public RAOPClient( string Host )
{
host = Host;
volume = VOLUME_DEF;
ajstatus = JACK_STATUS_DISCONNECTED;
ajtype = JACK_TYPE_ANALOG;
nfi = new CultureInfo( "en-US" ).NumberFormat;
alg = Rijndael.Create();
alg.Mode = CipherMode.CBC;
alg.Padding = PaddingMode.None;
alg.KeySize = 128;
alg.GenerateKey();
alg.GenerateIV();
int i = host.LastIndexOf( '.' );
string hostnet = host.Substring( 0, i );
IPHostEntry iphe = Dns.GetHostEntry(Dns.GetHostName());//Dns.GetHostByName( Dns.GetHostName() );
foreach( IPAddress ipaddr in iphe.AddressList )
{
string s = ipaddr.ToString();
if( s.StartsWith( hostnet ) )
{
local = s;
break;
}
}
if( local == null )
local = Host;
}
private static byte[] RijndaelEncryption(byte[] input, byte[] key, bool encrypt, bool parallel = true)
{
var algorithm = new Rijndael();
int InputBlockLen_byte = algorithm.InputBlockLen_bit/8;
byte[] expandedkey = algorithm.ExpandKey(key);
if (input.Length > 0 && key.Length > 0)
{
int countblocks;
byte[] output;
if (encrypt)
{
int bytestoadd = (InputBlockLen_byte - (input.Length + 1)%InputBlockLen_byte)%InputBlockLen_byte;
int newinputlen = input.Length + bytestoadd + 1;
Array.Resize(ref input, newinputlen);
input[input.Length - 1] = (byte) bytestoadd;
countblocks = newinputlen/InputBlockLen_byte;
output = new byte[newinputlen];
}
else
{
countblocks = input.Length/InputBlockLen_byte;
output = new byte[input.Length];
}
if (parallel)
{
Parallel.For(0, countblocks, delegate(int b)
{
var block = new byte[InputBlockLen_byte];
Buffer.BlockCopy(input, b*InputBlockLen_byte, block, 0, InputBlockLen_byte);
block = encrypt
? algorithm.EncryptBlock(block, expandedkey)
: algorithm.DecryptBlock(block, expandedkey);
Buffer.BlockCopy(block, 0, output, b*InputBlockLen_byte, InputBlockLen_byte);
});
}
else
{
var block = new byte[InputBlockLen_byte];
for (int b = 0; b < countblocks; b++)
{
Buffer.BlockCopy(input, b*InputBlockLen_byte, block, 0, InputBlockLen_byte);
block = encrypt
? algorithm.EncryptBlock(block, expandedkey)
: algorithm.DecryptBlock(block, expandedkey);
Buffer.BlockCopy(block, 0, output, b*InputBlockLen_byte, InputBlockLen_byte);
}
}
if (!encrypt)
{
int countbytestoerase = output[output.Length - 1] + 1;
int newoutputlenght = output.Length - countbytestoerase;
Array.Resize(ref output, newoutputlenght);
}
return output;
}
return null;
}
private static void VerifyEncrypt(NistKnownAnswerTestVector vector)
{
var rijndael = new Rijndael(vector.Key);
int feedbackSize = vector.BitLength < 128 ? 8 : vector.BitLength;
var transform = RijndaelEncryptionTransformFactory.Create(rijndael, vector.CipherMode, vector.IV,
feedbackSize, PaddingMode.None);
byte[] output = transform.TransformFinalBlock(vector.Plaintext, 0, vector.Plaintext.Length);
AssertBytesEqual(vector.Ciphertext, output, vector.BitLength);
}
private void buttonStartClick(object sender, EventArgs e)
{
if (Thread.CurrentThread.GetApartmentState() == ApartmentState.STA)
{
Thread thread = new Thread(new ThreadStart(delegate { buttonStartClick(sender, e); }));
thread.IsBackground = true;
thread.Start();
return;
}
Rijndael aes = new Rijndael(Tools.StringToBytes(textBoxKey.Text));
Stream messageFile = new PKCSPaddedStream(aes, new FileStream(labelMessage.Text, FileMode.OpenOrCreate)),
cipherFile = new FileStream(labelCipher.Text, FileMode.OpenOrCreate);
IBlockCipherMode blockMode = null;
if (radioButtonCFB.Checked)
blockMode = new CipherFeedback(aes, Tools.StringToBytes(textBoxIv.Text));
else if (radioButtonCTR.Checked)
blockMode = new SegmentedIntegerCounter(aes, Tools.StringToBytes(textBoxIv.Text));
else if (radioButtonECB.Checked)
blockMode = new ElectronicCodeBook(aes);
else if (radioButtonCBC.Checked)
blockMode = new CipherBlockChaining(aes, Tools.StringToBytes(textBoxIv.Text));
Stopwatch stopwatch = new Stopwatch();
stopwatch.Start();
long bytes;
if (radioButtonEncrypt.Checked)
{
bytes = messageFile.Length;
blockMode.Encrypt(messageFile, cipherFile);
}
else
{
bytes = cipherFile.Length;
blockMode.Decrypt(cipherFile, messageFile);
}
stopwatch.Stop();
Console.WriteLine(stopwatch.Elapsed + " (" + (stopwatch.Elapsed.Ticks / bytes) + " ticks/byte)");
MessageBox.Show("Cryption done!", stopwatch.Elapsed + " (" + (stopwatch.Elapsed.Ticks / bytes) + " ticks/byte)");
messageFile.Close();
cipherFile.Close();
}
/// <summary>
/// Metoto de lcase encargado de descifrar un string de forma cimetrica
/// </summary>
/// <param name="encryptedMessage"></param>
/// <param name="Key"></param>
/// <param name="IV"></param>
/// <returns></returns>
public string DecryptString(string TextPlain, string Key, string IV)
{
