public CryptoStream (Stream stream, ICryptoTransform transform, CryptoStreamMode mode)
{
if ((mode == CryptoStreamMode.Read) && (!stream.CanRead)) {
throw new ArgumentException (
Locale.GetText ("Can't read on stream"));
}
if ((mode == CryptoStreamMode.Write) && (!stream.CanWrite)) {
throw new ArgumentException (
Locale.GetText ("Can't write on stream"));
}
_stream = stream;
_transform = transform;
_mode = mode;
_disposed = false;
if (transform != null) {
if (mode == CryptoStreamMode.Read) {
_currentBlock = new byte [transform.InputBlockSize];
_workingBlock = new byte [transform.InputBlockSize];
}
else if (mode == CryptoStreamMode.Write) {
_currentBlock = new byte [transform.OutputBlockSize];
_workingBlock = new byte [transform.OutputBlockSize];
}
}
}
public InteractiveCryptoStream(Stream stream, ICryptoTransform transform, CryptoStreamMode mode, int bufferSizeInBlocks)
: base(stream)
{
if (bufferSizeInBlocks < 0)
{
throw new ArgumentOutOfRangeException("bufferSizeInBlocks", bufferSizeInBlocks, "BufferSize can't be less than 0");
}
if (bufferSizeInBlocks > 255)
{
bufferSizeInBlocks = 255;
}
this.mode = mode;
this.transform = transform;
this.writeBuffer = new byte[2 + transform.InputBlockSize * bufferSizeInBlocks];
this.writeBlockBuffer = new byte[transform.OutputBlockSize];
this.readPreBuffer = new byte[transform.OutputBlockSize * 5];
this.readBuffer = new byte[transform.InputBlockSize * 5];
this.writeBufferCount = 2;
this.readBufferCount = 0;
this.readBufferIndex = 0;
}
/// <summary>
/// Initializes a new instance of the <see cref="CmisSync.Lib.Streams.NonClosingHashStream"/> class.
/// </summary>
/// <param name='stream'>
/// Wrapped stream.
/// </param>
/// <param name='hashAlg'>
/// Hash algorithm, which should be used for hash calculations.
/// </param>
/// <param name='mode'>
/// Setting the mode, when hashing should be executed. On Read will transform the hash while reading, or Write mode for transforming while writing.
/// </param>
public NonClosingHashStream(Stream stream, HashAlgorithm hashAlg, CryptoStreamMode mode) : base(stream) {
if (hashAlg == null) {
throw new ArgumentNullException("hashAlg");
}
this.hashAlg = hashAlg;
this.mode = mode;
}
public ZipAESStream(Stream stream, ZipAESTransform transform, CryptoStreamMode mode) : base(stream, transform, mode)
{
this._stream = stream;
this._transform = transform;
this._slideBuffer = new byte[0x400];
this._blockAndAuth = 0x1a;
if (mode != CryptoStreamMode.Read)
{
throw new Exception("ZipAESStream only for read");
}
}
public OfbStream(Stream parent, SymmetricAlgorithm algo, CryptoStreamMode mode)
{
if (algo.Mode != CipherMode.CBC)
algo.Mode = CipherMode.CBC;
if (algo.Padding != PaddingMode.None)
algo.Padding = PaddingMode.None;
_parent = parent;
_cbcStream = new CryptoStream(new ZeroStream(), algo.CreateEncryptor(), CryptoStreamMode.Read);
_mode = mode;
_keyStreamBuffer = new byte[algo.BlockSize * Blocks];
_readWriteBuffer = new byte[_keyStreamBuffer.Length];
}
/// <summary>
/// Constructor
/// </summary>
/// <param name="stream">The stream on which to perform the cryptographic transformation.</param>
/// <param name="transform">Instance of ZipAESTransform</param>
/// <param name="mode">Read or Write</param>
public ZipAESStream(Stream stream, ZipAESTransform transform, CryptoStreamMode mode)
: base(stream, transform, mode)
{
_stream = stream;
_transform = transform;
_slideBuffer = new byte[1024];
_blockAndAuth = CRYPTO_BLOCK_SIZE + AUTH_CODE_LENGTH;
// mode:
// CryptoStreamMode.Read means we read from "stream" and pass decrypted to our Read() method.
