490 results about "Digital fingerprint" patented technology

The invention discloses a blockchain-based evidence preservation method, which is applied to a network system with master nodes and slave nodes, including: each slave node performs identity verification to the master node, and assigns a pair of secret keys to the slave nodes that pass the identity verification. key, and write the registration information of the slave node into the blockchain; after the master node responds to the corresponding slave node with the evidence upload request received, the slave node signs the electronic evidence to be uploaded with the corresponding private key and sends To the master node; according to the registration information of each slave node in the blockchain, verify the legitimacy of the slave node and the authenticity of the signature of the corresponding electronic evidence, store the verified electronic evidence to the cloud storage server and generate the corresponding digital fingerprint, Write the generated digital fingerprint into the blockchain along with the corresponding timestamp. The evidence preservation method of the present invention has strong real-time performance, can save a lot of time, and does not require the participation of a third-party notary organization, thereby saving social resources.

A steganographic method embeds hidden information like digital watermarks and digital fingerprints into an image by applying one or more zero-mean patches to a digital signal that conveys the image. Each zero-mean patch comprises elements having an average value substantially equal to zero. A printer tracking system is implemented by selecting a plurality of zero-mean patches according to a string of bits representing a printer serial number, and modifying printer control signals to embed the plurality of patches in each of a number of virtual cells within the image to be printed. The offset of the virtual cells with respect to the boundaries of the image and the location of the patches within each virtual cell are established in pseudo-random fashion. The printer tracking system further includes a technique for subsequently detecting the printer serial number by scanning the printed image and running a detection algorithm on the scanned data to recover the string of bits embedded in the zero-mean patches.

A hash-optimized backup system and method takes data blocks and generates a probabilistically unique digital fingerprint of the content of each data block using a substantially collision-free algorithm. The process compares the generated fingerprint to a database of stored fingerprints and, if the generated fingerprint matches a stored fingerprint, the data block is determined to already have been backed up, and therefore does not need to be backed up again. Only if the generated fingerprint does not match a stored fingerprint is the data block backed up, at which point the generated fingerprint is added to the database of stored fingerprints. Because the algorithm is substantially collision-free, there is no need to compare actual data content if there is a hash-value match. The process can also be used to audit software license compliance, inventory software, and detect computer-file tampering such as viruses and malware.

A method and system for electronically delivering files over a public network is disclosed. The network includes a plurality of computers including at least one server node and multiple client nodes. In a first aspect of the present invention, the method and system enable secure and reliable peer-to-peer file sharing between two client nodes. First, a digital fingerprint is generated and associated with a file in response to the file being selected for publication on a first client node. An entry for the file is then added to a searchable index of shared files on the server node, and the fingerprint for the file is also stored on the server. In response to a second client selecting the file from the search list on the server node, the file is automatically transferred from the first client node directly to the second client node. The second client node then generates a new fingerprint for the file and compares with the new fingerprint with the fingerprint from the server node, thereby verifying the authenticity of the file and publisher. In a second aspect of the present invention, the method and system also enable subscription-based decentralized file downloads to the client nodes. First, the client nodes are allowed to subscribe with the server node to periodically receive copies of one of the files. To provide a current subscribing client node with the file, the geographically closest client node containing the file is located, and the file is transferred from the closest node directly to the current subscribing node, thereby efficiently utilizing bandwidth.

The present invention provides a system and method to allow product placement, i.e. showcasing products broadcast over TV, cable or similar media and to enable viewers to view, bookmark and purchase products placed within the program as they appear on the TV screen at a particular time. The present invention further provides a method and system for creating and identifying a digital fingerprint, which consists of a record of one or more frames in a program and associating information about products that appear in these frames to the digital fingerprint. The fingerprints are stored in a database of digital fingerprints, accessible via a wireless network and the Internet from the viewer's mobile wireless device. The mobile device submits a request to identify and locate the fingerprints corresponding to the program frame(s) being viewed, and it receives and displays the associated product information in order to facilitate the purchase of the featured products.

