public byte[] Encription(string message, byte[] bobPubKeyBlob)
{
byte[] rawData = Encoding.UTF8.GetBytes(message);
byte[] encryptedData = null;
using (var aliceAlgorithm = new ECDiffieHellmanCng(privKey))
using (CngKey bobPubKey = CngKey.Import(bobPubKeyBlob,
CngKeyBlobFormat.EccPublicBlob))
{
byte[] symmKey = aliceAlgorithm.DeriveKeyMaterial(bobPubKey);
using (var aes = new AesCryptoServiceProvider())
{
aes.Key = symmKey;
aes.GenerateIV();
using (ICryptoTransform encryptor = aes.CreateEncryptor())
using (MemoryStream ms = new MemoryStream())
{
// create CryptoStream and encrypt data to send
var cs = new CryptoStream(ms, encryptor, CryptoStreamMode.Write);
// write initialization vector not encrypted
ms.Write(aes.IV, 0, aes.IV.Length);
cs.Write(rawData, 0, rawData.Length);
cs.Close();
encryptedData = ms.ToArray();
}
aes.Clear();
}
}
return encryptedData;
}
protected void Application_Start()
{
//HibernatingRhinos.Profiler.Appender.EntityFramework.EntityFrameworkProfiler.Initialize();
log4net.Config.XmlConfigurator.ConfigureAndWatch(new FileInfo(Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "log4net.config")));
GlobalConfig.Log = log4net.LogManager.GetLogger(System.Reflection.MethodBase.GetCurrentMethod().DeclaringType);
AreaRegistration.RegisterAllAreas();
WebApiConfig.Register(GlobalConfiguration.Configuration);
FilterConfig.RegisterGlobalFilters(GlobalFilters.Filters);
RouteConfig.RegisterRoutes(RouteTable.Routes);
BundleConfig.RegisterBundles(BundleTable.Bundles);
AuthConfig.RegisterAuth();
var container = new Container();
SimpleInjectorInitializer.InitializeInjector(container);
DependencyResolver.SetResolver(new SimpleInjectorDependencyResolver(container));
GlobalConfig.ConnectionString = System.Web.Configuration.WebConfigurationManager.ConnectionStrings["DefaultConnection"].ConnectionString;
GlobalConfig.GadgetTypes = new System.Collections.Concurrent.ConcurrentDictionary<string, Type>();
LoadGadgets();
var aesCsp = new AesCryptoServiceProvider();
aesCsp.GenerateKey();
aesCsp.GenerateIV();
GlobalConfig.Encryptor = new SimpleAES(aesCsp.Key, aesCsp.IV);
}
/// <summary>
/// Generates a unique encryption vector
/// </summary>
/// <returns>byte[] vector value</returns>
static public byte[] GenerateEncryptionVector()
{
//Generate a Vector
var aesProvider = new AesCryptoServiceProvider();
aesProvider.GenerateIV();
return aesProvider.IV;
}
private void OnGenerate(object sender, EventArgs e)
{
// Create the AES provider.
using (AesCryptoServiceProvider aesProvider = new AesCryptoServiceProvider())
{
// Generate the IV.
aesProvider.GenerateIV();
// Generate the key.