// Write bypasses this stream and uses the Transform directly.
if (mode != CryptoStreamMode.Read) throw new Exception("ZipAESStream only for read");
}
// Constructor.
public CryptoStream(Stream stream, ICryptoTransform transform,
CryptoStreamMode mode)
{
this.stream = stream;
this.transform = transform;
this.mode = mode;
this.flushFinal = false;
if(mode == CryptoStreamMode.Read)
{
if(!(stream.CanRead))
{
throw new NotSupportedException
(_("IO_NotSupp_Read"));
}
}
else if(mode == CryptoStreamMode.Write)
{
if(!(stream.CanWrite))
{
throw new NotSupportedException
(_("IO_NotSupp_Write"));
}
}
else
{
throw new NotSupportedException
(_("Crypto_InvalidStreamMode"));
}
inBlockSize = transform.InputBlockSize;
outBlockSize = transform.OutputBlockSize;
if(transform.CanTransformMultipleBlocks)
{
inBufferSize = 1024 - (1024 % inBlockSize);
outBufferSize =
(inBufferSize / inBlockSize) * outBlockSize;
}
else
{
// We need at least two blocks in the input buffer to
// process padding blocks at the end of the stream.
inBufferSize = transform.InputBlockSize * 2;
outBufferSize = transform.OutputBlockSize;
}
inBuffer = new byte [inBufferSize];
outBuffer = new byte [outBufferSize];
inBufferPosn = 0;
outBufferPosn = 0;
sawEOF = false;
}
Stream ICryptoStreamProvider.GetDecryptStream(Stream stream, string keyId, CryptoStreamMode streamMode)
{
if (stream == null)
throw new ArgumentNullException(nameof(stream));
keyId = keyId ?? _defaultKeyId;
SymmetricKey key;
if (!_keyProvider.TryGetKey(keyId, out key))
throw new SerializationException("Encryption Key not found: " + keyId);
ICryptoTransform encryptor = CreateDecryptor(key.Key, key.IV);
return new DisposingCryptoStream(stream, encryptor, streamMode);
}
// Constructors
public CryptoStream(Stream stream, ICryptoTransform transform, CryptoStreamMode mode) {
_stream = stream;
_transformMode = mode;
_Transform = transform;
switch (_transformMode) {
case CryptoStreamMode.Read:
if (!(_stream.CanRead)) throw new ArgumentException(Environment.GetResourceString("Argument_StreamNotReadable"),"stream");
_canRead = true;
break;
case CryptoStreamMode.Write:
if (!(_stream.CanWrite)) throw new ArgumentException(Environment.GetResourceString("Argument_StreamNotWritable"),"stream");
_canWrite = true;
break;
default:
throw new ArgumentException(Environment.GetResourceString("Argument_InvalidValue"));
}
InitializeBuffer();
}
public CryptoStream(Stream stream, ICryptoTransform transform, CryptoStreamMode mode, bool leaveOpen)
{
_stream = stream;
_transformMode = mode;
_transform = transform;
_leaveOpen = leaveOpen;
switch (_transformMode)
{
case CryptoStreamMode.Read:
if (!(_stream.CanRead)) throw new ArgumentException(SR.Format(SR.Argument_StreamNotReadable, nameof(stream)));
_canRead = true;
break;
case CryptoStreamMode.Write:
if (!(_stream.CanWrite)) throw new ArgumentException(SR.Format(SR.Argument_StreamNotWritable, nameof(stream)));
_canWrite = true;
break;
default:
throw new ArgumentException(SR.Argument_InvalidValue);
}
InitializeBuffer();
}
/// <summary>
/// Initializes a new instance of the <see cref="CryptoStream"/> class.
