Function encrypt_stream_name

libcppcryptfs/filename/cryptfilename.cpp:1048–1079

}

const WCHAR * // returns base64-encoded, encrypted stream name.  input stream name is expected to start with colon
encrypt_stream_name(const CryptContext *con, const unsigned char *dir_iv, const WCHAR *stream, wstring& storage)
{

	if (!stream || stream[0] != ':')
		return NULL;

	wstring stream_without_type;
	wstring type;

	if (!remove_stream_type(stream, stream_without_type, type))
		return NULL;

	LPCWSTR rs;
	
	if (stream_without_type.length() > 1) {
		rs = encrypt_filename(con, dir_iv, stream_without_type.c_str() + 1, storage, NULL);
	} else {
		storage = L"";
		rs = storage.c_str();
	}

	if (!rs) 
		return NULL;

	if (is_long_name(rs))
		return NULL;

	storage = L":" + storage + type;

	return storage.c_str();
}

const WCHAR * // returns UNICODE plaintext stream name.  input stream name is expected to start with colon
decrypt_stream_name(CryptContext *con, const BYTE *dir_iv, const WCHAR *stream, wstring& storage)