public CASTCredential(Hmac hmac, HmacContent content)
{
this.Hmac = new HmacCredential(hmac, content);
}
public int SaveProgress(ProgressData progress)
{
//if connection is already invalidated
if (!ValidityMap.CurrentInstance.Contains(Context.ConnectionId) ||
!ValidityMap.CurrentInstance[Context.ConnectionId])
{
Debug.WriteLine("INVALID CONNECTION");
return(-1);
}
string dataRoot = AppDomain.CurrentDomain.GetData("DataDirectory").ToString();
//read cookie
string c = AESCryptoStuff.CurrentInstance.AesDecrypt(HttpUtility.UrlDecode(Context.RequestCookies["userID"].Value));
//current time in UTC
long utcTime = (long)(DateTime.Now - new DateTime(1970, 1, 1)).TotalMilliseconds;
Hmac h = Hmac.CurrentInstance;
#region SaveTime limit to 3 / min
//check database if it's too soon
Database d = Database.CurrentInstance; long[] times = new long[3];
//PRQ stands for Parameterized Reader Query, it returns a DataTable with all the rows
//First argument is the query, every argument after that is the parameters
//The @ parameters MUST START FROM 1 COUNTS UP FROM THERE
//you can have any number of @ parameters and corresponding method arguments for the values
DataTable dt = d.PRQ("SELECT * FROM savetime WHERE userID = @1", c);
if (dt == null)
{
return(-2); //if database not up
}
if (dt.Rows.Count > 0)
{
//if you want to loop
//foreach(DataRow dr in dt.Rows)
DataRow dr = dt.Rows[0];
//Field method returns the value of the column specified in the type in the angle brackets
times[0] = dr.Field <long>("time1");
times[1] = dr.Field <long>("time2");
times[2] = dr.Field <long>("time3");
}
else
{
//PNQ stands for Parameterized Non Query, it returns nothing
d.PNQ("INSERT INTO savetime (userID, time1, time2, time3) VALUES (@1, @2, @3, @4)",
c, 0, 0, utcTime);
times = new long[] { 0, 0, utcTime };
}
if (utcTime - times[0] < 60000) //4th save in a minute
{
return(0);
}
else
{
times[0] = utcTime;
Array.Sort(times);
d.PNQ("UPDATE savetime SET time1 = @1, time2 = @2, time3 = @3 WHERE userID = @4",
times[0], times[1], times[2], c);
}
#endregion
//get previous save data
SaveFile prevSave;
try
{
string prevSaveText = System.IO.File.ReadAllText(
dataRoot + "\\Saves\\" + h.Encode(c) + ".tusav");
prevSave = SaveFile.Parse(prevSaveText);
} catch (FileNotFoundException e) //no existing save
{
long defaultTime = utcTime - 100000; //100 seconds leeway
prevSave = new SaveFile(defaultTime, 0,
new Dictionary <int, int>(), new int[] { });
}
bool noCheats = ProgressVerifier.VerifyProgress(prevSave, progress, utcTime);
Debug.WriteLine("IS CHEATING: " + !noCheats);
//verify progress
if (!noCheats)
{
//if caught cheating
//insert cheat record into database
d.PNQ("INSERT INTO cheatlog (userID, time) VALUES (@1, @2)", c, utcTime);
ValidityMap.CurrentInstance[Context.ConnectionId] = false;
return(-1);
}
//save + time on first line
string s = "" + utcTime
+ '\n' + progress.ToString();
Debug.WriteLine("SAVING FOR " + h.Encode(c) + ":\n" + s);
//write to file
System.IO.File.WriteAllText(
dataRoot + "\\Saves\\" + h.Encode(c) + ".tusav", s);
return(1);
}
/**
* Base constructor.
*
* @param digest digest to build the HMAC on.