aesProvider.GenerateKey();
StringBuilder builder = new StringBuilder();
foreach (byte b in aesProvider.IV)
{
builder.AppendFormat("0x{0:X2}, ", b);
}
this.textBoxIv.Text = builder.ToString();
builder.Clear();
foreach(byte b in aesProvider.Key)
{
builder.AppendFormat("0x{0:X2}, ", b);
}
this.textBoxKey.Text = builder.ToString();
}
}
public void Encrypt(string filename)
{
FileStream fsInput = new FileStream(filename, FileMode.Open, FileAccess.Read);
FileStream fsOutput = new FileStream(filename + ".crypt", FileMode.Create, FileAccess.Write);
AesCryptoServiceProvider Aes = new AesCryptoServiceProvider();
Aes.KeySize = 128;
Aes.GenerateIV();
Aes.GenerateKey();
byte[] output = _algorithm_asym.Encrypt(Aes.Key, false);
fsOutput.Write(output, 0, 256);
output = _algorithm_asym.Encrypt(Aes.IV, false);
fsOutput.Write(output, 0, 256);
ICryptoTransform encrypt = Aes.CreateEncryptor();
CryptoStream cryptostream = new CryptoStream(fsOutput, encrypt, CryptoStreamMode.Write);
byte[] bytearrayinput = new byte[fsInput.Length - 1];
fsInput.Read(bytearrayinput, 0, bytearrayinput.Length);
cryptostream.Write(bytearrayinput, 0, bytearrayinput.Length);
fsInput.Close();
fsOutput.Close();
}
private static byte[] AliceSendData(string msg)
{
Console.WriteLine(string.Format("Alice Send Msg: {0}", msg));
byte[] rawdata = Encoding.UTF8.GetBytes(msg);
byte[] encryptedData = null;
using (var aliceAlgorithm = new ECDiffieHellmanCng(aliceKey))
using (CngKey bobPubKey = CngKey.Import(bobPubKeyBlob, CngKeyBlobFormat.EccPublicBlob))
{
byte[] symmkey = aliceAlgorithm.DeriveKeyMaterial(bobPubKey);
Console.WriteLine(string.Format("Alice Create this symmtric key with {0}", Convert.ToBase64String(symmkey)));
var aes = new AesCryptoServiceProvider();
aes.Key = symmkey;
aes.GenerateIV();
using (ICryptoTransform encryptor = aes.CreateEncryptor())
using (MemoryStream ms = new MemoryStream())
{
var cs = new CryptoStream(ms, encryptor, CryptoStreamMode.Write);
ms.Write(aes.IV, 0, aes.IV.Length);
cs.Write(rawdata, 0, rawdata.Length);
cs.Close();
encryptedData = ms.ToArray();
}
aes.Clear();
}
Console.WriteLine(Convert.ToBase64String(encryptedData));
return encryptedData;
}
public static byte[] Encrypt(byte[] input, byte[] key)
{
if (key == null || key.Length == 0) throw new Exception("Key can not be empty.");
using (var md5 = new MD5CryptoServiceProvider())
{
key = md5.ComputeHash(key);
}
byte[] data = input, encdata = new byte[0];
try
{
using (var ms = new MemoryStream())
{
using (var aesProvider = new AesCryptoServiceProvider() { Key = key })
{
aesProvider.GenerateIV();
using (var cs = new CryptoStream(ms, aesProvider.CreateEncryptor(), CryptoStreamMode.Write))
{
ms.Write(aesProvider.IV, 0, aesProvider.IV.Length); // write first 16 bytes IV, followed by encrypted message
cs.Write(data, 0, data.Length);
}
}
encdata = ms.ToArray();
}
}
catch
{
}
return encdata;
}
private async static Task<byte[]> AliceSendsData(string message)
{
Console.WriteLine("Alice send message {0}", message);
byte[] rawData = Encoding.UTF8.GetBytes(message);
byte[] encryptedData = null;
using(var aliceAlgo = new ECDiffieHellmanCng(aliceKey))
{
using(CngKey bobPubKey = CngKey.Import(bobPubKeyBlob, CngKeyBlobFormat.GenericPublicBlob))
{
byte[] symmKey = aliceAlgo.DeriveKeyMaterial(bobPubKey);
Console.WriteLine("Alice create this symm key with Bobs public key information : {0}", Convert.ToBase64String(symmKey));
using(var aes = new AesCryptoServiceProvider())
{
aes.Key = symmKey;
aes.GenerateIV();
using(ICryptoTransform encryptor = aes.CreateEncryptor())
{
using(MemoryStream ms = new MemoryStream())
{
var cs = new CryptoStream(ms, encryptor,CryptoStreamMode.Write);
await ms.WriteAsync(aes.IV, 0, aes.IV.Length);
cs.Write(rawData, 0, rawData.Length);
cs.Close();
encryptedData = ms.ToArray();
}
}
aes.Clear();
}
}
}