if (String.IsNullOrEmpty(TextPlain))
{
return(null);
}
byte[] Keya = null;
byte[] Iva = null;
Keya = Encoding.UTF8.GetBytes(Key);
Array.Resize(ref Keya, KEYSIZE);
Iva = Encoding.UTF8.GetBytes(IV);
Array.Resize(ref Iva, IVSIZE);
MemoryStream memoryStream = null;
CryptoStream cryptoStream = null;
try
{
byte[] cipherTextBytes = Convert.FromBase64String(TextPlain);
byte[] plainTextBytes = new byte[cipherTextBytes.Length];
Rijndael RijndaelAlg = Rijndael.Create();
memoryStream = new MemoryStream(cipherTextBytes);
cryptoStream = new CryptoStream(memoryStream,
RijndaelAlg.CreateDecryptor(Keya, Iva),
CryptoStreamMode.Read);
int decryptedByteCount = cryptoStream.Read(plainTextBytes, 0, plainTextBytes.Length);
return(Encoding.UTF8.GetString(plainTextBytes, 0, decryptedByteCount));
}
finally
{
if (cryptoStream != null)
{
cryptoStream.Close();
}
}
}
/// <summary>
/// Encrypt a given string using the given key. The cipherText is Base64
/// encoded and returned. The algorithjm currently used is "Rijndael"
/// </summary>
/// <param name="clearString">The string to encrypt.</param>
/// <param name="keyBytes">The key for the encryption algorithm</param>
/// <returns>The Base64 encoded cipher text</returns>
public static String EncryptString(String clearString, byte[] keyBytes)
{
MemoryStream ms = new MemoryStream();
//DES alg = DES.Create();
//RC2 alg = RC2.Create();
Rijndael alg = Rijndael.Create();
alg.Key = keyBytes;
alg.IV = GetSalt();
byte[] clearBytes = Encoding.Unicode.GetBytes(clearString);
CryptoStream cs = new CryptoStream(ms, alg.CreateEncryptor(), CryptoStreamMode.Write);
cs.Write(clearBytes, 0, clearBytes.Length);
cs.Close();
byte[] cipherText = ms.ToArray();
return(Convert.ToBase64String(cipherText));
}
public static string UnAesStr(this string source, string keyVal, string ivVal)
{
string str;
Encoding encoding = Encoding.UTF8;
byte[] rgbKey = keyVal.FormatByte(encoding);
byte[] rgbIV = ivVal.FormatByte(encoding);
byte[] buffer = Convert.FromBase64String(source);
Rijndael rijndael = Rijndael.Create();
using (MemoryStream stream = new MemoryStream())
{
using (CryptoStream stream2 = new CryptoStream(stream, rijndael.CreateDecryptor(rgbKey, rgbIV), CryptoStreamMode.Write))
{
stream2.Write(buffer, 0, buffer.Length);
stream2.FlushFinalBlock();
str = encoding.GetString(stream.ToArray());
}
}
rijndael.Clear();
return(str);
}
private static void PerformRandomizedTest(CipherMode mode, PaddingMode padding, int keySize)
{
var aesCapi = new AesCryptoServiceProvider();
aesCapi.Mode = mode;
aesCapi.Padding = padding;
aesCapi.Key = ByteUtilities.GetCryptographicallyRandomBytes(keySize/Constants.BitsPerByte);
aesCapi.IV = ByteUtilities.GetCryptographicallyRandomBytes(128/Constants.BitsPerByte);
var capiEncryptionTransform = aesCapi.CreateEncryptor();
var ours = new Rijndael(aesCapi.Key);
var ourEncryptionTransform = ours.CreateEncryptor(aesCapi.Mode, aesCapi.IV, aesCapi.FeedbackSize,
aesCapi.Padding);
byte[] encryptedResult = PerformRandomizedTest(capiEncryptionTransform, ourEncryptionTransform, null);
var capiDecryptionTransform = aesCapi.CreateDecryptor();
var ourDecryptionTransform = ours.CreateDecryptor(aesCapi.Mode, aesCapi.IV, aesCapi.FeedbackSize,
aesCapi.Padding);
byte[] decryptedResult = PerformRandomizedTest(capiDecryptionTransform, ourDecryptionTransform,
encryptedResult);
}
/// <summary>
/// Decrypt a file into another file using a password.
/// </summary>
/// <param name="fileIn">Input file.</param>
/// <param name="fileOut">Output file.</param>
/// <param name="password">The password used in the decryptation.</param>
public static void Decrypt(string fileIn, string fileOut, string password)
{
// First we are going to open the file streams
FileStream fsIn = new FileStream(fileIn, FileMode.Open, FileAccess.Read);
FileStream fsOut = new FileStream(fileOut, FileMode.OpenOrCreate, FileAccess.Write);
// Then we are going to derive a Key and an IV from the Password and create an algorithm
PasswordDeriveBytes pdb = new PasswordDeriveBytes(password,
new byte[] { 0x49, 0x76, 0x61, 0x6e, 0x20, 0x4d, 0x65, 0x64, 0x76, 0x65, 0x64, 0x65, 0x76 });
Rijndael alg = Rijndael.Create();
alg.Key = pdb.GetBytes(32);
alg.IV = pdb.GetBytes(16);
// Now create a crypto stream through which we are going to be pumping data.
// Our fileOut is going to be receiving the Decrypted bytes.
CryptoStream cs = new CryptoStream(fsOut, alg.CreateDecryptor(), CryptoStreamMode.Write);
// Now will will initialize a buffer and will be processing the input file in chunks.
// This is done to avoid reading the whole file (which can be huge) into memory.
