US20170323556A1 - Method for creating of an improved rolling code radio control - Google Patents
Method for creating of an improved rolling code radio control Download PDFInfo
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- US20170323556A1 US20170323556A1 US15/510,676 US201515510676A US2017323556A1 US 20170323556 A1 US20170323556 A1 US 20170323556A1 US 201515510676 A US201515510676 A US 201515510676A US 2017323556 A1 US2017323556 A1 US 2017323556A1
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- 238000005096 rolling process Methods 0.000 title claims abstract description 32
- 238000000034 method Methods 0.000 title claims abstract description 23
- 230000005540 biological transmission Effects 0.000 claims description 16
- 238000004891 communication Methods 0.000 claims description 11
- 230000003213 activating effect Effects 0.000 claims description 7
- 238000005516 engineering process Methods 0.000 description 5
- 230000008878 coupling Effects 0.000 description 4
- 238000010168 coupling process Methods 0.000 description 4
- 238000005859 coupling reaction Methods 0.000 description 4
- 230000001939 inductive effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000004913 activation Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000004377 microelectronic Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000002604 ultrasonography Methods 0.000 description 1
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Classifications
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- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
- G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D7/00—Indicating measured values
- G01D7/02—Indicating value of two or more variables simultaneously
- G01D7/04—Indicating value of two or more variables simultaneously using a separate indicating element for each variable
- G01D7/06—Luminous indications projected on a common screen
-
- G—PHYSICS
- G07—CHECKING-DEVICES
- G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
- G07C9/00—Individual registration on entry or exit
- G07C9/00174—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys
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- H04B5/0031—
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
- H04B5/70—Near-field transmission systems, e.g. inductive or capacitive transmission systems specially adapted for specific purposes
- H04B5/72—Near-field transmission systems, e.g. inductive or capacitive transmission systems specially adapted for specific purposes for local intradevice communication
-
- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C2201/00—Transmission systems of control signals via wireless link
- G08C2201/20—Binding and programming of remote control devices
- G08C2201/21—Programming remote control devices via third means
-
- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C2201/00—Transmission systems of control signals via wireless link
- G08C2201/90—Additional features
- G08C2201/93—Remote control using other portable devices, e.g. mobile phone, PDA, laptop
Definitions
- the present invention relates to a method for producing an improved rolling code radio control usable for motorized barriers (doors, entrances, gates, shutters, etc.) or for motor vehicles.
- the invention also relates to a radio control obtained by this method, to an apparatus for creating said radio control and to a system for its configuration.
- Radio operated remote controls for remotely operating any type of user device are known. In order to ensure communication unambiguousness with the user device to be controlled, they are provided with a specific code, which was previously a fixed code, but has latterly been replaced by a rolling code to increase security.
- Adjunct radio controls often have to be created able to communicate with the user device to be controlled, but this operation can be easily achieved using an unset fixed code radio control, however it can be more difficult with an unset rolling code radio control, as this unset radio control has to be provided with a suitable rolling code algorithm which is already in possession of the user device control system and of all other radio controls which already operate with it.
- this new radio control can be created without difficulty, by simply setting the unset radio control, or that particular key of the unset radio control, such as to arrange it to operate with that algorithm chosen from several algorithms which may be present in its memory.
- an adjunct radio control cannot be created by a normal duplication centre, but instead requires the unset radio control to be despatched to its manufacturer to enable this algorithm to be loaded, or to enable that radio control to be replaced by one also containing that algorithm.
- US 2014/0218165 describes a method for programming an unset radio control by an external configuration device able to dialogue with the unset radio control to be programmed by means of a plurality of different transmission modes, such as radiofrequency (RF), infrared (IR), visible light, ultrasound, and by a generic inductive coupling not specified in detail.
- RF radiofrequency
- IR infrared
- visible light visible light
- ultrasound ultrasound
- an object of the invention is to be able to create a rolling code radio control, as adjunct to an original radio control able to operate with a certain user device, starting from an unset radio control without the rolling code algorithm characteristic of that original radio control.
- Another object of the invention is to be able to create this adjunct rolling code radio control without having to materially despatch it to its manufacturer or to other sources in possession of that specific rolling code algorithm.