/// </summary>
/// <param name="stream">The stream to write to or read from.</param>
/// <param name="transform">The cryptographic operation to use for transforming data.</param>
/// <param name="mode">The mode of operation.</param>
public CryptoStream(Stream stream, ICryptoTransform transform, CryptoStreamMode mode)
{
Requires.NotNull(stream, "stream");
Requires.NotNull(transform, "transform");
if (mode == CryptoStreamMode.Read)
{
Requires.Argument(stream.CanRead, "stream", "Stream is not readable.");
}
else if (mode == CryptoStreamMode.Write)
{
Requires.Argument(stream.CanWrite, "stream", "Stream is not writeable.");
}
else
{
Requires.That(false, "mode", "Unsupported mode.");
}
this.chainedStream = stream;
this.transform = transform;
this.mode = mode;
this.inputBuffer = new byte[transform.InputBlockSize];
this.outputBuffer = new byte[transform.OutputBlockSize];
}
public CryptoStream (System.IO.Stream stream, ICryptoTransform transform, CryptoStreamMode mode) {
return default(CryptoStream);
}
public MinimalCryptoStream(Stream stream, ICryptoTransform transform, CryptoStreamMode mode) : base(stream, transform, mode)
{
}
public SeekableCryptoStream(Stream stream, ICryptoTransform transform, CryptoStreamMode mode)
: base(stream, transform, mode)
{
_stream = stream;
}
public override CryptoStreamBase Initialize(Stream stream, ICryptoTransform transform, CryptoStreamMode mode)
{
_cryptoTransform = new CryptoTransformUnwrapper(transform);
System.Security.Cryptography.CryptoStreamMode streamMode;
switch (mode)
{
case CryptoStreamMode.Read:
streamMode = System.Security.Cryptography.CryptoStreamMode.Read;
break;
case CryptoStreamMode.Write:
streamMode = System.Security.Cryptography.CryptoStreamMode.Write;
break;
default:
streamMode = (System.Security.Cryptography.CryptoStreamMode)mode;
break;
}
_cryptoStream = new System.Security.Cryptography.CryptoStream(stream, _cryptoTransform, streamMode);
return(this);
}
/// <summary>
/// Creates new instance using 256 bit AES in CBC mode.
/// </summary>
/// <param name="stream">The stream on which to perform the cryptographic transformation.</param>
/// <param name="password">Password used for key and IV derivation.</param>
/// <param name="streamMode">The cryptographic transformation that is to be performed on the stream.</param>
/// <exception cref="System.ArgumentNullException">Stream cannot be null. -or- Password cannot be null.</exception>
/// <exception cref="System.ArgumentException">Stream mode must be either Read or Write. -or- Stream is not readable. -or- Stream is not writable.</exception>
/// <exception cref="System.IO.InvalidDataException">Unexpected end of stream. -or- Salted stream expected.</exception>
public OpenSslAesStream(Stream stream, Byte[] password, CryptoStreamMode streamMode)
: this(stream, password, streamMode, 256, CipherMode.CBC)
{
}
public CryptoStreamBase Create(Stream stream, ICryptoTransform cryptoTransform, CryptoStreamMode cryptoStreamMode)
{
return _cryptoStreamFactory.Create(stream, cryptoTransform, cryptoStreamMode);
}
protected abstract Stream CreateCryptoStream(Stream target, ICryptoTransform transform, CryptoStreamMode mode);
/// <summary> Provides reading and writing to a stream of base-64 characters. </summary>
public Base64Stream(Stream stream, CryptoStreamMode mode)
: base(stream, new Transform(mode), mode)
{
}
public ReturnableCryptoStream(Stream stream, ICryptoTransform transform, CryptoStreamMode mode, IDisposable algorithom)
: base(stream, transform, mode)
{
_transform = transform;
_algorithom = algorithom;
}
public static bool FileEncryptDES(string filePath, string password)
