63 results about "Digital rights management" patented technology

The invention belongs to the technical field of digital copyright management, and discloses an intelligent copyright automatic authorization transaction platform system, which comprises a user management unit used for supporting a user to register and log in on an authorization transaction platform and uploading work information data; the digital copyright confirmation unit is used for carrying out original verification and quality evaluation auditing on the work information data to generate a work digital fingerprint; automatically writing the digital fingerprint of the work into a block chain evidence storage network through an intelligent contract, and generating an NFT digital certificate; the intelligent authorization contract generation unit is internally provided with an intelligent contract template and generates personalized terms in a matching manner according to the digital fingerprints of the works and preset authorization requirements; the personalized terms are converted into standardized intelligent contract codes, and corresponding contract texts are generated at the same time; intermediate links and manual operation are reduced, and the transaction efficiency is improved.

The invention discloses an electronic document tracing method and device based on dynamic encryption and multi-modal watermarking, and relates to the technical field of information security and digital rights management. The method comprises the following steps: acquiring a PDF document uploaded by a user, encrypting the PDF document by adopting a randomly generated main encryption key, and acquiring and storing the encrypted PDF document; the content of the encrypted PDF document is analyzed, secret information is embedded into a picture in the document based on a two-dimensional discrete cosine transform algorithm, and picture watermark embedding is completed; a self-adaptive watermark embedding algorithm is adopted to embed secret information into a text in the document, and text watermark embedding is completed; related information of the checking operation is written into a block chain database; dynamically extracting watermark information from the divulged PDF document by adopting a watermark extraction algorithm; and querying a traceability database according to the extracted watermark information, and outputting a traceability result by comparing the extracted watermark information with information in a database storing various watermark information. According to the invention, the survival rate and the concealment of the watermark can be improved.

NFTs are used to provide software licensing and DRM in a manner that is transferrable, allowing licensees to swap and resell licensed software according to terms specified by the licensor. NFTs are used to prove ownership of software and other digital assets on a blockchain. The blockchain provides a distributed public ledger that enables the tracking of ownership of the assets, without the use of a centralized server. Since software and other digital content licenses concern digital assets, they can be granted, tracked, and revoked on the blockchain via the use of NFTs. NFTs and the blockchain therefore provide a mechanism which is used to verify and authenticate software licenses, digital content licenses, and other types of licenses for digital assets. Smart contracts may be used to define and enforce the terms of the licenses, at any level of granularity.

The invention discloses a per-time payment digital copyright management method and system based on attribute-based searchable encryption, and the method comprises the steps: receiving an attribute token transmitted by a user side and a strategy ciphertext transmitted by a data transmitting end, the attribute token being generated by the user side according to an attribute key; the policy ciphertext is generated by the data sending end according to the access policy, the public parameter, the master key, the public key of the user side and the private key of the data sending end; and verifying the matching between the attribute token and the policy ciphertext, generating a certificate during matching, and sending the certificate to the cloud server, so that the cloud server executes security search and returns a matching result according to the certificate, the query trap door sent by the user side and the keyword ciphertext sent by the data sending side, the query trap door is generated by the user side according to the query keyword, the public parameter, the public key of the data sending side and the private key of the user side, and the keyword ciphertext is generated by encrypting the keyword by the data sending side. According to the invention, efficient and reliable technical guarantee is provided for the digital copyright payment per time service.

The invention discloses a block chain digital right management method and system, and the method and system achieve the efficient and safe circulation of polymorphic values through the construction of a dynamic anchoring engine and a space-time verification network. A legal clause coding technology is innovatively adopted, and laws and regulations such as a payment settlement method are embedded into an intelligent contract, so that the compliance is ensured while the commercial efficiency is improved. Through test verification, the system realizes 2000 + transaction processing capacity per second under a million-level user scale, and the abnormal transaction identification accuracy rate reaches 98.7%.

The following detailed description presents a method for supporting Digital Rights Management (DRM) in real-time streaming. The proposed method attains real-time constraints by reusing the original encoded real-time stream as the carrier of the encrypted data. A system is also specified for implementing the described method on a real-time streaming architecture.

Aspects of the technology disclosed herein are related to a distributed architecture for securely training data sets and / or delivering AI models to client devices for local use. Model creators are able to provide encrypted versions of their models to a centralized server that in turn distributes copies of the encrypted models to a plurality of distribution servers. When a request for a particular model is received from a client device, the best-suited distribution server is identified to deliver the model. The distributed architecture further includes a licensing server that controls access to and decryption of the models. The licensing server controls the distribution of licensing packages for the different models delivered by the distribution server.