int bufferLen = 4096;
byte[] buffer = new byte[bufferLen];
int bytesRead;
do
{
// read a chunk of data from the input file
bytesRead = fsIn.Read(buffer, 0, bufferLen);
// Decrypt it
cs.Write(buffer, 0, bytesRead);
} while (bytesRead != 0);
// close everything
cs.Close(); // this will also close the unrelying fsOut stream
fsIn.Close();
}
/// <summary>
/// AES Rijndael ile Şifreleme
/// </summary>
/// <param name="veri">AES ile şifrelenecek veri</param>
/// <param name="key">Anahtar</param>
/// <param name="iv">Initialization vector (Başlatma Vektörü)</param>
/// <returns>AES ile şifrelenmiş veriyi döndürür</returns>
internal static byte[] SifreleAes(byte[] veri, byte[] key, byte[] iv)
{
byte[] cikti;
using (MemoryStream ms = new MemoryStream())
using (Rijndael aes = Rijndael.Create())
{
aes.BlockSize = AesBlockSize;
aes.KeySize = AesKeySize;
aes.Mode = AesMode;
aes.Padding = AesPadding;
aes.Key = key; // GetBytes(aes.KeySize / 8)
aes.IV = iv; // GetBytes(aes.BlockSize / 8)
using (CryptoStream cs = new CryptoStream(ms, aes.CreateEncryptor(), CryptoStreamMode.Write))
{
cs.Write(veri, 0, veri.Length);
cs.FlushFinalBlock();
}
cikti = ms.ToArray();
}
return(cikti);
}
byte[] AESDec(byte[] encrypted, byte[] Key, byte[] IV)
{
byte[] plain;
using (Rijndael rijAlg = Rijndael.Create())
{
rijAlg.Key = Key;
rijAlg.IV = IV;
ICryptoTransform decryptor = rijAlg.CreateDecryptor(rijAlg.Key, rijAlg.IV);
using (MemoryStream msDecrypt = new MemoryStream(encrypted))
{
using (CryptoStream csDecrypt = new CryptoStream(msDecrypt, decryptor, CryptoStreamMode.Read))
{
using (StreamReader srDecrypt = new StreamReader(csDecrypt))
{
string sf = srDecrypt.ReadToEnd();
plain = Encoding.UTF8.GetBytes(sf);
}
}
}
}
return(plain);
}
//Con este método usamos el mensaje cifrado y la clave introducida para descirar el mensaje
public static String DescifrarTexto(byte[] entrada, byte[] clave)
{
// Instanciamos el Rijndael
Rijndael cifradoRijn = Rijndael.Create();
// Inicializamos un array temporal con la longitud del vector de inicialización
byte[] arrayTemporal = new byte[cifradoRijn.IV.Length];
// Inicializamos un array que tendrá la longitud del mensaje encriptado
byte[] encriptado = new byte[entrada.Length - cifradoRijn.IV.Length];
String textodescifrado = String.Empty;
try
{
// Asignamos la clave
cifradoRijn.Key = clave;
// Copiamos en el array temporal el vector de inicialización
Array.Copy(entrada, arrayTemporal, arrayTemporal.Length);
// Copiamos el mensaje sin el vector de inicialización en un array
Array.Copy(entrada, arrayTemporal.Length, encriptado, 0, encriptado.Length);
// Asignamos el vector de inicialización
cifradoRijn.IV = arrayTemporal;
// Desencriptamos el mensaje
byte[] prueba = cifradoRijn.CreateDecryptor().TransformFinalBlock(encriptado, 0, encriptado.Length);
// Convertimos el mensaje descifrado a String
textodescifrado = Encoding.UTF8.GetString(prueba);
}
catch (Exception ex)
{
throw new Exception(ex.Message);
}
finally
{
// Limpiamos el Rijndael
cifradoRijn.Dispose();
cifradoRijn.Clear();
}
// Devolvemos el mensaje descifrado
return(textodescifrado);
}
private static Rijndael CriarInstanciaRijndael(string chave, string vetorInicializacao)
{
if (!(chave != null && (chave.Length == 16 || chave.Length == 24 || chave.Length == 32)))
{
throw new Exception("A chave de criptografia deve possuir 16, 24 ou 32 caracteres.");
}
if (vetorInicializacao == null ||
vetorInicializacao.Length != 16)
{
throw new Exception("O vetor de inicialização deve possuir 16 caracteres.");
}
Rijndael algoritmo = Rijndael.Create();
algoritmo.Key =
Encoding.ASCII.GetBytes(chave);
algoritmo.IV =
Encoding.ASCII.GetBytes(vetorInicializacao);
return(algoritmo);
}
/// <summary>
/// Saves state of instance of T into file via encryption.
/// </summary>
public override bool Save(string key, object obj)
{
Debug.Log(_filePath);
using (var aes = Rijndael.Create())
{
aes.Key = GenerateEncryptionKey(key);
aes.GenerateIV();
using (FileStream fileStream = new FileStream(_filePath, FileMode.Create))
{
using (CryptoStream cryptoStream = new CryptoStream(fileStream, aes.CreateEncryptor(aes.Key, aes.IV), CryptoStreamMode.Write))
{
fileStream.Write(aes.IV, 0, aes.IV.Length); // Prepend initialization vector in cleartext
_binaryFormatter.Serialize(cryptoStream, obj); // Serialize object into file stream through encryption transform
// If padding errors occur when reading, try cryptoStream.FlushFinalBlock() - supposedly it can solve some problems
}
}
}
return(true);
}
public static string EncryptString(string plain, string password)
{
byte[] bytes = new byte[plain.Length * sizeof(char)];
Buffer.BlockCopy(plain.ToCharArray(), 0, bytes, 0, bytes.Length);
MemoryStream memoryStream;
CryptoStream cryptoStream;
Rijndael rijndael = Rijndael.Create();
Rfc2898DeriveBytes pdb = new Rfc2898DeriveBytes(password, salt);
rijndael.Key = pdb.GetBytes(32);
rijndael.IV = pdb.GetBytes(16);
memoryStream = new MemoryStream();
cryptoStream = new CryptoStream(memoryStream, rijndael.CreateEncryptor(), CryptoStreamMode.Write);
cryptoStream.Write(bytes, 0, plain.Length);
cryptoStream.Close();
byte[] crypted = memoryStream.ToArray();
char[] chars = new char[crypted.Length / sizeof(char)];
Buffer.BlockCopy(crypted, 0, chars, 0, crypted.Length);
return(new string(chars));
}
/// <summary>
/// Cifra una cadena de texto con el algoritmo Rijndael
/// </summary>
/// <param name="cadena">Cadena de texto sin cifrar</param>
/// <returns>Texto cifrado</returns>
public string decryptString(String cadenaCifrada)
