32results about "Payment protocols" patented technology

Devices, systems and methods are disclosed which enable data processing in multiple environments including in electronic transaction type environments, and environments including wireless beacons. In the former, a machine-identifiable tag is utilized to initiate a transaction with an electronic device and various devices and systems supporting such a tag processing platform are described. In the latter, the electronic device can be utilized for configuration and processing of data pertaining to wireless beacons and various systems devices and systems supporting such a wireless beacon environment are described.

The invention discloses a cloud data security sharing method based on a block chain. The method comprises the steps that 1, a trusted certificate authorization center provides a unique global identityID and a digital certificate according to identity information submitted by a user or an attribute authorization center; the attribute authorization center assigns attribute public and private key pairs for each attribute and distributes attributes for legal users; 2, encrypting and uploading the user data; 3, downloading data by the user; and 4, data decryption: the attribute key set of the usermeets the access strategy of the data, and a decryption key can be obtained through an attribute-based decryption algorithm, so that the data to be accessed can be decrypted. The method has the advantages that the data sharing safety and the data sharing efficiency are improved in an untrusted environment, and the compliance of entity behaviors is supervised.

The invention discloses a payment method based on a block chain. On the condition that a first trusted node performs payment and successful payment is performed, self account information is changed, and furthermore the updated account information is transmitted to each second trusted node so that each second trusted node performs synchronization of the self account information for obtaining updated account information of the first trusted node. The first trusted node and each second trusted node belong to trusted nodes which receive a password certificate. All trusted nodes are connected in a block chain topological structure. The invention further discloses a payment system based on the block chain.

The invention discloses an alliance chain construction method, a transaction method and a distributed supply chain system, and the method comprises the steps: constructing an alliance chain by takingeach distributor and supplier as nodes according to a command initiated by an online travel agent; establishing a whole network public channel of the alliance chain, and enabling every two nodes in the alliance chain to establish a private channel; wherein the distributors and the suppliers are distributors and suppliers of the wine travel commodities; the online travel agent provides an infrastructure of an alliance chain, and the infrastructure of the alliance chain is used for sorting and packaging transactions into blocks, broadcasting the blocks to all nodes in a channel and sorting nodesproviding consensus services, and providing CA certificate services for all the nodes in the alliance chain. According to the method, the alliance chain is constructed by taking the distributors andthe suppliers as the nodes, so that the commodity information can be quickly transmitted to each node, and decentralized commodity distribution and commodity price change information transmission arerealized.

The invention provides a block chain borrowing method and system. The method is applied to multiple borrower terminals in the block chain borrowing system. The method comprises the steps that a loan request is submitted to a block chain system; when a necessary information supplement notification sent by lender terminals or a risk management terminal is received, encrypted necessary information corresponding to the necessary information supplement notification is written into the block chain system, wherein the necessary information supplement notification is generated according to the loan request; multiple credit and loan electronic contract files sent by multiple lender terminals according to the loan request and a signature risk management result respectively are received, wherein thesignature risk management result is generated by the lender terminals or the risk management terminal according to the encrypted necessary information and written into the block chain system after being encrypted; the credit and loan electronic contract files which meet a preset condition are selected for signature, and target credit and loan electronic contract files are obtained. The problem oflow safety of a transaction process and data in the prior art is solved, and the method has the advantage of improving the safety.

The embodiment(s) relate to a method of securely communicating between a Point-of-Sale (PoS) terminal and a payment card. The method includes signing payment data with a private key of the PoS terminal to create a signature. The method includes encrypting the payment data and signature using a public key certificate of the payment card, which is encrypted and signed by a certificate authority using a certificate authority private key and is received at the PoS terminal after a public key certificate of the PoS terminal is validated at the payment card. The PoS terminal public key certificate is encrypted and signed by the certificate authority using the certificate authority private key. The method includes transmitting the encrypted payment data and signature to the payment card for decryption of the payment data and signature using a payment card private key corresponding to the payment card public key certificate.

Systems, methods, and devices provide financial account services. The computer system provides financial services between one or more service requestor devices and one or more service provider devices. The computer system establishes links to one or more service provider devices by providing configuration to support the connection type, protocol and format of data exchanges with each of the service provider devices that have established links. The computer system authenticates each service provider device to establish trust for data exchanges. The computer system supports the reception of service requests from one or more service requestor devices. Then by using the configured link information, the computer system determines the type and format of service requests. The computer system transcodes the service request. The computer system permits the flow of service requests to two or more service provider devices when the configured link information are not similar.

