internal WinzipAesCryptoStream(Stream stream, WinzipAesEncryptionData winzipAesEncryptionData, long length)
{
this.stream = stream;
totalBytesLeftToRead = length;
rijndael = CreateRijndael(winzipAesEncryptionData);
}
internal WinzipAesCryptoStream(Stream stream, WinzipAesEncryptionData winzipAesEncryptionData, long length)
{
this.stream = stream;
totalBytesLeftToRead = length;
rijndael = CreateRijndael(winzipAesEncryptionData);
}
private IBufferedCipher CreateRijndael(WinzipAesEncryptionData winzipAesEncryptionData)
{
var blockCipher = new BufferedBlockCipher(new RijndaelEngine());
var param = new KeyParameter(winzipAesEncryptionData.KeyBytes);
blockCipher.Init(true, param);
return blockCipher;
}
internal WinzipAesCryptoStream(Stream stream, WinzipAesEncryptionData winzipAesEncryptionData, long length)
{
this.stream = stream;
this.totalBytesLeftToRead = length;
this.cipher = this.CreateCipher(winzipAesEncryptionData);
byte[] rgbIV = new byte[0x10];
this.transform = this.cipher.CreateEncryptor(winzipAesEncryptionData.KeyBytes, rgbIV);
}
private IBufferedCipher CreateRijndael(WinzipAesEncryptionData winzipAesEncryptionData)
{
var blockCipher = new BufferedBlockCipher(new RijndaelEngine());
var param = new KeyParameter(winzipAesEncryptionData.KeyBytes);
blockCipher.Init(true, param);
return(blockCipher);
}
internal WinzipAesCryptoStream(Stream stream, WinzipAesEncryptionData winzipAesEncryptionData, long length)
{
this.stream = stream;
this.totalBytesLeftToRead = length;
this.cipher = this.CreateCipher(winzipAesEncryptionData);
byte[] rgbIV = new byte[0x10];
this.transform = this.cipher.CreateEncryptor(winzipAesEncryptionData.KeyBytes, rgbIV);
}
private SymmetricAlgorithm CreateCipher(WinzipAesEncryptionData winzipAesEncryptionData)
{
RijndaelManaged cipher = new RijndaelManaged();
cipher.BlockSize = BLOCK_SIZE_IN_BYTES * 8;
cipher.KeySize = winzipAesEncryptionData.KeyBytes.Length * 8;
cipher.Mode = CipherMode.ECB;
cipher.Padding = PaddingMode.None;
return cipher;
}
private SymmetricAlgorithm CreateCipher(WinzipAesEncryptionData winzipAesEncryptionData)
{
RijndaelManaged managed = new RijndaelManaged();
managed.BlockSize = 0x80;
managed.KeySize = winzipAesEncryptionData.KeyBytes.Length * 8;
managed.Mode = CipherMode.ECB;
managed.Padding = PaddingMode.None;
return(managed);
}
internal WinzipAesCryptoStream(Stream stream, WinzipAesEncryptionData winzipAesEncryptionData, long length)
{
this.stream = stream;
totalBytesLeftToRead = length;
cipher = CreateCipher(winzipAesEncryptionData);
var iv = new byte[BLOCK_SIZE_IN_BYTES];
transform = cipher.CreateEncryptor(winzipAesEncryptionData.KeyBytes, iv);
}
private SymmetricAlgorithm CreateCipher(WinzipAesEncryptionData winzipAesEncryptionData)
{
var cipher = Aes.Create();
cipher.BlockSize = BLOCK_SIZE_IN_BYTES * 8;
cipher.KeySize = winzipAesEncryptionData.KeyBytes.Length * 8;
cipher.Mode = CipherMode.ECB;
cipher.Padding = PaddingMode.None;
return(cipher);
}
internal WinzipAesCryptoStream(Stream stream, WinzipAesEncryptionData winzipAesEncryptionData, long length)
{
this._stream = stream;
_totalBytesLeftToRead = length;
_cipher = CreateCipher(winzipAesEncryptionData);
