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Portable data carrier having additional functionality

A technology for data carrying and additional functions, which is used in electrical digital data processing, instruments, memory systems, etc.

Active Publication Date: 2012-08-22
GIESECKE & DEVRIENT MOBILE SECURITY GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The disadvantage of this solution is that all users of the data carrier must be granted the corresponding write rights for the execution of additional function modules

Method used

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  • Portable data carrier having additional functionality
  • Portable data carrier having additional functionality
  • Portable data carrier having additional functionality

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0026] refer to figure 1 , shows a portable data carrier 10 in the form of a memory card. It comprises a data communication interface 20 for contact type data communication with suitable reading means (not shown), control means 30 and memory 40 . As an alternative or in addition to data communication interface 20 , an antenna coil (not shown) can also be provided to data communication interface 20 for contactless data communication.

[0027] The control means 30 comprise a controller of the data carrier 10 and required software means for controlling the data carrier 10, such as an operating system. The function of the control device 30 will be described in more detail below.

[0028] Memory 40 (eg, non-volatile rewritable flash memory) is divided into different domains. Domain 210 is suitable for data carrier users to store data such as text, pictures, music data, etc., and these data can be stored in subdomains 212, 214, 216 respectively according to content. Information ...

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PUM

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Abstract

The invention relates to a method in a portable data carrier (10) for carrying out an additional functionality (362; 364) in the data carrier (10), wherein the data carrier (10) comprises a memory (40) and wherein the additional functionality (362; 364) is invoked by means of the conventional read command initiated by access from outside of the data carrier (10) to the memory (40) of the data carrier (10), wherein the additional functionality is further specified by a further access of at least one further conventional read command to the memory (40) of the data carrier (10).

Description

technical field [0001] The present invention relates to a method in a portable data carrier such as a memory card and correspondingly adapted data carrier for use in a portable data carrier via existing read and write access to data carrier commands from outside the data carrier Additional function modules are executed on the data carrier. Background technique [0002] A portable data carrier basically configured as a storage medium can support additional functional modules, for example within the framework of user authentication vis-a-vis to the data carrier or for data stored on the data carrier Encryption and decryption. In order to keep the access to the data carrier simple from outside the data carrier (which in the case of simple storage media is achieved by existing read and write instructions), it is desirable to also use the known read and write commands from outside the data carrier command to activate the additional function module, wherein the data carrier make...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F13/38G06F13/42
CPCG06F13/385G06F13/4234G06F21/71G06F21/72G06F21/79G06F12/0246
Inventor A.海德
Owner GIESECKE & DEVRIENT MOBILE SECURITY GMBH