Methods and apparatuses for protecting content in a storage device are described. In one method, a host device obtains from the storage device first information on a controller of the storage device and second information on a memory of the storage device. The host device also obtains third information calculated based on the first information and the second information, and permits access to encrypted content stored in the storage device based on the third information. The host device is configured to receive the encrypted content from the storage device.