115 results about "Anti spoofing" patented technology

A method and system is disclosed for preventing an address spoofing based attack from a private network. The private network has at least one host and at least one router connected therein for transporting at least one packet. An anti-spoofing filter is implemented in each interface of every router. When a packet is received on the interface, the filter determines whether the packet is address spoofed by comparing its source physical address derived from the received packet with expected physical address derived from interface IP address, a subnet mask of the interface, an ARP cache of the interface and a list of physical addresses of neighboring routers formed a priori If the packet is determined to be address spoofed, the received packet is discarded by the filter on the interface.

An improved fingerprint sensing device is provided with multiple sensing apparatus, two or more of which operating on different sensing principles. For example, a capacitive sensor may be integrally formed with an optical sensor on a single substrate. Ideally, the multiple sensing apparatus are disposed such that they may sense nearly identical portions of a fingerprint simultaneously. A primary sensor may be employed to establish the identity of a user based on a fingerprint, while a secondary sensor may be employed to establish that the fingerprint is part of a live human (anti-spoofing). Integrated light sources may be provided to drive an optical sensor. The light sources may also provide visual cues for usage, and enhance the aesthetics of the device.

Message spoofing is detected by an anti-spoofing application comparing a trusted switch address (i.e., corresponding to an originating switch having processed an incoming message) to an “affiliated” address (i.e., corresponding to a switch serving the location of the identified sender). Message spoofing is detected if the trusted address differs from the affiliated address.

Technologies are presented herein in support of a system and method for performing fingerprint recognition. Embodiments of the present invention concern a system and method for capturing a user's biometric features and generating an identifier characterizing the user's biometric features using a mobile device such as a smartphone. The biometric identifier is generated using imagery captured of a plurality of fingers of a user for the purposes of authenticating/identifying the user according to the captured biometrics and determining the user's liveness. The present disclosure also describes additional techniques for preventing erroneous authentication caused by spoofing. In some examples, the anti-spoofing techniques may include capturing one or more images of a user's fingers and analyzing the captured images for indications of liveness.

Technologies are presented herein in support of a system and method for performing fingerprint recognition. Embodiments of the present invention concern a system and method for capturing a user's biometric features and generating an identifier characterizing the user's biometric features using a mobile device such as a smartphone. The biometric identifier is generated using imagery captured of a plurality of fingers of a user for the purposes of authenticating/identifying the user according to the captured biometrics and determining the user's liveness. The present disclosure also describes additional techniques for preventing erroneous authentication caused by spoofing. In some examples, the anti-spoofing techniques may include capturing one or more images of a user's fingers and analyzing the captured images for indications of liveness.

Disclosed is an on-board backup and anti-spoofing GPS (“OBASG”) system for navigating a vehicle through an environment with a GPS receiver. The GPS receiver is configured to receive GPS signals within the environment where the GPS signals may suffer a GPS outage or are unreliable within the environment. In general, the OBASG includes a GPS block-chain recorder, a block-chain storage module, an anti-spoofing module, and a backup navigation module.

The invention provides a countercheck method for automatically identifying a speaker aiming to voice deception, which is a voice anti-spoofing technology based on a method combining various features and a plurality of sub-systems. According to the invention, the serial features of the posterior probability of a phoneme in the phonological level and the MFCC features of voice level or MFDCC features of phase level are combined, thus the performance of the system is significantly enhanced. By combining the provided i-vector sub-system and OpenSMILE (open Speech and Music Interpretation by Large Space Extraction criterion containing voice and rhythmic information, the final presentation of the system is further enhanced. To a back-end model, the development datum are used; and under the situation of knowing deceptive attacks, a two-level support vector machine has better performance compared with one-level cosine similarity or PLDA evaluations, while the one-level evaluation approach has better robustness under the situation without seeing the test datum and knowing the deceptive conditions.

The invention provides a GNSS (global navigation satellite system) anti-spoofing loop tracking method based on inertial information aiding and parameter estimation. The GNSS anti-spoofing loop tracking method comprises the following steps of performing exploring study on the application of a signal estimation algorithm in an anti-spoofing field; utilizing a signal estimation algorithm to estimate a similar GNSS signal, identifying by aiding with the inertial information, and integrating the information to distinguish a spoofing signal and a true signal. The signal estimation algorithm is aided by the inertial navigation information, so as to propose a new tracking loop structure, thereby realizing double advantages of more reference for the tracking loop, and relative independence of the GNSS and an inertial navigation system. The GNSS anti-spoofing loop tracking method has the advantages that one set of complete anti-spoofing plan integrating signal estimation and detection, spoofing signal inhibition and true signal tracking is realized, and the spoofing interference can be inhibited to ensure the accuracy and stability of a receiver in working.

The invention discloses an anti-spoofing-attack method and system applied to a satellite navigation system. The method comprises the following steps: S1) capturing and processing satellite signals, and obtaining code Doppler information and carrier wave Doppler information of the satellite signals; S2) carrying out consistency detection on the code Doppler information and the carrier wave Doppler information to obtain a consistency comparison result; and S3) judging whether the satellite signals are spoofing signals, sending alarm information if the satellite signals are spoofing signals, and sending current code phase position and carrier wave frequency information to a preset tracking loop if the satellite signals are not spoofing signals. The method and system in the invention not only can judge whether the spoofing signals exist in the received signals, but also can judge which signals are the spoofing signals and which signals are real signals, that is, the second layer can be reached; and the method and system have spoofing signal suppression function and also have strong anti-spoofing capability.

