Abstract: Described herein are systems and methods for obfuscating variants of content segments. Variants of content segments can be used to encode an identifying sequence in a transmission of content. The duration parameter of a manifest entry can be modified by a random offset. The data size of variants of a given content segment can be equalized by adding one or more portions of data to one or more of the variants.

Abstract: Methods, apparatus, systems and articles of manufacture are disclosed for delivering extended payloads with composite watermarks. Examples disclosed herein embed a first watermark into a media stream in accordance with a first watermark technology, where the first watermark includes a first indicator bit and a first payload. Disclosed examples also embed a second watermark into the media stream in accordance with a second watermark technology, where the second watermark includes a second indicator bit and a second payload. In some disclosed examples, the first indicator bit and the second indicator bit are to indicate whether the first payload and the second payload are to be combined when the first watermark and the second watermark are decoded.

Abstract: A method includes generating an encoded and secured message comprising at least two parts, and transmitting the at least two parts of the encoded and secured message over at least two beam pair links (BPLs) associated with the first device and the second device, each part of the at least two parts being transmitted over a single BPL.

Abstract: A device may receive digital content and may process the digital content, with at least one of an optimization-based poisoning model or a statistical-based poisoning model, to generate at least one of first poisoning data or second poisoning data, respectively. The device may generate new digital content based on the digital content and the at least one of the first poisoning data or the second poisoning data. The device may provide the new digital content to one or more devices to be accessed by at least one deepfake model used to create fake digital content and may perform one or more actions based on the new digital content.

Abstract: Techniques for providing temporary document access for secure file sharing are disclosed. An example method includes receiving a request from a first user to share a file, and generating, by an encryption module, a secure access link corresponding to the file that does not indicate a storage platform or a file name. The example method also includes transmitting the secure access link to a second user, and receiving an input from the second user during the accessibility duration corresponding to the secure access link. Responsive to receiving the input, the example method includes validating the access key to determine whether or not the second user should be granted access to the file; and responsive to determining that the user should be granted access to the file, retrieving an updated version of the file from the storage platform, and transmitting the updated version of the file to the second user.

Abstract: In one implementation, a method for spatially designating private content. The method includes: presenting, via a display device, an indication of a private viewing region relative to a location of the computing system; determining a first location for presentation of graphical content; and presenting, via the display device, the graphical content at the first location. The method further includes: transmitting a characterization vector associated with the graphical content to at least one other device for display thereon according to a determination that the first location of the graphical content is outside of the private viewing area; and forgoing transmission of the characterization vector associated with the graphical content to the at least one other device according to a determination that the first location of the graphical content is inside of the private viewing area.

Abstract: This application discloses a secure face image transmission method performed by an electronic device. In this application, when a camera component of the electronic device acquires any face image, face image information can be read from a buffer. The face image information is used for indicating a quantity of all face images historically acquired by the camera component. Identification information is embedded in the face image to obtain the face image carrying the identification information. The identification information is used for indicating the face image information but not perceivable by a human being. The face image carrying the identification information is transmitted to a remote server for authenticating the face image using the identification information. Therefore, the security of the face image acquired by the camera component is improved, and the security of the face image transmission process is effectively ensured.

Abstract: Disclosed is a method and a device for processing a file. According to an embodiment, the method comprises selecting a portion of the file to be encrypted; encrypting the selected portion of the file as encrypted data; and amending the file by replacing the selected portion with predefined data and appending the encrypted data at an end of the file.

Abstract: A display including a relief structure forming layer having a major surface with a relief type diffractive structure that displays a three-dimensional object as a diffraction image; and a reflective layer at least partially covering a region of the major surface where the diffractive structure is provided. A portion of the diffractive structure in a first region includes first and second linear parts forming a first lattice, and first parts arranged in respective gaps of the first lattice. The first and second linear parts each having a solid line shape form a first pattern. A portion of the diffractive structure in a second region includes third and fourth linear parts alternately arranged in the width direction thereof. The third linear parts each having a dashed line shape and the fourth linear parts each having a dashed or dotted line shape form a second pattern.