{
bool result;
string fileEncryptedPath = filePath + ".crp";
try
{
if (File.Exists(filePath))
{
byte[] buffer = File.ReadAllBytes(filePath);
byte[] passwordBytes = Encoding.UTF8.GetBytes(password);
// Set encryption settings -- Use password for both key and init. vector
DESCryptoServiceProvider provider = new DESCryptoServiceProvider();
ICryptoTransform transform = provider.CreateEncryptor(passwordBytes, passwordBytes);
CryptoStreamMode mode = CryptoStreamMode.Write;
// Set up streams and encrypt
MemoryStream memStream = new MemoryStream();
CryptoStream cryptoStream = new CryptoStream(memStream, transform, mode);
cryptoStream.Write(buffer, 0, buffer.Length);
cryptoStream.FlushFinalBlock();
// Read the encrypted message from the memory stream
byte[] encryptedFile = new byte[memStream.Length];
memStream.Position = 0;
memStream.Read(encryptedFile, 0, encryptedFile.Length);
File.WriteAllBytes(fileEncryptedPath, encryptedFile);
if (File.Exists(fileEncryptedPath))
{
result = true;
}
else
{
result = false;
}
}
else
{
result = false;
}
if (result)
{
Sistem.WriteLog(Sistem.GetLogTag(Sistem.EnumLogTags.CRYPTOGRAPHY), "Create File Encrypt DES in " + fileEncryptedPath, false, false, true, classColor);
}
else
{
Sistem.WriteLog(Sistem.GetLogTag(Sistem.EnumLogTags.CRYPTOGRAPHY), "File " + filePath + " does not exist", false, false, true, classColor);
}
}
catch (Exception ex)
{
Sistem.WriteLog(ex, Sistem.GetLogTag(Sistem.EnumLogTags.CRYPTOGRAPHYCERROR) + "FileEncryptDES(string filePath, string password)", true);
error += ex.Message + "\n";
result = false;
}
return(result);
}
public DisposingCryptoStream(Stream stream, ICryptoTransform transform, CryptoStreamMode mode)
: base(stream, transform, mode)
{
_stream = stream;
_transform = transform;
}
private static byte[] DoCryptoTransform(String keyFileName, byte[] sourceData, CreateTransform transformFunc, CryptoStreamMode mode)
{
#if CRYPTOTRIAL
using (MemoryStream mstr = new MemoryStream())
{
using (var provider = CreateProvider(keyFileName))
{
using (var cryptoStream = new CryptoStream(mstr, transformFunc(provider), mode))
{
cryptoStream.Write(sourceData, 0, sourceData.Length);
}
}
return(mstr.ToArray());
}
#else
return(sourceData);
#endif
}
/// <summary>
/// Creates new instance.
/// </summary>
/// <param name="stream">The stream on which to perform the cryptographic transformation.</param>
/// <param name="password">Password used for key and IV derivation.</param>
/// <param name="streamMode">The cryptographic transformation that is to be performed on the stream.</param>
/// <param name="keySize">Size of key.</param>
/// <param name="cipherMode">The mode for operation of the symmetric algorithm.</param>
/// <exception cref="System.ArgumentNullException">Stream cannot be null. -or- Password cannot be null.</exception>
/// <exception cref="System.ArgumentException">Stream mode must be either Read or Write. -or- Stream is not readable. -or- Stream is not writable. -or- Key size mode must be either 128, 192 or 256 bits. -or- Cipher mode must be either CBC or OFB.</exception>
/// <exception cref="System.IO.InvalidDataException">Unexpected end of stream. -or- Salted stream expected.</exception>
public OpenSslAesStream(Stream stream, Byte[] password, CryptoStreamMode streamMode, Int32 keySize, CipherMode cipherMode)
{
if (stream == null)
{
throw new ArgumentNullException("stream", "Stream cannot be null.");
}
if (password == null)
{
throw new ArgumentNullException("password", "Password cannot be null.");
}
if ((streamMode != CryptoStreamMode.Read) && (streamMode != CryptoStreamMode.Write))
{
