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Security unit and method for protecting data

A security unit and data protection technology, applied in digital data authentication, digital data protection, electronic digital data processing, etc., can solve the problem of digital data being only usable

Inactive Publication Date: 2007-08-22
NXP BV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because data transmission is restricted to authorized computers, digital data can only be used on registered computers

Method used

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  • Security unit and method for protecting data
  • Security unit and method for protecting data
  • Security unit and method for protecting data

Examples

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no. 1 example

[0111] DT2 Data transmission of encrypted second data D2 from the main processing unit 20 to the security unit 30 (first embodiment; reference: FIGS. 1 and 2 )

[0112] DT23 Key exchange between security unit 30 and presentation processing unit 42 (second embodiment; reference: FIGS. 3 and 4 )

[0113] DT3 Data transmission of re-encrypted second data D2 from the security unit 30 to the main processing unit 20 (first embodiment; reference: FIGS. 1 and 2 )

[0114] DT4 of the re-encrypted (first embodiment; reference: FIGS. 1 and 2 ) or encrypted (second embodiment; reference: FIGS. 3 and 4 ) second data D2 from the main processing unit 20 to the rendering processing unit 42 data transmission

[0115] DT5 Data transfer of processed first data D1 from main processing unit 20 to rendering processing unit 42

[0116] DT6 Data transfer of combined data D1+D2 from presentation data unit 42 to output device 44 .

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Abstract

In order to provide a protection system (100; 100') for protecting data (D1+D2), for instance at least one data processing program and / or at least one software application, the protection system (100; 100') comprising at least one data storage unit (10) for storing the data (D1+D2), at least one main processing unit (20) which is designed for processing at least part (D1) of the data (D1+D2), in particular for processing the first data (Dl) and optionally the encrypted second data (D2), the main processing unit (20) being connected with the data storage unit (10), at least one security unit (30), and at least one presentation processing unit (42) being connected with the main processing unit (20), wherein it is possible to prevent the use of illegal copies of the data (Dl+D2) and wherein neither an authorization nor a registration is required for running the data (DI+D2), it is proposed that the security unit (30) and the presentation processing unit (42) exchange at least one key, in particular at least one up-front agreed session key, for decrypting the encrypted second data (D2) and / or for re-encrypting the originally encrypted and then decrypted second data (D2).

Description

technical field [0001] The invention generally relates to improving data security by means of at least one security unit for securing data and a method for securing data. [0002] The invention also relates to a protection system for protecting data, such as at least one data processing program and / or at least one software application, said protection system comprising: [0003] - at least one data storage unit for storing data, [0004] - at least one main processing unit designed to process at least part of the data, in particular first data and optionally encrypted second data, said main processing unit being connected to said data storage unit, [0005] - a security unit, and [0006] - at least one rendering processing unit connected to said main processing unit [0007] (Reference: prior art document WO 02 / 067097A2). Background technique [0008] Software applications such as games or other executable software are protected in current systems by passwords, encrypte...

Claims

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Application Information

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IPC IPC(8): G06F21/22G06F21/10G06F21/12G06F21/33G06F21/60
CPCG06F21/602G06F21/10G06F2221/2153G06F21/335G06F21/123G06F21/125G06F2221/2107
Inventor 德克·卢泽尔-勃格恩里克·兹比拉
Owner NXP BV