Abstract: A method for indentation of physical items may include forming, via an indenter, a plurality of first indents in a first surface of a first physical item, and validating a first material of the first physical item based at least in part on the first indents. The first indents may be disposed within a first defined region of the first surface and arranged in a first encoded pattern corresponding to a first item-specific serialization code for the first physical item.

Abstract: A method for producing a security device includes providing at least one stochastic selector, generating a coupling between an identifier and one particular combination of security features from a finite set of distinct combinations of security features based on the at least one stochastic selector, registering the coupling in a database, and applying an identification element including the identifier and a non-printable security element including the particular combination of security features according to the coupling to a substrate to produce a security device.

Abstract: A multipage security document has a first verification lens located in a see-through portion and corresponding to a first verification feature and a second verification lens collocated with the first verification lens as an adjacent layer to the first verification lens in the see-through portion and corresponding to a second verification feature. The multipage security document can contain a first sheet and a second sheet connected along one side to the first sheet such that the second sheet may be placed against the first sheet, the second sheet having a see-through portion. Other embodiments are disclosed.

Abstract: The present disclosure discloses a cross-modal image-watermark joint generation and detection device and method thereof. The device includes a multimodal encoder, an image-watermark feature co-embedding module, an image-watermark feature fusion module, an up-sampling generator, a non-cooperative game decoupling module configured to decouple an unwatermarked image and a reconstructed watermark from a composite image through two decoders by developing allocation strategies according to a non-cooperative game theory and a Shannon information theory; a strategy allocation module configured to set an composite image discriminator, keeping the consistency between the composite image and input text by multi-specification down-sampling convolution kernels and set the objective functions to constrain watermark reconstruction and unwatermarked image decoding; and a post-processing attack module configured to simulate various attacks for ensuring the robustness of watermarks.

Abstract: Methods, devices, and computer-program products are provided for adding data to a digital video signal in a visually imperceptible manner. For example, a region of pixels can be identified in a video frame, and one or more pixel characteristics of the region of pixels can be determined. Based on the one or more pixel characteristics of the region of pixels, at least one pixel characteristic of a subset of pixels from the region of pixels can be modified in order to encode a set of data into the region of pixels. An output frame can be provided that includes the modified at least one pixel characteristics for the subset of pixels.

Abstract: Methods, devices, and computer-program products are provided for adding and decoding data to a digital video signal in a visually imperceptible manner. For example, an encoded video frame can be obtained, and one or more blocks of the encoded video frame can be decoded. Binary data can be added to a subset of pixels from a set of pixels of the one or more blocks. For instance, a pixel component can be modulated to add the binary data. The one or more blocks can be re-encoded using at least one coding mode. The re-encoded one or more blocks can be added to the encoded video frame.

Abstract: Secure user authentication using an OTP involve pre-storing an OTP application on a first computing device for generating a valid OTP value for the user responsive to receiving entry of a valid PIN value of the user, no part of the valid PIN value is stored on the first computing device and pre-storing on a back-end server the valid PIN value and a valid shared secret for the user. Upon receiving entry of a purported PIN value, a purported shared secret is dynamically synthesized by the OTP application based on the purported PIN value of the user and a purported OTP value is generated. Upon receiving entry of the purported OTP value in a login attempt on the back-end server from another device, the server cryptographically calculates a window of OTP values, and login is allowed if the calculated window of OTP values corresponds to the received OTP value.

Abstract: Methods, systems, and apparatus, including computer programs encoded on computer storage media, for verifying the provenance of a digital object generated by a neural network, such as an image or audio object. Also methods, systems, and apparatus, including computer programs, for training a watermarking neural network and a watermark decoding neural network. The described techniques make efficient use of computing resources and are robust to attack.