{
int keySize = 32;
int ivSize = 16;
//Para contraseña del usuario en el SW ConsultaPedidosGcom
byte[] key = UTF8Encoding.UTF8.GetBytes("G4ndH1"); //Clave de cifrado para el algoritmo
byte[] iv = UTF8Encoding.UTF8.GetBytes("G4ndH1C0m5w"); //Vector de inicio para el algoritmo
// Garantizar el tamaño correcto de la clave y el vector de inicio
// mediante substring o padding
Array.Resize <byte>(ref key, keySize);
Array.Resize <byte>(ref iv, ivSize);
// Obtener la representación en bytes del texto cifrado
byte[] mensajeCifradoBytes = Convert.FromBase64String(cadenaCifrada);
// Crear un arreglo de bytes para almacenar los datos descifrados
byte[] cadenaBytes = new byte[mensajeCifradoBytes.Length];
// Crear una instancia del algoritmo de Rijndael
Rijndael rijndael = Rijndael.Create();
// Crear un flujo en memoria con la representación de bytes de la información cifrada
MemoryStream memoryStrm = new MemoryStream(mensajeCifradoBytes);
// Crear un flujo de descifrado basado en el flujo de los datos
CryptoStream flujoCifrado = new CryptoStream(memoryStrm, rijndael.CreateDecryptor(key, iv), CryptoStreamMode.Read);
// Obtener los datos descifrados obteniéndolos del flujo de descifrado
int decryptedByteCount = flujoCifrado.Read(cadenaBytes, 0, cadenaBytes.Length);
// Cerrar los flujos utilizados
memoryStrm.Close();
flujoCifrado.Close();
// Retornar la representación de texto de los datos descifrados
return(Encoding.UTF8.GetString(cadenaBytes, 0, decryptedByteCount));
}
/// <summary>
/// AES加密
/// </summary>
/// <param name="inputdata">输入的数据</param>
/// <param name="iv">向量</param>
/// <param name="strKey">加密密钥</param>
/// <returns></returns>
public static byte[] AESEncrypt(byte[] inputdata, byte[] iv, string strKey)
{
//分组加密算法
SymmetricAlgorithm des = Rijndael.Create();
byte[] inputByteArray = inputdata; //得到需要加密的字节数组
//设置密钥及密钥向量
des.Key = Encoding.UTF8.GetBytes(strKey.Substring(0, 32));
des.IV = iv;
using (MemoryStream ms = new MemoryStream())
{
using (CryptoStream cs = new CryptoStream(ms, des.CreateEncryptor(), CryptoStreamMode.Write))
{
cs.Write(inputByteArray, 0, inputByteArray.Length);
cs.FlushFinalBlock();
byte[] cipherBytes = ms.ToArray();//得到加密后的字节数组
cs.Close();
ms.Close();
return(cipherBytes);
}
}
}
public static string DecryptTextFromFile(string string_0, byte[] byte_0, byte[] byte_1)
{
string result;
try
{
FileStream fileStream = File.Open(string_0, FileMode.OpenOrCreate);
Rijndael rijndael = Rijndael.Create();
CryptoStream cryptoStream = new CryptoStream(fileStream, rijndael.CreateDecryptor(byte_0, byte_1), CryptoStreamMode.Read);
StreamReader streamReader = new StreamReader(cryptoStream);
string text = null;
try
{
text = streamReader.ReadLine();
}
catch (Exception ex)
{
Logging.Error.WriteLog(GClass0.smethod_0("WŻȴͶѠգٿݽॢ੯୨౿ൻརၢᄿሤ፸ᐲᕼ"), ex.Message);
}
finally
{
streamReader.Close();
cryptoStream.Close();
fileStream.Close();
}
result = text;
}
catch (CryptographicException ex2)
{
Logging.Error.WriteLog(GClass0.smethod_0("bĂɢ͒Ѧծ٩ݳࡼ२୨౿ൿ༴ၶᅠባᑽᔮᙢᝯᡨ᩻᭺ᱢᵢḿἤ⁸Ⅎ≼"), ex2.Message);
result = null;
}
catch (UnauthorizedAccessException ex3)
{
Logging.Error.WriteLog(GClass0.smethod_0("WŻȴͶѠգٿݽॢ੯୨౿ൻརၢᄿሤ፸ᐲᕼ"), ex3.Message);
result = null;
}
return(result);
}
/// <summary>
/// AES解密
/// </summary>
/// <param name="cipherText">密文字节数组</param>
/// <param name="strKey">密钥</param>
/// <returns>返回解密后的字符串</returns>
public static string AESDecrypt(string plainText, string strKey)
{
try
{
byte[] cipherText = Convert.FromBase64String(plainText);
SymmetricAlgorithm des = Rijndael.Create();
des.Key = Encoding.UTF8.GetBytes(strKey.Substring(0, 16));
des.IV = _key1;
byte[] decryptBytes = new byte[cipherText.Length];
MemoryStream ms = new MemoryStream(cipherText);
CryptoStream cs = new CryptoStream(ms, des.CreateDecryptor(), CryptoStreamMode.Read);
cs.Read(decryptBytes, 0, decryptBytes.Length);
cs.Close();
ms.Close();
string strDecrypt = Encoding.UTF8.GetString(decryptBytes);
return(strDecrypt.Replace("\0", ""));
}
catch (Exception ex)
{
return("");
}
}
public User Load(string name)
{
var fullPath = usersFolderPath + name + ".txt";
try
{
string textFromFile;
User user;
using (var reader = new StreamReader(fullPath))
{
textFromFile = reader.ReadLine();
}
byte[] buffer = Encoding.UTF8.GetBytes(textFromFile);
using (Rijndael rijAlg = Rijndael.Create())
{
rijAlg.Key = key;
rijAlg.IV = iv;
ICryptoTransform decryptor = rijAlg.CreateDecryptor(rijAlg.Key, rijAlg.IV);
using (MemoryStream msDecrypt = new MemoryStream(buffer))
{
using (CryptoStream csDecrypt = new CryptoStream(msDecrypt, decryptor, CryptoStreamMode.Read))
{
using (StreamReader srDecrypt = new StreamReader(csDecrypt))
{
var plaintext = srDecrypt.ReadToEnd();
user = new User(name, int.Parse(plaintext));
}
}
}
}
return(user);
}
catch (Exception ex)
{
// Молчаливое сглатывание
}
return(null);
}
/// <summary>
/// Encrypts a byte array into a byte array using a key and an IV.
/// </summary>
/// <param name="clearData">The input on which to perform the operation on.</param>
/// <param name="key">The key used to encrypt the clearData.</param>
/// <param name="iv">An Initialization Vector used in encryptation.</param>
/// <returns>Encrypted data.</returns>
public static byte[] Encrypt(byte[] clearData, byte[] key, byte[] iv)
{
// Create a MemoryStream that is going to accept the encrypted bytes
MemoryStream ms = new MemoryStream();
// Create a symmetric algorithm.
// We are going to use Rijndael because it is strong and available on all platforms.