The invention discloses a logistics tracking method based on a block chain. The method comprises steps that a user sending node uploads parcel information to a main node; the main node generates a digital fingerprint for the parcel information uploaded by the user sending node, writes the digital fingerprint and a corresponding time stamp into a block chain, broadcasts the block chain in all nodes; each logistics node generates parcel state information successively according to the digital fingerprint, the node information of the logistics node and the node information of a next logistics node in accordance with a parcel physical space transfer path; a corresponding user receiving node signs for the parcel, generates parcel receiving information and uploads the parcel receiving information to the main node in order for the main node to write the parcel receiving information into the block chain. The logistics tracking method applies the block chain technology to the logistics field, guarantees the traceability of the authenticity and the state of logistics information by using the unchangeable characteristic of the block chain, saves the logistics information and update state information fast and efficiently according to the characteristic of a private chain in order to satisfy a requirement for logistics instantaneity.

A method and system for authenticating secure transactions between a transacting user (9) and a secure transaction host (15) is provided. The system includes a mobile phone software application (59) installed on a transacting user's mobile phone (7) which is configured to compose a digital fingerprint (13) uniquely associated with the specific mobile phone (7) on which it is installed. The system further includes an authentication service provider with which users of the system may be enrolled by registering at least the digital identifiers composed by the applications installed on their mobile communication devices in an authentication database (5). The authentication service provider is configured to authenticate secure transactions on request from secure transaction hosts by sending transaction confirmation requests to mobile phones of enrolled users requiring them to confirm or deny secure transactions before such transactions are allowed to be finalized.

To identify participants in collusion directed to altering a digital fingerprint embedded in multimedia content, an ECC based fingerprinting technique establishes a code symbol for each of a plurality of segments of digital data forming the multimedia content. The code symbols are concatenated to form a fingerprint signal, which is subdivided into a plurality of subsegments for each segment in the digital data. The subsegments are permuted and embedded into the digital data. When a suspicious copy of the multimedia content is discovered, the permuted fingerprint signal is extracted from the content and inversely permuted to form a test fingerprint. The identity of one of the colluders is determined by correlation with characteristics of the codeword originally assigned to the user. The determination of identity may be enhanced by the addition of group data embedded as an additional fingerprint in the digital data. Joint consideration of coding and embedding provide benefits over previous fingerprinting techniques.

The invention discloses a sharing query method of electronic medical records based on block chain technology. The method comprises the following steps: a user node applies to join a block chain and sends identity authentication information, registers the identity information and allocates a pair of keys for encrypting electronic medical record information after legal authentication; meanwhile performing bidirectional verification on the encrypted electronic medical record information, and uploading the electronic medical record information passing the bidirectional verification to the block chain for the sharing query of the whole electronic medical record information; performing SHA256 hash algorithm secondary encryption on the real electronic medical record information by a trusted server to generate a segment of uploaded digital fingerprint of electronic evidence, and adding a corresponding timestamp for preventing electronic medical record tampering or information leakage; and storing the electronic medical records after twice encryption in the sharing query block chain, and uploading the same to the cloud; and providing a key by a remote node for identity proving, obtaining the electronic medical records in the sharing query block chain, and decrypting the electronic medical records by the trusted server.

Digital fingerprints (FIG. 1B), are used to authenticate an item. Authentication attempts (730), for a physical item or items, may automatically trigger actions or processes (FIG. 7) related to the attempted item or item or to other items. Different processes may take place depending on whether the authentication was successful (732, 912, 1012). The additional process(es) may be computer-implemented, for example, using executable scripts (740). The triggered action(s) may be immediate (“real-time”), or delayed, deferred, or batched, etc. At least one additional action or process is triggered or initiated, locally or remotely, by at least one affirmative authentication result (730) or at least one additional action or process is triggered or initiated, locally or remotely, by a least one unsuccessful authentication attempt (917, 1020). In one example, methods and systems are disclosed to realize a combination of purchase and authentication of an item into a single action (842).

