Plagiarized Code using Archives

[oldfart]

Hi Erix920,

Here is some more "liberated" code from CodeProject.com - I hope that it may be some help.

bool CCrypto::Decrypt(const CByteArray& arData, CObject& serializable)
{
	//	Return failure if we don't have a context or key.
	if(m_hCryptProv == NULL || m_hKey == NULL)
		return false;

	//	Return failure if the object is not serializable.
	if(serializable.IsSerializable() == FALSE)
		return false;

	//	Decrypt the contents of the array to the memory file.
	if(InternalDecrypt(arData) == false)
		return false;

	//	Create a reading archive from the memory file.
	CArchive ar(&m_file, CArchive::load);

	//	Read the data from the memory file.
	serializable.Serialize(ar);
	
	//	Close the archive.
	ar.Close();

	//	And we're done.
	return true;
}
//	=============================================================================
bool CCrypto::InternalDecrypt(const CByteArray& arSource)
{
	//	Trash the file.
	m_file.SetLength(0);

	//	Write the contents of the byte array to the memory file.
	m_file.Write(arSource.GetData(), static_cast<UINT>(arSource.GetSize()));	//.GetCount()));
	m_file.Flush();

	//	Acquire direct access to the memory file buffer.
	BYTE* pData = m_file.Detach();

	//	We need a DWORD to tell decrpyt how much data we're encrypting.
	DWORD dwDataLength = static_cast<DWORD>(arSource.GetSize());	//.GetCount());
//	DWORD dwOldDataLength = dwDataLength;

	//	Now decrypt the data.
	if(!::CryptDecrypt(m_hKey, NULL, TRUE, 0, pData, &dwDataLength))
	{
		//	Free the memory we release from the memory file.
		delete [] pData;

		return false;
	}

	//	Set the length of the data file, write the decrypted data to it.
	m_file.SetLength(dwDataLength);
	m_file.Write(pData, dwDataLength);
	m_file.Flush();
	m_file.SeekToBegin();

	//	Free the memory we release from the memory file.
	delete [] pData;

	return true;
}