Console.WriteLine("Alice message is encrypted : {0}", Convert.ToBase64String(encryptedData));
return encryptedData;
}
protected override string EncryptByBlocks(byte[] key,
List<byte> plainText)
{
var cipherText = new StringBuilder();
if (plainText.Count % BlockSize == 0)
{
AddDummyBlock(plainText);
}
using (var aes = new AesCryptoServiceProvider())
{
aes.BlockSize = BlockSize * 8;
aes.KeySize = KeySize * 8;
aes.Padding = PaddingMode.None;
aes.Key = key;
aes.GenerateIV();
cipherText.Append(BytesToHexString(aes.IV));
using (var encr = aes.CreateEncryptor())
{
while (plainText.Count != 0)
{
var block = DetachBlock(plainText);
if (block.Length < BlockSize)
{
block = CompleteBlock(block);
}
var encrypted = new byte[BlockSize];
encr.TransformBlock(block, 0, BlockSize, encrypted, 0);
cipherText.Append(BytesToHexString(encrypted));
aes.IV = encrypted;
}
}
}
return cipherText.ToString();
}
/// <summary>
/// AES Encryption
/// </summary>
public static string Encrypt(string clearText)
{
if (clearText == null) return null;
// AesCryptoServiceProvider
AesCryptoServiceProvider aes = new AesCryptoServiceProvider();
aes.BlockSize = 128;
aes.KeySize = 128;
aes.GenerateIV();
aes.Key = Encoding.UTF8.GetBytes(AesKey);
aes.Mode = CipherMode.CBC;
aes.Padding = PaddingMode.PKCS7;
// Convert string to byte array
byte[] src = Encoding.Unicode.GetBytes(clearText);
// encryption
using (ICryptoTransform encrypt = aes.CreateEncryptor())
{
byte[] dest = encrypt.TransformFinalBlock(src, 0, src.Length);
// Convert byte array to Base64 strings
return Convert.ToBase64String(aes.IV) + Convert.ToBase64String(dest);
}
}
public static AesCryptoServiceProvider generateAESKey()
{
AesCryptoServiceProvider aes = new AesCryptoServiceProvider();
aes.KeySize = 256;
aes.GenerateKey();
aes.GenerateIV();
return aes;
}
// Create an object of type IV from a given object of type Key.
// Usage of AesCryptoServiceProvider:
// - create it
// - set its key size according the the size of the input Key
// - use GenerateIV()
public static IV createRandomIV(Key key)
{
using (var aes = new AesCryptoServiceProvider())
{
aes.KeySize = key.Format.BitSize.signed();
// this should not be required?
// aes.Key = key.Data;
aes.GenerateIV();
return new IV(aes.IV);
}
}
/// <summary>
/// Encrypt data with AES algorithm
/// </summary>
/// <param name="data"></param>
/// <param name="key"></param>
/// <param name="iv"></param>
/// <returns></returns>
public static byte[] AesEncrypt(byte[] data, out byte[] key, out byte[] iv)
{
if (data == null)
throw new ArgumentNullException("No data to encrypt.");
using (AesCryptoServiceProvider provider = new AesCryptoServiceProvider())
{
provider.GenerateKey();
provider.GenerateIV();
key = provider.Key;
iv = provider.IV;
return provider.CreateEncryptor().TransformFinalBlock(data, 0, data.Length);
}
}
private static AesCryptoServiceProvider getProvider(byte[] keyPhrase)
{
AesCryptoServiceProvider result = new AesCryptoServiceProvider();
result.BlockSize = 128;
result.KeySize = 128;
result.Mode = CipherMode.CBC;
result.Padding = PaddingMode.PKCS7;
result.GenerateIV();
result.IV = new byte[] { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
byte[] key = getKey(keyPhrase, result);
result.Key = key;
// result.IV = RealKey;
return result;
}
public static byte[] Encrypt(byte[] input, byte[] password, ushort saltSize, int iterations)
{
var salt = CreateSalt(saltSize);
using (var aes = new AesCryptoServiceProvider())
{
aes.BlockSize = 128;
aes.KeySize = 256;
using (var key = new Rfc2898DeriveBytes(password, salt, iterations))
{
aes.Key = key.GetBytes(16);
aes.Mode = CipherMode.CBC;
aes.Padding = PaddingMode.PKCS7;
aes.GenerateIV();
using (var memStream = new MemoryStream())
{
//While a byte would suffice,
//we'll take the sure-thing and just use a ushort instead, this allows a key-length of 65535 tokens.