A method by which more than one client program connected to a network stores the same data item at the same location or locations in a data repository connected to the network, the method comprising having a first client program deposit a first data item in a data repository, the depositing including determining a digital fingerprint from the data item using a reproducible pseudorandom process that produces digital fingerprints having a pseudorandom distribution, storing the data item in the data repository at a location or locations associated with the digital fingerprint, and associating a deletion permission token with the data item, and storing this association in the data repository, having a second client program initiate a process for depositing a second data item in the data repository, wherein the second data item is identical to the data item stored by the first client program, the process including determining a digital fingerprint from the second data item using the reproducible pseudorandom process, determining from the digital fingerprint that a data item identical to the second data item is already stored in the data repository, relying on the data item already stored in the data repository for storage of the second data item rather than storing a separate copy of the second data item, and associating a second deletion permission token with the data item already stored, and storing this association in the data repository, having a client program initiate a process for deleting the data item already stored in the repository, wherein a deletion permission token associated with the data item is deleted from the repository, but the data item itself is not deleted.

Content is provided on a medium or is transmitted, for example streamed, with in-built protection against unauthorised playback or copying. Video content data is provided in content blocks, each of which relates to a video frame and has a corresponding header. Some content clocks have an excess data item, such as a digital fingerprint, interposed somewhere in the data comprising that content block. Thus, the amount of the data in the content block is increased by the addition of the digital fingerprint. Information identifying the length of the content block in the corresponding header is not altered. Some or all content blocks are obfuscated following the additional of the digital fingerprints. In a media player, de-obfuscation is performed, and digital fingerprints then removed before the resulting content blocks are decoded. Without de-obfuscation and removal of the digital fingerprints, correct decoding would not occur. Thus, playback of the content is limited to a media player that knows the de-obfuscation scheme used and knows the locations of the digital fingerprints.

Domain Name Service (DNS) requests are used as the reporting vehicle for ensuring that security-related information can be transferred from a network. As one possibility, a central facility for a security provider may maintain a data collection capability that is based upon receiving the DNS requests containing the information being reported. In an email application, if a data block is embedded within or attached to an email message, an algorithm is applied to the data block to generate an indicator that is specifically related to the contents of the data block. As one possibility, the algorithm may generate a hash that provides a “digital fingerprint” having a reasonable likelihood that the hash is unique to the data block. By embedding the hash within a DNS request, the request becomes a report that the data block has been accessed.

A system and method combining registration with a trusted third party, certificate generation, hashing, encryption, customizable file identification fields, and time-stamping technology with recognized “best practice” procedures to achieve the legal admissibility and evidential weight of any form of digital file or collection of digital files. Generally, the originator of the file (the first party) and the originator's employing organization are registered with a Trusted Third Party. The originator reduces the file, by means of a hashing algorithm, to a fixed bit length binary pattern. This provides a unique digital fingerprint of the file. The resultant hash value, the originator's identity details, the employing organization details associated and securely linked to the digital certificate, the title of the file, customizable file identification fields, and other relevant data are forwarded to a Trusted Third Party where the date and time from a known and trusted time source are added. The customizable file identification fields can provide the originator with a mechanism for configuring the seal to incorporate as much additional information as deemed necessary to prove the authenticity of the digital content and/or provide data for the purposes of adding value in functions such as source identification, sorting, analysis, investigation, and compliance. Such information could include, but would not be limited to, location/GPS coordinates, machine id, biometric information, smart-card data, reason for sealing. The original file does not leave the control of the originating party. When combined, the forwarded details and date and time create a Seal Record. The Seal Record is encrypted and hashed. The Seal Record along with all other relevant information are retained on a central secure server. The recipient of the file (the second party) can confirm the file has been received in an unaltered state with integrity retained and it is the authentic version by validating the file.

