WO2012070036A1 - Appareil et procédé d'appariement sécurisé en bande latérale - Google Patents

Appareil et procédé d'appariement sécurisé en bande latérale Download PDF

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Publication number
WO2012070036A1
WO2012070036A1 PCT/IL2010/000990 IL2010000990W WO2012070036A1 WO 2012070036 A1 WO2012070036 A1 WO 2012070036A1 IL 2010000990 W IL2010000990 W IL 2010000990W WO 2012070036 A1 WO2012070036 A1 WO 2012070036A1
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WO
WIPO (PCT)
Prior art keywords
pairing
unit
unique key
peripheral unit
communication link
Prior art date
Application number
PCT/IL2010/000990
Other languages
English (en)
Inventor
Yuval Itkin
Original Assignee
Dsp Group Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Dsp Group Ltd. filed Critical Dsp Group Ltd.
Priority to PCT/IL2010/000990 priority Critical patent/WO2012070036A1/fr
Publication of WO2012070036A1 publication Critical patent/WO2012070036A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L63/00—Network architectures or network communication protocols for network security
    • H04L63/18—Network architectures or network communication protocols for network security using different networks or channels, e.g. using out of band channels
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
    • H04W12/50—Secure pairing of devices
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L63/00—Network architectures or network communication protocols for network security
    • H04L63/06—Network architectures or network communication protocols for network security for supporting key management in a packet data network
    • H04L63/061—Network architectures or network communication protocols for network security for supporting key management in a packet data network for key exchange, e.g. in peer-to-peer networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
    • H04W12/60—Context-dependent security
    • H04W12/65—Environment-dependent, e.g. using captured environmental data
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/18—Self-organising networks, e.g. ad-hoc networks or sensor networks