var bytes = new byte[sizeof(ushort)];
fixed (void* b = bytes)
*((ushort*)b) = saltSize;
memStream.Write(bytes, 0, bytes.Length);
fixed (void* b = bytes)
*((ushort*)b) = (ushort)aes.IV.Length;
memStream.Write(bytes, 0, bytes.Length);
memStream.Write(salt, 0, salt.Length);
memStream.Write(aes.IV, 0, aes.IV.Length);
using (var encryptor = aes.CreateEncryptor())
using (var cryptoStream = new CryptoStream(memStream, encryptor, CryptoStreamMode.Write))
{
cryptoStream.Write(input, 0, input.Length);
cryptoStream.FlushFinalBlock();
var encrypted = memStream.ToArray();
return encrypted;
}
}
}
}
}
public static EncryptionResult AesEncrypt(byte[] data, byte[] key)
{
EncryptionResult result;
using(var crypto = new AesCryptoServiceProvider {Key = key})
{
crypto.GenerateIV();
result.IV = crypto.IV;
var encryptor = crypto.CreateEncryptor();
using (var stream = new MemoryStream())
using (var cryptoStream = new CryptoStream(stream, encryptor, CryptoStreamMode.Write))
{
cryptoStream.Write(data);
cryptoStream.FlushFinalBlock();
result.EncryptedData = stream.ToArray();
}
}
return result;
}
public TestSymmetricKeyProvider()
{
byte[] key;
byte[] iv;
using (var provider = new AesCryptoServiceProvider())
{
provider.GenerateIV();
provider.GenerateKey();
key = provider.Key;
iv = provider.IV;
provider.Clear();
}
_key = new TestSymmetricKey(key, iv);
}
static void Main()
{
AesCryptoServiceProvider aes = new AesCryptoServiceProvider();
aes.GenerateKey();
aes.GenerateIV();
//Tworzenie CryptoTransform
ICryptoTransform En = aes.CreateEncryptor();
ICryptoTransform De = aes.CreateDecryptor();
//Tworzenie potrzebnych zmiennych
byte[] before = Encoding.UTF8.GetBytes("AES");
byte[] after;
byte[] end = new byte[1024];
string result;
//szyfrowanie
using (MemoryStream mem = new MemoryStream())
{
using (CryptoStream crypt = new CryptoStream(mem, En, CryptoStreamMode.Write))
{
crypt.Write(before, 0, before.Length);
}
after = mem.ToArray();
}
//deszyfracja
using (MemoryStream mem = new MemoryStream(after))
{
int i;
using (CryptoStream crypt = new CryptoStream(mem, De, CryptoStreamMode.Read))
{
i = crypt.Read(end, 0, end.Length);
}
result = Encoding.UTF8.GetString(end, 0, i);
}
//wypisanie na ekran informacji.
