135 results about "Relay attack" patented technology

An apparatus and method is provided for identifying unauthorized access to a vehicle having a keyless-passive entry system. An interrogation signal is broadcast from a vehicle based transmission device. The interrogation signal includes a first pulse transmitted at a first amplitude and a second pulse transmitted at a second amplitude where the second amplitude is greater than the first amplitude by at least a predetermined difference threshold. The interrogation signal is received by a portable communication device. A determination is made whether the second amplitude of the second pulse is greater than the first amplitude of the first pulse by a predetermined difference threshold. A determination is made that the interrogation signal is an authorized interrogation signal in response to the determination that the interrogation signal includes the first pulse transmitted at the first amplitude following by the second pulse transmitted at the second amplitude where the second amplitude is greater than the first amplitude by at least a predetermined difference threshold.

A system for preventing a relay attack on a vehicle is provided. The system includes a base unit positioned in the vehicle and operably connected to at least one vehicle system. The base unit is configured to obtain position information of the base unit. The system further includes a portable operating unit configured to obtain and transmit position information of the portable operating unit to the base unit. The base unit determines the position of the portable operating unit relative to the base unit and selectively controls operation of the at least one vehicle system based on the determination of the position of the portable operating system relative to the base unit.

The invention discloses a vehicle-inside one-time-one-password communication method based on ECU identity concealment. The method comprises the following steps: 1) creating a system model; 2) prior to the one-time-one-ciphering by ECU, registering information in the gateway database; 3) using the operation behaviors to the vehicle by the intelligent ECU as the media to generate a coupling effect between vehicle mounted power supply systems so that the vehicle mounted power supply voltage change possess the Markov characteristics and that a true random number is generated to serve as the session key; 4) updating in a fixed time the session key between the ECUs in need of communication so as to prevent replay attacks; and 5) according to the obtained session key, using the attributes of the ECU in the database, creating one-time-one-ciphering data communications based on the ECU ciphered text attributes to ensure the secure communications of ECU inside the vehicle. According to the invention, through the utilization of the stochastic behavior of the power supply voltage inside the vehicle to generate a session key, it is possible to effectively avoid the problem with the tampering and the forgery of information. Through the combination of the vehicle speed unit with the steering wheel, the 500ms cycle dynamic state generates the vehicle speed and serves as the session key for the ECU in order to prevent relay attacks.

The invention provides a portable device, a communication device, and a communication system with high prevention and capable of determining whether relay attack is performed. The communication system (100) includes: a vehicle (1)-mounted communication device (20) and a portable device (10). The communication device (20) includes: a vehicle transmission unit (22) which transmits a plurality of first signals to the portable device, and a vehicle reception unit (21) which receives a second signal transmitted from the portable device. The portable device (10) includes: a portable device reception unit (11) which receives the first signals, a portable device controller (15) which detects signal intensities of the received first signals, and which compares the signal intensities of the first signals, and a portable device transmission unit (12) which transmits the second signal according to control of the portable device controller. The portable device controller (15) sets an output value of the second signal to a predetermined value when a difference between the compared signal intensities of the first signals is equal to or less than a threshold.

The invention discloses a system and method of a non-contact IC card for defending a relay attack, and relates to the field of information security. The system comprises the non-contact IC card and a card reader. The card reader sends three-time magnetic field intensity information to the non-contact IC card and records sending time, the non-contact IC card detects actual magnetic field intensity of the card reader for three times, and the actual magnetic field intensity is compared with the received corresponding magnetic field intensity to judge whether the non-contact IC card is under attack or not; meanwhile, the card reader calculates the received time difference of the non-contact IC card returning to a normal instruction, the time difference is compared with a corresponding magnetic field intensity change time difference to judge whether the non-contact IC card is under the attack or not, and when the non-contact IC card is under the attack, the non-contact IC card sends out an abnormal instruction, and the card reader stops communicating and sends out an alerting signal. According to the system and method, the non-contact IC card can be effectively prevented from being subjected to the relay attack, safety of the non-contact IC card is guaranteed, and the system is wide in application range, low in cost and convenient to use.

A method of secure access through a wireless connection is provided. The method includes detecting availability of an access control wirelessly by a mobile device. A predicted intent is determined of a user of the mobile device to have the access control open a lock. The method determines whether a relay attack is detected. Based on detection of the relay attack, a prompt to confirm an intent of the user of the mobile device to have the access control open a lock is determined. Based on non-detection of the relay attack, a lock actuator is activated through the access control to open the lock responsive to a credential based on affirmatively confirming the intent or the predicted intent.

A system for preventing a relay attack on a vehicle is provided. The system includes a base unit positioned in the vehicle and operably connected to at least one vehicle system. The base unit is configured to obtain position information of the base unit. The system further includes a portable operating unit configured to obtain and transmit position information of the portable operating unit to the base unit. The base unit determines the position of the portable operating unit relative to the base unit and selectively controls operation of the at least one vehicle system based on the determination of the position of the portable operating system relative to the base unit.

A proximity check ensures that a card is physically close to the reader device in order to inhibit relay attacks. The proximity check makes relay attacks more difficult because an additional channel must be intercepted and / or spoofed or relayed. This solution can be used for any kind of short-range communication, including near field communications (NFC).

An electric power generator is particularly suitable for providing back-up power to sites with multiple power requirements. This generator comprises a rack having multiple module bays; at least one power conversion module is mounted in one of the bays and is electrically coupled to a fuel cell stack also mounted in the rack or located remote from the rack. The power conversion module converts the voltage level and / or current type of some of the electricity produced by the stack such that the generator can simultaneously output electricity at multiple voltage levels and / or current types. The rack can be a standardized nineteen relay rack, making the generator relatively compact and compatible with sites configured accept such racks.

The present invention relates to a method for preventing a relay-attack on a smart key system, and in particular, provides an advantage of preventing a vehicle and equipment stored inside the vehicle from being stolen by using predetermined information transmitted and received when the SMK UNIT of the vehicle and a FOB Key wirelessly communicate with each other and enabling a holder of the FOB Key to make the relay-attack once the holder secures visibility from the vehicle.

The embodiments of the invention relate to the field of authentication, and disclose an authentication method and equipment, electronic equipment and a storage medium. In the authentication method andequipment, the electronic equipment and the storage medium, the authentication method includes the steps that a first distance is acquired, and the first distance is a distance between first equipment and equipment which directly transmits a first authentication request to the first equipment, wherein the first authentication request is originally generated and sent by second equipment; a seconddistance is acquired, and the second distance is a distance between the second equipment and equipment which directly transmits a second authentication request to the second equipment, wherein the second authentication request is originally generated and sent by the first equipment; and according to the first distance and the second distance, whether the authentication is successful or not is determined. Bidirectional positioning is carried out through the first equipment and the second equipment, the first distance is compared with the second distance, according to the comparison result, whether the authentication is successful or not is determined, the security of the first equipment is ensured, and the relay attack is effectively prevented.

The invention discloses a relay method for service data and a relay node system. The relay node system comprises a relay control entity, a relay bearing entity and a quality of service measurement entity, wherein the relay control entity is used for receiving a relay request, selecting the relay bearing entity for a relay task requested by the relay request, requesting the relay bearing entity to execute the relay task and acquiring quality of service measurement information from the quality of service measurement entity; the relay bearing entity is used for executing the relay task and relaying the service data related to the relay task; and the quality of service measurement entity is used for executing a quality of service measurement task and reporting the obtained quality of service measurement information to the relay control entity. By the method and the system, each function entity of a relay node can be flexibly configured.