string Decrypt(ChunkedEncryptedData ciphertext)
{
string decrypted;
switch (encryptionMethod)
{
case "RSA":
return(RSADecrypt(ciphertext, clientRSA));
break;
case "AES":
decrypted = AESDecryptStringFromBytes(ciphertext.datas[0].data, incomingPrivateKeys.key, incomingPrivateKeys.iv);
break;
case "DES":
decrypted = DESDecryptStringFromBytes(ciphertext.datas[0].data, incomingPrivateKeys.key, incomingPrivateKeys.iv);
break;
case "DES3":
decrypted = DES3DecryptStringFromBytes(ciphertext.datas[0].data, incomingPrivateKeys.key, incomingPrivateKeys.iv);
break;
default:
decrypted = Encoding.UTF8.GetString(ciphertext.datas[0].data);
break;
}
//incomingPrivateKeys.iv = ciphertext.datas[0].data;
return(decrypted);
}
string RSADecrypt(ChunkedEncryptedData chunkedData, RSACryptoServiceProvider rsa)
{
string[] chunked = new string[chunkedData.datas.Count];
for (int i = 0; i < chunked.Length; i++)
{
chunked[i] = Encoding.UTF8.GetString(rsa.Decrypt(chunkedData.datas[i].data, true));
}
return(UnChunk(chunked));
}
ChunkedEncryptedData RSAEncrypt(string plaintext, RSACryptoServiceProvider rsa)
{
string[] chunked = Chunk(plaintext, RSAChunkSize);
ChunkedEncryptedData c = new ChunkedEncryptedData();
c.datas = new List <EncryptedData>();
for (int i = 0; i < chunked.Length; i++)
{
EncryptedData d = new EncryptedData();
d.data = rsa.Encrypt(Encoding.UTF8.GetBytes(chunked[i]), true);
c.datas.Add(d);
}
return(c);
}
IEnumerator Exchange()
{
float startTime = Time.time;
ObjectInfoSet toSend = new ObjectInfoSet();
toSend.data = new List <ObjectInfo>();
for (int i = 0; i < parents.Length; i++)
{
toSend.data.Add(new ObjectInfo(parents[i]));
}
WWWForm form = new WWWForm();
form.AddField("data", JsonUtility.ToJson(Encrypt(JsonUtility.ToJson(toSend))));
using (UnityWebRequest webRequest = UnityWebRequest.Post(sendParentsURL, form)) {
yield return(webRequest.SendWebRequest());
if (webRequest.isNetworkError)
{
Debug.Log("Connection failed");
}
else
{
ChunkedEncryptedData d = JsonUtility.FromJson <ChunkedEncryptedData>(webRequest.downloadHandler.text);
ObjectInfoSet received = JsonUtility.FromJson <ObjectInfoSet>(Decrypt(d));
foreach (ObjectInfo o in received.data)
{
foreach (GameObject g in children)
{
if (g.name == o.name)
{
Debug.Log("Set " + g.name);
g.transform.position = o.position;
g.transform.rotation = UnityEngine.Quaternion.Euler(o.rotation);
}
}
}
}
}
float timePassed = (Time.time - startTime);
avgLatency = ((avgLatency * clicks) + timePassed) / (clicks + 1);
clicks += 1;
latency.text = "Avg. Latency: " + avgLatency;
}
IEnumerator EstablishConnectionToHost()
{
opening = false;
// Get the server public keys
using (UnityWebRequest webRequest = UnityWebRequest.Get(getPublicKeyURL)) {
yield return(webRequest.SendWebRequest());
if (webRequest.isNetworkError)
{
Debug.Log("Connection failed");
}
else
{
serverRSA = ImportPublicKey(JsonUtility.FromJson <RSAKeySet>(webRequest.downloadHandler.text));
}
}
//Encrypt my public keys and send them to server
WWWForm form1 = new WWWForm();
Handshake d = new Handshake();
d.n = clientPublicKeys.n;
d.e = clientPublicKeys.e;
d.playerNum = playerNum;
d.method = encryptionMethod;
string handshakeJson = JsonUtility.ToJson(d);
ChunkedEncryptedData e = RSAEncrypt(handshakeJson, serverRSA);
form1.AddField("data", JsonUtility.ToJson(e));
using (UnityWebRequest webRequest = UnityWebRequest.Post(getKeysURL, form1)) {
yield return(webRequest.SendWebRequest());
if (webRequest.isNetworkError)
{
Debug.Log("Connection failed");
}
else
{
string decryptedString = RSADecrypt(JsonUtility.FromJson <ChunkedEncryptedData>(webRequest.downloadHandler.text), clientRSA);
incomingPrivateKeys = JsonUtility.FromJson <PrivateKey>(decryptedString);
outgoingPrivateKeys = incomingPrivateKeys;
}
}
//StartCoroutine(Exchange());
//Wait for all players to connect
WWWForm form = new WWWForm();
form.AddField("PlayerID", playerNum);
while (!started)
{
using (UnityWebRequest webRequest = UnityWebRequest.Post(establishConnectionURL, form)) {
yield return(webRequest.SendWebRequest());
if (webRequest.isNetworkError)
{
Debug.Log("Connection failed");
}
else
{
if (webRequest.downloadHandler.text == "go")
{
started = true;
}
}
}
}
//started = false;
}
