EP1902404A1

EP1902404A1 - System provided with several electronic devices and a security module

Info

Publication number: EP1902404A1
Application number: EP06776134A
Authority: EP
Inventors: Klaus Finkenzeller; Florian Gawlas; Gisela Meister
Original assignee: Giesecke and Devrient GmbH
Current assignee: Giesecke and Devrient Mobile Security GmbH
Priority date: 2005-07-06
Filing date: 2006-07-05
Publication date: 2008-03-26
Also published as: JP2009500735A; JP5107915B2; CN101243452A; CN102722676A; DE102005031629A1; US20080297313A1; WO2007003429A1

Abstract

The invention relates to a system comprising a first electronic device (2) a security module (1) and a second electronic device (9, 10, 14, 21). The security module (1) is fixedly connected to the first electronic device (2) and comprises a security system (3) for safely storing data and/or carrying out cryptographic operations and a first interface (4) for communicating with the first electronic device (2). The inventive system is characterised in that the security module (1) comprises a second interface which makes it possible to carry out a direct wireless communication with the second electronic device (9, 10, 14, 21).

Description

System with several electronic devices and one security module

The invention relates to a system with a plurality of electronic devices and a security module which is firmly bound to one of the electronic devices. Furthermore, the invention relates to an electronic device with a security module, which is firmly bound to the electronic device.

It is already known to equip a computer system with a security module, which is designed as a security chip firmly bound to the computer system. Such a security module is also referred to as a Trusted Piatform Module, or TPM for short, if it complies with specifications of the Trusted Computing Group (TGC). These specifications enable a defined safety standard.

Through the security module, the computer system can be marked as trustworthy and protected against manipulation. This is of particular interest if security-relevant operations are to be carried out with the computer system.

The security module can be addressed via a defined interface by the operating system or the application software of the computer system. For example, the security module can be used as a secure, ie protected against unauthorized access memory. In particular, the state of the computer system can be stored in the security module. The stored state of the computer system can be requested by a third party, for example a server. In order to ensure, in a way that is trustworthy for the recipient, that the information transmitted to the recipient has not been tampered with, the security module can, for example, perform an authentic transmission with an RSA signature function. In addition, the security module the execution of other cryptographic algorithms, such as HMAC, generation of random numbers, etc. serve.

With known security modules is already a high-quality protection of a computer system possible. However, a malfunction or a manipulation of the computer system may under certain circumstances lead to the security module not providing usable information and thus the actual state of the computer system with the aid of the security module can not be determined. An intentionally caused malfunction of the security module, in conjunction with other manipulations, could even be used under certain circumstances to play a proper function for a third party accessing it.

From WO 00/14984 A a security module is also known, which serves to two electronic devices, such as a mobile phone and a bank terminal to authenticate against each other and to secure the communication between the two by encryption, so as to carry out, for example, a secure transactions to enable a bank terminal using a mobile phone. The security module has a first interface for connection to a first device, such as a mobile phone, and a second interface designed in particular as a Bluetooth interface for communication with a second electronic device, such as a corresponding security module in a bank terminal. For use, the security module is connected to one of the devices, such as a cell phone, by means of which a user subsequently receives communication with another device, such as a bank terminal, and, for example, carries out a transaction. The security module acts as a secure mediator. The invention has for its object to reliably ensure the usability of a firmly bound to an electronic device security module.

This object is achieved by a system with the combination of features of claim 1 and an electronic device according to claim 21.

The system according to the invention comprises a first electronic device, a security module and a second electronic device. The security module is firmly bound to the first electronic device and has a security device for secure storage of data and / or for performing cryptographic operations and a first interface for communication with the first electronic device. The special feature of the system according to the invention is that the security module has a second interface for the autonomous implementation of direct contactless communication with the second electronic device. The second electronic device may, in particular, be an external device.

The invention has the advantage that the possibility of communication of the second electronic device with the security module of the first electronic device is reliably ensured. Since it takes place independently of the connection between the first electronic device and the security module, this communication is still possible and trustworthy, particularly in the case of a manipulation or a malfunction of the first electronic device, and can be carried out in a standardized manner. This means that with the help of the security module, the trustworthiness of the first electronic device can be checked at a high security level. - A -

The first interface is preferably galvanically connected to the first electronic device.

The second interface may be formed as an integral part of the safety device.

