Task>() != null);
//var client = new HttpClient();
//client.DefaultRequestHeaders.Add("Prediction-Key", "2596b2fb91e34f07b738da9bd906e5ef");
string url = "http://222.155.102.53:10008/receiveFile?";
Debug.WriteLine("hi");
byte[] byteData = GetImageAsByteArray(file);
String b64_data = Convert.ToBase64String(byteData);
B64 b64_class = new B64(b64_data);
var payload = JsonConvert.SerializeObject(b64_class);
var httpContent = new StringContent(payload, Encoding.UTF8, "application/json");
using (var httpClient = new HttpClient())
{
//content.Headers.ContentType = new MediaTypeHeaderValue("application/octet-stream");
try
{
await httpClient.PostAsync(url, null);
var response = await httpClient.PostAsync(url, httpContent);
if (response.Content != null)
{
var responseContent = await response.Content.ReadAsStringAsync();
}
}
catch (Exception ex)
{
throw new Exception("Unknown Exception Thrown: "
+ "\n Type: " + ex.GetType().Name
+ "\n Message: " + ex.Message);
}
Debug.WriteLine("making request....");
//Get rid of file once we have finished using it
file.Dispose();
}
}
public static Texture2D Get(string s)
{
if (icons == null)
{
icons = new Dictionary <string, Texture2D>();
}
bool load = false;
if (!icons.ContainsKey(s))
{
load = true;
}
else if (icons[s] == null)
{
load = true;
}
if (load)
{
for (int i = 0; i < SharedEmbed.num; i++)
{
if (SharedEmbed.n[i] != s)
{
continue;
}
var bb = B64.Decode("iVBORw0KGgoAAAAN" + SharedEmbed.i[i]);
var t = new Texture2D(SharedEmbed.x[i], SharedEmbed.y[i]);
t.LoadImage(bb);
t.hideFlags |= HideFlags.DontUnloadUnusedAsset;
if (icons.ContainsKey(s))
{
icons[s] = t;
}
else
{
icons.Add(SharedEmbed.n[i], t);
}
}
}
return(icons[s]);
}
private static void Main(string[] args)
{
const int maxKey = 40;
const int precision = 1;
var text = new B64
(File.ReadAllText(@"..\..\..\data.txt")).GetBytes();
var textSpan = new ReadOnlySpan <byte>(text);
var keyGuesses = new List <KeySizeGuess>();
for (var keysize = 2; keysize < maxKey + 1; keysize++)
{
var sum = 0D;
for (var i = 0; i < precision * 2; i += 2)
{
var first = textSpan.Slice(precision * keysize, keysize);
var second = textSpan.Slice((precision + 1) * keysize, keysize);
sum += (double)HammingDistance(first.ToArray(), second.ToArray()) / keysize;
}
var avg = sum / precision;
keyGuesses.Add(new KeySizeGuess
{
KeySize = keysize,
Scoring = avg
});
}
keyGuesses.Sort((a, b) => a.Scoring.CompareTo(b.Scoring));
var checkedKeys = keyGuesses.Take(5).ToList();
//Console.WriteLine($"Checked key sizes: {string.Join(',', checkedKeys.Select(k => k.KeySize))}");
var readables = new List <Readable>();
foreach (var checkedKey in checkedKeys)
{
readables.Add(SolveCipherForKeysize(text, checkedKey));
}
Console.WriteLine("Found text:");
Console.WriteLine(readables.Aggregate((agg, next) => next.Scoring > agg.Scoring ? next : agg).String);
}
public void Base64Test1()
{
string risposta = B64.Base64();
Assert.AreEqual("THVjcmV6aWE=", risposta);
}