Console.WriteLine("Wiadomość: {0}", Encoding.UTF8.GetString(before));
Console.WriteLine("Zaszyfrowana wiadomość: {0}", Encoding.UTF8.GetString(after));
Console.WriteLine("Odszyfrowana wiadomość: {0}", result);
Console.ReadKey();
}
public byte[] EncryptToken(AuthenticationToken authenticationToken)
{
byte[] tokenBytes = authenticationToken.Serialize();
var symmetricAlgorithm = new AesCryptoServiceProvider { Key = Convert.FromBase64String(authenticationKey) };
symmetricAlgorithm.GenerateIV();
var transform = symmetricAlgorithm.CreateEncryptor();
using (var stream = new MemoryStream())
{
var writer = new BinaryWriter(stream);
writer.Write(symmetricAlgorithm.IV.Length);
writer.Write(symmetricAlgorithm.IV);
using (var cryptoStream = new CryptoStream(stream, transform, CryptoStreamMode.Write))
{
cryptoStream.Write(tokenBytes, 0, tokenBytes.Length);
}
return stream.ToArray();
}
}
public string Encrypt(string plainText, string password)
{
if (plainText == null)
{
throw new ArgumentNullException("plainText");
}
if (string.IsNullOrEmpty(password))
{
throw new ArgumentNullException("password");
}
// create instance of the AES crypto provider
var aes = new AesCryptoServiceProvider();
// generate a random IV will be used a salt value for generating key
aes.GenerateIV();
// use derive bytes to generate a key from the password and IV
var rfc2898DeriveBytes = new Rfc2898DeriveBytes(password, aes.IV, Iterations);
// generate a key from the password provided
byte[] key = rfc2898DeriveBytes.GetBytes(16);
// encrypt the plainText
using (var memoryStream = new MemoryStream())
using (var cryptoStream = new CryptoStream(memoryStream, aes.CreateEncryptor(key, aes.IV), CryptoStreamMode.Write))
{
// write the salt first not encrypted
memoryStream.Write(aes.IV, 0, aes.IV.Length);
// convert the plain text string into a byte array
byte[] bytes = Encoding.UTF8.GetBytes(plainText);
// write the bytes into the crypto stream so that they are encrypted bytes
cryptoStream.Write(bytes, 0, bytes.Length);
cryptoStream.FlushFinalBlock();
return Convert.ToBase64String(memoryStream.ToArray());
}
}
public static byte[] Encrypt(string publicKey, byte[] data)
{
using (var aes = new AesCryptoServiceProvider())
{
aes.GenerateKey();
aes.GenerateIV();
using (var encryptor = aes.CreateEncryptor())
using (var ms = new MemoryStream())
{
ms.Write(Rsa.Encrypt(publicKey, aes.IV), 0, 128);
ms.Write(Rsa.Encrypt(publicKey, aes.Key), 0, 128);
using (var cs = new CryptoStream(ms, encryptor, CryptoStreamMode.Write))
{
cs.Write(data, 0, data.Length);
}
return ms.ToArray();
}
}
}
public static byte[] Encrypt(string publicKey, byte[] data)
{
using (var aes = new AesCryptoServiceProvider())
{
aes.GenerateKey();
aes.GenerateIV();
using (var encryptor = aes.CreateEncryptor())
using (var ms = new MemoryStream())
{
ms.Write(Rsa.Encrypt(publicKey, aes.IV), 0, 128);
ms.Write(Rsa.Encrypt(publicKey, aes.Key), 0, 128);
using (var cs = new CryptoStream(ms, encryptor, CryptoStreamMode.Write))
{
cs.Write(data, 0, data.Length);
}
return(ms.ToArray());
}
}
}
public string DecryptFile(byte[] data)
{
AesCryptoServiceProvider aes = new AesCryptoServiceProvider();
aes.GenerateIV();
byte[] iv = aes.IV;
aes.GenerateKey();
byte[] key = aes.Key;
ICryptoTransform cryptoTransform = aes.CreateEncryptor();
MemoryStream memoryStream = new MemoryStream();
CryptoStream cryptoStream = new CryptoStream(memoryStream, cryptoTransform, CryptoStreamMode.Write);
StreamWriter streamWriter = new StreamWriter(cryptoStream);
memoryStream = new MemoryStream(data);
cryptoStream = new CryptoStream(memoryStream, aes.CreateDecryptor(), CryptoStreamMode.Read);
StreamReader streamReader = new StreamReader(cryptoStream);
string decryptText = streamReader.ReadToEnd();
streamWriter.Dispose();
cryptoStream.Dispose();
memoryStream.Dispose();
return decryptText;
}
private async Task<byte[]> AliceSendsDataAsync(string message)