- Another object of the invention is to create this adjunct rolling code radio control quickly and simply while safeguarding the security of the transmitted data.
- FIG. 1 shows a block diagram of a rolling code radio control according to the invention
- FIG. 2 shows schematically the step of recognizing the rolling code algorithm present in the original radio control, by means of a sniffer
- FIG. 3 shows schematically the step of setting an unset radio control to the rolling code algorithm of an original radio control
- FIG. 4 shows schematically the step of memorizing the said algorithm by the sniffer in an unset radio control.
- the radio control 2 comprises, as does any radio control, a transmitter/receiver section 4 with relative antenna, a control unit 6 with a data memory, a generator 8 of a frequency to be used for operating the control unit 6 , a power supply 10 , one or more control keys 12 , and one or more indicator lights 14 showing that one of these keys has been activated.
- An identification code ID is associated with the radio control in traditional manner.
- radio control is used to signify herein a device used to remotely control a user device, in which the command signals are fed to the user device using radio waves as transmission means.
- the radio control according to the invention also comprises an NFC (near field communication) device 16 . It is traditional, but has never been used as an integral part of a radio control and in particular for the purposes achieved in this specific application.
- NFC near field communication
- control unit 6 with the data memory can be for example of the M24SR family by ST Microelectronics and implement the NFC Forum type 4 TAG and ISO/IEC 14443 Type A protocol.
- the radio control 2 is of rolling code type, meaning that the code transmitted to the user device varies at each use (transmission) on the basis of a certain algorithm memorized in the control unit 6 of the radio control itself.
- the same algorithm is evidently also present in the control system (not shown) of the user device to be controlled by the radio control 2 , such that there is always a biunique variable correspondence between this and the control system.
- the code transmitted by the radio control is generated by a suitable algorithm and corresponds to a synchronism value or to a number which is incremented at each transmission.
- the receiver unit associated with the user device after receiving the code, evaluates it such as to operate the corresponding user device only if this code is greater than the last synchronism value previously received.
- radio control 2 has several control keys 12 , different fixed code or rolling code channels can be associated therewith, these latter in their turn being associated with different algorithms able to establish communication biuniqueness between each key and the control system of the corresponding user device.
- an indicator light 14 can be provided for each key 12 or a number of indicator lights 14 less than the number of keys 12 and different modes of activating the same indicator light for different keys.
- an adjunct radio control of an original radio control 18 needs to be created able to control the same user device with the same rolling code algorithm, the presence of this algorithm must firstly be verified in the unset radio control 20 to be used to create the adjunct radio control and, if this presence is not verified, the unset radio control 20 must be made to acquire this algorithm.
- the original radio control 18 is firstly activated with a sniffer 22 (see FIG. 2 ), i.e. with a passive interception device able to receive by radio from the original radio control 18 the signals emitted thereby and to recognize their characteristics.
- a sniffer 22 i.e. with a passive interception device able to receive by radio from the original radio control 18 the signals emitted thereby and to recognize their characteristics.
- the two radio controls 18 and 20 are brought suitably close to each other to prevent any interception by non-authorized devices.
- the sniffer 22 used according to the invention is also provided with an NFC device, which can be used to transfer to the adjunct radio control the detected transmission characteristics and, if not already present, the operational algorithms.
- the sniffer 22 comprises an NFC module (for example the writer PN532) able to support smartcards of various types deriving from the standard ISO/IEC 14443 Type B (for example, ISO/IEC 18092 NFCIP-1, Felica, Mifare, etc.).
- NFC module for example the writer PN532
- Type B for example, ISO/IEC 18092 NFCIP-1, Felica, Mifare, etc.
- the original radio control 18 is also provided with an NFC device, said communication and setting data transmission between the original radio control 18 and the sniffer 22 can take place suitably via NFC.
- the sniffer 22 is able to recognize the rolling code algorithm, and if the unset radio control 20 already contains the algorithm, the two radio controls 18 and 20 have merely to be brought suitably together ( FIG. 3 ) and be activated for the unset radio control 20 , after receiving via radio the coded signal from the original radio control 18 , to define in its interior the rolling code algorithm and set this up.
