Blockchain-implemented method and system for access control on remote internet-enabled resources
The invention provides a blockchain-implemented control method and corresponding system(s). The invention may control access to an internet-enabled resource such as an IoT device that is provided with computing capabilities enabling it to communicate with other computer-based resources and interact with a distributed ledger such as a blockchain. In one embodiment, the invention provides a method for controlling the use of an internet-enabled resource comprising providing a first blockchain transaction comprising at least one output which is redeemable only by provision of at least: i) a secret value selected by a user; and ii) a signature associated with a resource provider; sending use-related information to the resource; generating a second blockchain transaction requesting at least the secret value; and modifying the second blockchain transaction to include the secret value.
1. A computer-implemented method for controlling a driverless vehicle via a blockchain, comprising:
receiving a request for a driverless vehicle service from a user, the request including journey information;
estimating a cost of a journey associated with the journey information;
generating a deposit transaction on the blockchain that includes an output having a 2-of-3 multisig address using public keys of the user, a service provider, and the driverless vehicle;
broadcasting the deposit transaction to the blockchain;
creating a token transaction that includes the journey information or a pointer to the journey information;
instructing the driverless vehicle to monitor the blockchain for the token transaction; and
upon validation of the token transaction, the driverless vehicle collects the user.
2. A method according to claim 1 , further comprising:
generating, storing, and communicating public and private keys and signatures by the driverless vehicle.
3. A method according to claim 1 , wherein the journey information comprises a pick-up location, a drop-off location, and a number of passengers to be collected by the driverless vehicle.
4. A method according to claim 1 , wherein the deposit transaction is locked using a hash of a secret value provided by the user.
5. A method according to claim 1 , wherein the token transaction comprises:
an underlying value; and
information embedded in token transaction metadata, which includes the journey information.
6. A method according to claim 1 , wherein the driverless vehicle uses a private cryptographic key to claim an output of the token transaction and access the journey information.
7. A method according to claim 1 , wherein the driverless vehicle is configured to send and receive wireless communications to and from the user and the service provider.
8. A method according to claim 1 , further comprising:
unlocking a door of the driverless vehicle upon receiving a message from the user, wherein the message is signed with a private key of the user.
9. A method according to claim 1 , wherein the driverless vehicle is configured to use detection equipment to detect a number of passengers entering the driverless vehicle.
10. A method according to claim 1 , further comprising:
the driverless vehicle asking the user to confirm the journey information.
11. A method according to claim 1 , further comprising:
storing messages sent between the user and the driverless vehicle in a distributed hash table (DHT).
12. A method according to claim 1 , wherein the driverless vehicle generates a proposed transaction upon completion of the journey, the proposed transaction having a first input and a second input and at least one output, and wherein the first input is signed using a cryptographic signature and a public key associated with the driverless vehicle.
13. A method according to claim 12 , wherein the first input is signed using sighash flag SIGHASH_ALL|SIGHASH_ANYONECANPAY.
14. A method according to claim 12 , wherein the user adds a signature, a redeem script from the deposit transaction, and a secret value to the second input to unlock the proposed transaction.
15. A method according to claim 1 , wherein the driverless vehicle generates a refund transaction allowing the user to redeem the output of the deposit transaction if the user decides not to use the driverless vehicle service.
16. A method according to claim 15 , wherein the refund transaction has two outputs: a first output corresponding to a refund redeemable by the user, and a second output corresponding to a cancellation fee redeemable by the service provider or the driverless vehicle.
17. A system for controlling a driverless vehicle via a blockchain, the system comprising:
the driverless vehicle;
the blockchain;
one or more processors; and
memory storing computer-executable instructions, that, as a result of execution by the one or more processors, cause the system to:
receive a request for a driverless vehicle service from a user, the request including journey information;
estimate a cost of a journey associated with the journey information;
generate a deposit transaction on the blockchain that includes an output having a 2-of-3 multisig address using public keys of the user, a service provider, and the driverless vehicle;
broadcast the deposit transaction to the blockchain;
create a token transaction that includes the journey information or a pointer to the journey information;
instruct the driverless vehicle to monitor the blockchain for the token transaction; and
upon validation of the token transaction, the driverless vehicle collects the user.
18. A system according to claim 17 , wherein the driverless vehicle is configured to generate, store, and communicate public and private keys and signatures.
19. A system according to claim 17 , wherein the journey information comprises a pick-up location, a drop-off location, and a number of passengers to be collected by the driverless vehicle.