{
WriteLine($"Alice sends message: {message}");
byte[] rawData = Encoding.UTF8.GetBytes(message);
byte[] encryptedData = null;
using (var aliceAlgorithm = new ECDiffieHellmanCng(_aliceKey))
using (CngKey bobPubKey = CngKey.Import(_bobPubKeyBlob,
CngKeyBlobFormat.EccPublicBlob))
{
byte[] symmKey = aliceAlgorithm.DeriveKeyMaterial(bobPubKey);
WriteLine("Alice creates this symmetric key with " +
$"Bobs public key information: { Convert.ToBase64String(symmKey)}");
using (var aes = new AesCryptoServiceProvider())
{
aes.Key = symmKey;
aes.GenerateIV();
using (ICryptoTransform encryptor = aes.CreateEncryptor())
using (var ms = new MemoryStream())
{
// create CryptoStream and encrypt data to send
using (var cs = new CryptoStream(ms, encryptor, CryptoStreamMode.Write))
{
// write initialization vector not encrypted
await ms.WriteAsync(aes.IV, 0, aes.IV.Length);
await cs.WriteAsync(rawData, 0, rawData.Length);
}
encryptedData = ms.ToArray();
}
aes.Clear();
}
}
WriteLine($"Alice: message is encrypted: {Convert.ToBase64String(encryptedData)}"); ;
WriteLine();
return encryptedData;
}
private void initialize(string password,byte[] salt, byte[] iv)
{
AesCryptoServiceProvider csp=new AesCryptoServiceProvider();
csp.Mode = CipherMode.CBC;
csp.Padding = PaddingMode.PKCS7;
var spec = new Rfc2898DeriveBytes(Encoding.UTF8.GetBytes(password), salt, 65536);
byte[] key = spec.GetBytes(16);
csp.Key = key;
if (iv == null) //enc
{
csp.GenerateIV();
this.IV = csp.IV;
ict = csp.CreateEncryptor();
}
else
{
csp.IV = iv;
ict = csp.CreateDecryptor();
this.IV = iv;
}
}
public TestSymmetricKeyProvider(params string[] ids)
{
_keys = new Dictionary<string, TestSymmetricKey>();
foreach (var id in ids.Concat(new[] {"default"}).Distinct())
{
byte[] key;
byte[] iv;
using (var provider = new AesCryptoServiceProvider())
{
provider.GenerateIV();
provider.GenerateKey();
key = provider.Key;
iv = provider.IV;
provider.Clear();
}
_keys.Add(id, new TestSymmetricKey(key, iv));
}
}
/// <summary>
/// データを暗号化し、ファイルに出力します。
/// </summary>
/// <param name="ms">暗号化したいメモリストリーム</param>
/// <param name="outfilepath">出力ファイルの名前</param>
public static void EncryptionData(MemoryStream ms, string outfilepath)
{
//AesCryptoServiceProviderオブジェクトの作成
using (AesCryptoServiceProvider aes = new AesCryptoServiceProvider()) {
aes.BlockSize = 128; //ブロックサイズ(128bit)
aes.KeySize = 128; //キー最大長(128bit)
aes.Mode = CipherMode.CBC; //CBCモード
aes.Padding = PaddingMode.PKCS7; //パディングモード
aes.GenerateIV();
byte[] bytesIV = aes.IV; //初期化ベクトルの設定と取得（ブロックサイズと同サイズ=128bit）
aes.Key = AESTransformBytes(PASSWORD); //キーの設定
ICryptoTransform encrypt = aes.CreateEncryptor(); //AES暗号化オブジェクトの作成
//FileStreamの生成
using (System.IO.FileStream outfs = new System.IO.FileStream(outfilepath, System.IO.FileMode.Create, System.IO.FileAccess.Write)) {
outfs.Write(bytesIV, 0, 16); //IVを先頭に書き込む(128bit=16bytes)
//CryptoStreamの作成
using (CryptoStream cs = new CryptoStream(
outfs, encrypt, CryptoStreamMode.Write)) {
//暗号化データを書き出していく
byte[] buffer = new byte[4096];//[2048];//byte[1024]
int length;
while ((length = ms.Read(buffer, 0, buffer.Length)) > 0) {
cs.Write(buffer, 0, length);// bufferは87くらいまでしか使われてない
}
}
}
}
}
public byte[] EncryptFile(string text)
{
AesCryptoServiceProvider aes = new AesCryptoServiceProvider();
aes.GenerateIV();
byte[] iv = aes.IV;
aes.GenerateKey();
byte[] key = aes.Key;
ICryptoTransform cryptoTransform = aes.CreateEncryptor();
MemoryStream memoryStream = new MemoryStream();
CryptoStream cryptoStream = new CryptoStream(memoryStream, cryptoTransform, CryptoStreamMode.Write);
StreamWriter streamWriter = new StreamWriter(cryptoStream);
streamWriter.Write(text);
byte[] enryptText = memoryStream.ToArray();
streamWriter.Dispose();
cryptoStream.Dispose();
memoryStream.Dispose();
return enryptText;
}
/// <summary>
/// Encrypts string to an array of bytes using an AesCryptoServiceProvider.
