Portable terminal

Abstract

A portable terminal capable of encrypting a content and connectable to a module and removable memory card which stores an encrypted content, comprising an ID combination part configured to generate a combination ID by combining a device ID of the portable terminal and a device ID of at least the one module, and an encryption key generation part configured to generate an encryption key by using the combination ID generated from the ID combination part.

Description

BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS

The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the invention, and together with the general description given above and the detailed description of the embodiments given below, serve to explain the principles of the invention.

FIG. 1 is an exemplary view for explaining a schematic configuration and a flow of data to be protected by a CPRM for SD-Binding technique of a portable terminal regarding an embodiment of the present invention;

FIG. 2 is an exemplary view for explaining a schematic configuration and a flow of data to be protected by the CPRM for SD-Binding technique of a portable terminal regarding a first embodiment of the present invention; and

FIG. 3 is an exemplary view for explaining a schematic configuration and a flow of data to be protected by the CPRM for SD-Binding technique of a portable terminal regarding a second embodiment of the present invention.

Claims

1. A portable terminal capable of encrypting a content and connectable to a module and removable memory card which stores an encrypted content, comprising: an ID combination part configured to generate a combination ID by combining a device ID of the portable terminal and a device ID of at least the one module; andan encryption key generation part configured to generate an encryption key by using the combination ID generated from the ID combination part.

2. The portable terminal according to claim 1, further comprising: a first encryption part configured to encrypt a title key of the content by using the encryption key; anda second encryption part configured to encrypt the content by using the title key.

3. The portable terminal according to claim 1, further comprising a random number generation part configured to generate a random number, wherein the ID combination part combines device IDs in accordance with a value of the random number.

4. The portable terminal according to claim 3, wherein the ID combination part decides the device ID used for obtaining the combination ID in accordance with a value of the random number.

5. The portable terminal according to claim 3, wherein the ID combination part obtains the combination ID by using at least one calculation expression of a logical operation including XOR and NOT and of the four rules of arithmetic operations and by using a combination of the device IDs.

6. The portable terminal according to claim 2, further comprising a random number generation part configured to generate a random number, wherein the ID combination part combines device IDs in accordance with a value of the random number.

7. The portable terminal according to claim 6, wherein the ID combination part decides the device ID used for obtaining the combination ID in accordance with a value of the random number.

8. The portable terminal according to claim 6, wherein the ID combination part obtains the combination ID by using at least one calculation expression of a logical operation including XOR and NOT and of the four rules of arithmetic operations and by using a combination of the device IDs.

9. The portable terminal according to claim 8, wherein the ID combination part decides the device ID used for obtaining the combination ID in accordance with a value of the random number.