Generating and validating a subscription key based on subscription parameters associated with a jurisdiction file stored in a NVRAM, the subscription key having characters based on a subscription start date, a subscription term, a key generation date, and a cyclical redundancy check value. Parameters are extracted from the subscription key including the subscription start date, the subscription term, the key generation date, and the cyclical redundancy check value and are stored in a memory of the gaming machine. The key is checked by generating a local cyclical redundancy check value based on a MAC address of the gaming machine and one or more of the extracted parameters, and is validated when the local cyclical redundancy check value matches the cyclical redundancy check value extracted from the subscription key. The jurisdiction file may be updated during a RAM clear function during installation of the gaming machine.

The systems and methods on a blockchain platform for one or more intermediaries for services including proxy re-encryption, independent audit, multiple-signatures based smart wallet associated with a smart contract and split-key authentication to achieve secure passwordless login. Proxy re-encryption by receiving a ciphertext from a first user with condition parameters that has been encrypted with a dynamically selected encryption algorithm. Audit service receiving an encrypted file from a user for storage on the blockchain platform; enforcing the security policy parameters for all access requests to the file on the blockchain platform; and optionally providing audit report of the encrypted file storage and access. A smart wallet with a group key using multiple signatures based on receipt of a threshold number of signatures. Split-key authentication by splitting the private key into two or more parts; and assigning the split private key part to two or more client devices.

A computing system that includes at least one processor and at least one memory communicatively coupled to the at least one processor is disclosed. The computing system also includes at least one network interface communicatively coupled to the at least one processor and configured to communicate with a customer device and a trusted third party. The at least one processor is configured to derive, using a hashing function, a multi-approval transaction address in a customer wallet from a first public key derived from a first parent public key, a second public key derived from a second parent public key, and a third public key derived from a third parent public key. The at least one network interface is also configured to transmit the multi-approval transaction address to the customer device.

Example embodiments of systems and methods for data transmission system between transmitting and receiving devices are provided. In an embodiment, each of the transmitting and receiving devices can contain a master key. The transmitting device can generate a diversified key using the master key, protect a counter value and encrypt data prior to transmitting to the receiving device, which can generate the diversified key based on the master key and can decrypt the data and validate the protected counter value using the diversified key.

A method includes receiving a request for payment credentials. The request indicates an account from which payment for a transaction is to be made. A payment token is looked-up that corresponds to the indicated account. Dynamic expiry data and a dynamic token verification code are generated. As a response to the request, the looked-up payment token, the generated dynamic expiry data and the generated dynamic token verification code are transmitted.

A system, method and computer-readable medium for interfacing with an EMV compliant chip card having an embedded microchip. A transaction computer includes a virtual credit card terminal running in a web browser and that is in communication with an EMV card reader having a chip card slot. The virtual terminal defines a first EMV transaction and a second EMV transaction based upon user input. The virtual terminal then causes the embedded microchip of the EMV chip card to generate a first cryptogram associated with the first transaction and a second cryptogram associated with the second transaction during a contact interface session or a contactless interface session. The virtual terminal then authenticates the first and second cryptograms over a computer network with a card issuer. Once authenticated, the virtual terminal completes the first transaction and the second transaction.

The present specification provides a blockchain-based method and apparatus for managing a biological asset object. The method is performed by a node device in a blockchain network, a smart contract for managing a biological asset object is deployed in the blockchain, and processing logic corresponding to contract code of the smart contract includes biological asset object creation logic, the method including: obtaining an asset object creation transaction generated by a client, where the asset object creation transaction includes identification information of a target organism; and invoking the smart contract, executing the biological asset object creation logic, and creating a target biological asset object corresponding to the target organism based on the identification information of the target organism.

This specification provides method for auditing authenticity of cross-border resource transfers, device, and electronic equipment. The method is implemented on a client device, and comprises: obtaining cross-border resource transfer information initiated by an initiator of a cross-border resource transfer; obtaining, in response to the cross-border resource transfer information, identification information corresponding to proof information that is stored in a blockchain and corresponds to the cross-border resource transfer information; generating a cross-border resource transfer request based on the cross-border resource transfer information and the identification information; and sending, to an auditor of cross-border resource transfers, the cross-border resource transfer request, causing the auditor to perform, based on the proof information that is stored in the blockchain and corresponds to the identification information, an authenticity verification on the cross-border resource transfer information.

A method of tokenizing sensitive data from a terminal device includes receiving, a connection request comprising a hardware serial number associated with a terminal device and validating the hardware serial number associated with the terminal device. The method includes sending a command to a terminal device that causes the terminal device to display a prompt for sensitive data associated with a user interacting with the terminal device and receiving an encrypted data packet from the terminal device. The encrypted data packet includes the sensitive data. The method includes sending the encrypted data packet to a gateway system for tokenization, receiving a token that represents the sensitive data, and providing the token to the terminal device.

A method includes: in response to a resource transfer operation initiated by a user on a transaction client of a user terminal to transfer a resource, generating a resource transfer request, wherein the resource transfer request includes resource transfer information that includes an certificate identifier; sending, through a transaction server corresponding to the transaction client, the resource transfer request to a resource transfer server coupled with the transaction server, causing the resource transfer server to: obtain a resource transfer certificate from a blockchain according to the certificate identifier; and generate and return a resource transfer identifier for the resource transfer information to the transaction client through the transaction server; and based on the resource transfer identifier, initiating a resource transfer confirmation to the resource transfer server, causing the resource transfer server to complete resource transfer processing based on the resource transfer information corresponding to the resource transfer identifier.