Abstract: Methods and systems for identifying altered content are described herein. The system generates a fingerprint for an unverified content item and locates a plurality of content items that match the fingerprint. The system then compares corresponding frames between the unverified content item and each content item of the plurality of content items. The system identifies, based on the comparing, an altered frame in the unverified content item that does not match a corresponding frame in two or more of the plurality of content items. The system also determines that one or more frames of the unverified content item that follow the altered frame match corresponding frames in the two or more of the plurality of content items. The system then generates for display an indication that the unverified content item contains one or more altered frames.

Abstract: A measurement system is disclosed which includes a flow chamber configured to propagate a sample in a flow stream, one or more optical sources configured to irradiate the sample in the flow stream, one or more detector systems each configured to receive resultant light from the sample and, in response, generate a photon signal, the one or more detector systems each including one or more photon sensors each adapted to generate an electronic pulse in response to receiving a photon and a circuit operating in the giga hertz supporting the one or more photon sensors thus configured to count each individual photon in the resultant light from the sample.

Abstract: An enhanced vision system includes a first optic subsystem and a transparent photodetector subsystem disposed within a common housing. The first optic subsystem may include passive devices such as simple or compound lenses, active devices such as low-light enhancing image intensifiers, or a combination of passive and active devices. The transparent photodetector subsystem receives the visible image exiting the first optic subsystem and converts a portion of the electromagnetic energy in the visible image to a signal communicated to image analysis circuitry. On a real-time or near real-time basis, the image analysis circuitry detects and identifies structures, objects, and/or individuals in the visible image. The image analysis circuitry provides an output that includes information regarding the structure, objects, and individuals to the system user contemporaneous with the system user viewing the visible image.

Abstract: The present disclosure discloses a character offset detection method and system. The method includes: acquiring a text image; performing character separation based on the text image to obtain a character text region; calculating a center point of each rectangular box in the character text region to obtain a center point set; determining an optimal fitted curve based on the center point set; and analyzing character offset based on the optimal fitted curve to obtain an offset result. The present disclosure realizes detection of the character offset based on curve fitting, so that the accuracy of detection is improved.

Abstract: A check payable by a financial institution that includes a code printed thereon that stores information about the check and a method for generating a check payable by a financial institution that includes printing a code on the check that stores information about the check. In one embodiment, the code is a QR code and in another embodiment, the check does not include any of a check amount, an issue date, a payor, a payee, an account number, a routing number or a check number printed on it.

Abstract: Provided is a liquid crystal display device that includes a first substrate including a microlens corresponding to each pixel, a second substrate disposed to face the first substrate, and a liquid crystal material layer sandwiched between the first substrate and the second substrate. A first transparent material layer including a material having a first refractive index is formed in the first substrate, and a material having a second refractive index different from the first refractive index is disposed in a portion of the first transparent material layer corresponding to a region between adjacent pixels. A second transparent material layer including a material having a third refractive index is formed in the second substrate, and a material having a fourth refractive index different from the third refractive index is disposed in a portion of the second transparent material layer corresponding to the region between the adjacent pixels.

Abstract: In an example, a method includes, at least one processor, in response to each of a plurality of requests, determining a halftone screen. Determining the halftone screen comprises encoding a signature pattern in the halftone screen, and halftone screens for different requests may be encoded with a different signature pattern. The halftone screen may be arranged such that, when applied to image data to provide a printed output, the pattern is discernible therein to provide a signature for the printed output.

Abstract: Resource watermarking and management actions on electronic resources are described. In one example, a process for resource watermarking and management actions includes receiving, from a client device, a request to perform an action on an electronic resource and a device profile for the client device. The device profile can include at least one attribute of the client device. The process also includes identifying a watermark template for the electronic resource, determining descriptive data of the watermark template based on the request to perform the action and whether the device profile complies with a compliance rule, overlaying the watermark template and the descriptive data onto the electronic resource, and determining that the client device is authorized to perform the action on the electronic resource in response to the electronic resource being united with the watermark template.