In a first variant, the second interface is designed as a passive contactless interface. This has the advantage that the security module is still operational even in the event of a total failure of the first electronic device and can communicate with the second electronic device. In this case, it is possible for the security module to supply the energy required for the operation contactlessly via the passive contactless interface. The security module can thus be operated even if it receives no operating voltage from the first electronic device.

In a second variant, the second interface is designed as an active contactless interface. This also enables communication with a second electronic device, which itself is not able to generate a field for contactless data transmission. It is particularly advantageous if the active contactless interface can be operated in different communication modes. This enables communication with differently trained communication partners.

Likewise, it is also possible that the security module has a passive contactless interface and an active contactless interface. This has the advantage that the advantages of both interface variants can be used. In this case, the security module to a control device for optional Activation of the passive contactless interface or the active contactless interface. In particular, the control device can make the activation depending on whether the operating module is supplied with an operating voltage from the first electronic device. As a result, it can be ensured, for example, that the safety module is still accessible via the passive contactless interface in the event of a failure of the operating voltage.

The active contactless interface is preferably designed according to the NFC standard.

Via the second interface, for example, data stored in the security device can be transmitted to the second electronic device. In particular, the data may be diagnostic data of the first electronic device or cryptographic data. Furthermore, it can be provided that the data is only transmitted when the first electronic device and the second electronic device belong to a group of electronic devices for which a data transmission has been enabled among each other. In this way, an uncomplicated data transmission between electronic devices that belong, for example, the same person.

The second electronic device may include a security module communicating directly with the security module of the first electronic device without contact.

By way of example, transactions of the cashless payment transaction can be processed via the second interface, with which rights stored in the security device are acquired. Likewise is It is also possible that via the second interface a password entered into the second electronic device is transmitted to the security module of the first electronic device.

The first electronic device may be, for example, a computer or a mobile phone. The second electronic device may be, for example, an RFID reader, an NFC device, a contactless chip card, a computer or a mobile phone. The security module is preferably designed as a trusted platform module.

The invention further relates to an electronic device with a security module, which is firmly bound to the electronic device. The security module has a security device for secure storage of data and / or for carrying out cryptographic operations and a first interface for communication with the electronic device. The special feature of the electronic device according to the invention is that the security module has a second interface for the autonomous implementation of an external contactless communication independently of the electronic device.

The invention will be explained below with reference to the embodiments illustrated in the drawings.

Show it:

1 is a schematic diagram of a first embodiment of a system with an inventively designed security module, 2 is a schematic diagram of a second embodiment of a system with the security module,

3 is a schematic diagram of a third embodiment of a system with the security module and

Fig. 4 is a schematic diagram of a fourth embodiment of a system with the security module.

1 shows a schematic representation of a first exemplary embodiment of a system having a security module 1 designed according to the invention. The security module 1 is designed as a component of an electronic device 2, for example a personal computer, a personal digital assistant (PDA) or a mobile telephone, and has security device 3, a device interface 4 and a passive contactless device

Interface 5 on. The security device 3 provides a number of security functionalities, such as access-protected storage of data, execution of cryptographic operations, etc. according to the specifications of the Trusted Computing Group (TGC), so that the security module 1 can be used as a Trusted Platform Module (TPM). With the help of the security module 1 can thus be implemented in the intrinsically unsafe electronic device 2, a certain security standard.

The device interface 4 and the passive contactless interface 5 are each connected to the safety device 3. Via the device interface 4 there is a communication connection to a software 6 of the electronic device 2. The software 6 of the electronic device 2 is, for example, an operating system or an application. The Communication link is formed as a galvanic connection, for example to a motherboard of the personal computer, to a microprocessor of the PDA or to a controller of the mobile telephone. In particular, a communication of the security device 3 with the software 6 of the electronic device 2 required for ensuring the trustworthiness of the electronic device 2 is handled via this communication connection. Furthermore, a connection to a network 7, for example the Internet, can also be established via the communication connection.