Definitions

  • the present invention relates to pairing of devices in general, and more particularly to method and system for secured pairing of devices that are usually connected over a radio link.
  • a basic requirement for low-cost systems is secured link (especially for security alarm systems and cordless phones).
  • the root-of-trust for any secured wireless link is a secret digital key which is used by both parties in order to encrypt/decrypt any secured traffic.
  • a basic difficulty of setting the root-of-trust is the need to load the key from one device to the other device during initial pairing.
  • Vehicle alarm systems are using a special controlled state to pair a remote controller to the security system (through conditioning it by vehicle initial state and a sequence of key presses on the remote control).
  • This type of pairing is fail-safe in terms of false pairing but it is not safe as the pairing happens over radio link that is non-secured, the pairing process may be snooped by a listener that can detect the key and memorize it.
  • the present disclosure addresses the need for secured pairing of devices that are usually connected over a radio link.
  • An aspect of an embodiment of the invention relates to a apparatus and method for enabling a secured paring between a central unit and at least one peripheral unit.
  • a peripheral unit includes a short range communication link interface, such as a LED, an audio interface or an Infra-Red (I/R) I/F.
  • I/R Infra-Red
  • the central unit usually include a LED unit that provides visual indication about the detector detection status.
  • Cordless phone handset has an audio interface (speaker).
  • Bluetooth unit usually includes a LED.
  • These interfaces can be used either as is or with minor modification to transmit a unique key from the peripheral unit to the central unit.
  • a short range communication link interface such as LED, audio or IR interface enables to transmit a long unique key for secured pairing and also eliminates the need to manually keep or memorize the unique key for a later process of pairing.
  • apparatus to perform a pairing process comprising:
  • a central unit having a first short range communication link interface for receiving a
  • an at least one peripheral unit having a second short range communication link interface for transmitting a unique key for pairing to said central unit.
  • the apparatus further having a primary communication link between the central unit and the at least one peripheral unit, and wherein the primary communication link is used for initiating the paring process.
  • the at least one peripheral unit includes a storage unit for storing the unique key.
  • the storage unit is programmable.
  • the first or second short range communication link interface is LED or audio or IR interface (I F).
  • the apparatus is a home alarm, the at least one peripheral unit is an alarm detector and wherein an indication LED I/F is configured to transmit the unique key for pairing.
  • the apparatus is a vehicle alarm apparatus
  • the at least one peripheral unit is a vehicle alarm remote control and wherein an indication LED I/F is for transmitting the unique key for pairing.
  • the apparatus is a cordless mobile phone system
  • the at least one peripheral unit is a mobile phone handset and wherein an indication LED I/F is configured to transmit the unique key for pairing.
  • the apparatus is a cordless phone
  • the at least one peripheral unit is a mobile phone handset and wherein an audio I/F is configured to transmit the unique key for pairing.
  • the at least one peripheral unit is a Bluetooth device.
  • the at least one peripheral unit is a Bluetooth device and wherein a LED I/F is configured to transmit the unique key for pairing.
  • the apparatus is a Bluetooth mobile phone apparatus
  • the at least one peripheral unit is a Bluetooth device
  • an audio I/F is configured to transmit the unique key for pairing.
  • a method for providing secured pairing between a central unit and at least one peripheral unit comprising establishing a first short range communication link interface in said central unit; establishing a second short range communication link interface in said at least one peripheral unit; configuring said central unit to a key reception mode; and transmitting a unique key from said at least one peripheral unit to said central unit via said second short range communication link interface; and reception of said unique key by said central unit via said first short range communication link interface.
  • Fig. 1A is a schematic illustration of an alarm system in accordance with the prior art
  • Fig. IB is a schematic illustration of a cordless phone system in accordance with the prior art
  • Fig. 2A is a schematic illustration of an alarm system in accordance with the disclosed subject matter
  • Fig. 2B is a schematic illustration of a cordless phone system in accordance with the disclosed subject matter
  • Fig. 2C is a visual illustration showing a Bluetooth link between a Bluetooth headset and a mobile phone in accordance with the disclosed subject matter
  • Fig. 2D is a visual illustration showing an audio link between a cordless phone handset and a cordless phone base station in accordance with the disclosed subject matter.
  • Fig. 3 is a flowchart describing the steps of a method for providing secured pairing in accordance with the disclosed subject matter.
  • Fig. 1A is a schematic illustration of an alarm system 100 A in accordance with the prior art.