/// </summary>
/// <param name="plainText">Input value to be necrypted.</param>
/// <param name="Key">Key used in the encryption process.</param>
/// <returns>An ecnrypted byte array.</returns>
public static byte[] EncryptStringToBytes_Aes(string plainText, byte[] Key)
{
// Check arguments.
if (string.IsNullOrWhiteSpace(plainText))
{
throw new ArgumentNullException("plainText");
}
if (Key == null || Key.Length <= 0)
{
throw new ArgumentNullException("Key");
}
// Byte array used to store the encrypted data.
byte[] encrypted;
// Create an AesCryptoServiceProvider object with the specified key and
// a random IV.
using (var aesAlg = new AesCryptoServiceProvider())
{
aesAlg.Key = Key;
aesAlg.GenerateIV();
// Create a decrytor to perform the stream transform.
using (var encryptor = aesAlg.CreateEncryptor(aesAlg.Key, aesAlg.IV))
{
// Create the streams used for encryption.
using (var msEncrypt = new MemoryStream())
{
// Write out IV.
msEncrypt.Write(aesAlg.IV, 0, 16);
using (var csEncrypt = new CryptoStream(msEncrypt, encryptor, CryptoStreamMode.Write))
{
using (var swEncrypt = new StreamWriter(csEncrypt))
{
//Write all data to the stream.
swEncrypt.Write(plainText);
}
encrypted = msEncrypt.ToArray();
}
}
}
}
return encrypted;
}
public static byte[] getInitializationVector()
{
AesCryptoServiceProvider myAes = new AesCryptoServiceProvider();
myAes.GenerateIV();
return myAes.IV;
}
public ResponseModel Provision(CompanyModel companyModel, string UserName, string PlatformCode, Command Command, string Email)
{
//Generate IV
AesCryptoServiceProvider cryptoProvider = new AesCryptoServiceProvider();
cryptoProvider.KeySize = 256;
cryptoProvider.GenerateIV();
string IV = Convert.ToBase64String(cryptoProvider.IV);
//Encrypt Model
byte[] data = Encoding.UTF8.GetBytes(Newtonsoft.Json.JsonConvert.SerializeObject(companyModel));
byte[] key = Convert.FromBase64String(provisionerKey);
string hash = Convert.ToBase64String(new HMACSHA512(key).ComputeHash(data));
string data2 = Encrypt(key, Convert.FromBase64String(IV), Newtonsoft.Json.JsonConvert.SerializeObject(companyModel));
//Construct the request model
RequestModel requestModel = new RequestModel
{
UserName = UserName,
PlatformCode = PlatformCode,
Command = Command,
IV = IV,
Data = data2,
Hash = hash
};
var req = new WebClient();
req.BaseAddress = "https://provisioning.datamotion.com:8888";
req.Headers.Clear();
req.Headers.Add("Accept", "application/json");
req.Headers.Add(Headers.Email, Email);
req.Headers.Add(Headers.Iv, IV);
try
{
var request = req.UploadData("https://provisioning.datamotion.com:8888", Encoding.UTF8.GetBytes(JsonConvert.SerializeObject(requestModel)));
ResponseModel response = JsonConvert.DeserializeObject<ResponseModel>(Encoding.UTF8.GetString(request));
response.Data = Decrypt(key, Convert.FromBase64String(response.IV), response.Data);
return response;
}
catch (Exception ex)
{
throw new Exception(ex.Message);
}
}
