Telefonaktiebolaget Lm Ericsson (publ)

Anshu Shukla

Sambit Nayak

James Kempf

Nanjangud Chandrasekhara Swamy Narendra

Swarup Kumar Mohalik

Sandhya Baskaran

Harald Gustafsson

Ramamurthy Badrinath

Fredrik Svensson

Perepu Satheesh Kumar

Saravanan M

Nanjangud Chandrasekharaswamy Narendra

A method implemented by a network device to predict smart contract violations, where the network device is communicatively coupled to one or more computing nodes that execute one or more smart contracts that are configured to perform transactions on a blockchain. The method includes generating a control flow graph for each of the one or more smart contracts, retrieving, from the blockchain, a current state of a variable utilized by the one or more smart contracts following execution of a transaction that updates the variable, generating or updating a state space tree based on the current state of the variable and the control flow graphs generated for the one or more smart contracts, determining whether the state space tree meets a predefined violation requirement, and sending an alert to the one or more computing nodes in response to determining that the state space tree meets the violation requirement.

Method and system for prediction of smart contract violation using dynamic state space creation

In a method performed by a first node, the node determines a plan based on: i) a first goal to be achieved according to capabilities of the first node, and a first set of first actions to be performed by the first node to achieve the first goal, and ii) for each second node of one or more second nodes: a) a respective goal to be achieved according to respective capabilities of each second node, and b) a respective set of first actions to be individually performed by each second node to achieve the respective goal. The plan is to collaboratively achieve each of the respective goals and the first goal, by determining a respective set of second actions to be respectively performed by each second node and the first node. The first node sends a respective indication indicating the determined second actions.

First node, second node, wireless communications network and methods performed thereby to achieve a set of goals in a geographical space

A method for managing provenance information associated to one or more interconnected provenance entities in a provenance system for data processing pipelines in a distributed cloud environment over a network interface, wherein each of the data processing pipelines is configured to read in data, transform the data, and output transformed data is disclosed. The method comprises steps being performed by a configuration component of obtaining at least one declarative intent representing a configuration indicative of requirements and levels of priority for storage of provenance information for each of the data processing pipelines, deriving the requirements and levels of priority for storage of provenance information for each of the data processing pipelines based on the obtained at least one declarative intent, wherein one of the levels of priority—first level of priority—is higher than the other levels of priority—second levels of priority, estimating storage capacity for storage of provenance information in the provenance system based on the derived requirements and levels of priority, storing the provenance information according to the derived requirements and levels of priority for storage of provenance information and for each of the data processing pipelines, and when actual storage consumption for storage of provenance information in the provenance system meets a threshold of storage capacity set based on the estimated storage capacity: reducing a data amount for storage of provenance information of the second levels of priority in the provenance system. Corresponding computer program product, arrangement, configuration component, and system are also disclosed.

Managing provenance information for data processing pipelines

A method and a system are presented for enabling coordinated executions of actions in a distributed computing system with untrusted local computing agents. A smart contract including plans is recorded in a blockchain database. Each plan includes actions to be executed by a respective one of the local computing agents. Execution of a first action of a first set of actions to be executed by a first local computing agent is requested. Execution of a second action of a second set of actions to be executed by a second local computing agent is requested. Responsive to determining, based on the smart contract, that the first action can be executed, the first local computing agent is caused to execute the first action and responsive to determining, based on the smart contract, that the second action cannot be executed, the second local computing agent is caused to not execute the second action.

In a distributed computing system with untrusted entities method and apparatus for enabling coordinated executions of actions

A method for providing data streams to a client over a network interface wherein the data streams comprise message data streams which form provenance views based on provenance information is disclosed. The method comprises, by a routing component; receiving (), from a client, a request comprising a query for a provenance view submitted, obtaining () provenance information from a provenance information database based on the query of the received request, wherein the provenance information database comprises provenance relationships between provenance entities, obtaining () message data from a message data database based on the query of the received request, wherein the message data database comprises data corresponding to the provenance entities, deriving () correlated data based on the obtained provenance information and the obtained message data, and providing (), to the client, the derived correlated data as a provenance view in message data streams. Corresponding computer program product, arrangement, routing component, and system are also disclosed.

Providing data streams to a client

A method is implemented by one or more network devices to identify an originating point of failure in a composite service executed in a cloud computing environment. The execution of the composite service includes execution of a plurality of atomic services in an ordered sequence, where for each atomic service that is executed, an execution trace for that atomic service is stored in a blockchain to form an ordered sequence of execution traces, where the execution trace for a given atomic service is signed using the private key associated with that atomic service and analyzing one or more of the ordered sequence of execution traces to determine which of the plurality of atomic services originated the failure, where each execution trace that is analyzed is authenticated using the public key that corresponds to the private key associated with the atomic service that generated that execution trace.

Method and apparatus for secure and verifiable composite service execution and fault management on blockchain

A method and a network node for managing access, by a device, to a blockchain. The network node receives, a first request for creation of a first account. The first request includes information relating to a user of the device and a first hash value. The network node creates, based on the information and the first hash value, the first account on the blockchain, whereby a first address is obtained. The network node receives, a second request for recovering account information of the first account. The second request includes the first address of the first account, a source value from which the first hash value is derived and a second address of a second account. The network node generates a second hash value based on the source value. The network node initiates transfer of the account information of the first account to the second account.

Method and network node for managing access to a blockchain

A method and a network device in a cloud computing system, including a first blockchain component that is one of a plurality of blockchain components forming a blockchain system, of dynamic discovery of another blockchain component of the blockchain system are described. A multicast address including a multicast group identifier is generated. The multicast group identifier is generated at least in part based on a genesis block identifier that uniquely identifies a blockchain serviced by the blockchain system. The network device joins a multicast group identified by the multicast group identifier; and transmits a message destined to the multicast address, where the message includes a request for a unicast address of another component of the blockchain system.

Method and apparatus for dynamic discovery of a blockchain component in a cloud computing system

Methods and systems for authorizing the access of a service are described. A server is operative to receive a request to subscribe to a service. The server is to receive from the requestor a selected service offer from the set of service offers, where the selected service offer is cryptographically signed with the private key of the requestor and the private key of the service. The server is further to record a delegation contract into a blockchain database, where the delegation contract includes an identification of the service, an identification of the requestor, and the service offer that is cryptographically signed with the private keys of the requestor and the service. The server is to transmit, to the requestor, a confirmation that the service can be accessed based on the selected service offer; and transmit to the service the delegation contract causing the service to provide access to the requestor.

Method and apparatus for managing service access authorization using smart contracts

Methods and systems are disclosed for managing cloud services using smart contracts to facilitate various functions, such as tenant login, tenant enrollment, service registration, tenant usage charging, tenant usage tracking, tenant quota management, and tenant rights revocation. The proposed techniques allow tenant and service accounts to be represented as smart contracts, and for services to delegate authorization for bundles of service attributes to tenants and other services, for which the tenants and services are then charged. The business logic is implemented on a permissioned, distributed ledger (e.g., a private blockchain) and therefore is easily customized for specific classes of tenants and services.

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Bengaluru, India

Anshu Shukla