# US 8,464,941 B2 · Method and terminal for providing controlled access to a memory card

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- Number: US 8,464,941 B2
- Document ID: US8464941B2
- Status: Granted
- Kind: B2
- Application number: 12/577,270
- Filed: 2009-10-12
- Published: 2010-04-15
- Granted: 2013-06-18
- Earliest claimed: 2008-10-13
- Assignees: Vodafone Holding GmbH
- Applicants: Najib Koraichi; Sebastiaan Hoeksel; Aguibou Mountaga Barry
- Inventors: Najib Koraichi; Sebastiaan Hoeksel; Aguibou Mountaga Barry
- Web page: https://patentgrep.com/patent/US8464941B2

## CPC

- G06F 21/79: in semiconductor storage media, e.g. directly-addressable memories
- G06F 21/73: by creating or determining hardware identification, e.g. serial numbers
- G06F 2221/2129: Authenticate client device independently of the user
- G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N)

## Abstract

There is provided a method for providing access to data securely stored in a memory card. An exemplary method comprises receiving the memory card in a terminal. The exemplary method also comprises transmitting a request for accessing the data via a communication link from the terminal to a device. The exemplary method additionally comprises sending first information from the device to the terminal via the communication link upon receipt of the request. In addition, the exemplary method comprises receiving the first information in the terminal and accessing the data using the first information.

## Claims

### Claim 1

A method for providing access to data securely stored in a memory card, the method comprising:
receiving the memory card with the data stored therein in a terminal;
transmitting a request for accessing the data via a communication link from the terminal to a device;
sending first information from the device to the terminal via the communication link upon receipt of the request, the first information being sent to the terminal in response to a user operation acquired from a user interface of the device; and
receiving the first information in the terminal and accessing the data using the first information.

### Claim 2 (depends on 1)

The method according to claim 1, wherein the device comprises a mobile communication device and the communication link comprises a mobile communication network.

### Claim 3 (depends on 1)

The method according to claim 1, wherein the device comprises a SIM card providing the first information.

### Claim 4 (depends on 1)

The method according to claim 1, wherein the communication link from the terminal to the device is established using second information, the second information being read from the memory card by the terminal.

### Claim 5 (depends on 4)

The method according to claim 4, wherein the second information comprises an MSISDN of the device.

### Claim 6 (depends on 1)

The method according to claim 1, wherein the request for accessing the data includes a digital signature of the memory card, the digital signature being verified in a SIM card of the device.

### Claim 7 (depends on 1)

The method according to claim 1, wherein the data is stored in encrypted form in the memory card, and wherein the first information comprises a cryptographic key for decrypting the data.

### Claim 8 (depends on 1)

The method according to claim 1, wherein the memory card comprises a security logic allowing accessing the data after having successfully verified the first information.

### Claim 9 (depends on 1)

The method according to claim 1, wherein the memory card comprises further data, which are not accessible using the first information.

### Claim 10

A system, comprising:
a terminal for accessing data stored in a memory card, the terminal comprising:
an acceptance device that is adapted to receive the memory card with the data stored therein;
a reading device adapted to read the data from the memory card using first information;
a sending component adapted to send a request for accessing the data via a communication link; and
a receiving component adapted to receive the first information via the communication link in response to the request; and
a device that comprises an authorising component coupled to a user interface, the authorising component being adapted to provide the first information in response to a receipt of the request in the device and a user operation acquired from the user interface.

### Claim 11 (depends on 10)

The system according to claim 10, wherein the device comprises a mobile communication device and the communication link includes a mobile communication network.

### Claim 12 (depends on 10)

The system according to claim 10, comprising a SIM card including the authorising component.

### Claim 13 (depends on 10)

The system according to claim 10, wherein the communication link is established using second information, the second information being read from the memory card by the terminal.

### Claim 14 (depends on 10)

The system according to claim 10, wherein the second information comprises an MSISDN of the device.