The invention provides a traceability method based on a block chain. The method comprises the following steps: carrying out first encryption operation on a public key of a visitor and a private key ofan owner to generate a first key; performing second encryption operation on the first ciphertext in the smart contract corresponding to the first hash value by using the first key to generate a second ciphertext, and sending the second ciphertext to the visitor; decrypting the second ciphertext by using the private key of the visitor to obtain another private key of the owner; and decrypting thethird ciphertext in the smart contract by using the another private key of the owner to obtain the plaintext of the target commodity information corresponding to the third ciphertext. According to themethod, the blockchain technology and the proxy re-encryption technology are combined, so that visitors need to obtain the target commodity information through a more strict decryption process, and thus it is guaranteed that the target commodity information is not tampered and can be traced truly.

The invention relates to a log generation and storage method and device for a smart contract, equipment and a storage medium. The method comprises the steps of forming a log document of the smart contract; generating a first private key and a first public key matched with the first private key; writing the first public key into a log document of the smart contract; generating a pair of second public key and second private key; generating a first shared key according to a first encryption algorithm, the first private key and the second public key; encrypting original log content according to the first shared key and a second encryption algorithm to obtain encrypted log content; writing the encrypted log content into a log document of the smart contract; and storing the intelligent contractlog document. According to the method, the timeliness and accuracy of intelligent contract log generation are improved, the generated first shared secret key used for encrypting the original log content is different, the cracking difficulty of illegal users is greatly increased, and thus the security is improved.

The embodiment of the invention discloses a digital money processing method, a device, a computer device and a storage medium. The method comprises the following steps of: obtaining a target currencytype corresponding to a digital currency and account identification information; Extracting an associated account and a standard currency type matched with the associated account from the account identification information; If the target currency type matches the standard currency type, a processing operation of the digital currency is performed. The embodiment of the invention can execute subsequent processing operation under the condition of the same digital currency type, so as to improve the safety of digital currency operation.

The invention discloses a permitted block chain anonymous transaction endorsement system and method, and mainly solves the endorsement strategy and identity privacy problems of an existing alliance permission block chain in transaction endorsement. The technical scheme provided by the invention comprises an endorsement node identity hiding scheme realized by using group signature, a permission block chain transaction scheme using anonymous endorsement, and a traceability and endorsement supervision scheme under an anonymous endorsement condition. According to the method, the identity privacy of the blockchain nodes participating in endorsement can be protected, the endorsement strategy of the transaction is protected, and the fault tolerance of permitted blockchain transaction endorsement is improved.

A system and method is provided for non-repudiated evidence that a copied digital item received by a buyer is sent by a specific and authorized distributor, and the copy is uncorrupted and legitimate for sale by the distributor. Non-repudiated evidence is generated based on unique encryption keys and hash codes identifying a specific distributor and a specific digital item. Credential checking is performed by a distribution system operator which is also responsible for collecting funds directly or indirectly. A potential buyer of a digital item is enabled to produce a digital object to send to the system operator to authenticate a received digital item. By checking the distributor's credential, the system operator authenticates the distributor and sends back a transaction ID and an encryption key. Once the buyer has purchased the digital item, the buyer can then be authorized to be a distributor of the digital item.

The embodiment of the invention provides a target object processing method and device. The target object processing method comprises the steps: obtaining at least one target resource corresponding to a user, and sorting at least one target resource based on a preset sorting rule; based on the object attribute information corresponding to each target resource after sorting, determining a target object of the user corresponding to each target resource; when the resource value of the target object corresponding to each target resource is greater than or equal to the set resource value of the target resource, determining an available resource value of the target object corresponding to each target resource based on the resource type of each target resource; and processing the target object corresponding to each target resource based on the available resource value of the target object corresponding to each target resource and the resource value of the target object corresponding to each target resource.

One or more embodiments of the invention provide a block chain-based asset management method and apparatus, and an electronic device, which are applied to a node device in a block chain. The transaction type supported by the block chain comprises a first asset definition transaction used for defining an asset model; an operator of the block chain defines an asset type and an asset format corresponding to the asset type in the block chain; the method comprises the following steps: receiving a first asset definition transaction issued by an asset management party, wherein the first asset definition transaction comprises an asset model which is defined by the asset management party and corresponds to the target asset type; the asset model comprises asset creation information corresponding to the target asset type; and in response to the first asset definition transaction, storing an asset model on the block chain, so that an asset creator creates standardized block chain assets in the block chain based on asset creation information in the asset model and an asset format corresponding to the target asset type.

The invention discloses an order following system and method, which are applied in a transaction system with multiple transaction servers. The order following system includes: a first information processing module, which is used for receiving a following condition and a following manner from a first transaction client, wherein the first transaction client is connected with a first transaction server; an information acquisition module, which is used for acquiring bargain sealing information generated by the transaction servers; and a second information processing module, which is used for receiving the bargain sealing information from the information acquisition module, and is used for judging whether the bargain sealing information meets the following condition, and if bargain sealing information meeting the following condition exists, generating a first transaction request according to the following manner and the bargain sealing information meeting the following condition, and sending the first transaction request to the first transaction server.