  • Fig. 1A shows a central control unit 103 that is connected with peripheral unit 1 13,116,119,122,125 through communication links 133,136,139,142,145 respectively.
  • Peripheral unit 113,1 16,119,122,125 can be alarm detectors.
  • the communication links 133,136,139,142,145 may be a wired or wireless connection.
  • Each of the peripheral unit 1 13,1 16,1 19,122,125 may have a LED interface (I/F) 153,156,159,162,165 respectively.
  • I/F LED interface
  • the LED I/F 153,156,159,162,165 is used for providing visual indication that the alarm detector detected an event - a useful mean for tracking the system functionality and also useful for system calibration and adjustment.
  • the alarm detectors are based on passive detection, i.e. the alarm detector is receiving IR radiation from the environment and sends an alarm signal through the communication link when there is a detection of an intruder by the IR alarm detector.
  • Input I/F 132 serves as an interface for providing the central control unit 103 with a specific key that identifies each of the five alarm detectors.
  • the installer has to read a short unique key that is attached to each one of peripheral unit 113,116,1 19,122,125, and to provide these keys to the central control unit 103.
  • There are many methods for providing the keys such as typing on a keyboard-like device, program a jumper etc. However it is obvious that this type of providing keys is restricted to short keys.
  • fig. 1A referred to a home alarm system 100
  • the same schematic illustration applies also to other systems that require a secure pairing.
  • a restaurant attendant system where central control unit 103 is the control unit that is held by the restaurant employee and peripheral unit 1 13,116,1 19,122,125 are devices that are located at the attendant tables and serve for indicating the attendant on an event (food is ready etc.).
  • peripheral unit 113, 116 are remote controllers that serve for activating/deactivating the vehicle alarm system and also for locking/unlocking functionality.
  • Bluetooth headset a mobile phone communicating with a Bluetooth mobile phone apparatus headset.
  • central control unit 203 represents the mobile phone
  • peripheral unit 1 13 represents the Bluetooth headset (In the mobile-Bluetooth headset case there is typically only one peripheral unit).
  • FIG. IB shows a schematic illustration of a cordless phone system 100B in accordance with the prior art.
  • Cordless phone system 100B includes a base station 173 and three cordless phones 175,177 and 179.
  • Each cordless phone 275 includes a speaker/microphone (hereinafter "speaker/microphone") I F 181,183 and 185 respectively.
  • the speaker/mic I/F is an I/F that typically exist in every cordless phone enabling to receive a user voice and hearing a far-end speaker.
  • the cordless phone system 100B further includes an input I/F 182 that serves for the pairing process.
  • Fig. 2A is a schematic illustration of an alarm system in accordance with the disclosed subject matter.
  • Fig. 2A shows a central control unit 203 and a peripheral unit 213 connected via two communication links: a first communication link 233 (hereinafter also a primary communication link) that is equal to the communication link that was described with reference to fig.
  • second communication link 231 that is a LED connection that is supported by LED I/F 206 in the central control unit 203 and LED I/F 263 in peripheral unit 213.
  • second communication link 231 which may be for example a LED connection, serves for providing central control unit 203 with a unique key (private key that is unique to each detector).
  • the key is stored in a key storage unit 265 which can be any type of memory component.
  • key storage unit 265 may be a programmable memory device, enabling to change the initial key which may be useful in cases where the user suspect a key leakage, or in systems that due to their high security requirements require to modify the key once in a while.
  • the process of pairing may be initiated by either the central control 203 unit (the more common case) or the peripheral unit 213 by usage of the first (primary) communication link 233 for transferring a "pairing request" command over the first communication link 233.
  • This mode of initiating a pairing process is very efficient, as usually both devices, the central control 203 unit and the peripheral unit 213 maintain a continuous bidirectional communication channel over the first communication link 233.
  • the central control unit 203 may transmit a "pairing request" command over an RF communication link, wherein this "pairing request" command, when received in the peripheral unit 213 (alarm detector), automatically puts the peripheral unit 231 in a mode of sending a unique key that is stored in a key storage unit 265 over the second communication link 231.
  • the peripheral unit 213 may receive the pairing request over the primary communication link and notify the user that an approval should be provided in order to send a unique key over the second communication link 231.
  • Central control unit 203 may be a vehicle alarm controller, a central unit of a home alarm system, a central unit of a restaurant attendant system, a mobile phone in mobile Bluetooth headset system as well as many other systems that require a pairing procedure before starting communication,
  • each alarm detector already includes a LED I/F that is used for providing a visual notification on events of detection (indication LED I/F).
  • LED I/F can easily and by low cost process be configured to transmit the key information to central control unit 203.
