private void UploadKey(string hashsecret)
{
PublicKey keytoupload = new PublicKey
{
key = MyPublicKey.Modulus.ToBase64(),
exp = MyPublicKey.Exponent.ToBase64(),
secret = hashsecret
};
string json = JsonConvert.SerializeObject(keytoupload);
const string url = @"http://cst407.azurewebsites.net/Lab6/UploadPubKey";
WebClient webClient = new WebClient();
webClient.Headers[HttpRequestHeader.ContentType] = "application/json";
string responsejson = webClient.UploadString(url, json);
AcmeResponse <EmployeeID> response = JsonConvert.DeserializeObject <AcmeResponse <EmployeeID> >(responsejson);
if (response.Status == "OK")
{
EmpID = response.Data.ID;
SaveEmpID();
}
else
{
throw new Exception(response.Message);
}
}
private MissionDetails GetMissionDetails()
{
const string url = @"http://cst407.azurewebsites.net/Lab6/GetMissionDetails";
WebClient webClient = new WebClient();
string responsejson = webClient.DownloadString(url + "?id=" + EmpID);
AcmeResponse <MissionDetails> response = JsonConvert.DeserializeObject <AcmeResponse <MissionDetails> >(responsejson);
if (response.Status == "OK")
{
return(response.Data);
}
else
{
throw new Exception(response.Message);
}
}
public void UploadMissionDetails()
{
byte[] key = new byte[32];
byte[] iv = new byte[16];
using (RNGCryptoServiceProvider rng = new RNGCryptoServiceProvider())
{
rng.GetBytes(key);
rng.GetBytes(iv);
}
Aes aes = Aes.Create();
aes.Key = key;
aes.IV = iv;
ICryptoTransform encryptor = aes.CreateEncryptor();
byte[] encryptedMessageBytes;
using (MemoryStream ms = new MemoryStream())
{
using (CryptoStream cs = new CryptoStream(ms, encryptor, CryptoStreamMode.Write))
{
byte[] decryptedMissionBytes = DecryptedMessageResponse.GetBytes();
cs.Write(decryptedMissionBytes, 0, decryptedMissionBytes.Length);
}
encryptedMessageBytes = ms.ToArray();
}
string encryptedMessage = encryptedMessageBytes.ToBase64();
RSA rsa = RSA.Create(2048);
rsa.ImportParameters(AcmePublicKey);
byte[] encryptedKeyBytes = rsa.Encrypt(key, RSAEncryptionPadding.Pkcs1);
string encryptedKey = encryptedKeyBytes.ToBase64();
rsa.ImportParameters(MyPrivateKey);
byte[] signatureBytes = rsa.SignData(encryptedMessageBytes, HashAlgorithmName.SHA256, RSASignaturePadding.Pkcs1);
string signature = signatureBytes.ToBase64();
MissionResponse missionresponse = new MissionResponse
{
id = EmpID,
key = encryptedKey,
iv = iv.ToBase64(),
msg = encryptedMessage,
sig = signature
};
string json = JsonConvert.SerializeObject(missionresponse);
const string url = @"http://cst407.azurewebsites.net/Lab6/FinishMission";
WebClient webClient = new WebClient();
webClient.Headers[HttpRequestHeader.ContentType] = "application/json";
string responsejson = webClient.UploadString(url, json);
AcmeResponse <FinishMissionResponse> response = JsonConvert.DeserializeObject <AcmeResponse <FinishMissionResponse> >(responsejson);
if (response.Status == "OK")
{
MissionResponse = response.Data.Response;
}
else
{
throw new Exception(response.Message);
}
}