- said coded signal can be opportunely transmitted by the original radio control 18 to the unset radio control 20 via NFC once said radio controls have been brought to a sufficient distance apart to enable NFC transmission.
- this algorithm has not been already stored in the unset radio control 20 , according to the invention it acquires it from the sniffer 22 , this operation taking place via the NFC device after the unset radio control 20 has been brought close (at a distance substantially of 3-5 cm) to the sniffer 22 (see FIG. 4 ) and both have been activated by known procedures implemented within them. Subsequently, when that algorithm has been transmitted via NFC by the sniffer 22 and acquired by the memory of the unset radio control 20 , the setting procedure for this or for a particular key thereof takes place in the manner already described for activating the unset radio control 20 and the original radio control 18 maintained close together (see FIG. 3 ).
- the unset radio control 20 When the unset radio control 20 has been set to use that algorithm, it is ready to operate as an adjunct radio control of the original radio control 18 , after its ID has been stored in traditional manner in the user device control system.
- the duplication centre approached by the user to obtain an adjunct radio control must be connected, via internet, for example by means of the sniffer, or a smartphone or a tablet provided with an NFC device, to the unset radio control manufacturer or to another subject possessing all known encryption algorithms, and cause these to transmit the particular algorithm used in the original radio control 18 .
- the sniffer 22 does not possess the rolling code algorithm used in the original radio control 18
- the duplication centre approached by the user to obtain an adjunct radio control must be connected, via internet, for example by means of the sniffer, or a smartphone or a tablet provided with an NFC device, to the unset radio control manufacturer or to another subject possessing all known encryption algorithms, and cause these to transmit the particular algorithm used in the original radio control 18 .
- the sniffer 22 does not possess the rolling code algorithm used in the original radio control 18
- the duplication centre approached by the user to obtain an adjunct radio control must be connected, via internet, for example by means of the sniffer, or a smartphone or a tablet provided with an NFC device, to the unset radio
- the unset radio control 20 can be brought close to the sniffer 22 or to the smartphone or to the tablet provided with the NFC device, i.e. to the apparatus which has downloaded that algorithm from the internet, and in this manner can acquire it via NFC for close communication.
- the setting procedure for the unset radio control or for a particular key thereof follows that already described for activating the unset radio control 20 and the original radio control 18 held close together (see FIG. 3 ) by transmitting the setting signal via radio or NFC.
- NFC technology is particularly secure as it uses simple secure pairing (SSP) and Wi-Fi protected setup (WPS) protocols for communication between the devices.
- SSP simple secure pairing
- WPS Wi-Fi protected setup
- the transmitted data are encrypted by suitable encryption algorithms.
- setting the unset radio control 20 i.e. feeding the starting data to which the algorithm is to be applied, is achieved on the basis of the information fed by the original radio control 18 following its activation.
- the setup data can be fed by the original radio control 18 to the duplicate unset radio control 20 by radio transmission between the two or, preferably, in the case of an original radio control provided with an NFC device, by NFC technology coupling.
- the unset radio control 20 can also be made to acquire not only the rolling code algorithm (as aforedescribed), but also new or different settings, for example to associate new functions with one or more keys 12 , to modify the flashing of the indicator lights 14 , or to differently organize the radio control memory space, etc.
- the sniffer 22 receives, either from the original radio control 18 or as download from the internet, a series of data containing the algorithm to be duplicated or other information regarding the manner in which the radio control must behave when a specific key is pressed.
- the sniffer 22 then carries out the following operations:
- the management of the physical transmission protocol, congruence monitoring and management of the low level dialogue are suitably carried out directly by the communication chips NFC M24SR of the unset radio remote control and PN532 of the sniffer.
- the data transmitted via NFC by the sniffer 22 are written directly into the space of the memory of the unset radio control 20 ; in particular, this operation is managed directly by the NFC M24SR communication chip of the radio control 20 , and no intervention is required by this latter, which hence remains inactivated.
- the unset radio control 20 is then activated and accesses its memory contents via the ISO-14443A protocol. Hence in this manner, the radio control 20 reads the received NFC structure and extrapolates the useful encrypted data therefrom using the parameters present in the structure header. Finally, the radio control 20 decrypts the content of the encrypted data to use them to finally eliminate the previously received encrypted data previously received, which are no longer required, so making them unavailable to any unauthorized reading attempt.