Abstract: A phase correction concept is introduced to improve the performance of a spatially multiplexed optic. In a specific example, the optic is a diffractive lens. A phase offset is added to extend the depth of field of the diffractive lens and increase its focusing intensity. This can result in increased signal-to-noise ratio. These diffractive lenses may be used for imaging, focusing, and/or delivering light to an area of interest. They may be used to realize miniaturized medical imaging based on different imaging modalities such as optical coherence tomography, Raman spectroscopy, and fluorescence microscopy. They may also be used for different purposes and applications, for example laser ablation.

Abstract: A method for the display of an image in a display area, the method comprising: loading a first image file defining a first image comprising a main image and a watermark image overlaying the main image using a first transformation; loading a second image file defining a second image comprising the main image and the watermark image overlaying the main image using a second transformation; and alternating between displaying the first image and the second image in a location within the display area so that the watermark image is imperceptible to a user viewing the display area.

Abstract: Secure user authentication using a OTP involve pre-storing an application on a first device for generating a valid OTP for the user responsive to receiving entry of a valid PIN, no part of the valid PIN is stored on the first device and pre-storing on a back-end server the valid PIN and a valid shared secret for the user. Upon receiving entry of a purported PIN, a purported shared secret is dynamically synthesized on the first device by the application based on the purported PIN and a purported OTP is generated on the first device. When entry of the purported OTP is received by the server in an attempt to log on the server from a second device, the server cryptographically calculates a window of OTPs, and logs on to the server from the second device is allowed if the calculated window of OTPs corresponds to the received OTP.

Abstract: The present invention provides an improved system and method for using cryptography to secure computer-implemented choice mechanisms. In several preferred embodiments, a process is provided for securing participants' submissions while simultaneously providing the capability of validating their submissions. This is referred to as a random permutation. In several other preferred embodiments, a process is provided for securing participants' advance instructions while simultaneously providing the capability of validating their advance instructions. This is referred to as a secure advance instruction. Applications include voting mechanisms, school choice mechanisms, and auction mechanisms.

Abstract: An air conditioner is provided that includes a plurality of indoor units configured to be distributed and installed in a plurality of floors in a building; a controller configured to monitor and control the plurality of indoor units; and a wireless communication unit configured to transmit and receive data by the controller, the plurality of indoor units, and one outdoor unit using a wireless communication method. The wireless communication unit comprises a transmitter and a receiver using a Sub-GHz band frequency. The transmitter includes an optical orthogonal code generator configured to first cipher source data using an optical orthogonal code, and a narrow-band chaotic signal generator configured to secondarily cipher using a chaotic signal. The source data is sequentially encrypted through the optical orthogonal code generator and the narrowband chaotic signal generator and then transmitted.

Abstract: An image forming apparatus that forms an image on a recording medium includes: an image former that forms an image on a recording medium; an image reader that reads an image formed on a recording medium; an adjuster that adjusts the image former on a basis of a reading result obtained by the image reader by reading an image formed on a recording medium by the image former; and a processor configured to output, to an external apparatus used for diagnosis of the image forming apparatus, the reading result of the image formed on the recording medium by the image former when adjustment is performed by the adjuster.

Abstract: The present disclosure discloses Industrial Internet of Things based on platform linkage, control method, and storage medium. By adopting different encryption methods for different image data, and without changing the overall architecture of the cloud computing Internet of Things, the safe penetration of sensitive data on the cloud computing platform is realized, which effectively improves the security of sensitive data. In addition, it does not require additional wiring, reducing the networking cost of the Internet of Things, which has high applicability.

Abstract: Methods, apparatus, systems and articles of manufacture are disclosed for delivering extended payloads with composite watermarks. Examples disclosed herein embed a first watermark into a media stream in accordance with a first watermark technology, where the first watermark includes a first indicator bit and a first payload. Disclosed examples also embed a second watermark into the media stream in accordance with a second watermark technology, where the second watermark includes a second indicator bit and a second payload. In some disclosed examples, the first indicator bit and the second indicator bit are to indicate whether the first payload and the second payload are to be combined when the first watermark and the second watermark are decoded.