*/
public HmacDsaKCalculator(IHash digest)
{
this._hmac = new Hmac(digest);
this._v = new byte[_hmac.OutputSize];
this._k = new byte[_hmac.OutputSize];
}
public static string Get(byte[] data, Type type, byte[] key = null)
{
if (type == Type.QuickHash)
return Coder.BytesToString(ComputeQuickHash(data), Coder.CodePage.Hex);
var hashAlg = GetHashAlgorithm(type);
if ((key != null) && (hashAlg is BlockHashAlgorithm))
hashAlg = new Hmac(hashAlg as BlockHashAlgorithm, key);
return Coder.BytesToString(hashAlg.ComputeHash(data), Coder.CodePage.Hex);
}
//gets a save file and sends it to the client
public string RequestSave(string code)
{
Hmac h = Hmac.CurrentInstance;
//read cookie
Debug.WriteLine(Context.RequestCookies["userID"].Value);
string c = HttpUtility.UrlDecode(AESCryptoStuff.CurrentInstance.AesDecrypt(Context.RequestCookies["userID"].Value));
#region Check access code
DataTable dt = Database.CurrentInstance.PRQ(
"SELECT code FROM saveaccess WHERE userID = @1", c);
if (dt.Rows.Count == 0)
{
return("invalid:No access code");
}
bool validCode = false; code = HttpUtility.HtmlDecode(code);
foreach (DataRow r in dt.Rows)
{
if (r.Field <string>("code") == code)
{
validCode = true;
}
}
if (!validCode)
{
return("invalid:Wrong access code");
}
Database.CurrentInstance.PNQ(
"DELETE FROM saveaccess WHERE userID = @1", c);
ValidityMap.CurrentInstance.Add(Context.ConnectionId, true);
#endregion
if (c == null || c == "guest")
{
return("invalid:No username attached");
}
else
{
Debug.Write("GETTING SAVE FILE OF: " + c);
string dataRoot = AppDomain.CurrentDomain.GetData("DataDirectory").ToString();
Debug.WriteLine(dataRoot);
string saveFileLocation = dataRoot + "\\Saves\\" + h.Encode(c) + ".tusav";
if (File.Exists(saveFileLocation))
{
//get savefile
string s = System.IO.File.ReadAllText(saveFileLocation);
//remove time from save
string[] saveParts = s.Split('\n');
//get current time
long utcTime = (long)(DateTime.Now - new DateTime(1970, 1, 1)).TotalMilliseconds;
//send save to player
if (s[0] == '{') //convert old format to new format
{
System.IO.File.WriteAllText(
dataRoot + "\\Saves\\" + h.Encode(c) + ".tusav", "" + utcTime + "\n" + s.Replace("\n", ""));
return(s);
}
else
{
System.IO.File.WriteAllText(
dataRoot + "\\Saves\\" + h.Encode(c) + ".tusav", "" + utcTime + "\n" + saveParts[1]);
return(saveParts[1]);
}
}
else
{
return(null);
}
}
}
protected override BitString PseudoRandomFunction(BitString ni, BitString nr, BitString gxy = null, BitString cky_i = null, BitString cky_r = null, BitString presharedKey = null)
{
var key = _sha.HashMessage(ni.ConcatenateBits(nr)).Digest;
return Hmac.Generate(key, cky_i.ConcatenateBits(cky_r)).Mac;
}
/// <summary>
/// Create an instance of Security
/// </summary>
public Security()
{
Aes = new Aesgcm();
RSA = new RSA();
Hmac = new Hmac();
}
public void HashSizeTest(BlockHashAlgorithm hasher)
{
Hmac hmac = new Hmac(hasher);
Assert.AreEqual(hasher.HashSize, hmac.HashSize);
}
public void ConstructorNullHasherTest()
{
Hmac hmac = new Hmac(null);
}
public RequestAuth(Hmac hmac)
{
Hmac = hmac;
Validate();
}
///
/// Single block with a single transaction, in an immutable chain.
/// Standard SHA-256 Hashing
///
static void Main(string[] args)
{
//BlockChain chain = new BlockChain();
//IBlock block1 = new Block(0, "ABC123", 1000.00m, DateTime.Now, "QWE123", 10000, ClaimType.TotalLoss, null);
//IBlock block2 = new Block(1, "VBG345", 2000.00m, DateTime.Now, "JKH567", 20000, ClaimType.TotalLoss, block1);
//IBlock block3 = new Block(2, "XCF234", 3000.00m, DateTime.Now, "DH23ED", 30000, ClaimType.TotalLoss, block2);
//IBlock block4 = new Block(3, "CBHD45", 4000.00m, DateTime.Now, "DH34K6", 40000, ClaimType.TotalLoss, block3);
//IBlock block5 = new Block(4, "AJD345", 5000.00m, DateTime.Now, "28FNF4", 50000, ClaimType.TotalLoss, block4);
//IBlock block6 = new Block(5, "QAX367", 6000.00m, DateTime.Now, "FJK676", 60000, ClaimType.TotalLoss, block5);
//IBlock block7 = new Block(6, "CGO444", 7000.00m, DateTime.Now, "LKU234", 70000, ClaimType.TotalLoss, block6);
//IBlock block8 = new Block(7, "PLO254", 8000.00m, DateTime.Now, "VBN456", 80000, ClaimType.TotalLoss, block7);
//chain.AcceptBlock(block1);