- the data to be duplicated is transferred by the original radio control 18 to the sniffer 22 by reception of the radio transmission activated by pressing pushbuttons or, if the original radio control 18 is provided with NFC, it follows substantially the same but inverted procedure.
- the present invention differs from US 2014/0218165 in that, from the multiple different transmission modes provided in this latter, it specifically selects only NFC technology, which is a particular type of inductive coupling which requires strict proximity between the transmitter and receiver, and in addition operates at a specific frequency (equal to 13.56 MHz) and with a specific protocol (NFC Forum Type 4, ISO/IEC14443), which is able to operate with the unset radio control not powered.
- US 2014/0218165 comprises exclusively the external programming/configuration devices and the unset radio control to be programmed, without mentioning in any way the need to have available the original radio control for use in setting up the unset radio control.
- US 2014/0218165 does not provide for the sniffer to acquire from the original radio control the algorithm to be duplicated to then transmit it to the unset radio control, neither does it provide for setting the unset radio control by using the original radio control.
- US 2014/0277805 describes a device using NFC technology to control domestic user devices, whereas the present invention specifically relates to a rolling code radio control using radio frequency to control a particular user device.
- NFC communication is used only during the step of configuring/programming the unset radio control, and not during its use.
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Abstract
Description
- The present invention relates to a method for producing an improved rolling code radio control usable for motorized barriers (doors, entrances, gates, shutters, etc.) or for motor vehicles.
- The invention also relates to a radio control obtained by this method, to an apparatus for creating said radio control and to a system for its configuration.
- Radio operated remote controls for remotely operating any type of user device are known. In order to ensure communication unambiguousness with the user device to be controlled, they are provided with a specific code, which was previously a fixed code, but has latterly been replaced by a rolling code to increase security.
- Adjunct radio controls often have to be created able to communicate with the user device to be controlled, but this operation can be easily achieved using an unset fixed code radio control, however it can be more difficult with an unset rolling code radio control, as this unset radio control has to be provided with a suitable rolling code algorithm which is already in possession of the user device control system and of all other radio controls which already operate with it.
- Consequently, if this unset radio control possesses this algorithm, this new radio control can be created without difficulty, by simply setting the unset radio control, or that particular key of the unset radio control, such as to arrange it to operate with that algorithm chosen from several algorithms which may be present in its memory. In contrast, if the unset radio control does not possess this algorithm, an adjunct radio control cannot be created by a normal duplication centre, but instead requires the unset radio control to be despatched to its manufacturer to enable this algorithm to be loaded, or to enable that radio control to be replaced by one also containing that algorithm.
- US 2014/0218165 describes a method for programming an unset radio control by an external configuration device able to dialogue with the unset radio control to be programmed by means of a plurality of different transmission modes, such as radiofrequency (RF), infrared (IR), visible light, ultrasound, and by a generic inductive coupling not specified in detail.
- These transmission modes, including the generic inductive coupling, generally operate when the transmitter and receiver are at a certain distance apart (greater than 10 cm). This is a drawback in security terms as it gives rise to a high and undesirable risk of interception of the codes (which represent private personal information) transmitted by the external configuration device to the unset radio control.
- Faced with this state of the art, an object of the invention is to be able to create a rolling code radio control, as adjunct to an original radio control able to operate with a certain user device, starting from an unset radio control without the rolling code algorithm characteristic of that original radio control.
- Another object of the invention is to be able to create this adjunct rolling code radio control without having to materially despatch it to its manufacturer or to other sources in possession of that specific rolling code algorithm.
- Another object of the invention is to create this adjunct rolling code radio control quickly and simply while safeguarding the security of the transmitted data.