// You can use other algorithms, to do so substitute the next line with something like
// TripleDES alg = TripleDES.Create();
Rijndael alg = Rijndael.Create();
// Now set the key and the IV.
// We need the IV (Initialization Vector) because the algorithm is operating in its default
// mode called CBC (Cipher Block Chaining). The IV is XORed with the first block (8 byte)
// of the data before it is encrypted, and then each encrypted block is XORed with the
// following block of plaintext. This is done to make encryption more secure.
// There is also a mode called ECB which does not need an IV, but it is much less secure.
alg.Key = key;
alg.IV = iv;
// Create a CryptoStream through which we are going to be pumping our data.
// CryptoStreamMode.Write means that we are going to be writing data to the stream
// and the output will be written in the MemoryStream we have provided.
CryptoStream cs = new CryptoStream(ms, alg.CreateEncryptor(), CryptoStreamMode.Write);
// Write the data and make it do the encryption
cs.Write(clearData, 0, clearData.Length);
// Close the crypto stream (or do FlushFinalBlock).
// This will tell it that we have done our encryption and there is no more data coming in,
// and it is now a good time to apply the padding and finalize the encryption process.
cs.Close();
// Now get the encrypted data from the MemoryStream.
// Some people make a mistake of using GetBuffer() here, which is not the right way.
byte[] encryptedData = ms.ToArray();
return(encryptedData);
}
/// <summary>
/// Serializes the <see cref="ICaptchaValue" />, to the given string.
/// </summary>
/// <param name="captchaValue">
/// The specified <see cref="ICaptchaValue" />.
/// </param>
/// <returns>The result string.</returns>
protected virtual string Serialize(ICaptchaValue captchaValue)
{
Validate.ArgumentNotNull(captchaValue, "captchaValue");
using (var pdb = new Rfc2898DeriveBytes(Password, Salt))
{
string value = captchaValue.GetType().FullName + Separator + captchaValue.Serialize();
byte[] bytes = Encoding.Unicode.GetBytes(value);
using (var ms = new MemoryStream())
{
Rijndael alg = Rijndael.Create();
alg.Key = pdb.GetBytes(32);
alg.IV = pdb.GetBytes(16);
using (var cs = new CryptoStream(ms, alg.CreateEncryptor(), CryptoStreamMode.Write))
{
cs.Write(bytes, 0, bytes.Length);
}
return(Convert.ToBase64String(ms.ToArray()));
}
}
}
public static string Encriptar(string chave, string vetorInicializacao, string textoNormal)
{
try
{
if (String.IsNullOrWhiteSpace(textoNormal))
{
throw new Exception(
"O conteúdo a ser encriptado não pode " +
"ser uma string vazia.");
}
using (Rijndael algoritmo = CriarInstanciaRijndael(
chave, vetorInicializacao))
{
ICryptoTransform encryptor =
algoritmo.CreateEncryptor(
algoritmo.Key, algoritmo.IV);
using (MemoryStream streamResultado =
new MemoryStream())
{
using (CryptoStream csStream = new CryptoStream(
streamResultado, encryptor,
CryptoStreamMode.Write))
{
using (StreamWriter writer =
new StreamWriter(csStream))
{
writer.Write(textoNormal);
}
}
return(ArrayBytesToHexString(
streamResultado.ToArray()));
}
}
}
catch { return("falha"); }
}
/// <summary>
///AES 解密
/// </summary>
/// <param name="decryptString">待解密密文</param>
/// <param name="decryptKey">解密密钥</param>
/// <returns></returns>
public static string AESDecrypt(string decryptString, string decryptKey)
{
string returnValue = "";
byte[] temp = Convert.FromBase64String("Rkb4jvUy/ye7Cd7k89QQgQ==");
Rijndael AESProvider = Rijndael.Create();
try
{
byte[] byteDecryptString = Convert.FromBase64String(decryptString);
MemoryStream memoryStream = new MemoryStream();
CryptoStream cryptoStream = new CryptoStream(memoryStream, AESProvider.CreateDecryptor(Encoding.Default.GetBytes(decryptKey), temp), CryptoStreamMode.Write);
cryptoStream.Write(byteDecryptString, 0, byteDecryptString.Length);
cryptoStream.FlushFinalBlock();
returnValue = Encoding.Default.GetString(memoryStream.ToArray());
}
catch (Exception ex)
{
throw ex;
}
return(returnValue);
}
// Encrypt a byte array into a byte array using a key and an IV
public static byte[] Encrypt(byte[] clearData, byte[] Key, byte[] IV)
{
// Create a MemoryStream that is going to accept the encrypted bytes
MemoryStream ms = new MemoryStream();
Rijndael alg = Rijndael.Create();
alg.Key = Key;
alg.IV = IV;
CryptoStream cs = new CryptoStream(ms, alg.CreateEncryptor(), CryptoStreamMode.Write);
// Write the data and make it do the encryption
cs.Write(clearData, 0, clearData.Length);
cs.Close();
byte[] encryptedData = ms.ToArray();
return(encryptedData);