Systems and methods are provided for identifying a video object using digital fingerprints. The digital fingerprints are generated from information extracted from the video object including encoded video. The digital fingerprints can be calculated in a manner that permits identification of both the video object and operational characteristics of the video object based on matching calculated digital fingerprints with known fingerprints of known video objects. Systems and methods are described that allow a DVD to be uniquely identified and identify whether the DVD is original, copied or pirated. Systems and methods are described for computing digital fingerprints from strings of bits in which certain additional data is optionally embedded. Systems and methods are described that permit media players to access known signatures of known video objects maintained on one or more databases and to identify video objects presented for playing on the media player.

The invention relates to a fingerprint collection system comprising a fingerprint sensor, a scanning controller, a sensing unit driving circuit, an image output unit and a mode control circuit. The fingerprint sensor comprises a fingerprint sensing unit array, an antenna metal frame and a radiofrequency driving circuit; the fingerprint sensing unit array includes multiple sensing units, and the radiofrequency driving circuit drives the antenna metal frame to transmit radiofrequency signals. The scanning controller is used for selecting at least part of the sensing units of the fingerprint sensing unit array to serve as effective sensing units for sensing fingerprints and converting the same into electric signals. The sensing unit driving circuit is used for providing time-sequence signals needed for work of the effective sensing units. The image output unit is used for converting electric signals into digital fingerprint image information and outputting the information. The mode control circuit is used for controlling the sensing unit driving circuit to send different time-sequence signals to change working modes of the fingerprint collection system. The working modes at least include a capacitive collection mode and a radiofrequency collection mode. The fingerprint collection system has wide application range and has good collection and recognition effects in various application fields.

Methods and systems for tracking a physical object to identify or authenticate it utilizing digital fingerprints which are based on natural features extracted from a digital image of the object. Digital fingerprints do not require or rely on any labels, tags, integrated materials, unique identification characters, codes or other items that may be added to the object specifically for the purpose of identification. Consequently, the disclosed digital fingerprint techniques help to detect or prevent unauthorized alterations of documents, apparel, drugs and pharmaceuticals, etc. Further digital fingerprints can be used to better track and trace a wide variety of objects throughout the distribution chain to demonstrate their provenance and to detect counterfeit objects.

The present invention is a method for analyzing large volumes of network information for the purpose of identifying particular patterns of behavior in a plurality of connections. It enables identifying unique digital fingerprints of particular users, be it individuals, groups or organizations, and tracks their activities in large scale information networks such as corporate wide area networks or the public internet despite attempts on the part of the users to hide their identity. By recognizing unique identifiers and distinguishing patterns of behavior the method may differentiate between different users all using a single connection, or identify a single entity across multiple connections. The method may be applicable for tracking hostile entities inside an organizational network. Advertisers may uniquely and anonymously track the activities of users. The method may also be used to track and identify suspicious activities by law enforcement agencies via lawful interception of network data.

The invention concerns a method for processing postal packets including managing digital impressions of the postal packets. In a method for processing postal packets, during a preliminary sorting of the packets, a digital image of a packet comprising an address information is formed, a digital impression (V-Id) is derived from said image which constitutes a logical identifier for the packet and the packet impression is recorded in memory corresponding to data indicating the packet address information, and during a second sorting of the packets, a digital image of a current packet is formed again (51) comprising an address information, a digital impression for the current packet is derived (52) from said image and a search is performed among the recorded impressions in the preliminary sorting for a match with the current packet impression.

A physical object is scanned and a digital image of the object is generated from the scan. At least one subset of the image, known as an “authentication region” is selected. A plurality of feature vectors, arising from the physical structure of the object, are extracted from certain locations of interest within an authentication region and combined to generate a unique identifier or “digital fingerprint” for that object. Preferably, authentication regions for feature vector extraction are automatically selected by a software process. To identify or authenticate an object, a system may compare a digital fingerprint of an object to digital fingerprints previously stored in a database. Digital fingerprint data may specify a set of features (also termed “locations of interest”) which may be referenced in the creation of a “fingerprint template” which is a template of certain locations of interest and/or attributes selected for authenticating a particular class of objects.