- These and other objects which will be apparent from the ensuing description are attained according to the invention by a method as defined in claim 1, by a radio control as defined in claim 11, by an apparatus for creating the radio control as defined in claim 15, and by a system for configuring the radio control as defined in
claim 16. - The present invention is further clarified hereinafter in terms of a preferred embodiment with reference to the accompanying drawings, in which:
-
FIG. 1 shows a block diagram of a rolling code radio control according to the invention, -
FIG. 2 shows schematically the step of recognizing the rolling code algorithm present in the original radio control, by means of a sniffer, -
FIG. 3 shows schematically the step of setting an unset radio control to the rolling code algorithm of an original radio control, and -
FIG. 4 shows schematically the step of memorizing the said algorithm by the sniffer in an unset radio control. - As can be seen from the figures, the
radio control 2 according to the invention comprises, as does any radio control, a transmitter/receiver section 4 with relative antenna, acontrol unit 6 with a data memory, agenerator 8 of a frequency to be used for operating thecontrol unit 6, apower supply 10, one ormore control keys 12, and one ormore indicator lights 14 showing that one of these keys has been activated. An identification code ID is associated with the radio control in traditional manner. - It should be noted that the term “radio control” is used to signify herein a device used to remotely control a user device, in which the command signals are fed to the user device using radio waves as transmission means.
- In contrast to traditional radio controls, the radio control according to the invention also comprises an NFC (near field communication)
device 16. It is traditional, but has never been used as an integral part of a radio control and in particular for the purposes achieved in this specific application. - In greater detail, the
control unit 6 with the data memory can be for example of the M24SR family by ST Microelectronics and implement the NFCForum type 4 TAG and ISO/IEC 14443 Type A protocol. - The
radio control 2 according to the invention is of rolling code type, meaning that the code transmitted to the user device varies at each use (transmission) on the basis of a certain algorithm memorized in thecontrol unit 6 of the radio control itself. The same algorithm is evidently also present in the control system (not shown) of the user device to be controlled by theradio control 2, such that there is always a biunique variable correspondence between this and the control system. - For example, the code transmitted by the radio control is generated by a suitable algorithm and corresponds to a synchronism value or to a number which is incremented at each transmission. Hence the receiver unit associated with the user device, after receiving the code, evaluates it such as to operate the corresponding user device only if this code is greater than the last synchronism value previously received.
- If the
radio control 2 hasseveral control keys 12, different fixed code or rolling code channels can be associated therewith, these latter in their turn being associated with different algorithms able to establish communication biuniqueness between each key and the control system of the corresponding user device. In this case anindicator light 14 can be provided for eachkey 12 or a number ofindicator lights 14 less than the number ofkeys 12 and different modes of activating the same indicator light for different keys. - If an adjunct radio control of an
original radio control 18 needs to be created able to control the same user device with the same rolling code algorithm, the presence of this algorithm must firstly be verified in theunset radio control 20 to be used to create the adjunct radio control and, if this presence is not verified, theunset radio control 20 must be made to acquire this algorithm. - To effect this operation the
original radio control 18 is firstly activated with a sniffer 22 (seeFIG. 2 ), i.e. with a passive interception device able to receive by radio from theoriginal radio control 18 the signals emitted thereby and to recognize their characteristics. Preferably to effect this operation, the tworadio controls - Consequently, in contrast to traditional sniffers, the
sniffer 22 used according to the invention is also provided with an NFC device, which can be used to transfer to the adjunct radio control the detected transmission characteristics and, if not already present, the operational algorithms. - In greater detail, the
sniffer 22 comprises an NFC module (for example the writer PN532) able to support smartcards of various types deriving from the standard ISO/IEC 14443 Type B (for example, ISO/IEC 18092 NFCIP-1, Felica, Mifare, etc.). - If the
original radio control 18 is also provided with an NFC device, said communication and setting data transmission between theoriginal radio control 18 and thesniffer 22 can take place suitably via NFC. - In creating the adjunct radio control with rolling code, distinction must be made between the case in which the algorithm of the
original radio control 18 is already stored in thesniffer 22, and the case in which this is not so. - If this algorithm has already been stored in the