var iv = new byte[BLOCK_SIZE_IN_BYTES];
_transform = _cipher.CreateEncryptor(winzipAesEncryptionData.KeyBytes, iv);
}
private SymmetricAlgorithm CreateCipher(WinzipAesEncryptionData winzipAesEncryptionData)
{
#if !SILVERLIGHT && !PORTABLE
RijndaelManaged cipher = new RijndaelManaged();
cipher.BlockSize = BLOCK_SIZE_IN_BYTES * 8;
cipher.KeySize = winzipAesEncryptionData.KeyBytes.Length * 8;
cipher.Mode = CipherMode.ECB;
cipher.Padding = PaddingMode.None;
return cipher;
#else
throw new NotSupportedException("Cannot decrypt Winzip AES with Silverlight or WP7.");
#endif
}
private SymmetricAlgorithm CreateCipher(WinzipAesEncryptionData winzipAesEncryptionData)
{
#if !SILVERLIGHT && !PORTABLE
RijndaelManaged cipher = new RijndaelManaged();
cipher.BlockSize = BLOCK_SIZE_IN_BYTES * 8;
cipher.KeySize = winzipAesEncryptionData.KeyBytes.Length * 8;
cipher.Mode = CipherMode.ECB;
cipher.Padding = PaddingMode.None;
return(cipher);
#else
throw new NotSupportedException("Cannot decrypt Winzip AES with Silverlight or WP7.");
#endif
}
internal WinzipAesCryptoStream(Stream stream, WinzipAesEncryptionData winzipAesEncryptionData, long length,
CryptoMode mode)
{
this.mode = mode;
this.stream = stream;
totalBytesLeftToRead = length;
hmac = new HMACSHA1(winzipAesEncryptionData.IvBytes);
cipher = CreateCipher(winzipAesEncryptionData);
var iv = new byte[BLOCK_SIZE_IN_BYTES];
transform = cipher.CreateEncryptor(winzipAesEncryptionData.KeyBytes, iv);
//if (_mode == CryptoMode.Encrypt)
//{
// _iobuf = new byte[2048];
// _PendingWriteBlock = new byte[BLOCK_SIZE_IN_BYTES];
//}
}
internal WinzipAesCryptoStream(Stream stream, WinzipAesEncryptionData winzipAesEncryptionData, long length,
CryptoMode mode)
{
//this.mode = mode;
this.stream = stream;
totalBytesLeftToRead = length;
hmac = new HMACSHA1(winzipAesEncryptionData.IvBytes);
cipher = CreateCipher(winzipAesEncryptionData);
var iv = new byte[BLOCK_SIZE_IN_BYTES];
transform = cipher.CreateEncryptor(winzipAesEncryptionData.KeyBytes, iv);
//if (_mode == CryptoMode.Encrypt)
//{
// _iobuf = new byte[2048];
// _PendingWriteBlock = new byte[BLOCK_SIZE_IN_BYTES];
//}
}
private void LoadHeader(ZipFileEntry entryHeader, Stream stream)
{
if (FlagUtility.HasFlag(entryHeader.Flags, HeaderFlags.Encrypted))
{
if (!entryHeader.IsDirectory &&
entryHeader.CompressedSize == 0 &&
FlagUtility.HasFlag(entryHeader.Flags, HeaderFlags.UsePostDataDescriptor))
{
throw new NotSupportedException(
"SharpCompress cannot currently read non-seekable Zip Streams with encrypted data that has been written in a non-seekable manner.");
}
if (password == null)
{
throw new CryptographicException("No password supplied for encrypted zip.");
}
if (entryHeader.CompressionMethod != ZipCompressionMethod.WinzipAes)
{
byte[] buffer = new byte[12];
stream.Read(buffer, 0, 12);
entryHeader.PkwareTraditionalEncryptionData = PkwareTraditionalEncryptionData.ForRead(password,
entryHeader,
buffer);
entryHeader.CompressedSize -= 12;
}
else
{
#if NO_CRYPTO
throw new NotSupportedException("Cannot decrypt Winzip AES with Silverlight or WP7.");
#else
var data = entryHeader.Extra.SingleOrDefault(x => x.Type == ExtraDataType.WinZipAes);