throw new ArgumentException("Stream mode must be either Read or Write.", "streamMode");
}
if ((streamMode == CryptoStreamMode.Read) && (stream.CanRead == false))
{
throw new ArgumentException("Stream is not readable.", "stream");
}
if ((streamMode == CryptoStreamMode.Write) && (stream.CanWrite == false))
{
throw new ArgumentException("Stream is not writable.", "stream");
}
if ((keySize != 128) && (keySize != 192) && (keySize != 256))
{
throw new ArgumentException("Key size mode must be either 128, 192 or 256 bits.", "keySize");
}
if ((cipherMode != CipherMode.CBC) && (cipherMode != CipherMode.ECB))
{
throw new ArgumentException("Cipher mode must be either CBC or OFB.", "cipherMode");
}
if (streamMode == CryptoStreamMode.Read)
{
var buffer = new byte[16];
var len = stream.Read(buffer, 0, 16);
if (len < 16)
{
throw new InvalidDataException("Unexpected end of stream.");
}
for (int i = 0; i < 8; i++)
{
if (buffer[i] != SaltedTextCache[i])
{
throw new InvalidDataException("Salted stream expected.");
}
}
var salt = new byte[8];
Buffer.BlockCopy(buffer, 8, salt, 0, 8);
byte[] key, iv;
GenerateKeyAndIV(password, salt, keySize, 128, out key, out iv);
using (var aes = new RijndaelManaged()) {
aes.BlockSize = 128;
aes.KeySize = keySize;
aes.Mode = cipherMode;
aes.Padding = PaddingMode.PKCS7;
this.Transform = aes.CreateDecryptor(key, iv);
this.Stream = new CryptoStream(stream, this.Transform, CryptoStreamMode.Read);
}
}
else
{
var salt = new byte[8];
Rnd.GetBytes(salt);
stream.Write(SaltedTextCache, 0, 8);
stream.Write(salt, 0, 8);
byte[] key, iv;
GenerateKeyAndIV(password, salt, keySize, 128, out key, out iv);
using (var aes = new RijndaelManaged()) {
aes.BlockSize = 128;
aes.KeySize = keySize;
aes.Mode = cipherMode;
aes.Padding = PaddingMode.PKCS7;
this.Transform = aes.CreateEncryptor(key, iv);
this.Stream = new CryptoStream(stream, this.Transform, CryptoStreamMode.Write);
}
}
}
/// <summary>
/// Creates new instance.
/// </summary>
/// <param name="stream">The stream on which to perform the cryptographic transformation.</param>
/// <param name="password">Password used for key and IV derivation. UTF-8 encoding is assumed.</param>
/// <param name="streamMode">The cryptographic transformation that is to be performed on the stream.</param>
/// <param name="keySize">Size of key.</param>
/// <param name="cipherMode">The mode for operation of the symmetric algorithm.</param>
/// <exception cref="System.ArgumentNullException">Stream cannot be null. -or- Password cannot be null.</exception>
/// <exception cref="System.ArgumentException">Stream mode must be either Read or Write. -or- Stream is not readable. -or- Stream is not writable. -or- Key size mode must be either 128, 192 or 256 bits. -or- Cipher mode must be either CBC or OFB.</exception>
/// <exception cref="System.IO.InvalidDataException">Unexpected end of stream. -or- Salted stream expected.</exception>
public OpenSslAesStream(Stream stream, String password, CryptoStreamMode streamMode, Int32 keySize, CipherMode cipherMode)
: this(stream, UTF8Encoding.UTF8.GetBytes(password), streamMode, keySize, cipherMode)
{
}
public InteractiveCryptoStream(Stream stream, ICryptoTransform transform, CryptoStreamMode mode)
: this(stream, transform, mode, 255)
{
}
public PwdTdsCryptoStream(System.IO.Stream Stream, CryptoStreamMode Mode, string Password)
: this(Stream, CreateTripleDESTransform(Mode, Password), Mode)
{
}
/// <summary> Provides a crypto-transform used to read/write to a stream of base-64 characters. </summary>
public Transform(CryptoStreamMode mode)
{
_mode = mode;
}
/// <summary>
/// Creates a CryptoStream chain of transforms.