//chain.AcceptBlock(block2);
//chain.AcceptBlock(block3);
//chain.AcceptBlock(block4);
//chain.AcceptBlock(block5);
//chain.AcceptBlock(block6);
//chain.AcceptBlock(block7);
//chain.AcceptBlock(block8);
//chain.VerifyChain();
//Console.WriteLine("");
//Console.WriteLine("");
//block4.CreatedDate = new DateTime(2017, 09, 20);
//chain.VerifyChain();
//Console.WriteLine();
// ITransaction txn1 = new Transaction("ABC123", 1000.00m, DateTime.Now, "QWE123", 10000, ClaimType.TotalLoss);
// ITransaction txn2 = new Transaction("VBG345", 2000.00m, DateTime.Now, "JKH567", 20000, ClaimType.TotalLoss);
// ITransaction txn3 = new Transaction("XCF234", 3000.00m, DateTime.Now, "DH23ED", 30000, ClaimType.TotalLoss);
// ITransaction txn4 = new Transaction("CBHD45", 4000.00m, DateTime.Now, "DH34K6", 40000, ClaimType.TotalLoss);
// ITransaction txn5 = new Transaction("AJD345", 5000.00m, DateTime.Now, "28FNF4", 50000, ClaimType.TotalLoss);
// ITransaction txn6 = new Transaction("QAX367", 6000.00m, DateTime.Now, "FJK676", 60000, ClaimType.TotalLoss);
// ITransaction txn7 = new Transaction("CGO444", 7000.00m, DateTime.Now, "LKU234", 70000, ClaimType.TotalLoss);
// ITransaction txn8 = new Transaction("PLO254", 8000.00m, DateTime.Now, "VBN456", 80000, ClaimType.TotalLoss);
// ITransaction txn9 = new Transaction("ABC123", 1000.00m, DateTime.Now, "QWE123", 10000, ClaimType.TotalLoss);
// ITransaction txn10 = new Transaction("VBG345", 2000.00m, DateTime.Now, "JKH567", 20000, ClaimType.TotalLoss);
// ITransaction txn11 = new Transaction("XCF234", 3000.00m, DateTime.Now, "DH23ED", 30000, ClaimType.TotalLoss);
// ITransaction txn12 = new Transaction("CBHD45", 4000.00m, DateTime.Now, "DH34K6", 40000, ClaimType.TotalLoss);
// ITransaction txn13 = new Transaction("AJD345", 5000.00m, DateTime.Now, "28FNF4", 50000, ClaimType.TotalLoss);
// ITransaction txn14 = new Transaction("QAX367", 6000.00m, DateTime.Now, "FJK676", 60000, ClaimType.TotalLoss);
// ITransaction txn15 = new Transaction("CGO444", 7000.00m, DateTime.Now, "LKU234", 70000, ClaimType.TotalLoss);
// ITransaction txn16 = new Transaction("PLO254", 8000.00m, DateTime.Now, "VBN456", 80000, ClaimType.TotalLoss);
// IBlock block1 = new BlockWithMultipleTransactions.Block(0);
// IBlock block2 = new BlockWithMultipleTransactions.Block(1);
// IBlock block3 = new BlockWithMultipleTransactions.Block(2);
// IBlock block4 = new BlockWithMultipleTransactions.Block(3);
// block1.AddTransaction(txn1);
// block1.AddTransaction(txn2);
// block1.AddTransaction(txn3);
// block1.AddTransaction(txn4);
// block2.AddTransaction(txn5);
// block2.AddTransaction(txn6);
// block2.AddTransaction(txn7);
// block2.AddTransaction(txn8);
// block3.AddTransaction(txn9);
// block3.AddTransaction(txn10);
// block3.AddTransaction(txn11);
// block3.AddTransaction(txn12);
// block4.AddTransaction(txn13);
// block4.AddTransaction(txn14);
// block4.AddTransaction(txn15);
// block4.AddTransaction(txn16);
// block1.SetBlockHash(null);
// block2.SetBlockHash(block1);
// block3.SetBlockHash(block2);
// block4.SetBlockHash(block3);
//BlockWithMultipleTransactions.BlockChain chain = new BlockWithMultipleTransactions.BlockChain();
// chain.AcceptBlock(block1);
// chain.AcceptBlock(block2);
// chain.AcceptBlock(block3);
// chain.AcceptBlock(block4);
// chain.VerifyChain();
// Console.WriteLine("");
// Console.WriteLine("");
// txn5.ClaimNumber = "weqwewe";
// chain.VerifyChain();
// Console.WriteLine();
ITransaction txn5 = SetupTransactions();
IKeyStore keyStore = new KeyStore(Hmac.GenerateKey());
IBlock block1 = new Block(0, keyStore);
IBlock block2 = new Block(1, keyStore);
IBlock block3 = new Block(2, keyStore);
IBlock block4 = new Block(3, keyStore);
AddTransactionsToBlocksAndCalculateHashes(block1, block2, block3, block4);
BlockChain chain = new BlockChain();
chain.AcceptBlock(block1);
chain.AcceptBlock(block2);
chain.AcceptBlock(block3);
chain.AcceptBlock(block4);
chain.VerifyChain();
Console.WriteLine("");
Console.WriteLine("");
txn5.ClaimNumber = "weqwewe";
chain.VerifyChain();
Console.WriteLine();
}
public HmacCredential(Hmac hmac, HmacContent content)
{
this.Hmac = hmac;
this.HmacContent = content;
this.Validate();
}