Via the passive contactless interface 5, a communication connection independent of the communication connection of the device interface 4 for carrying out a communication with a second electronic device 9, 10 can be produced. As a result of the independence of the two communication links, communication via the passive contactless interface 5 can be carried out autonomously. Among other things, the communication can be carried out via the interface 5 at any time. The second electronic device 9, 10 may be an external device. An antenna coil 8 for contactless communication is connected to the passive contactless interface 5. The antenna coil 8 can be arranged directly on the security module 1, which is designed, for example, as a security chip. Antennas mounted on semiconductor chips are known per se by the term "coil on chip." In this design of the antenna coil 8, the range of the contactless communication is very low and is generally limited to a few mm to a few cm Devices 2 require that the electronic device 2 must first be mechanically opened to an external communication partner to enable contactless communication with the security module 1.

Alternatively to the arrangement directly on the security module 1, the antenna coil 8 can also be attached to a readily accessible point of the electronic device 2 and connected to the passive contactless interface 5 of the security module 1 via a cable connection, for example a coaxial line. A possible installation location for the antenna coil 8 is, for example, a 5 ¹ A "drive bay of a personal computer Furthermore, it is also possible to use the antenna coil 8 as an external computer

Perform component and connect via a plug-in cable connection to the electronic device 2. In this case, the antenna coil 8 may be accommodated, for example, in an attractively designed housing, which is set up separately from the electronic device 2.

As a communication partner for the contactless communication with the security module 1, an RFID reader 9 and an NFC device 10 are shown by way of example in FIG. 1. RFID stands for Radio Frequency Identification. NFC stands for Near Field Communication and refers to a data transmission by means of high-frequency magnetic alternating fields, for example with the frequency 13.56 MHz. The RFID reader 9 is designed, for example, in accordance with the ISO / IEC 14443 standard and has an antenna coil 11. The NFC device 10 has an antenna coil 12 and is operated as a reader for communication with the passive contactless interface 5 of the security module 1.

When the electronic device 2 is switched on, it supplies the safety module 1 with the necessary operating voltage, so that the safety module 1 is ready for operation and, for example, is able to operate via the device interface 4 received operating parameters of the electronic device 2 to perform cryptographic operations for the electronic device 2, etc.

The illustrated in Fig. 1 training of the security module 1 also allows operation of the security module 1, even if the electronic device 2 is turned off or for any other reason provides no operating voltage for the security module 1. Such operation of the security module 1 independently of the electronic device 2 is always possible when the antenna coil 8 of the security module 1 is in the range of a sufficiently strong field. Then, the voltage induced in the antenna coil 8 and supplied to the passive contactless interface 5 can be used as the operating voltage for the security module 1. A field suitable for this purpose can be generated both with the RFID reader 9 and with the NFC device 10 and has, for example, a frequency of 13.56 MHz.

In particular, it is provided that the safety module 1 is always supplied with the operating voltage provided by the electronic device 2 when an operating voltage is provided by the electronic device 2. If no operating voltage is available via the electronic device 2 and nevertheless an operation of the security module 1 is desired, then the operating voltage is generated by a contactless energy transfer via the antenna coil 8 to the passive contactless interface 5.

The passive contactless interface 5 serves not only for the reception of energy, but also for the contactless transmission and reception of data, preferably by means of the same fields with which the energy is transmitted. This means that the security module 1 is independent of the func- ons or operating state of the electronic device 2 is operational and in particular is able to communicate with the outside world. This communication can neither be prevented nor manipulated by the electronic device 2, so that the transmitted data is very reliable. Preferably, the security module 1 is able to perform a secure communication via the passive contactless interface 5, for. Via a trusted channel. In this way, with the security module 1, for example, a reliable monitoring of the electronic device 2 or a reliable protection against loss of important data can be realized. Specific applications of the security module 1 will be described in more detail below.

All information on the first embodiment also apply to the other embodiments, as far as no different versions are made there.

2 shows a schematic representation of a second exemplary embodiment of a system with the security module 1. In the second exemplary embodiment, the security module 1 has an active contactless interface 13 instead of the passive contactless interface 5. This makes it possible to additionally provide a contactless chip card 14 as a communication partner for the security module 1. Otherwise, the second embodiment corresponds to the first embodiment shown in FIG.

The active contactless interface 13 is able to generate a high-frequency magnetic alternating field itself, for example with the frequency 13.56 MHz. Thus, the active contactless interface 13 can perform communication even when the antenna coil 8 is not in a field of a communication partner. This allows for example the communication of the active contactless interface 13 with the contactless smart card 14, which is similar in terms of their communication capabilities of the passive contactless interface 5 of the security module 1 according to the first embodiment. However, it is necessary to supply energy to the security module 1 for the operation of the active contactless interface 13. Thus, operation of the security module 1 and in particular communication via the active contactless interface 13 are only possible if the security module 1 from the electronic device 2, a sufficient operating voltage is supplied.

