Abstract: A method for enhancing data encryption using multiple-key lists is disclosed. A first multiple-key list and a second multiple-key list for a decryption key are created, wherein each multiple-key list comprises plural partial decryption keys. Content to be accessed is encrypted using an encryption key corresponding to the decryption key. The first multiple-key list is stored in a hidden area of a memory device storing the content. The second multiple-key list is stored in the memory device. When the memory device is installed on an electronic device, an application installed in the electronic device is activated to select a first partial decryption key from the first multiple-key list stored in the hidden area and a second partial decryption key from the memory device, re-organizes and codes the first and second partial decryption keys to recover the decryption key, and decrypts the content using the decryption key, enabling the electronic device to access the content.

Abstract: Content management methods and systems are provided. First, a UID of a component of a device is read. The UID may be performed with an operation or not. Then, it is determined whether or not the UID matches with a predefined identification attached to the content. When the UID matches with the predefined identification, the content in the device is allowed to be accessed.

Abstract: Application management methods and systems are provided. The OS (Operating System) information of a specific platform of a device is first obtained. A specific application among a plurality of applications is selected according to the OS information, wherein the applications are respectively coded for a plurality of platforms. Then, the selected application is executed on the device.

Abstract: Digital content management systems and methods are provided for mass production of one or multiple digital contents. During the digital content management, the digital contents are first composed and encrypted to obtain encrypted digital contents. Then, the encrypted digital contents are copied and stored to at least one storage device. Finally, different identification data corresponding to the digital contents is respectively offered and stored to the at least one storage device. In this application, since the digital contents are first protected by encryption, and then copied to the storage device, the risk of the digital contents to be stolen or manipulated is reduced. Additionally, since the identification data are stored to the storage device in the last stage of the digital content management system, the efficiency of the mass production of the digital contents is improved.