  • LED I/F 206 is used only for reception and thus it may be implemented by a simple CMOS detector or any other common low-cost light sensor.
  • LED receivers examples are such as Vishay TSOP12xx, TSOP48xx and TSOP62xx product series.
  • Sharp devices like: GPlUD26xK, GPlUD27xK and GPlUD28xK, where x is related to the modulation frequency.
  • Hualian devices of HRMxxOO series like the HRM3700 and HRM3800.
  • fig. 2 A (as well as fig. 1A) refers to a LED I/F
  • the present disclosure is not limited to LED I/F and the short range communication link 231
  • connection between the central control unit 203 and peripheral unit 213 may be implemented by other kinds of radiation, such as Infra Red (I/R) or such as audible signaling using a speaker.
  • I/R Infra Red
  • the term "short range communication link” should be construed as any wireless connection that has an effective range that does not exceed a few meters and therefore cannot be snooped by an unwanted listener that is in the distance that is more than a few meters.
  • Fig. 2B is a schematic illustration of cordless phone system 200B in accordance with the disclosed subject matter.
  • Fig. 2B shows a base station 273 and a cordless phone 275 that has a speaker/mic I/F 282 and a key storage 293 the usual connection between base station 273 and cordless phone 275 is performed via communication link 287 (same as communication link 187 as described in fig. IB) while for paring, providing base station with a key that is unique to cordless phone 275, a second link, audio link 285 is operated between microphone I/F 280 in base station 273 and speaker/mic I/F 282 in cordless phone 275.
  • Short range communication link interface 285 can be an audio link.
  • Short range communication link interface 285 may be using an already existing speaker/mic I/F 181 in fig. IB. Using the short range communication link interface 285 provides a safe link to transmit a unique key from cordless phone 275 to base station 273, the usage of voice link is much safer against eavesdropping since a voice link cannot be traced but only from very short distances, furthermore, the unique key is stored in key storage 293 and transferred by a non-human I/F, thus enabling the usage of long unique keys.
  • the present disclosure is not limited to any specific protocol or implementation for transferring a unique key from the peripheral unit (e.g 213, 275) to the central unit (e.g 203, 273).
  • the central unit e.g 203, 273
  • I.R. protocol e.g. defining a password by the user for controlling access to T.V. programs
  • devices like answering machines are commonly controlled by audio command (wired or wireless). While transferring a key from one device to a second device by means of LED,I/R, audio or other types of wireless communication are well known in the art, and could be readily implemented by a person that is skilled in the art, it will not be described in the present disclosure.
  • Fig. 2C is a visual illustration showing a Bluetooth link between a Bluetooth headset 240 and a mobile phone 243 in accordance with the disclosed subject matter.
  • Fig. 2C shows a Bluetooth headset 240 and a mobile phone 243.
  • Bluetooth headset 240 is configured to send a key by using control unit 248.
  • control unit 248 may include a single button for transmitting a predefined fixed key or alternatively, control unit 248 may include a user I/F that enables a user to program a desired key and configure parameters, such as key length etc.
  • Mobile phone 243 is configured to key reception mode by usage of control unit 246.
  • a key transmission is performed through LED I F 250 that transmits a predefined, or a programmed key that is received in LED sensor/receiver 244 in the Mobile phone. While most of Bluetooth devices include a LED, implementing a key transmission from a Bluetooth headset is a simple engineering task that requires very limited resources, as the LED I/F is already included in the headset. In another embodiment in accordance with the disclosed subject matter, the key is transmitted via an audio I/F from speaker 249 (already exist in Bluetooth headset 240) to microphone 241.
  • the process of paring may be initiated over the primary communication link 299 (marked as 233 in figure 2 A) that is an RF communication link between the Bluetooth antenna 298 and mobile phone antenna 297.
  • the user of the mobile phone wants to initiate a pairing process, the user will enter a certain command (e.g. by usage of keyboard 247 or control unit 246), the mobile phone 243 will transmit a "pairing request" command over RF link 299.
  • the Bluetooth headset 240 receives the "pairing request" command and either automatically transmits a unique key through LED communication link 242 (or through audio communication link 262) or alternatively provides an indication that a paring process was requested, in this case the user of the Bluetooth headset is required to approve/disapprove the transfer of the unique code to the mobile phone 243.
  • Fig. 2D is a visual illustration showing an audio link between a cordless mobile phone system handset (hereinafter "cordless phone handset” or mobile phone handset) and a cordless phone base station in accordance with the disclosed subject matter.
  • Fig. 2D shows a cordless phone handset 251 and a cordless phone base-station 258.
  • cordless phone handset 251 is configured to send a key by using control unit 254.
  • control unit 254 may include a single button for transmitting a predefined fixed key or alternatively, control unit 254 may include a user I/F that enables a user to program a desired key and configure parameters, such as key length etc.
