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5 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 It was withdrawn shortly after publication due to an undisclosed "significant flaw" and replaced by the slightly revised version SHA-1.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
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
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
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