internal void ProcessEncryption(crypto.Aes cipher, CommandLine commandLine)
{
var key = new Rfc2898DeriveBytes(commandLine.Password, commandLine.KeySaltLength, commandLine.KeyIterations);
cipher.GenerateIV();
cipher.Key = key.GetBytes(cipher.KeySize / 8);
Stream inputStream = CreateInputStream(commandLine);
Stream outputStream = CreateOutputStream(commandLine);
// 2 bytes of version
outputStream.Write(Constants.FormatVersionBytes, 0, Constants.FormatVersionBytes.Length);
// stores 16 bytes of IV
outputStream.Write(cipher.IV, 0, cipher.IV.Length);
// stores 2 bytes of salt size (in network order)
short saltLength = IPAddress.HostToNetworkOrder((short)key.Salt.Length);
byte[] saltLengthBytes = BitConverter.GetBytes(saltLength);
outputStream.Write(saltLengthBytes, 0, saltLengthBytes.Length);
// stores n bytes of salt
outputStream.Write(key.Salt, 0, key.Salt.Length);
using (ICryptoTransform encryptor = cipher.CreateEncryptor())
{
using (Stream cryptoStream = new CryptoStream(outputStream, encryptor, CryptoStreamMode.Write))
inputStream.CopyTo(cryptoStream);
}
}
public AES(byte[] key)
{
rsa = new AesManaged();
rsa.GenerateKey();
rsa.GenerateIV();
_decoder = rsa.CreateDecryptor();
_encoder = rsa.CreateEncryptor();
}
public AesCrypt()
{
aes = Aes.Create();
aes.Mode = CipherMode.CBC;
aes.GenerateIV();
aes.GenerateKey();
aes.Padding = PaddingMode.PKCS7;
}
public AesExtensionsTest()
{
aes = System.Security.Cryptography.Aes.Create();
aes.Mode = CipherMode.ECB;
aes.Padding = PaddingMode.PKCS7;
aes.BlockSize = 128;
aes.GenerateKey(8);
aes.GenerateIV(8);
}
public SimpleAes(byte[] key)
{
aes = Aes.Create();
aes.GenerateIV();
aes.Key = key;
encryptor = aes.CreateEncryptor(key, aes.IV);
decryptor = aes.CreateDecryptor(key, aes.IV);
}
public override void GenerateIV() => _impl.GenerateIV();
private void SetResponseVerifier(Response r, Aes aes)
{
aes.GenerateIV();
r.Nonce = encode64(aes.IV);
r.Verifier = CryptoTransform(r.Nonce, false, true, aes, CMode.ENCRYPT);
}
public static void WriteMessageStream(MemoryStream outStream, Message outMessage, string sessionKey, Aes aes, bool encrypt)
{
outMessage.ReplaceControlValue(Message.TimestampControlValueName, DateTime.Now.ToUniversalTime().ToString());
outMessage.ReplaceControlValue(Message.SessionKeyControlValueName, sessionKey);
if (encrypt)
{
aes.GenerateIV();
StreamUtilities.WriteStringToMemoryStream(outStream, aes.IV.Length + "!");
outStream.Write(aes.IV, 0, aes.IV.Length);
StreamUtilities.RunCryptoTransform(outMessage.Serialize(), aes.CreateEncryptor(), outStream, true);
}
else
{
outMessage.Serialize(outStream);
}
}
public static bool TestGenerate(Aes aes)
{
byte[] key = aes.Key;
byte[] IV = aes.IV;
aes.GenerateKey();
aes.GenerateIV();
if (aes.Key.Length != 32)
{
Console.WriteLine("Error - Aes.GenerateKey wrong length: {0}", aes.Key.Length);
return false;
}
if (aes.IV.Length != 16)
{
Console.WriteLine("Error - Aes.GenerateIV wrong length: {0}", aes.IV.Length);
return false;
}
if (CompareBytes(aes.Key, key))
{
Console.WriteLine("Error - Aes.GenerateKey did not change key");
return false;
}
if (CompareBytes(aes.IV, IV))
{
Console.WriteLine("Error - Aes.GenerateIV did not change IV");
return false;
}
return true;
}
