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11 results about "Secure Hash Algorithm" patented technology
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The Secure Hash Algorithm is a family of cryptographic hash functions published by the National Institute of Standards and Technology as a U.S. Federal Information Processing Standard, including: SHA-0: A retronym applied to the original version of the 160-bit hash function published in 1993 under the name "SHA". It was withdrawn shortly after publication due to an undisclosed "significant flaw" and replaced by the slightly revised version SHA-1. SHA-1: A 160-bit hash function which resembles the earlier MD5 algorithm. This was designed by the National Security Agency to be part of the Digital Signature Algorithm. Cryptographic weaknesses were discovered in SHA-1, and the standard was no longer approved for most cryptographic uses after 2010. SHA-2: A family of two similar hash functions, with different block sizes, known as SHA-256 and SHA-512. They differ in the word size; SHA-256 uses 32-bit words where SHA-512 uses 64-bit words. There are also truncated versions of each standard, known as SHA-224 and SHA-384. These were also designed by the NSA. SHA-3: A hash function formerly called Keccak, chosen in 2012 after a public competition among non-NSA designers.
Systems, methods, and media for capturing transaction information through a payment network
A system and methods to capture, store, track, and sort through receipt information details following a merchant / purchaser transaction executed through an electronic payment system. The system provides storage and analytical capabilities to provide access to and the utilization of the captured data by the merchant user, the purchaser user, and permitted third parties. The system operates by a secure hashing algorithm receiving a plurality of transaction information from a point of sale system. The secure hashing algorithm generates a primary key using the plurality of transaction information. A database receives and stores the primary key. The primary key is used when sending the plurality of transaction information to the database to encrypt the plurality of transaction information.
Owner:DAY AYRTON J
Abstract value generation method and device for secure hash algorithm, equipment and storage medium
PendingCN121098479AEncryption apparatus with shift registers/memoriesUser identity/authority verificationPlaintextParallel computing
The invention discloses an abstract value generation method and device for a secure hash algorithm, equipment and a storage medium, and relates to the technical field of data encryption, and the method comprises the steps: filling the end of a message of target message data with a plurality of bits of target data and a plaintext of the target bits to obtain a filled message; dividing and expanding the filled message according to a preset storage unit of the target hardware equipment to obtain a plurality of to-be-processed message blocks which have the same length and contain message words with a preset bit number; obtaining current message blocks from the to-be-processed message blocks in sequence based on a first preset message block traversal sequence; determining a current digest value corresponding to the current message block based on a working variable of a preset target secure hash algorithm, and calculating the working variable and the target hash constant by using a preset compression iteration function to obtain a new working variable; and when the message blocks which are not traversed do not exist in the processed message blocks, determining the current digest value as a target digest value. Therefore, the processing speed of the Hash algorithm can be improved.
Owner:SHANDONG YUNHAI GUOCHUANG CLOUD COMPUTING EQUIP IND INNOVATION CENT CO LTD
Electronic medical record secure storage and controllable sharing system, method, device and medium
The invention discloses a secure storage and controllable sharing system, method and device for electronic medical records and a medium. The system comprises a user terminal, a medical institution terminal, an application service layer and a block chain network. The user terminal is used for providing services for patients and third-party visitors; the medical institution end is used for providing services for medical staff; the application service layer is used for receiving original electronic medical record data from a medical institution end and encrypting sensitive fields or a whole file in an electronic medical record by using an asymmetric encryption algorithm or a symmetric encryption algorithm; calculating a unique hash value, namely an abstract, for the encrypted electronic medical record file by using a secure hash algorithm; and packaging metadata of the electronic medical record and the calculated hash value into a transaction by calling a function of the smart contract, and sending the transaction to a block chain network for recording. The diagnosis and treatment efficiency is improved.
Owner:SICHUAN CHANGHONG SMART HEALTH TECH CO LTD
Parallel RGB color image encryption method based on DNA and CA fusion diffusion
PendingCN121924218AKey distribution for secure communicationEncryption apparatus with shift registers/memoriesA-DNAInformation security
The invention specifically discloses a parallel RGB color image encryption method based on DNA and CA fusion diffusion, and relates to the technical field of image information security. The method comprises the following steps: acquiring a hash value of an original image through a secure hash algorithm; generating an initial value and a parameter value of the chaotic system according to the hash value; carrying out overall replacement on the original image based on a random sequence generated by the two-dimensional chaotic system; separating each channel of the overall replacement image, generating a random sequence of the 1D-JSMPM chaotic system according to a hash value, and dividing the random sequence obtained by each channel; generating an initial matrix and a DNA coding matrix; carrying out Fibonacci replacement and DNA-CA fusion diffusion; carrying out dynamic DNA operation; zigzag scanning is carried out. And performing DNA decoding operation and merging to obtain a final encrypted image. According to the method, various attacks can be efficiently resisted, and reliable safety guarantee is provided for the RGB color image.
Owner:SHIHEZI UNIVERSITY
A text semantic communication method based on joint knowledge graph learning
ActiveCN119416739BSemantic analysisDigital data protectionGenerative adversarial networkKnowledge graph
The application relates to a text semantic communication method based on joint knowledge graph learning, which comprises the following steps: completing the alignment of entities, relations and entity attributes in a knowledge graph library between user terminals through a secure hash algorithm; using a generative adversarial network to unify the embedding representation of different user terminal knowledge graph libraries; a user terminal compresses a to-be-transmitted text into semantic triples and matches a similar semantic triple set from a local knowledge graph library; the similar semantic triples are encoded and sent to a receiving terminal; the receiving terminal decodes the received message to obtain a similar semantic triple set; the similarity between the similar semantic triple and the local knowledge graph library is calculated by using a string similarity algorithm, the most similar triple is selected as the recovered semantic triple; and a fine-tuned semantic recovery module is used to convert the recovered semantic triple into a recovered text and recover the to-be-transmitted text, so that the safety and privacy of semantic transmission can be improved.