sniffer 22, on activating theoriginal radio control 18, thesniffer 22 is able to recognize the rolling code algorithm, and if theunset radio control 20 already contains the algorithm, the tworadio controls FIG. 3 ) and be activated for theunset radio control 20, after receiving via radio the coded signal from theoriginal radio control 18, to define in its interior the rolling code algorithm and set this up. - If the
original radio control 18 is also already provided with an NFC device, said coded signal can be opportunely transmitted by theoriginal radio control 18 to theunset radio control 20 via NFC once said radio controls have been brought to a sufficient distance apart to enable NFC transmission. - If instead this algorithm has not been already stored in the
unset radio control 20, according to the invention it acquires it from thesniffer 22, this operation taking place via the NFC device after theunset radio control 20 has been brought close (at a distance substantially of 3-5 cm) to the sniffer 22 (seeFIG. 4 ) and both have been activated by known procedures implemented within them. Subsequently, when that algorithm has been transmitted via NFC by thesniffer 22 and acquired by the memory of theunset radio control 20, the setting procedure for this or for a particular key thereof takes place in the manner already described for activating theunset radio control 20 and theoriginal radio control 18 maintained close together (seeFIG. 3 ). - When the
unset radio control 20 has been set to use that algorithm, it is ready to operate as an adjunct radio control of theoriginal radio control 18, after its ID has been stored in traditional manner in the user device control system. - If instead the
sniffer 22 does not possess the rolling code algorithm used in theoriginal radio control 18, the duplication centre approached by the user to obtain an adjunct radio control must be connected, via internet, for example by means of the sniffer, or a smartphone or a tablet provided with an NFC device, to the unset radio control manufacturer or to another subject possessing all known encryption algorithms, and cause these to transmit the particular algorithm used in theoriginal radio control 18. Naturally all these apparatus connectable to the internet must be provided with applications suitable for the purpose. - Subsequently the
unset radio control 20 can be brought close to thesniffer 22 or to the smartphone or to the tablet provided with the NFC device, i.e. to the apparatus which has downloaded that algorithm from the internet, and in this manner can acquire it via NFC for close communication. - Finally, again in this case, the setting procedure for the unset radio control or for a particular key thereof follows that already described for activating the
unset radio control 20 and theoriginal radio control 18 held close together (seeFIG. 3 ) by transmitting the setting signal via radio or NFC. - NFC technology is particularly secure as it uses simple secure pairing (SSP) and Wi-Fi protected setup (WPS) protocols for communication between the devices.
- Advantageously, to further increase security in all the aforesaid transmissions using NFC technology, the transmitted data are encrypted by suitable encryption algorithms.
- In all the aforedescribed cases, setting the
unset radio control 20, i.e. feeding the starting data to which the algorithm is to be applied, is achieved on the basis of the information fed by theoriginal radio control 18 following its activation. In this respect, the setup data can be fed by theoriginal radio control 18 to the duplicateunset radio control 20 by radio transmission between the two or, preferably, in the case of an original radio control provided with an NFC device, by NFC technology coupling. - According to the present invention the
unset radio control 20 can also be made to acquire not only the rolling code algorithm (as aforedescribed), but also new or different settings, for example to associate new functions with one ormore keys 12, to modify the flashing of theindicator lights 14, or to differently organize the radio control memory space, etc. - As non-limiting explanation and exemplification, a presentation is given hereinafter of the detailed sequence of steps according to the invention for configuring the
unset radio control 20 by means of thesniffer 22. - Initially, the
sniffer 22 receives, either from theoriginal radio control 18 or as download from the internet, a series of data containing the algorithm to be duplicated or other information regarding the manner in which the radio control must behave when a specific key is pressed. - The
sniffer 22 then carries out the following operations: -
- it encrypts the data bank to be despatched,
- it creates, in accordance with the specific NFCs, a header valid for the type of data to be dispatched,
- it associates the encrypted data bank with the NFC header such as to obtain an NFC data structure compatible with the
specific Forum Type 4 NFC, - it inserts the thus created NFC structure into an ISO14443A structure,
- it opens an NFC connection and despatches everything to the
unset radio control 20.
- The management of the physical transmission protocol, congruence monitoring and management of the low level dialogue are suitably carried out directly by the communication chips NFC M24SR of the unset radio remote control and PN532 of the sniffer.