/// </summary>
/// <param name="stream">The ultimate stream to be read from or written to.</param>
/// <param name="cryptoStreamMode">Whether to prepare for read or write operations to trigger the operations.</param>
/// <param name="transforms">The transforms to apply.</param>
/// <returns>The start of the chain of CryptoStreams.</returns>
private static CryptoStream Chain(Stream stream, CryptoStreamMode cryptoStreamMode, params ICryptoTransform[] transforms)
{
Requires.NotNull(stream, "stream");
Requires.NotNullOrEmpty(transforms, "transforms");
if (cryptoStreamMode == CryptoStreamMode.Write)
{
// Arrange the transforming streams in this fashion:
// T1 -> T2 -> stream
// Which means we need recursion to define:
// CS1(CS2(stream))
using (IEnumerator<ICryptoTransform> transformsEnumerator = transforms.Cast<ICryptoTransform>().GetEnumerator())
{
return (CryptoStream)ChainWrite(stream, transformsEnumerator);
}
}
else
{
// Arrange the transforming streams in this fashion:
// stream -> T1 -> T2
// Which means we need iteration to define:
// CS2(CS1(stream))
foreach (var transform in transforms)
{
stream = new CryptoStream(stream, transform, CryptoStreamMode.Read);
}
return (CryptoStream)stream;
}
}
public WakeariStream(Stream stream, ICryptoTransform transform, CryptoStreamMode mode)
: base(stream, transform, mode)
{
LastBytes = new byte[20];
}
IVCryptoStream(Stream stream, ICryptoTransform transform, CryptoStreamMode mode)
: base(stream, transform, mode)
{
}
internal ShaStream(Stream stream, CryptoStreamMode mode) : base(stream, mode)
{
sha = SHA256.Create();
shaStream = new CryptoStream(stream, sha, mode);
}
static CryptoStream CreateCryptoStream(Stream stream, byte[] userID, string password, string pepper, CryptoStreamMode cryptoStreamMode)
{
if (stream == null)
throw new ArgumentNullException ("stream");
if (userID == null)
throw new ArgumentNullException ("userID");
if (password == null)
throw new ArgumentNullException ("password");
if (pepper == null)
throw new ArgumentNullException ("pepper");
var Rij = CreateRijndael (userID, password, pepper);
ICryptoTransform RijTrans = Rij.CreateDecryptor ();
CryptoStream cstream = new CryptoStream (stream, RijTrans, cryptoStreamMode);
return cstream;
}
protected override Stream CreateCryptoStream(Stream target, ICryptoTransform transform, CryptoStreamMode mode)
{
return(new CryptoStream(target, transform, mode));
}
public BaseStreamNonDisposingCryptoStream(Stream stream, ICryptoTransform transform, CryptoStreamMode mode)
: base(stream, transform, mode)
{ }
public NotClosingCryptoStream(Stream stream, ICryptoTransform transform, CryptoStreamMode mode)
: base(stream, transform, mode)
{
}
public CryptoStreamEx(Stream s, ICryptoTransform t, CryptoStreamMode m,
SymmetricAlgorithm a) : base(s, t, m)
{
m_t = t;
m_a = a;
}
protected abstract Stream CreateCryptoStream(Stream target, ICryptoTransform transform, CryptoStreamMode mode);
public CryptoStream(Stream stream, ICryptoTransform transform, CryptoStreamMode mode);
public HashStream(Stream stream, CryptoStreamMode mode, HashAlgorithmName hashAlgorithmName, HashAlgorithm hashCalculator = null)
: base(stream, hashCalculator ?? (hashCalculator = HashAlgorithm.Create(hashAlgorithmName.Name)), mode)
{
HashAlgorithmName = hashAlgorithmName;
this.hashCalculator = hashCalculator;
}
public CryptoStream(System.IO.Stream stream, ICryptoTransform transform, CryptoStreamMode mode)
{
return(default(CryptoStream));
}
// Constructors
public CryptoStream(System.IO.Stream stream, ICryptoTransform transform, CryptoStreamMode mode)
{
}
public PwdTdsCryptoStream(System.IO.Stream Stream, ICryptoTransform Transform, CryptoStreamMode Mode)
: base(Stream, Transform, Mode)
{
m_CryptoTransform = Transform;
m_bDisposed = false;
}
// Constructors
public CryptoStream(Stream stream, ICryptoTransform transform, CryptoStreamMode mode)
: this(stream, transform, mode, false)
{
}
public DisposingCryptoStream(Stream stream, ICryptoTransform transform, CryptoStreamMode mode)
: base(stream, transform, mode)
{
_stream = stream;
_transform = transform;
}
public CryptoStream(Stream stream, ICryptoTransform transform, CryptoStreamMode mode)
{
Contract.Requires(stream != null);
}
// can it be used by service worker?
// the view-source is the shared key
// the client creates a new key
// to encrypted respond to
// https://sites.google.com/a/jsc-solutions.net/backlog/knowledge-base/2014/201411/20141108
public __CryptoStream(Stream stream, ICryptoTransform transform, CryptoStreamMode mode)
{
// tested by ?
