A method of sending or marshaling data from a device through a cryptographic unit in a software communications architecture (SCA), includes identifying an endian mode of the cryptographic unit, and determining if the data to be sent from the device has an endian mode that matches the endian mode of the cryptographic unit. If the endian modes match, the data is enabled to be sent through the cryptographic unit. If the endian modes do not match, the endian mode of the data is flipped and then the data is then enabled to be sent through the cryptographic unit.