Abstract: Apparatus, devices, systems, methods, and articles of manufacture are disclosed for watermarking with phase shifting. Example watermark decoding apparatus disclosed herein are to identify watermark components in a media signal, determine a phase shift pattern associated with the watermark components in the media signal, the phase shift pattern based on one or more phase references, and detect a symbol of a watermark based on the phase shift pattern, the watermark associated with the watermark components in the media signal.

Abstract: A measurement system includes an optical source (e.g., laser) to irradiate a sample (e.g., a cell); a solid-state photon detector (SSPD) to receive resultant light from the sample; and a photon counter to count photons received by the SSPD. The photon counter can include a differentiator to provide a differentiated photon signal and a crossing detector configured to count photons based on a number of times the differentiated photon signal crosses a predetermined threshold level. In some examples, a pulse detector can provide a pulse-width signal from the SSPD output photon signal, and a pulse counter can count based on both a number of pulses and widths of the pulses. The SSPD can include a silicon photomultiplier (SiPM) array or a solid-state photomultiplier. Some examples use the measurement system to measure samples in fluids, e.g., in flow cytometers or multi-well plates.

Abstract: An image processing apparatus includes a processor that acquires document image data that is generated by reading an original document and recognizes character strings that are included in the document image data through character recognition, and the processor selects, as an issuing date of the original document, date information that includes time information from among a plurality of date information pieces in a case in which the plurality of date information pieces are extracted from among the character strings. The processor distinguishes a type of the original document on the basis of the document image data and selects date information as an issuing date of the original document from among the plurality of date information pieces in accordance with the type of the original document in a case in which no date information that includes time information has not been extracted.

Abstract: Apparatus, devices, systems, methods, and articles of manufacture are disclosed for watermarking with phase shifting. An example watermark encoding apparatus includes memory, machine readable instructions, and processor circuitry to execute the instructions to select a plurality of frequencies for encoding a watermark symbol, apply a phase shift pattern to the plurality of frequencies, the phase shift pattern based on a phase reference, and embed in the plurality of frequencies the applied phase shift pattern in a media signal to encode the watermark symbol in the a media signal, and embed the phase reference into the media signal.

Abstract: One embodiment provides a method, including: obtaining, using at least one image obtaining sensor of an image capture device, image data; tracking, using a gaze detection sensor, a user's gaze on a display of the image capture device, wherein a plurality of lens tiles are disposed on the display and wherein each of the plurality of lens tiles cover a portion of the display; predicting, using a processor and based on the tracking, a subsequent gaze location on the display that the user's gaze is expected to be directed toward; transmitting, using a processor, additional image data to the display associated with the portion of the plurality of lens tiles the user is currently viewing and the another portion of the display associated with the new set of the plurality of lens tiles; and updating, responsive to identifying that the user's gaze has transitioned to the subsequent gaze location and using the additional image data, the image data associated with the another portion of the display corresponding to the

Abstract: Method for producing a security device (1) comprising the following steps: providing at least one stochastic selector (8), generating a coupling between an identifier (11) and one particular combination of security features (6) from a finite set (5) of distinct combinations of security features based on the at least one stochastic selector (8), registering the coupling in a database (12); and applying an identification element (3) comprising the identifier (11) and a non-printable security element (2) comprising the particular combination of security features (6) according to the coupling to a substrate (22) to produce a security device (1).

Abstract: A method for storing data in a tamper-proof manner in a data block structure. The method includes, for a group of data blocks, determining functions, which are assigned to the data blocks of the group and dependent on the data stored in the corresponding data block; creating a combination of all functions assigned to the data blocks of the group; and determining a combination-dependent coefficient for each function of the combination, so that the combination meets a predefined condition; and for each data block of the group, determining a control group of data blocks of the group assigned to the corresponding data block; and storing the coefficient that was determined for the function of the corresponding data block in all data blocks of the control group.

Abstract: One example method includes inserting a signal layer in an image, the signal layer indicating that a sensitive layer in the image is a candidate for encryption, creating a single layer archive file that includes the sensitive layer, encrypting the single layer archive file to create an encrypted layer, constructing a new image that includes the encrypted layer, inserting, in the new image, a decryptor layer that is operable to decrypt the encrypted layer, and designating the decryptor layer as an entry point of the new image.