NFTs are used to provide software licensing and DRM in a manner that is transferrable, allowing licensees to swap and resell licensed software according to terms specified by the licensor. NFTs are used to prove ownership of software and other digital assets on a blockchain. The blockchain provides a distributed public ledger that enables the tracking of ownership of the assets, without the use of a centralized server. Since software and other digital content licenses concern digital assets, they can be granted, tracked, and revoked on the blockchain via the use of NFTs. NFTs and the blockchain therefore provide a mechanism which is used to verify and authenticate software licenses, digital content licenses, and other types of licenses for digital assets. Smart contracts may be used to define and enforce the terms of the licenses, at any level of granularity.

The application discloses a tamper-proof watermark drawing method and system and a terminal, and relates to the technical field of information security and content protection. The method comprises the following steps: obtaining at least one basic template from a pre-established marking rule library, combining a current time stamp and random seed data to generate initial marking data, and ensuring that the initial marking data has unpredictable characteristics to obtain a preliminary dynamic marking result. The tamper-proof watermark drawing method and system and the terminal realize the safe protection, controllable distribution and accurate tracing of digital content, effectively prevent the content from being tampered with or unauthorized access, and improve the security and flexibility of digital copyright management.

The embodiment of the invention provides a digital copyright management method and device, equipment and a storage medium. The method comprises the steps that digital content is marked as one of a first group of content, a second group of content and a third group of content; for the first group of contents and the second group of contents, respectively pre-generating a multi-layer key license unit and a content key unit of a license, and storing the content key units into a first database and a second database; receiving a license request, and judging whether a multilayer key license unit or a content key unit corresponding to the license request is hit in the first database and the second database; when the first database is hit, the multi-layer secret key license unit is returned, when the second database is hit, the multi-layer secret key license unit is generated according to the content secret key unit, and when the first database and the second database are not hit, the multi-layer secret key license unit corresponding to the license request is generated; the problem of authorization delay in a high-concurrency scene can be effectively solved.

A 3D printing system provides digital rights management protecting proprietary source code defining 3-D object data usable to print 3-D objects from uncompensated printing, and includes a central server, 3D printers, and corresponding single board computers (SBCs) each coupled to a respective printer. The central server stores the proprietary source code, permits displaying of an inventory of designs in an online store, and permits a user to securely purchase use of the source code to print one or more copies of a desired 3D object. The central server communicates across a network to incrementally stream the digital file containing the proprietary source code defining the desired 3D object to an SBC, and selectively controls each SBC / printer, to cause deletion of each incrementally streamed plurality of slices when the purchased use is completed. The SBC notifies the central server when the purchased use is completed.

The invention discloses an image watermarking algorithm based on Kyber fully homomorphic encryption, which is characterized in that an anti-quantum Kyber lattice cryptographic algorithm is combined with a Patchwork watermarking algorithm, so that the exchangeability (first encryption and then embedding or first embedding and then encryption) of an encryption and watermark embedding sequence is realized, and dual-mode watermark extraction of a ciphertext domain and a plaintext domain is supported. According to the method, the addition homomorphic characteristic of Kyber is utilized, it is ensured that the operation sequence does not affect ciphertext generation and watermark extraction, the safety defect of a traditional algorithm in the quantum environment is overcome, and the method is suitable for scenes of digital copyright management, medical data sharing and the like and has the advantages of quantum attack resistance, high robustness, outstanding privacy protection capacity and the like.

Techniques for training an agricultural inference machine learning model to generate valid agricultural inferences of agricultural conditions based on ground truth sensor data that falls within a plurality of ground truth sensor value ranges associated with a particular agricultural area, and to generate invalid or ambiguous agricultural inferences of agricultural conditions based on ground truth sensor data that falls outside of the plurality of ground truth sensor value ranges associated with a particular agricultural area. The agricultural inference machine learning model is trained, based on ground truth sensor data for the particular agricultural area, to determine if the subsequently received ground truth sensor data falls within or outside of that plurality of ground truth sensor value ranges that correspond to the particular agricultural area.

The invention described herein is directed to a secure text messaging and object sharing mobile application connected to a DRM cloud service that provides encryption, digital rights management (DRM) of the text and of the attachments, blockchain transactions, the capability of attaching documents, photos and so forth, the capability of interfacing with a user's contacts application, and that operates in both Android and iOS environments.

