public void Encrypt(byte[] inputData, int offset, int length, Stream output, DataType dataType)
{
switch (getFilter(dataType))
{
case CryptFilter.Identity:
output.Write(inputData, offset, length);
return;
case CryptFilter.V2:
RC4 rc4 = getRC4(_curObjectKey, _curObjectKey.Length);
rc4.Crypt(inputData, offset, length, output);
return;
case CryptFilter.AESV3:
case CryptFilter.AESV2:
AES aes = getAES(_curObjectKey);
aes.Encrypt(inputData, offset, length, output);
return;
}
}
public void Decrypt(Stream input, int length, Stream output, DataType dataType)
{
switch (getFilter(dataType))
{
case CryptFilter.Identity:
for (int i = 0; i < length; ++i)
{
output.WriteByte((byte)input.ReadByte());
}
return;
case CryptFilter.V2:
RC4 rc4 = getRC4(_curObjectKey, _curObjectKey.Length);
rc4.Crypt(input, length, output);
return;
case CryptFilter.AESV2:
case CryptFilter.AESV3:
AES aes = getAES(_curObjectKey);
aes.Decrypt(input, length, output);
return;
}
}