Data carrier

FIELD: data carriers.

SUBSTANCE: device has energy-independent electronic memorizing device and microcontroller.

EFFECT: higher reliability, higher efficiency.

3 cl, 1 dwg

 

The invention relates to a data carrier with non-volatile electronic memory device for recording large amounts of data with the microcontroller, suitable for performing cryptographic operations, and access to a storage device is only possible via the microcontroller.

Such data carriers are used to provide the ability to store large amounts of data, and media data is also suitable for use as removable media data. Protection of access to data through the microcontroller must prevent access to data by third parties not having the right of access.

In the relatively new field of use of removable media data of this kind are used, for example, for saving downloaded from the Internet data arrays musical material, or electronic books. In a possible case of conventional personal computer (PC) serves as a loading station, whereby the data arrays receive and store the media data. Then the saved data can be played back on portable playback devices, for example an array of MP3 data (digital audio data format, developed by the Fraunhofer Institute for manufacturing) can be played on a mobile MP3 player.

In other applications in which such data carriers are used as a replacement for floppy disks or removable hard drives. In this case, often remain particularly sensitive data that must be protected from access by third parties not having access rights. For this dataset can be encrypted before being stored on the data carrier and then in encrypted form stored on a data carrier. In any event, this means higher costs, so in many cases encrypt data refuse.

Due to these features prevents the possibility of reading the data by third parties who do not have access rights. However, in many cases from the point of view of the source data also significant is the fact that someone who should be transmitted, for example, because we are talking about data, for which provision should apply. This problem cannot be solved by the above-mentioned devices.

The task of the invention to provide a data carrier which is suitable for writing large amounts of data and provides a high reliability for the stored data and controlled data output.

This problem is solved by a data carrier of the aforementioned type which is characterized by the fact that the data before storing in the storage device is authenticating the user against the data source using a microcontroller.

Due to the pre is provided in the invention perform data carrier thus ensuring that that data is always encrypted loaded into the storage device. At the same time by the microcontroller is user authentication. While by maintaining encrypted protected data to the user using the user authentication from the data source ensures that data is always issued only to a specific user.

In a preferred embodiment, the storage device is larger than 1 MB and is made in the form of chip cards.

The invention is explained in more detail below in the example implementation. The drawing shows the invention, the data carrier device for downloading data from the Internet.

The data storage device 1 has a non-volatile mass memory 2 memory capacity in a typical case of more than 1 MB. For constructive execution memory can be applied to various technologies, such as flash memory, OTP (one-time programmable memory), MTP (multiple times programmable memory) or the like. In addition, the data carrier is designed as a chip card, is cryptocontroller 3 who can apply standard methods of encryption, such as RSA or elliptic curve. The data storage device 1 is connected with the station 4 download. Soedinenieto be accessed through the electrical contact pads or in a contactless manner via the antenna. As station 4 download can be provided by special devices or can be used a standard PC, which provides an appropriate interface for information exchange with the carrier 1 data. Station 4 download can also be connected to the Internet 5. Preferably, if the station 4 download is a mobile radio communications device that can establish a wireless connection to the Internet 5. Thanks corresponding to the invention, the media data may be used in a particularly flexible manner.

Due to the microcontroller 3 measures of protection may be implemented in a flexible way. So the microcontroller to identify the client in relation to an Internet service provider (ISP) and the calculation process as the EU or payment card. Memory 2 then writes the loaded data, and data is written to the memory in encrypted form.

In use, different from the above-described application, the encrypted data when loaded by the microcontroller 3 are interpreted so that they are available to the user. While the keys themselves as a certificate for the optimal protection of access to data stored on the data carrier.

When performing a protection mechanism can be used all known from the prior art tools, as they are all based on the flexibilities can be used with the microcontroller 3. You should also take into account future developments in encryption technology.

Reliability, provide such a card, superior reliability CD or DVD and allows you to implement a procedure of digital rights management (DRM) in the framework of e-Commerce.

1. The data medium containing the non-volatile electronic storage device (2) for receiving large amounts of data and the microcontroller (3)designed for performing cryptographic operations, and access to a storage device (2) is only possible via the microcontroller (3), characterized in that the storage device (2) has a memory size larger than 1 megabyte, and that the data before storing in a storage device (2) is the user authentication with respect to the data source when using a microcontroller (3).

2. The data carrier according to claim 1, characterized in that the carrier (1) data represents the removable storage device.

3. The data carrier according to claim 1 or 2, characterized in that the data carrier is made in the form of chip cards.



 

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