A method and apparatus for providing a license to a client device, the license providing a key for decrypting a content instance. In one embodiment, the method comprises accepting a license request, the license request including a client identifier and an access token having an access token identifier and key request data comprising a content identifier identifying the content instance, determining if the received access token identifier is currently bound to a stored client device identifier, and temporarily binding the received access token identifier with the received client device identifier and providing the received access token for validation or returning an error without providing the received access token for validation depending upon the determination.

The following detailed description presents a method for supporting Digital Rights Management (DRM) in real-time streaming. The proposed method attains real-time constraints by reusing the original encoded real-time stream as the carrier of the encrypted data. A system is also specified for implementing the described method on a real-time streaming architecture.

NFTs are used to provide software licensing and DRM in a manner that is transferrable, allowing licensees to swap and resell licensed software according to terms specified by the licensor. NFTs are used to prove ownership of software and other digital assets on a blockchain. The blockchain provides a distributed public ledger that enables the tracking of ownership of the assets, without the use of a centralized server. Since software and other digital content licenses concern digital assets, they can be granted, tracked, and revoked on the blockchain via the use of NFTs. NFTs and the blockchain therefore provide a mechanism which is used to verify and authenticate software licenses, digital content licenses, and other types of licenses for digital assets. Smart contracts may be used to define and enforce the terms of the licenses, at any level of granularity.

Disclosed are systems and methods for a digital rights management (DRM) interface. A DRM request can be received via a scheme-agnostic application program interface (API). A scheme-specific request based on the DRM request can be transmitted via a scheme-specific API. A response to the scheme-specific request can be received via the scheme-specific API. A response to the DRM request can be transmitted via the scheme-agnostic API.

The embodiment of the invention relates to a watermark embedding method and device, electronic equipment and a storage medium, and relates to the technical field of multimedia processing, the method is applied to a terminal, and the method comprises the following steps: receiving a data stream and a license file sent by a server; carrying out decryption processing on the data stream based on a preset decryption algorithm to obtain coded frame data and initial meta-information; determining a watermark identifier based on the license file, and embedding the watermark identifier into the initial meta-information to obtain target meta-information; and displaying based on the target meta-information and the coded frame data. According to the embodiment of the invention, after digital copyright management decryption, the meta-information of the watermark identifier embedded into the video and other data is obtained from the license file, so that the watermark embedding which is hidden and cannot be discarded is realized.

This invention provides a method, apparatus, electronic device, and storage medium for embedding image watermarks. The method includes: acquiring encrypted data and license information of a target image; wherein the license information includes a decryption key; decrypting the encrypted data using the decryption key with digital rights management (DRM) software to obtain the original image data and original metadata of the target image; wherein the original metadata includes color information of the target image; embedding watermark information into the original metadata using the DRM software to obtain embedded metadata; and outputting the watermark-embedded data of the target image using the DRM software; the watermark-embedded data includes the embedded metadata. This method can achieve reasonable watermark embedding to reduce the possibility of image leakage.

Embodiments of the present application disclose a playing method, a communication device, a storage medium, a chip and a system, which are used for improving security of watermark adding and success rate of watermark adding. Embodiments of the present application provide a playing method, the method is applied to a client, and the method comprises the following steps: sending an authorization request message to a server, the authorization request message is used for requesting the server to authorize the client to use first data, the first data is digital media content encrypted by digital rights management (DRM); receiving an authorization response message from the server, the authorization response message comprises an encryption key corresponding to the first data and a first parameter corresponding to the first data, the first parameter is used for indicating a watermark control function; decrypting the first data according to the encryption key to obtain decrypted digital media content; controlling a watermark in the digital media content according to the first parameter, and playing the digital media content.

A decoding device includes a communication interface and a processor operatively coupled to the communication interface. The communication interface receives at least a portion of a broadcast stream containing media data, including media samples. The processor identifies information elements containing DRM processing information within the broadcast stream. Each information element is associated with a corresponding media sample from the media data. For each information element, the processor also identifies the media sample associated with that information element. Based on the information element, the processor further identifies the DRM processing information for that media sample. Finally, the processor decodes the media sample based on the DRM processing information.

The application discloses a kind of digital copyright management methods based on block chain technology, and the method includes the following steps: step one: using open-source alliance chain to support the technical of digital copyright transaction process;Step two: based on the registration of digital copyright information on chain, call smart contract to execute the compiled digital copyright transaction process logic for audit;Step three: when digital copyright transaction process data is loaded into upload data center, use encryption rights model to encrypt and decrypt data, perform data transmission and save in the back-end database after completion;In this method, the data center stores data in public ledger based on open-source alliance chain in blocks, links blocks into a chain structure according to time sequence, and verifies and stores data through the block chain structure.The application has the characteristics of improving the information support efficiency of digital copyright management and strengthening the copyright information transmission between each right subject.