The invention discloses a method for executing transaction in a block chain, the block chain and a main node. The block chain comprises a master node and slave nodes, and the method comprises the steps that the master node pre-executes each received transaction based on a pre-execution state set to obtain a pre-execution read-write set of each transaction; after pre-executing each transaction, the main node serially processes each transaction as follows: whether a pre-execution read set of the transaction conflicts with the pre-execution state set or not is determined, and the pre-execution state set and the pre-execution transaction set are updated in the case of determining that no conflict exists; the master node sends a plurality of transactions arranged in sequence in the pre-execution transaction set, the arrangement sequence of the transactions in the pre-execution transaction set and a pre-execution read-write set of the transactions to the slave node; and the slave node executes the plurality of transactions according to the arrangement sequence of the plurality of transactions and the pre-execution read-write set of each transaction.

Embodiments of the present invention provide a method for processing transactions in a distributed network, such as a block chain network, comprising: a transaction initiator node receiving a first transaction request, wherein the first transaction request comprises digital credential identification information; acquiring first data associated with the digital voucher identification information ina local ledger of the transaction initiator node; obtaining address information of at least one transaction recipient node of the first transaction request based on the first data; and forwarding thefirst transaction request to the at least one transaction recipient node based on the address information. The method according to the invention can obtain the response associated with the transaction request on different distributed nodes through the established forwarding mechanism of the transaction request among the related distributed nodes.

The invention relates to the technical field of DPOS consensus node rights and interests security, and provides a method and system for solving potential safety hazards of rights and interests of DPOSconsensus nodes, the method comprises the following steps: receiving a request for modifying a node address sent by an account address, the request comprising a newly deployed update node address; verifying the signature of the account address, searching out a node address mapped with the account address in a node mapping table according to the account address after the signature verification ispassed, and replacing the node address with the updated node address, wherein the node mapping table is a corresponding relation between the node address and the account address preset in DPOS consensus; and by the DPOS consensus, selecting an out-block node, and when the account address is selected by the DPOS consensus, outputting blocks through the replaced node address. The problems that the private key of the node participating in the consensus is easily stolen, and the security of the node participating in the consensus, the obtained pledge rights and interests and the security of the block rewards are all in an internal state or in a state of not fortifying related participants are solved.

The invention provides a virtual account management method and device, and relates to the technical field of information security. The method comprises the following steps: dividing a number segment of a bank card number into preset sub-segments, and distinguishing a bank card from a virtual payment account group through digital numbers in the preset sub-segments; associating at least one bank card of the user with the virtual account group; and when determining that the card number in the payment request is the card number of the virtual payment account group, performing payment operation byusing the at least one bank card associated with the virtual payment account group. By utilizing the method, the risk of user information leakage can be reduced, and the operation of replacing the bound bank card is simplified.

The invention relates to a data processing method specially used for commercial purposes, in particular to an authorization and payment method compatible with various software environments, and aims to overcome the defect that a set of system is independently developed for each authorization and payment mode in the prior art. According to the method, request information of a user can be uniformly received, agent information can be automatically verified, environments where the user is located, such as a browser environment, a WeChat environment, an Alipay environment, a nailing environment and a bank APP environment, are distinguished, different business logics are distributed to process and different payment calls are initiated according to different environments, and uniform output is performed after processing is completed. Seamless connection with core business logic is realized, and resource waste caused by deployment of multiple sets of services is avoided.

The invention provides a traceability data cleaning method based on a traceability code, wherein each product is provided with a traceability code, trader information is checked, and the trader information is stored after being checked. The producer uploads the commodity information of the production and operation to the server; in the transaction, two traders have a purchase and sale voucher in the transaction, and the two traders upload their respective purchase and sale vouchers to the server respectively. The server verifies the received purchase and sale vouchers, and stores the transaction information after the verification is passed; the invention also provides a traceability data cleaning system based on the traceability code, which ensures that the data is true.

The invention discloses a transaction verification method and apparatus, an electronic device and a storage medium. The method comprises the steps of obtaining verification information of a to-be-verified transaction; wherein the transaction to be verified refers to a transaction with an unknown transaction state; the verification information at least comprises a source transaction code of the to-be-verified transaction; determining target transaction information matched with the source transaction code of the to-be-verified transaction from each piece of preset transaction information; wherein the target transaction information at least comprises a transaction message of a verification transaction and link configuration; packaging the transaction message to obtain a packaged message; calling a target system to check the to-be-checked transaction by using the packing message to obtain a check result of the to-be-checked transaction; wherein the target system refers to a system corresponding to the link configuration. Therefore, a corresponding verification program is no longer developed for each transaction, and verification of the abnormal transaction condition is realized according to the preset transaction information, so that the workload of development is effectively reduced.