The invention discloses a false detection method of a satellite navigation signals. The false detection method of the satellite navigation signals can record the acquisition time of a current ephemeris by recording the updating time of a reference ephemeris, and calculates the time interval between the acquisition time of the current ephemeris and the updating time of the reference ephemeris so as to judge whether the time interval conforms to the updated frequency value of a broadcast ephemeris, thus achieving the false detection of the satellite navigation signals. The invention further discloses a satellite navigation positioning receiver. By means of the above-mentioned ways, anti-spoofing ability of the receiver is reinforced. In addition, the false detection method of the satellite navigation signals and the satellite navigation positioning receiver have the advantages that low cost is achieved, expansibility is strong and the like.

The invention relates to a method for realizing a distributed ADS-B passive positioning anti-spoofing function on basis of opportunity reference sources. The method comprises the following steps of: (1) carrying out track processing by an ADS-B system and eliminating interference information and screening wrong messages; (2) carrying out relative position goodness fit verification by the ADS-B system; (3) selecting an opportunity reference source suitable for multi-site synchronization and high in local arrival time TOA measurement accuracy from a trusted group; (4) calculating a local arrivaltime TOA synchronization correction value of each station by using position information in messages of the opportunity reference source and position information of each station; (5) carrying out passive positioning on ADS-B target sources through an arrival time difference; and (6) detecting and reporting spoofing ADS-B source. By adoption of the method, the functions of spoofing ADS-B message detection and spoofing source positioning can be realized at the same time through receiving ADS-B signals by a plurality of ADS-B receivers; and the method has the characteristics of being good in detection performance and low in system and realizing spoofing source positioning.

A mobile App using biometric encryption and decryption for privacy and security having both authentication and recognition functions. It utilizes the built-in camera of the mobile device to provide facial images for authentication purposes. It further includes a secured data communication system for conveniently sending and receiving data on the mobile devices. The secured data communication system also utilizes biometric encryption and decryption technology for granting permissions to access the data communication system. The biometric encryption is implemented by using a selective biometric feature and optimized biometric feature detection and tracking methods. Different biometric feature authentication methods are optimized for use on various mobile platforms, such as, Android, iOS, Windows and others. Data encryption and decryption are achieved by using selected biometric feature vectors as cryptographic keys. The biometric data encryption system further includes liveness detection module with anti-spoofing features to ensure the encryption and decryption processes only accept biometric features from a live person conveniently without the user's intervention. Alternative authentication method is provided if the biometric feature authentication module fails to recognize the valid user, or fails in the liveness detection module in order to maintain privacy and security of the data in the mobile device.

The invention discloses a system and a method of anti-spoofing notification based on cell-phone message contents. The method includes the steps: (A) acquiring short messages through a short message module, sending the short messages to a key information extraction module to extract key information from the short messages, and sending the key information to a CPU (central processing unit); (B) acquiring the short messages and the key information by the CPU, and sending the key information to a micro processor; (C) analyzing and processing the acquired key information by the micro processor, and generating notification information to send to the CPU; (D) inserting acquired notification information into the corresponding short messages by the CPU, displaying the short messages on a display screen. Contents of the received short message are analyzed by the anti-spoofing notification system; relevant key information of remittance, transfer and accounts of the contents are extracted; the key information is analyzed and processed by the micro processor; notification information such as 'Caution! Fraud!' is generated and inserted into the short messages by the CPU and then displayed on the display screen. By the aid of the system and the method of anti-spoofing notification, users can be visually and clearly notified and protected from frauds, when they receive the short messages of frauds and the like.

A biometric device for detecting biological tissue based upon ratiometric measurements of metabolic and/or biochemical intermediates is provided in which a radiation source (103) is electromagnetically coupled to a target region (125). A radiation sensor (155) receives emission signals (128) from the target region as a result of emitted radiation (121) interacting with the target region. A CPU (167) receives a signal from the sensor, and provides a biometric output signal based upon the presence of live, healthy tissue versus sham or dead tissue. Optionally, a conventional, non-metabolism, non-biochemical-based biometric sensor can be incorporated into the present invention, and the biometric output signal is then a result of both the metabolism- and/or biochemical based and non-metabolism non-biochemical-based biometric determinations. A method of performing this biometric analysis is also described.

The present application provides a method and apparatus for preventing spoofing in a VXLAN, which relate to the field of communication technology and are used to solve the problem that a part of VETPin the prior art cannot recognize spoofing, thereby forwarding data to an attacker. The method comprises the following steps of: receiving an ARP message sent by a virtual machine VM. The ARP messagecarries a first IP address and a first MAC address. Obtaining an outbound port in a forwarding table entry whose destination MAC address is a first MAC address; sending a probe request message to thesecond VTEP device. The second VTEP device is a VTEP device connected with an outlet port in a forwarding table item. The probe request message is used for instructing the second VTEP device to send an ARP request for the first IP address through the physical port in the local MAC forwarding table entry matching the first MAC address; upon receiving the probe response message for the probe requestmessage sent by the second VTEP device, the local MAC forwarding table is refused to be updated according to the ARP message. This application is intended to prevent spoofing in VXLANs.