A method comprising the following steps performed by a user device (300): transmitting an access request to a content provider system (100) to access content; receiving an access token for the content from a content provider system (100), the access token comprising an encrypted session key and a digital rights management (DRM) license comprising the session key; and in a communication session, transmitting a content request including the received access token to a content delivery network, and in response, receiving content data of the requested content from the content delivery network; wherein the content request further comprises an authentication tag obtained by performing a cryptographic operation performed by a DRM client module (320) of the user device (300) that signs and / or encrypts input data based on at least a portion of the content request using a session key of the received DRM license.

The invention discloses a video playing method and a related device, and relates to the technical field of video processing, a video link address, an authorization license and protection system specific header information of a target video are acquired from a server, and the target video is a video encrypted based on digital rights management. And realizing initialization of the decryption session based on the authorization license and the protection system specific header information to obtain a decryption key. And decrypting the encrypted media stream of the target video by using the decryption key to obtain a plaintext media stream, the media stream including a video stream. And decoding the plaintext media stream to obtain an original media stream, and playing the original media stream. Therefore, according to the method, the authorization license and the protection system specific header information are directly extracted from the server side, and initialization of the decryption session can be realized without waiting for receiving the demultiplexing result, so that the response speed of video playing is improved.

The embodiment of the invention provides a layered encryption method, decryption method, system and device for video and audio digital copyright, and the method comprises the steps: obtaining and dividing to-be-encrypted video and audio media content streams of a first video and audio media content layer and a second video and audio media content layer into a plurality of first to-be-encrypted video and audio media content and a plurality of second to-be-encrypted video and audio media content, the first layer and the second layer have the same content; and generating a first encryption key, a second encryption key, a first decryption key and a second decryption key, and encrypting the first to-be-encrypted video and audio media content and the second to-be-encrypted video and audio media content by using the first encryption key and the second encryption key respectively to obtain the first encrypted video and audio media content and the second encrypted video and audio media content, the starting position of the second encrypted video and audio media content of the first layer is within the duration range of the first encrypted video and audio media content of the second layer, the decryption time consumed by a single frame in the first encrypted video and audio media content is shorter than that consumed by a single frame in the second encrypted video and audio media content, and playing is more stable while the playing starting speed of a playing end can be increased.

Federated systems for issuing playback certifications granting access to technically protected content are described. One embodiment of the system includes a registration server connected to a network, a content server connected to the network and to a trusted system, a first device including a non-volatile memory that is connected to the network and a second device including a non-volatile memory that is connected to the network. In addition, the registration server is configured to provide the first device with a first set of activation information in a first format, the first device is configured to store the first set of activation information in non-volatile memory, the registration server is configured to provide the second device with a second set of activation information in a second format, and the second device is configured to store the second set of activation information in non-volatile memory.

This application relates to a multimedia file playback processing method, apparatus, electronic device, and storage medium. The method relates to cloud computing and includes: in response to a playback operation, sending a playback request for a multimedia file to a multimedia server; receiving the playback address of the multimedia file from the multimedia server in response to the playback request, and an authorization request tag issued by a digital rights management (DRM) license server. The method loads an encrypted multimedia file based on the playback address, and simultaneously requests an authorization file from the DRM license server based on the authorization request tag; parses the authorization file to obtain a key; decrypts the encrypted multimedia file using the key; and then plays the decrypted multimedia file. This method can obtain the authorization file while loading the encrypted multimedia file, thus protecting the legitimate interests of the copyright holder and avoiding unnecessary waiting time during playback, further improving the efficiency of multimedia file playback processing.

The application discloses a video playing method and related device, and relates to the technical field of video processing. A video link address, an authorization license and protection system specific header information of a target video are obtained from a server, and the target video is a video encrypted based on digital rights management. The initialization of a decryption session is realized based on the authorization license and the protection system specific header information, and a decryption key is obtained. The encrypted media stream of the target video is decrypted by using the decryption key, and a plaintext media stream is obtained, wherein the media stream comprises a video stream. The plaintext media stream is decoded to obtain an original media stream, and the original media stream is played. It can be seen that the authorization license and the protection system specific header information are directly extracted from the server, and the initialization of the decryption session can be realized without waiting for the reception of demultiplexing results, so that the response speed of video playing is improved.