The active contactless interface 13 is designed, for example, as an NFC interface and then has similar communication options as the NFC device 10. For the communication with the communication partners shown in FIG. 2, the active contactless interface 13 can be operated in different communication modes. For example, the active contactless interface 13 is operated in a "being card" communication mode for communication with the RFID reader 9. In this communication mode, the active contactless interface 13 behaves like a card and communicates, for example, with the ISO / IEC 14443 standard RFID reader 9. For communication with the NFC device 10, the active contactless interface 13 is operated in a "peer to peer" communication mode, ie communication takes place under similar communication partners. Finally, for communication with the contactless chip card 14, a communication mode "being reader" is provided in which the active contactless interface 13 behaves like a reading device and communicates according to, for example, ISO / IEC 14443 or ISO / IEC 15693. The active contactless interface 13 thus offers more communication options than the passive contactless interface 5. However, the active contactless interface 13 can only be used if the security module 1 is supplied by the electronic device 2 with an operating voltage, whereas the passive contactless interface 5 one from the electronic Device 2 independent operation of the security module 1 allows. All these advantages are present together in another embodiment, which is shown in Fig. 3.

3 shows a schematic representation of a third embodiment of a system with the security module 1. In the third embodiment, the security module 1 has both the passive contactless interface 5 of the first embodiment and the active contactless interface 13 of the second embodiment, which are connected in parallel and can be operated optionally. For this purpose, the security module 1 has a first switching device 15, a second switching device 16 and a voltage detector 17. The first switching device 15 connects the safety device 3 depending on the switching state either with the passive contactless interface 5 or with the active contactless interface 13. The second switching device 16 connects the antenna coil 8 depending on the switching state either with the passive contactless interface 5 or with the active contactless interface 13. The voltage detector 17 monitors the security module 1 supplied from the electronic device 2 operating voltage and controls the two switching devices 15 and 16. If the voltage detector 17 detects a sufficient operating voltage, then he controls the two switching devices 15 and 16 so that the safety device. 3 and the antenna coil 8 are respectively connected to the active non-contact interface 13. In this case, the functionalities described in the second embodiment are available. supply. On the other hand, if the voltage detector 17 detects a too low operating voltage, it controls the two switching devices 15 and 16 so that the safety device 3 and the antenna coil 8 are each connected to the passive contactless interface 5. Thus, the functionalities described in the first embodiment are now available.

4 shows a schematic representation of a fourth exemplary embodiment of a system with the security module 1. The security module 1 is designed in a corresponding manner as in the first exemplary embodiment illustrated in FIG. The electronic device 2, in which the security module 1 is installed, has a software stack 18, a system software 19 and an application software 20 and is connected to the network 7.

In addition, a further electronic device 21 is shown in Fig. 4, which communicates with the security module 1 of the electronic device 2 without contact. The further electronic device 21 has an RFID reader 9 with an antenna coil 11, an NFC device 10 with an antenna coil 12, a safety device 22, a device interface 23, a software stack 24, a system software 25, an application software 26 and a keyboard 27 on. Via the RFID reader 9 or the NFC device 10, the further electronic device 21 can communicate in a contactless way directly with the passive contactless interface 5 of the security module 1 of the electronic device 2.

In the embodiments described for the systems with the security module 1, there are a large number of possibilities for utilizing the capabilities of the security module 1, in particular the capability of direct contactless data transmission. Below are some possible ones Applications described by way of example. Insofar as it is necessary in these applications to ensure readiness for operation of the security module 1, irrespective of the state of the electronic device 2, one of the security modules 1 with passive contactless interface 5 shown in FIGS. 1, 3 and 4 is used in each case. Otherwise, the security module 1 shown in FIG. 2 with active contactless interface 13 can also be used, which is only ready for operation when it is supplied with an operating voltage by the electronic device 2.

In a first application, the passive contactless interface 5 is used to establish a backup of the data of the security module 1. This application is of particular interest when the electronic device 2 is no longer functional because, for example, the power supply is defective or there is another hardware error or software error. Likewise, a manipulation of the software 6 or the system software 19 or the application software 20 could be present, so that it is no longer trustworthy.