  • Cordless phone base-station 258 is configured to key reception mode by usage of control unit 259.
  • a key transmission is performed over audio link 256 through speaker unit 253 that transmits a predefined, or a programmed audio key that is received in microphone 257 in cordless phone base-station 258.
  • cordless portable handset devices include a speaker unit 253, implementing a key transmission from a cordless phone handset is a simple engineering task that requires very limited resources, as the speaker unit is already included in the cordless phone handset.
  • the process of paring may be initiated over the primary communication link 296 (marked as 233 in figure 2 A) that is an RF communication link between the cordless phone handset antenna 295 and cordless phone base- station antenna 294.
  • the cordless phone base- station 258 will transmit a "pairing request" command over RF link 296.
  • the cordless portable handset 251 receives the "pairing request" command and either automatically transmits a unique key through LED communication link 256 or alternatively provides an indication that a paring process was requested, in this case the user of the cordless phone is required to approve/disapprove the transfer of the unique code to the cordless phone base-station 258.
  • Fig.3 shows a flowchart 300 describing the steps of a method for providing secured pairing in accordance with the disclosed subject matter.
  • a central unit e.g. 203 in Fig. 2A
  • a peripheral unit e.g. 213 shown in Fig. 2A
  • Storing a unique key on the peripheral unit can be implemented by numerous means, such as flash memory, VLSI registers, ROM, RAM etc, it is readily understood by a person skilled in the art that electronically storing of a unique key is practically unlimited in length, thus the key may include hundreds bits of data and even more.
  • the unique key may be stored in a programmable memory device, enabling modification of the unique key.
  • a short range communication link interface 231, 285, is established between central control unit 203, 273 and peripheral unit 213 (310), in accordance with the present disclosure, the short range communication link is implemented by usage of existing short range communication link infrastructure.
  • an existing short range communication link infrastructure In many common systems that require secured paring there is an existing short range communication link infrastructure. For example - in a home alarm system there is typically a red LED (Light Emitting Diode) that is the used for indicating that the detector detects an event (presence of new object, movement etc.), the same LED and its driving circuit can be used as a short range communication link infrastructure for establishing a short range communication link between central control unit 203 and peripheral unit 213.
  • red LED Light Emitting Diode
  • central unit there are systems that include a camera that can be also used for implementing a receiving device for providing a short range communication link 231 between central control unit 203 and peripheral unit 213.
  • a camera typically there are LED/light devices that are used for indicating the customer of a new event/notice. The same LED/light device can be used as a short range communication link infrastructure.
  • LED/light devices typically there is typically a LED indicator on the remote control unit (peripheral unit) that can be used as a short range communication link infrastructure. It should be notes that when there is no short range communication link infrastructure at the central unit end, it is still very simple to implement a low cost reception unit.
  • the step of storing the unique key in the peripheral unit (305) may take place after a short range communication link 231 is implemented between central control unit 203 and peripheral unit 213 (310), and even, if a programmable key is used, after the central control unit 203 is configured to enter a key reception mode (315).
  • the central unit e.g. 203 is configured to enter a key reception mode (315) where the central unit is expecting to receive a unique key from the peripheral device via the short range communication link (e.g. 231).
  • the process of pairing is initiated by notifying the peripheral unit on pairing process (pairing request) via the first communication link (318). It should be noted that this step is optional and subject to the existence of two communication links, i.e. a first communication link 233 and a second communication link 231
  • peripheral unit 213 Upon configuration of the central control unit 203 to a key reception mode and setting the peripheral unit 213 to a key transmission mode, peripheral unit 213 transmits a unique key to the central control unit 203 via the short range communication link (320),
  • the short-range communication link is very limited in range the risk of eavesdropping is minimal.
  • the Bluetooth LED transmission is not expected to be noticed beyond the range of one or two meters.
  • the process of pairing can be done when booth devices are hidden from anybody's eyes for example by holding both devices under a table, within a handbag or in any other manner that prevents the possibility of eavesdropping.
  • central control unit 203 When central control unit 203 is configured to key reception mode and peripheral unit 213 is transmitting a unique key, central control unit 203 receives the unique key and records the information (325), thus completing the process of pairing.
  • Section headings are provided for assistance in navigation and should not be considered as necessarily limiting the contents of the section.

