7 results about "Proxy signature" patented technology

The invention provides an electronic contract multi-identity authentication method and device of a mobile terminal, equipment and a medium, and the method comprises the steps: determining whether to transmit an identity verification code to user equipment according to the response identity data and response behavior data of the user equipment to first identity authentication information; determining whether the user equipment passes the first identity authentication according to the input behavior data when the user equipment inputs the identity verification code; determining whether the user equipment passes the second identity authentication or not according to a real-time response behavior made by the user equipment for the second identity authentication information and the waiting response duration; determining whether the user equipment passes the third identity authentication according to a video frame sequence of the user equipment corresponding to the third identity authentication information and a shooting waiting time length; and if the user equipment passes the third identity authentication, determining that the multiple identity authentication of the user equipment is successful, and displaying an electronic contract to the user equipment. Therefore, the problems of false use and signing-for-another of the electronic contract are effectively avoided.

The application relates to a method and device for identifying a proxy signature, electronic equipment and a storage medium, and relates to the technical field of information security and pattern recognition. The method comprises the following steps: acquiring a set of signature images without labels; for each original signature image, performing standardization preprocessing on the original signature image; inputting each obtained target signature image into a feature extraction model trained through migration learning to extract a deep feature vector; freezing the parameters of a pre-trained bottom model and fine-tuning the parameters of a top model during training; using a density-based unsupervised clustering algorithm to cluster the target signature images according to the deep feature vectors; performing character recognition on each target signature image in each cluster to obtain signature texts; and if each signature text corresponding to a cluster contains at least two different names, it is determined that a proxy signature exists. The application realizes efficient, automatic and high-credibility identification of the specific illegal mode of one person proxying for multiple people without relying on supervised learning.

The invention relates to the technical field of smart power grids and information security, in particular to a PUF (Physical Unclonable Function)-based certificateless proxy signature smart power grid distributed energy transaction method, which comprises the following steps of: constructing a PUF-based certificateless proxy signature smart power grid distributed energy transaction system, transaction is carried out based on the certificateless proxy signature smart power grid distributed energy transaction system; the system comprises a power grid operator, an energy manufacturer, an agent, PUF equipment and a block chain, the transaction process comprises an initialization stage, an identity authentication stage and a transaction stage; according to the method, the unique key of the equipment is generated through the PUF, the problems of complex certificate management and key escrow are avoided by adopting a certificateless mechanism, decentralized evidence storage and non-tampering of transaction data are ensured based on the block chain, the problems of insufficient security, low efficiency and weak anti-attack ability of a traditional scheme can be effectively solved, and the method is adaptive to the resource-limited Internet of Things equipment and has the advantages of high security and high reliability. And efficient and credible safety guarantee is provided for distributed energy transaction of the smart power grid.

The invention provides a trusted data sharing certificateless proxy signature method and system based on a block chain. The method comprises the following steps: constructing a trusted data sharing system and a distributed account book by utilizing a block chain technology; a user (signer) obtains a transaction address of a transaction object (verifier) from a trusted data sharing system, and authorizes a proxy signer to sign a data sharing transaction with the verifier on behalf; the proxy signer generates proxy public and private keys by using the proxy certificate, signs the transaction by using the proxy private key, and sends the transaction to the trusted data sharing system; the verifier verifies the correctness of the signature of the related data sharing transaction; verified data transactions and related records are uploaded to a credible data sharing system for whole-network consensus and are registered on an account book. According to the invention, the credible sharing and transaction of data are realized by using the certificateless proxy signature and the block chain technology.

This invention provides a method for generating virtual identities based on the metaverse, aiming to achieve trusted identity generation and verification of consistency between virtual and real identities. The method collects user public and private keys, iris features, and semantic description information, and achieves multi-party trusted binding through an additive homomorphic threshold mechanism. It employs a structured perturbation-lookup table hybrid hash mechanism, fusing Griffin power mapping and Reinforced Concrete lookup table compression, to generate tamper-resistant digests for user public keys. It combines iris features and proxy signature parameters to generate physical identity information. Furthermore, it uses an identity-driven consistency twin network to achieve behavioral consistency verification and driver type discrimination between virtual and original identities. The method is applicable to Web3.0, decentralized identity authentication, and metaverse identity management, possessing high security, strong verifiability, and cross-platform interoperability.

The application relates to a method for realizing blockchain verifiable certificate application based on a safe endogenous commercial cipher technology, and the method comprises the following steps: initiating a blockchain digital identity (DID) application request, generating a user SM2 public and private key pair by a commercial cipher (KMS) and hosting the private key after identity verification, and completing DID registration; initiating a VC application request, signing a one-time JWT authorization certificate by the commercial cipher (KMS) through an agency-level SM2 key pair, carrying out business circulation and auditing, performing user private key proxy signature and agency private key signature based on the JWT authorization, and uploading an SM3 hash value of a VC document to a blockchain system to complete trusted storage. The method, system, device, processor and computer readable storage medium thereof based on the safe endogenous commercial cipher technology realize user experience optimization, system iteration flexibility, great improvement of system iteration efficiency, better signature and verification performance, and controllable identity credibility.

An integrity layer implements an Integrity Management (IM) module that creates and challenges integrity digests for artifacts identified by artifact references. A digest entry records an artifact reference, an artifact hash, a digest hash, signatures, a timestamp, metadata, and chain references to other digest entries. Digest entries are stored in an integrity store. To create a digest, a control-layer agent requests creation, the IM module computes the artifact hash, assembles the digest, obtains an agent signature, countersigns, records the digest, and returns it. To challenge, the IM module generates an artifact hash and compares it to the stored artifact hash. If the hash matches, the IM module recursively challenges each referenced digest entry in the chain. Chains may reference digests for source code, a compiler, a build environment, dependencies, and a workload bundle. Creation can occur at source, compilation, packaging, and registration stages.