In the first application, for example, the further electronic device 21 illustrated in FIG. 4 communicates with the security module 1 via the passive contactless interface 5 with the aid of the RFID reader 9 or the NFC device 10. After a successful authentication, the data of the Safety device 3 transmitted to the other electronic device 21 and stored there. For example, these data may be keys to cryptographic algorithms, such as asymmetric RSA

Keys for encryption or decryption and / or signature creation of data or to pass passwords. The data transmitted by the security module 1 can be stored in the security device 22 of the further electronic device 21 or in a security module of a other functioning and trusted electronic device. If keys for hard disk encryption or keys for encryption of such keys are read out, they can be used to decrypt encrypted data on memories of the electronic device 2. Such data would not be reconstructed in a defective electronic device 2 without other backup mechanisms.

A second application is to read out diagnostic data of the electronic device 2 from the security module 1 using the RFID reader 9 or the NFC device 10 via the passive contactless interface 5. Diagnostic data can be measured data about the system state, eg. B. BIOS, operating system, application, be. The measurement data are measured according to the concept of the TCG during booting of the electronic device 2 and stored in the safety device 3 in so-called Platform Configuration Registers (PCR). An authorized user can read out the measurement data directly from the PCRs. Defective or manipulated system software 19 or application software 20 can not prevent the transmission of the measured data to the authorized user. The user, for example an administrator, can use the PCR values that have been reliably obtained to ascertain which areas of the software 6 or the system software 19 or the application software 20 are still trustworthy and which areas are untrustworthy. The reading out of the measurement data from the security module 1 is possible even in the event of total failure of the electronic device 2.

A third application concerns the secure acquisition and storage of benefit entitlements. The entitlements may constitute a ticket for public transport, a ticket or other monetary benefits. The benefit claims can, for example, over the network 7 can be safely loaded onto the security module 1. For this purpose, special protocols are provided in the TCG, such. B. a TCG compliant TLS connection. The payment process can take place with the aid of the RFID reader 9 or the NFC device 10 via the passive contactless interface 5 of the security module 1. For this purpose, preferably a secure transmission is performed via a secure channel. Such a secure channel may be constructed using the RFID reader 9 or the NFC device 10, the security device 22 and the software stack 23.

A fourth application relates to the secure password input via the keyboard 27 or another input unit of the further electronic device 21, wherein the password using the RFID reader 9 or the NFC device 10 via the passive contactless interface 5 to Sicherheitseinrich- device. 3 of the electronic device 2 is transmitted. The contactless transmission allows a direct transmission path. This reduces the risk that passwords will be spied on by the possibly manipulated system software 19 or application software 20 of the electronic device 2. In a development, the password transmission can also be effected by a cryptographically secured channel between the electronic device 2 and the further electronic device 21. The secure channel can be constructed in accordance with the concepts of the TCG, in particular with the aid of the safety devices 3 and 22.

A fifth application concerns the copy protection of a portable data carrier, e.g. B. a CD. The portable data carrier is designed such that it contains a contactless data carrier which can communicate with the security module 1 via the active contactless interface 13 in an analogous manner as the contactless chip card 14 shown in FIG. there Rights can be managed with special protection mechanisms that prevent unauthorized copying of rights. Such a protection mechanism can be realized, for example, by means of an access-controlled read command. The read command allows the copying of special data, such as: B. rights to listen to a piece of music, only if the rights are subsequently deleted on the electronic device 2. In the case of defective electronic devices 2, the rights could be secured without the risk of misuse of the unauthorized duplication.

Another possible protection mechanism involves the storage of safety-critical data, which are stored in the installation of software on the portable data carrier and the security module 1 of the electronic device 2. The stored data can prevent unauthorized duplication of the data of the portable data carrier.

A sixth application is the secure transmission of large amounts of data. The security module 1 of the electronic device 2 exchanges with the security module of another electronic device via the passive contactless interface 5 or the active contactless interface 13 only safety-critical data, such. As a key from. The security modules 1 in this application also take over the task of encrypting the large amounts of data and after the transfer via a fast interface such. B. IRDA or WLAN, to decrypt again.