Abstract

L'invention porte sur un appareil servant à effectuer un processus d'appariement, lequel appareil comprend : une unité centrale ayant une première interface de liaison de communication à courte portée qui est configurée pour recevoir une clé unique en vue d'un appariement lorsqu'elle est configurée dans un mode de réception de clé ; et au moins une unité périphérique ayant une seconde interface à courte portée configurée pour envoyer une clé unique en vue d'un appariement à ladite unité centrale.
PCT/IL2010/000990 2010-11-28 2010-11-28 Appareil et procédé d'appariement sécurisé en bande latérale WO2012070036A1 (fr)

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Application Number Priority Date Filing Date Title
PCT/IL2010/000990 WO2012070036A1 (fr) 2010-11-28 2010-11-28 Appareil et procédé d'appariement sécurisé en bande latérale

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Application Number Priority Date Filing Date Title
PCT/IL2010/000990 WO2012070036A1 (fr) 2010-11-28 2010-11-28 Appareil et procédé d'appariement sécurisé en bande latérale

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Cited By (6)

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Publication number Priority date Publication date Assignee Title
WO2014093954A3 (fr) * 2012-12-14 2014-08-21 Microsoft Corporation Couplage de dispositifs à l'aide de multiples zones de découverte
WO2014206777A1 (fr) * 2013-06-27 2014-12-31 Gemalto Sa Procédé de fourniture de données secrètes à un dispositif m2m
EP2908496A1 (fr) * 2014-02-14 2015-08-19 Aevoe International Ltd. Système de réseau et procédé pour configurer un système de réseau
DE102015108746B3 (de) * 2015-06-02 2016-09-15 Fm Marketing Gmbh Verfahren zur Kopplung einer Fernbedienung und einem elektronischen Gerät
FR3074990A1 (fr) * 2017-12-12 2019-06-14 Roam Data, Inc Methode d'appairage de terminaux electroniques, terminaux et programme correspondant
DE102020127828A1 (de) 2020-10-22 2022-04-28 Hauni Maschinenbau Gmbh Verfahren zur Kopplung einer Vorrichtung mit einem Endgerät und Anordnung dafür

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EP1239630A2 (fr) * 2001-03-01 2002-09-11 Telefonaktiebolaget L M Ericsson (Publ) Procédé et dispositif pour augmenter la sécurité de services de données sans fil
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Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014093954A3 (fr) * 2012-12-14 2014-08-21 Microsoft Corporation Couplage de dispositifs à l'aide de multiples zones de découverte
US9107028B2 (en) 2012-12-14 2015-08-11 Microsoft Technology Licensing, Llc Coupling devices using multiple discovery zones
US9848283B2 (en) 2012-12-14 2017-12-19 Microsoft Technology Licensing, Llc Coupling devices using multiple discovery zones
WO2014206777A1 (fr) * 2013-06-27 2014-12-31 Gemalto Sa Procédé de fourniture de données secrètes à un dispositif m2m
EP2819446A1 (fr) * 2013-06-27 2014-12-31 Gemalto SA Procédé pour approvisionner un appareil M2M avec une donnée secrète
EP2908496A1 (fr) * 2014-02-14 2015-08-19 Aevoe International Ltd. Système de réseau et procédé pour configurer un système de réseau
DE102015108746B3 (de) * 2015-06-02 2016-09-15 Fm Marketing Gmbh Verfahren zur Kopplung einer Fernbedienung und einem elektronischen Gerät
EP3101637B1 (fr) * 2015-06-02 2020-07-15 fm marketing gmbh Procédé de couplage d'une télécommande et appareil électronique
FR3074990A1 (fr) * 2017-12-12 2019-06-14 Roam Data, Inc Methode d'appairage de terminaux electroniques, terminaux et programme correspondant
EP3499934A1 (fr) * 2017-12-12 2019-06-19 Ingenico Group Méthode d appairage de terminaux électroniques, terminaux et programme correspondant
US11212091B2 (en) 2017-12-12 2021-12-28 Ingenico Inc. Method for pairing electronic terminals, corresponding terminals and program
DE102020127828A1 (de) 2020-10-22 2022-04-28 Hauni Maschinenbau Gmbh Verfahren zur Kopplung einer Vorrichtung mit einem Endgerät und Anordnung dafür

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