- The data transmitted via NFC by the
sniffer 22 are written directly into the space of the memory of theunset radio control 20; in particular, this operation is managed directly by the NFC M24SR communication chip of theradio control 20, and no intervention is required by this latter, which hence remains inactivated. - The
unset radio control 20 is then activated and accesses its memory contents via the ISO-14443A protocol. Hence in this manner, theradio control 20 reads the received NFC structure and extrapolates the useful encrypted data therefrom using the parameters present in the structure header. Finally, theradio control 20 decrypts the content of the encrypted data to use them to finally eliminate the previously received encrypted data previously received, which are no longer required, so making them unavailable to any unauthorized reading attempt. - The data to be duplicated is transferred by the
original radio control 18 to thesniffer 22 by reception of the radio transmission activated by pressing pushbuttons or, if theoriginal radio control 18 is provided with NFC, it follows substantially the same but inverted procedure. - Essentially, the present invention differs from US 2014/0218165 in that, from the multiple different transmission modes provided in this latter, it specifically selects only NFC technology, which is a particular type of inductive coupling which requires strict proximity between the transmitter and receiver, and in addition operates at a specific frequency (equal to 13.56 MHz) and with a specific protocol (
NFC Forum Type 4, ISO/IEC14443), which is able to operate with the unset radio control not powered. - This is particularly advantageous in that transmission is made more secure, avoiding the risk of interception by sniffer devices used by hackers.
- Moreover, the system of US 2014/0218165 comprises exclusively the external programming/configuration devices and the unset radio control to be programmed, without mentioning in any way the need to have available the original radio control for use in setting up the unset radio control. In particular, US 2014/0218165 does not provide for the sniffer to acquire from the original radio control the algorithm to be duplicated to then transmit it to the unset radio control, neither does it provide for setting the unset radio control by using the original radio control.
- in contrast, US 2014/0277805 describes a device using NFC technology to control domestic user devices, whereas the present invention specifically relates to a rolling code radio control using radio frequency to control a particular user device. In particular, according to the present invention, NFC communication is used only during the step of configuring/programming the unset radio control, and not during its use.
Claims (14)
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
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ITVE2014A000051 | 2014-09-19 | ||
ITVE2014A0051 | 2014-09-19 | ||
ITVE20140051 | 2014-09-19 | ||
PCT/IB2015/057154 WO2016042509A1 (en) | 2014-09-19 | 2015-09-17 | Method for creating of an improved rolling code radio control |
Publications (2)
Publication Number | Publication Date |
---|---|
US9812005B1 US9812005B1 (en) | 2017-11-07 |
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WO2004077729A2 (en) * | 2003-02-21 | 2004-09-10 | Johnson Controls Technology Company | Trainable remote controller and method for determining the frequency of a learned control signal |
WO2005091240A2 (en) * | 2004-03-16 | 2005-09-29 | Johnson Controls Technology Company | System and method of training in a transmit/receive system |
US8384513B2 (en) * | 2006-01-03 | 2013-02-26 | Johnson Controls Technology Company | Transmitter and method for transmitting an RF control signal |
US8000667B2 (en) * | 2006-02-03 | 2011-08-16 | Johnson Controls Technology Company | System and method for compensating for modulation induced frequency shift during transmission of a radio frequency signal |
US20070268360A1 (en) * | 2006-05-19 | 2007-11-22 | Sony Ericsson Mobile Communications Ab | Remote control programming system and method |
US8198988B2 (en) * | 2007-11-16 | 2012-06-12 | Sony Corporation | Secure link between controller and device |
US10115255B2 (en) * | 2013-02-07 | 2018-10-30 | Ikeyless, Llc | Method and apparatus for implementing multi-vendor rolling code keyless entry systems |
US10135629B2 (en) * | 2013-03-15 | 2018-11-20 | Lutron Electronics Co., Inc. | Load control device user interface and database management using near field communication (NFC) |
AU2015353709A1 (en) * | 2014-11-26 | 2017-06-15 | Master Lock Company Llc | EAC system with plurality of different algorithm/operand pairs having different functionality |
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EP3195285B1 (en) | 2018-01-10 |
ES2664354T3 (en) | 2018-04-19 |
SI3195285T1 (en) | 2018-04-30 |
PT3195285T (en) | 2018-03-22 |
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