WinzipAesKeySize keySize = (WinzipAesKeySize)data.DataBytes[4];
byte[] salt = new byte[WinzipAesEncryptionData.KeyLengthInBytes(keySize) / 2];
byte[] passwordVerifyValue = new byte[2];
stream.Read(salt, 0, salt.Length);
stream.Read(passwordVerifyValue, 0, 2);
entryHeader.WinzipAesEncryptionData = new WinzipAesEncryptionData(keySize, salt, passwordVerifyValue,
password);
entryHeader.CompressedSize -= (uint)(salt.Length + 2);
#endif
}
}
if (entryHeader.IsDirectory)
{
return;
}
//if (FlagUtility.HasFlag(entryHeader.Flags, HeaderFlags.UsePostDataDescriptor))
//{
// entryHeader.PackedStream = new ReadOnlySubStream(stream);
//}
//else
//{
switch (mode)
{
case StreamingMode.Seekable:
{
entryHeader.DataStartPosition = stream.Position;
stream.Position += entryHeader.CompressedSize;
}
break;
case StreamingMode.Streaming:
{
entryHeader.PackedStream = stream;
}
break;
default:
{
throw new InvalidFormatException("Invalid StreamingMode");
}
}
//}
}
private void LoadHeader(ZipFileEntry entryHeader, Stream stream)
{
if (FlagUtility.HasFlag(entryHeader.Flags, HeaderFlags.Encrypted))
{
if (!entryHeader.IsDirectory && entryHeader.CompressedSize == 0 &&
FlagUtility.HasFlag(entryHeader.Flags, HeaderFlags.UsePostDataDescriptor))
{
throw new NotSupportedException("SharpCompress cannot currently read non-seekable Zip Streams with encrypted data that has been written in a non-seekable manner.");
}
if (_password == null)
{
throw new CryptographicException("No password supplied for encrypted zip.");
}
entryHeader.Password = _password;
if (entryHeader.CompressionMethod == ZipCompressionMethod.WinzipAes)
{
ExtraData data = entryHeader.Extra.SingleOrDefault(x => x.Type == ExtraDataType.WinZipAes);
if (data != null)
{
var keySize = (WinzipAesKeySize)data.DataBytes[4];
var salt = new byte[WinzipAesEncryptionData.KeyLengthInBytes(keySize) / 2];
var passwordVerifyValue = new byte[2];
stream.Read(salt, 0, salt.Length);
stream.Read(passwordVerifyValue, 0, 2);
entryHeader.WinzipAesEncryptionData =
new WinzipAesEncryptionData(keySize, salt, passwordVerifyValue, _password);
entryHeader.CompressedSize -= (uint)(salt.Length + 2);
}
}
}
if (entryHeader.IsDirectory)
{
return;
}
//if (FlagUtility.HasFlag(entryHeader.Flags, HeaderFlags.UsePostDataDescriptor))
//{
// entryHeader.PackedStream = new ReadOnlySubStream(stream);
//}
//else
//{
switch (_mode)
{
case StreamingMode.Seekable:
{
entryHeader.DataStartPosition = stream.Position;
stream.Position += entryHeader.CompressedSize;
break;
}
case StreamingMode.Streaming:
{
entryHeader.PackedStream = stream;
break;
}
default:
{
throw new InvalidFormatException("Invalid StreamingMode");
}
}
//}
}
private SymmetricAlgorithm CreateCipher(WinzipAesEncryptionData winzipAesEncryptionData)
{
throw new NotSupportedException("Cannot decrypt Winzip AES with Silverlight or WP7.");
}
private SymmetricAlgorithm CreateCipher(WinzipAesEncryptionData winzipAesEncryptionData)
{
RijndaelManaged managed = new RijndaelManaged();
managed.BlockSize = 0x80;
managed.KeySize = winzipAesEncryptionData.KeyBytes.Length * 8;
managed.Mode = CipherMode.ECB;
managed.Padding = PaddingMode.None;
return managed;
}