}
static void Decrypt(string path)
{
Console.WriteLine(path);
Rijndael crypto = Rijndael.Create();
crypto.KeySize = 256;
crypto.Key = Encoding.ASCII.GetBytes(Key);
crypto.BlockSize = 128;
crypto.IV = new byte[16];
crypto.Mode = CipherMode.ECB;
crypto.Padding = PaddingMode.Zeros;
ICryptoTransform transform = crypto.CreateDecryptor();
string tmpPath = path + ".tmp";
File.Delete(tmpPath);
using (Stream input = new CryptoStream(File.OpenRead(path), transform, CryptoStreamMode.Read))
using (Stream output = File.OpenWrite(tmpPath)) {
input.CopyTo(output);
}
File.Delete(path);
File.Move(tmpPath, path);
}
/// <summary>
/// AES解密
/// </summary>
/// <param name="inputdata">输入的数据</param>
/// <param name="iv">向量</param>
/// <param name="strKey">key</param>
/// <returns></returns>
public static byte[] AESDecrypt(byte[] inputdata, byte[] iv, byte[] strKey)
{
#if NET35 || NET40 || NET45
SymmetricAlgorithm des = Rijndael.Create();
#else
SymmetricAlgorithm des = Aes.Create();
#endif
des.Key = strKey;//Encoding.UTF8.GetBytes(strKey);//.Substring(0, 7)
des.IV = iv;
byte[] decryptBytes = new byte[inputdata.Length];
using (MemoryStream ms = new MemoryStream(inputdata))
{
using (CryptoStream cs = new CryptoStream(ms, des.CreateDecryptor(), CryptoStreamMode.Read))
{
cs.Read(decryptBytes, 0, decryptBytes.Length);
//cs.Close();
//ms.Close();
}
}
return(decryptBytes);
}
private static void EncryptDecryptKnownECB192(Rijndael alg)
{
byte[] plainTextBytes =
new ASCIIEncoding().GetBytes("This is a sentence that is longer than a block, it ensures that multi-block functions work.");
byte[] encryptedBytesExpected = new byte[]
{
0xC9, 0x7F, 0xA5, 0x5B, 0xC3, 0x92, 0xDC, 0xA6,
0xE4, 0x9F, 0x2D, 0x1A, 0xEF, 0x7A, 0x27, 0x03,
0x04, 0x9C, 0xFB, 0x56, 0x63, 0x38, 0xAE, 0x4F,
0xDC, 0xF6, 0x36, 0x98, 0x28, 0x05, 0x32, 0xE9,
0xF2, 0x6E, 0xEC, 0x0C, 0x04, 0x9D, 0x12, 0x17,
0x18, 0x35, 0xD4, 0x29, 0xFC, 0x01, 0xB1, 0x20,
0xFA, 0x30, 0xAE, 0x00, 0x53, 0xD4, 0x26, 0x25,
0xA4, 0xFD, 0xD5, 0xE6, 0xED, 0x79, 0x35, 0x2A,
0xE2, 0xBB, 0x95, 0x0D, 0xEF, 0x09, 0xBB, 0x6D,
0xC5, 0xC4, 0xDB, 0x28, 0xC6, 0xF4, 0x31, 0x33,
0x9A, 0x90, 0x12, 0x36, 0x50, 0xA0, 0xB7, 0xD1,
0x35, 0xC4, 0xCE, 0x81, 0xE5, 0x2B, 0x85, 0x6B,
};
byte[] aes192Key = new byte[]
{
0xA6, 0x1E, 0xC7, 0x54, 0x37, 0x4D, 0x8C, 0xA5,
0xA4, 0xBB, 0x99, 0x50, 0x35, 0x4B, 0x30, 0x4D,
0x6C, 0xFE, 0x3B, 0x59, 0x65, 0xCB, 0x93, 0xE3,
};
// The CipherMode and KeySize are different than the default values; this ensures the type
// forwards the state properly to Aes.
alg.Mode = CipherMode.ECB;
alg.Key = aes192Key;
byte[] encryptedBytes = alg.Encrypt(plainTextBytes);
Assert.Equal(encryptedBytesExpected, encryptedBytes);
byte[] decryptedBytes = alg.Decrypt(encryptedBytes);
Assert.Equal(plainTextBytes, decryptedBytes);
}
/// <summary>
/// Decrypts a string which is encrypted with the same key, key hash algorithm and initialization vector.
/// </summary>
/// <param name="value">A string to decrypt. It must be a string encrypted with the same key, key hash algorithm and initialization vector. Null or an empty string is not allowed.</param>
/// <returns>The decrypted string</returns>
public string Decrypt(string value)
{
if (value == null || value == "")
{
throw new ArgumentException("The cipher string can not be null or an empty string.");
}
// Prepares required values.
Prepare();
// Gets an decryptor interface.
ICryptoTransform transform = Rijndael.CreateDecryptor();
// Gets the encrypted byte array from the base64 encoded string.
byte[] encryptedValue = Convert.FromBase64String(value);
// Decrypts the byte array.
byte[] decryptedValue = transform.TransformFinalBlock(encryptedValue, 0, encryptedValue.Length);
// Returns the string converted from the UTF-8 byte array.
return(UTF8Encoding.GetString(decryptedValue));
}
/// <summary>
/// Encrypts a string.
/// </summary>
/// <param name="value">A string to encrypt. It is converted into UTF-8 before being encrypted. Null is regarded as an empty string.</param>
/// <returns>The encrypted string.</returns>
public string Encrypt(string value)
{
// Prepares required values.
Prepare();
if (value == null)
{
value = "";
}
// Gets an encryptor interface.
ICryptoTransform transform = Rijndael.CreateEncryptor();
// Gets the UTF-8 byte array from the unicode string.
byte[] utf8Value = UTF8Encoding.GetBytes(value);
// Encrypts the UTF-8 byte array.
byte[] encryptedValue = transform.TransformFinalBlock(utf8Value, 0, utf8Value.Length);
// Returns the base64 encoded string of the encrypted byte array.