}
/// <summary> Provides reading and writing to a stream of hexidecimal characters. </summary>
public HexStream(Stream stream, CryptoStreamMode mode)
: base(stream, new Transform(mode), mode)
{ }
public AesCTRCryptoStream(Stream stream, AesCTRCryptoTransform transform, CryptoStreamMode streamMode) : this(stream, transform, streamMode, false)
{
}
public DerivedCryptoStream(Stream stream, ICryptoTransform transform, CryptoStreamMode mode) : base(stream, transform, mode)
{
}
public CryptoStreamBase Create(System.IO.Stream stream, ICryptoTransform cryptoTransform, CryptoStreamMode cryptoStreamMode)
{
return new CryptoStreamWrapper(new CryptoStream(stream, cryptoTransform, cryptoStreamMode));
}
internal ICryptoTransform GetCryptoTransform (CryptoStreamMode cryptoStreamMode)
{
ICryptoTransform transform = null;
MachineKeySection config = (MachineKeySection) WebConfigurationManager.GetSection (machineKeyConfigPath);
byte [] vk = MachineKeySectionUtils.ValidationKeyBytes (config);
switch (config.Validation) {
case MachineKeyValidation.SHA1:
transform = SHA1.Create ();
break;
case MachineKeyValidation.MD5:
transform = MD5.Create ();
break;
case MachineKeyValidation.AES:
InitializeEncryption ();
if (cryptoStreamMode == CryptoStreamMode.Read){
transform = Rijndael.Create().CreateDecryptor(vk, AES_IV);
} else {
transform = Rijndael.Create().CreateEncryptor(vk, AES_IV);
}
break;
case MachineKeyValidation.TripleDES:
InitializeEncryption ();
if (cryptoStreamMode == CryptoStreamMode.Read){
transform = TripleDES.Create().CreateDecryptor(vk, TripleDES_IV);
} else {
transform = TripleDES.Create().CreateEncryptor(vk, TripleDES_IV);
}
break;
}
return transform;
}
public NonClosingCryptoStream(Stream stream, ICryptoTransform transform, CryptoStreamMode mode, bool leaveOpen)
: base(stream, transform, mode)
{
mLeaveOpen = leaveOpen;
}
/// <summary>
/// Creates new instance using 256 bit AES in CBC mode.
/// </summary>
/// <param name="stream">The stream on which to perform the cryptographic transformation.</param>
/// <param name="password">Password used for key and IV derivation. UTF-8 encoding is assumed.</param>
/// <param name="streamMode">The cryptographic transformation that is to be performed on the stream.</param>
/// <exception cref="System.ArgumentNullException">Stream cannot be null. -or- Password cannot be null.</exception>
/// <exception cref="System.ArgumentException">Stream mode must be either Read or Write. -or- Stream is not readable. -or- Stream is not writable.</exception>
/// <exception cref="System.IO.InvalidDataException">Unexpected end of stream. -or- Salted stream expected.</exception>
public OpenSslAesStream(Stream stream, String password, CryptoStreamMode streamMode)
: this(stream, UTF8Encoding.UTF8.GetBytes(password), streamMode, 256, CipherMode.CBC)
{
}
// Constructors
public CryptoStream(Stream stream, ICryptoTransform transform, CryptoStreamMode mode)
: this(stream, transform, mode, false)
{
}
IVCryptoStream(Stream stream, ICryptoTransform transform, CryptoStreamMode mode)
: base(stream, transform, mode)
{
}
public MinimalCryptoStream(Stream stream, ICryptoTransform transform, CryptoStreamMode mode) : base(stream, transform, mode) { }
public BaseStreamNonDisposingCryptoStream(Stream stream, ICryptoTransform transform, CryptoStreamMode mode)
: base(stream, transform, mode)
{
}
/// <summary> Provides a crypto-transform used to read/write to a stream of hexidecimal characters. </summary>
public Transform(CryptoStreamMode mode) { _mode = mode; }
public SilentCryptoStream(Stream stream, ICryptoTransform transform, CryptoStreamMode mode)
: base(stream, transform, mode)
{
// stream is already implicitly validated non-null in the base constructor.
this.underlyingStream = stream;
}