Owner:CHONGQING UNIV OF POSTS & TELECOMM
Blockchain-based vaccine production whole-process data traceability management method and system
This invention belongs to the field of biopharmaceutical management and public health safety supervision technology. It discloses a blockchain-based method and system for data traceability management of the entire vaccine production process. The method includes: a regulatory server acquiring production business timestamps reflecting the progress of vaccine batch production; production nodes collecting business data packets representing the process status of specific vaccine production procedures; inputting a dynamic random supervision factor as an initial perturbation parameter into a preset secure hash algorithm logic; storing the current block hash value and associated business data packets as an irreversible traceability data block; and the regulatory server calling a smart contract to extract the current block hash value from the traceability data block. This invention establishes a causal interlocking mechanism between process data and physical environment background, blocking the path for production entities to input non-real business data using virtual simulation or protocol replay technology.
Owner:CHANGCHUN BCHT BIOTECH
Blockchain-based low-altitude economy data management method and system
The application discloses a low-altitude economy data management method and system based on a block chain, relates to the technical field of information management, and comprises the following steps: inputting a multidimensional low-altitude economy data set into a space-time fusion network model; performing topological relation analysis and neighborhood feature aggregation by a space relation analysis layer; performing cross-dimension feature interaction by a space-time interaction layer; outputting a low-altitude space compliance smart contract; performing symbolization analysis and Kriging space interpolation on the low-altitude space compliance smart contract; obtaining a space risk heat map; synchronously performing multi-layer pyramid convolution on the space risk heat map; forming a space risk value matrix; and performing conditional mask calculation on the space risk value matrix to obtain a violation probability distribution. The space-time fusion network model and the secure hash algorithm greatly enhance the security and privacy protection level of the low-altitude economy data.
Owner:XIANNING VOCATIONAL TECHN COLLEGE
System and Method for Remotely and Securely Combining and Monitoring Marine Vessel Position, AIS, and Electronic Device Data Using NMEA 0183 and NMEA 2000 Data Standards via Broadband (non-VHF) Terrestrial and Satellite Connections
PendingUS20260052036A1Waterborne vesselsParticular environment based servicesThe InternetData system
Remotely monitoring and combining marine vessel position, Automatic Information System (AIS), and marine electronic device output data using NMEA 0183 and NMEA 2000 data standards via terrestrial and satellite broadband (non-VHF) connections. A computing device with communication interfaces for connecting to a vessel's NMEA 0183 and NMEA 2000 data systems and internet connection, a data cache for storing vessel data, and a software application including Secure Hash Algorithm 2 (SHA-2) encryption. The software application receives vessel data via the interfaces, transmits it in real-time, applying SHA-2 encryption, to a remote server using the internet connection, stores it in the data cache when the internet is unavailable, and transmits stored data upon reconnection. The method enables secure, real-time remote access to vessel data, including AIS data from nearby ships, facilitating vessel tracking and performance monitoring without relying on traditional methods, especially terrestrial and satellite VHF-band AIS receivers.
Owner:OWEN THOMAS +1
Trusted startup extension method based on confidential virtual machine
PendingCN121561919APlatform integrity maintainanceSoftware simulation/interpretation/emulationTamper resistanceVia device
The invention discloses a trusted startup expansion method based on a confidential virtual machine, and the method comprises the steps: measuring a specific PCIe device or other peripherals through a device reference value collection and packaging module before the virtual machine is started, and generating a unique reference value of the device; and the abstract is calculated by using a secure hash algorithm, so that the integrity and uniqueness of the data are ensured. And seamlessly fusing the reference value and the starting metric chain. According to the method, the firmware, the configuration space and the key register state of the specified PCIe equipment are included in the measurement process, so that trusted startup of the virtual machine not only covers core firmware and software, but also can verify the credibility of the peripherals, and therefore, the overall credibility and tamper-proofing capability of a confidential virtual machine platform are improved.
Owner:BEIJING UNIV OF TECH
Fused instruction to accelerate performance of secure hash algorithm 2 (SHA-2) workloads in a graphics environment
PendingUS20260074883A1Encryption apparatus with shift registers/memoriesConcurrent instruction executionGraphicsOperand
An apparatus to facilitate a fused instruction to accelerate performance of secure hash algorithm 2 (SHA-2) in a graphics environment is disclosed. The apparatus includes a processor comprising processing resources, the processing resources comprising execution circuitry to receive a fused SHA instruction identifying a length corresponding to a data size of the fused SHA instruction and a functional control identifying an operation type of the fused SHA instruction; based on decoding the fused SHA instruction, cause a sub-function identified by the length and the function control to be scheduled to an integer pipeline of the execution resource; and execute the sub-function of the fused SHA instruction in an integer pipeline of the execution circuitry, the sub-function to perform merged operations on a source operand of the fused SHA instruction, the merged operations comprising a rotate operation, a shift operation, and an xor operation.
Owner:INTEL CORP
Audio watermark embedding method and device, equipment, storage medium and program product
The invention provides an audio watermark embedding method and device, equipment, a storage medium and a program product, and the method comprises the steps: obtaining protection information for a to-be-processed audio, and employing a secure hash algorithm to map the protection information into a hash value with a preset length; filling the to-be-processed audio to obtain a filled audio, the number of bytes of the filled audio being a preset number; and embedding the hash value into the filling audio as a digital watermark to obtain a watermark audio. According to the invention, the watermark audio is difficult to counterfeit, and the security of the audio digital watermark is effectively improved.
Owner:CHINA MOBILE COMM GRP SHAANXI CO LTD +1