A seventh application is to group together a plurality of electronic devices 2 each having a security module 1. For example, it would be conceivable that mobile phones and landline phones, and other electronic devices 2, z. A PDA, a group belong. The determination of the group affiliation, but in particular the communication between electronic devices 2 of a group, via the security modules 1. Within a group actions can be performed that can not be performed with electronic devices 2 outside the group. So z. B. a data match take place, or on request, data can also be read by other electronic devices 2. A user of a landline connection could then z. B. also call on telephone numbers of his mobile phone without this turn on. So that data can not be corrupted by a defective or manipulated electronic device 2, a password mechanism of the safety device 3 can be used. In this case, critical data are "encrypted" with the password via an HMAC and are only readable if the password is entered correctly.

In addition to the described applications, there are many other possible applications for systems with the security module 1. In all applications, at least one electronic device 2 each has a security module 1. The communication partner of the electronic device 2 may also have a security module 1 with security device 3, device interface 4 and passive contactless interface 5 or active contactless interface 13. In this case, a direct communication between the security modules 1 of the electronic device 2 and the communication partner can be provided. Likewise, it is also possible that the communication partner only has a security device 3 and an associated device interface 4 or even has no TPM security.

Claims

Patent claims

1. System with - a first electronic device (2),

- A security module (1) which is fixedly bound to the first electronic device (2) and a security device (3) for the secure storage of data and / or for performing cryptographic operations and a first interface (4) for communication with the first electronic Device (2), and

- a second electronic device (9, 10, 14, 21), characterized in that the security module (1) has a second interface (5, 8, 13) for the autonomous implementation of a direct contactless communication with the second electronic device (9, 10 , 14, 21).

2. System according to claim 1, characterized in that the first interface (4) is galvanically connected to the first electronic device (2).

3. System according to any one of the preceding claims, characterized in that the second interface is formed as an integral part of the safety device (3).

4. System according to any one of the preceding claims, characterized in that the second interface is formed as a passive contactless interface (5).

5. System according to claim 4, characterized in that the safety module (1) via the passive contactless interface (5) the energy required for the operation is supplied without contact.

6. System according to one of claims 1 to 3, characterized in that the second interface is formed as an active contactless interface (13).

7. System according to claim 6, characterized in that the active contactless interface (13) is operable in different communication modes.

8. System according to one of claims 1 to 3, characterized in that the security module (1) has a passive contactless interface (5) and an active contactless interface (13).

9. System according to claim 8, characterized in that the security module (1) has a control device (17) for selectively activating the passive contactless interface (5) or the active contactless interface (13).

10. System according to claim 9, characterized in that the control device (17) performs the activation depending on whether the

Security module (1) from the first electronic device (2) an operating voltage is supplied.

11. System according to one of claims 6 to 10, characterized in that the active contactless interface (13) is designed according to the NFC standard.

12. System according to any one of the preceding claims, characterized in that via the second interface in the security Ein- direction (3) stored data to the second electronic device (9, 10, 14, 21) are transmitted.

13. System according to claim 12, characterized in that the data is diagnostic data of the first electronic device (2) or cryptographic data.

14. System according to any one of claims 12 or 13, characterized in that the data are transmitted only when the first electronic device (2) and the second electronic device (9, 10, 14, 21) of a group of electronic Belong to devices for which a data transfer between them has been released.

15. System according to one of the preceding claims, character- ized in that the second electronic device (9, 10, 14, 21) a

Security module which communicates with the security module (1) of the first electronic device (2) directly contactless.

16. System according to one of the preceding claims, character- ized in that over the second interface transactions of cashless payment transactions are handled, with which in the security device (3) stored permissions are acquired.

17. System according to any one of the preceding claims, characterized in that via the second interface in the second e- lektronische device (9, 10, 14, 21) entered password to the security module (1) of the first electronic device (2) transmitted becomes.

18. System according to any one of the preceding claims, characterized in that it is the first electronic device (2) is a computer or a mobile phone.

19. System according to any one of the preceding claims, characterized in that the second electronic device (9, 10, 14, 21) is an RFID reader, an NFC device, a contactless chip card, a computer or a mobile phone ,

20. System according to any one of the preceding claims, characterized in that the security module (1) is designed as a Trusted Platform Module.

21. Electronic device with a security module (1), which is firmly attached to the electronic device (2) and a safety device

(3) for secure storage of data and / or for performing cryptographic operations and a first interface (4) for communication with the electronic device (2), characterized in that the security module (1) a second interface for autonomous implementation an external contactless

Communication independent of the electronic device (2).