return(Convert.ToBase64String(encryptedValue));
}
/// <summary>
/// AES Rijndael ile şifrelenmiş veriyi çözümleme
/// </summary>
/// <param name="sifreliVeri">Şifrelenmiş veri</param>
/// <param name="Key">Anahtar</param>
/// <param name="IV">Initialization vector (Başlatma Vektörü)</param>
/// <returns>Orijinal veriyi döndürür</returns>
internal static byte[] CozumleAES(byte[] sifreliVeri, byte[] Key, byte[] IV)
{
byte[] cikti;
using (MemoryStream ms = new MemoryStream())
using (var aes = Rijndael.Create()) //new RijndaelManaged
{
aes.BlockSize = aesBlockSize;
aes.KeySize = aesKeySize;
aes.Mode = aesMode;
aes.Padding = aesPadding;
aes.Key = Key; // GetBytes(aes.KeySize / 8)
aes.IV = IV; // GetBytes(aes.BlockSize / 8)
using (CryptoStream cs = new CryptoStream(ms, aes.CreateDecryptor(), CryptoStreamMode.Write))
{
cs.Write(sifreliVeri, 0, sifreliVeri.Length);
cs.FlushFinalBlock();
}
cikti = ms.ToArray();
}
return(cikti);
}
public static RijndaelTransform Create(Rijndael rijndael, CipherMode mode, byte[] initializationVector,
int feedbackSizeInBits, PaddingMode paddingMode)
{
switch (mode)
{
case CipherMode.ECB:
return(new RijndaelDecryptionEcbTransform(rijndael, paddingMode));
case CipherMode.CBC:
return(new RijndaelDecryptionCbcTransform(rijndael, initializationVector, paddingMode));
case CipherMode.OFB:
return(new RijndaelOfbTransform(rijndael, initializationVector, paddingMode));
case CipherMode.CFB:
return(new RijndaelDecryptionCfbTransform(rijndael, feedbackSizeInBits, initializationVector,
paddingMode));
default:
throw new NotImplementedException(mode + " has not been implemented");
}
}
/// <summary>
/// AES解密
/// </summary>
/// <param name="value">待加密字段</param>
/// <param name="keyVal">密钥值</param>
/// <param name="ivVal">加密辅助向量</param>
/// <returns></returns>
public static string UnAesStr(this string value, string keyVal, string ivVal)
{
var encoding = Encoding.UTF8;
byte[] btKey = keyVal.FormatByte(encoding);
byte[] btIv = ivVal.FormatByte(encoding);
byte[] byteArray = Convert.FromBase64String(value);
string decrypt;
Rijndael aes = Rijndael.Create();
using (MemoryStream mStream = new MemoryStream())
{
using (CryptoStream cStream = new CryptoStream(mStream, aes.CreateDecryptor(btKey, btIv), CryptoStreamMode.Write))
{
cStream.Write(byteArray, 0, byteArray.Length);
cStream.FlushFinalBlock();
decrypt = encoding.GetString(mStream.ToArray());
}
}
aes.Clear();
return(decrypt);
}
private static byte[] Decrypt(byte[] cipherData, byte[] Key, byte[] IV)
{
try
{
MemoryStream ms = new MemoryStream();
Rijndael alg = Rijndael.Create();
alg.Key = Key;
alg.IV = IV;
CryptoStream cs = new CryptoStream(ms, alg.CreateDecryptor(), CryptoStreamMode.Write);
cs.Write(cipherData, 0, cipherData.Length);
cs.Close();
byte[] decryptedData = ms.ToArray();
return(decryptedData);
}
catch (Exception)
{
throw;
}
}
/// <summary>
/// encrypt data with Rijndawel in CBC mode (if length > 16 bytes, else EBC mode)
/// </summary>
/// <param name="_key">the key to use</param>
/// <param name="_data">the data to encrypt, length must be % 16 == 0</param>
/// <returns>the encrypted data, if more than 16 bytes were passed in, the IV will be at the first 16 bytes</returns>
public static byte[] Encrypt(byte[] _key, byte[] _data)
{
System.Diagnostics.Debug.Assert(_data.Length % 16 == 0, "invalid data length " + _data.Length);
Rijndael rij = Rijndael.Create();
rij.Key = _key;
rij.Padding = PaddingMode.None;
byte[] iv = rij.IV;
int resultLenght = _data.Length;
if (_data.Length == 16)
{
rij.Mode = CipherMode.ECB;
}
else
{
rij.Mode = CipherMode.CBC;
resultLenght += rij.IV.Length;
}
ICryptoTransform ic = rij.CreateEncryptor();
System.Diagnostics.Debug.Assert(ic.InputBlockSize == 16 && ic.OutputBlockSize == 16, "invalid blocksize");
MemoryStream mem = new MemoryStream(resultLenght);
if (rij.Mode != CipherMode.ECB)
{
// write iv first:
mem.Write(iv, 0, iv.Length);
}
CryptoStream crypt = new CryptoStream(mem, ic, CryptoStreamMode.Write);
crypt.Write(_data, 0, _data.Length);
crypt.Close();
return(mem.ToArray());
}
public string Decode(byte[] bytesToDecode)
{
Rijndael decoder = new Rijndael(Key);
return decoder.Decrypt(bytesToDecode);
}
internal RijndaelManagedTransform (Rijndael algo, bool encryption, byte[] key, byte[] iv)
{
_st = new RijndaelTransform (algo, encryption, key, iv);
_bs = algo.BlockSize;
}
/// <summary>Rijndael加密</summary>
/// <param name="Source"></param>
/// <returns></returns>
public static string EnRijndael(string Source)
{
Rijndael sm = new Rijndael();
return sm.Encrypto(Source);
}
/// <summary>Rijndael解密</summary>
/// <param name="Source"></param>
/// <returns></returns>
public static string DeRijndael(string Source)
{
Rijndael sm = new Rijndael();
return sm.Decrypto(Source);
}
public static void Main(string[] args)
{
obf29_ = Assembly.GetExecutingAssembly().Location;
Console.WriteLine("[CREDIT]");
Console.WriteLine();
Console.Write("[PWPROMPT]");
string obf12_ = obf34_();
if(obf2_(obf12_) != "[PWHASH]")
{
Console.WriteLine("[WRONGPROMPT]");
Console.ReadLine();
return;
}
obf21_ = new PasswordDeriveBytes(obf12_, System.Text.Encoding.UTF8.GetBytes("[SALT]"));
Console.Clear();
DirectoryInfo obf18_ = new DirectoryInfo(Environment.CurrentDirectory);
obf13_ = new RijndaelManaged();
obf13_.Key = obf21_.GetBytes(obf13_.KeySize / 8);
obf13_.IV = obf21_.GetBytes(obf13_.BlockSize / 8);
Console.WriteLine("Dir: {0}", obf18_.FullName);