Abstract: Methods and systems for identifying altered content are described herein. The system generates a fingerprint for an unverified content item and locates a plurality of content items that match the fingerprint. The system then compares corresponding frames between the unverified content item and each content item of the plurality of content items. The system identifies, based on the comparing, an altered frame in the unverified content item that does not match a corresponding frame in two or more of the plurality of content items. The system also determines that one or more frames of the unverified content item that follow the altered frame match corresponding frames in the two or more of the plurality of content items. The system then generates for display an indication that the unverified content item contains one or more altered frames.

Abstract: A system for broadcasting that includes a watermark payload.

Abstract: In one embodiment, a computer-implemented method of digitally signing input by a data processing (DP) accelerator operation, and embedding the digitally signed input into an output, includes receiving, from a host device, a signature kernel specifying input to the signature kernel and executing the signature kernel to: extract a watermark from the input and obtain a hash for the watermark; generate output from the input; and embed the hash into the output. The DP accelerator provides the output to the host device. In an embodiment, the input includes an artificial intelligence (AI) model that is executed by the DP accelerator. The DP accelerator receives second input from the host, thereby producing an inference output from the AI model. The digitally signed watermark of the AI Model is embedded into the inference output and is provided to the host device.

Abstract: The present invention provides an improved system and method for using cryptography to secure computer-implemented choice mechanisms. In several preferred embodiments, a process is provided for securing participants' submissions while simultaneously providing the capability of validating their submissions. This is referred to as a random permutation. In several other preferred embodiments, a process is provided for securing participants' advance instructions while simultaneously providing the capability of validating their advance instructions. This is referred to as a secure advance instruction. Applications include voting mechanisms, school choice mechanisms, and auction mechanisms.

Abstract: Systems and methods of the present disclosure enable operation authorization using a dynamic code. Embodiments includes a computing system for receiving, from an access control server, an operation authorization request to authorize an operation by an initiator, where the operation authorization request includes a user identifier associated with the operation authorization request, and a dynamic code. The computing system accesses a dynamic key embedded in a user credential associated with the user identifier and generates a recalculated dynamic code using a cryptographic algorithm and the dynamic key. The computing system authenticates the operation authorization request based on the dynamic code being equivalent to the recalculated dynamic code and returns the authentication to the access control server to authorize the operation.

Abstract: The present invention provides an improved system and method for using cryptography to secure computer-implemented choice mechanisms. In several preferred embodiments, a process is provided for securing participants' submissions while simultaneously providing the capability of validating their submissions. This is referred to as a random permutation. In several other preferred embodiments, a process is provided for securing participants' advance instructions while simultaneously providing the capability of validating their advance instructions. This is referred to as a secure advance instruction. Applications include voting mechanisms, school choice mechanisms, and auction mechanisms.

Abstract: The present invention relates to method of manufacturing a tamper-proof medium for thermal printing, wherein a liquid treatment composition comprising at least one acid is deposited on a substrate which comprises a thermochromic coating layer comprising at least one halochromic leuco dye.

Abstract: A method of registering biometric information according to an embodiment includes generating a registration target biometric template based on biometric information of a user, transmitting a biometric information registration request including the registration target biometric template to a server, acquiring transaction information based on the biometric information registration request from the server through one or more communication interfaces, generating an electronic signature for the transaction information using a private key, transmitting the electronic signature for the transaction information to the server through the one or more communication interfaces, and acquiring a registration result for the registration target biometric template based on a verification result for the electronic signature from the server through the one or more communication interface.

Abstract: A transformed image generation unit 32 generates a transformed image by transforming an oblique image. A target region specifying unit 36 specifies a target region indicating the target in the front image based on a feature extracted from a typical portion of a document written on a target in a sample image and a feature extracted from at least a part of the front image. A verification unit 38 determines whether a target shown in the oblique image is the same as a target shown in the front image by verifying the target region in the front image and a region in the transformed image associated with the target region.