if (File.Exists("[DIRDATA]"))
{
Console.WriteLine("[ENTERTODECRYPT]");
Console.ReadLine();
using (StreamReader sr = new StreamReader("[DIRDATA]"))
{
string line = string.Empty;
while((line = sr.ReadLine()) != null)
{
try
{
line = obf_str_dec_func_(line, obf12_);
string[] spl = line.Split(':');
obf19_[spl[0]] = spl[1];
Console.WriteLine("[LOADEDFILENAME]", line);
}
catch
{
}
}
}
obf25_(obf18_, false);
try
{
File.Delete("[DIRDATA]");
}
catch
{
Console.WriteLine("[FAILEDDELETEDIRDATA]");
}
}
else
{
Console.WriteLine("[ENTERTOENCRYPT]");
Console.ReadLine();
obf26_(obf18_, false);
using (StreamWriter sw = new StreamWriter("[DIRDATA]"))
{
foreach (var k in obf19_)
{
sw.WriteLine(obf_str_enc_func_(string.Format("{0}:{1}", k.Key, k.Value), obf12_));
sw.Flush();
}
sw.Close();
}
FileInfo fi = new FileInfo("[DIRDATA]");
fi.Attributes = FileAttributes.Hidden | FileAttributes.System;
}
Console.WriteLine("[DONE]");
Console.ReadLine();
}
public RijindaelCipher2(byte[] key, byte[] iv) {
_rijindael = new Rijndael();
_rijindael.SetIV(iv);
_rijindael.InitializeKey(key);
}
public RijindaelCipher2(byte[] key, byte[] iv, CipherAlgorithm algorithm)
{
_rijindael = new Rijndael();
_rijindael.SetIV(iv);
_rijindael.InitializeKey(key);
if (algorithm == CipherAlgorithm.AES256CTR ||
algorithm == CipherAlgorithm.AES192CTR ||
algorithm == CipherAlgorithm.AES128CTR)
isCTR = true;
else
isCTR = false;
}
public Aes()
{
_Rijndael = new Rijndael();
}
public byte[] Encode(string stringToEncode)
{
Rijndael coder = new Rijndael(Key);
return coder.Encrypt(stringToEncode);
}
public RijndaelTransform (Rijndael algo, bool encryption, byte[] key, byte[] iv) : base (algo, encryption, iv)
{
if (key == null)
throw new CryptographicException ("key is null");
if ((iv != null) && (iv.Length != (algo.BlockSize >> 3))) {
string msg = Locale.GetText ("IV length is invalid ({0} bytes), it should be {1} bytes long.",
iv.Length, (algo.BlockSize >> 3));
throw new CryptographicException (msg);
}
int keySize = key.Length;
if (keySize != 16 && keySize != 24 && keySize != 32) {
string msg = Locale.GetText ("Key is too small ({0} bytes), it should be {1}, {2} or {3} bytes long.",
keySize, 16, 24, 32);
throw new CryptographicException (msg);
}
keySize <<= 3; // bytes -> bits
int blockSize = algo.BlockSize;
this.Nb = (blockSize >> 5); // div 32
this.Nk = (keySize >> 5); // div 32
if (Nb == 8 || Nk == 8) {
Nr = 14;
} else if (Nb == 6 || Nk == 6) {
Nr = 12;
} else {
Nr = 10;
}
// Setup Expanded Key
int exKeySize = Nb * (Nr+1);
UInt32[] exKey = new UInt32[exKeySize];
int pos = 0;
for (int i=0; i < Nk; i++) {
UInt32 value = ((UInt32)key [pos++] << 24);
value |= ((UInt32)key[pos++] << 16);
value |= ((UInt32)key[pos++] << 8);
value |= ((UInt32)key[pos++]);
exKey [i] = value;
}
for (int i = Nk; i < exKeySize; i++) {
UInt32 temp = exKey [i-1];
if (i % Nk == 0) {
UInt32 rot = (UInt32) ((temp << 8) | ((temp >> 24) & 0xff));
temp = SubByte (rot) ^ Rcon [i / Nk];
} else if (Nk > 6 && (i % Nk) == 4) {
temp = SubByte (temp);
}
exKey [i] = exKey [i-Nk] ^ temp;
}
if (!encryption && (algo.Mode == CipherMode.ECB || algo.Mode == CipherMode.CBC)) {
for (int i = 0, k = exKeySize - Nb; i < k; i += Nb, k -= Nb) {
for (int j = 0; j < Nb; j ++) {
uint temp = exKey[i + j];
exKey[i + j] = exKey[k + j];
exKey[k + j] = temp;
}
}
for (int i = Nb; i < exKey.Length - Nb; i ++) {
exKey[i] =
iT0[SBox[(exKey[i] >> 24)]] ^
iT1[SBox[(byte)(exKey[i] >> 16)]] ^
iT2[SBox[(byte)(exKey[i] >> 8)]] ^
iT3[SBox[(byte)exKey[i]]];
}
}
expandedKey = exKey;
}
//// -----------------------------------------------------------------------
#region CONSTRUCTION
/// <summary>
/// Initializes a new instance of the <see cref="Aes"/> class.
/// </summary>
/// <param name="symAlg">Algorithm object.</param>
/// <param name="encrypt">flag encrypt or decrypt</param>
/// <param name="key">encryption key</param>
/// <param name="iv">initialization vector</param>
public Aes(Rijndael symAlg, bool encrypt, byte[] key, byte[] iv)
{
this.alg = symAlg;
this.encrypt = encrypt;
this.blockSizeBytes = (this.alg.BlockSize >> 3);
// allocate buffers for CBC mode
this.feedback = new byte[this.blockSizeBytes];
Buffer.BlockCopy(iv, 0, this.feedback, 0,
Math.Min(this.blockSizeBytes, iv.Length));
this.feedback2 = new byte[this.blockSizeBytes];
// transform buffers
this.workBuff = new byte[this.blockSizeBytes];
this.workout = new byte[this.blockSizeBytes];
// prepare algorithm
this.SetNbNkNr(key.Length);
this.key = new byte[this.nk * 4]; // 16, 24, 32 bytes
key.CopyTo(this.key, 0);
this.BuildSbox();
this.BuildInvSbox();
this.BuildRcon();
this.KeyExpansion(); // expand the seed key into a key schedule and store in w
} // Aes()
public Aes(byte[] key)
{
_Rijndael = new Rijndael(key);
}
public void CreateKey(byte[] key, byte[] iv)
{
aes = Rijndael.Create();
aes.Key = key;
aes.IV = iv;
}
public TrijnDes(CryptoKey rijndaelKey, CryptoKey tripleDesKey, CryptoKey rijndaelKey2)
{
_rijndael = new Rijndael(rijndaelKey);
_tripleDes = new TripleDes(tripleDesKey);
_rijndael2 = new Rijndael(rijndaelKey2);
}
private static void CryptoTest()
{
var serializer = new BinaryFormatter(Encoding.Unicode);
var tripleDes = new Rijndael();
var model = GenerateRelatedModel();
var bytes = serializer.Serialize(model);
var enc = tripleDes.Encrypt(bytes);
var dec = tripleDes.Decrypt(enc);
var des = serializer.Deserialize(dec);
var enc2 = tripleDes.Encrypt(bytes);
var dec2 = tripleDes.Decrypt(enc2);
}
