Interactive videogame verification using cryptographically protected transaction records
An example method of performing interactive videogame verification using cryptographically protected transaction records includes: receiving, by a videogame server, from a first videogame client device, a first transaction record reflecting a first set of events associated with an interactive videogame session, wherein the first transaction record is cryptographically signed by a first private cryptographic key associated with the first videogame client device; receiving, from a second videogame client device, a second transaction record reflecting a second set of events associated with the interactive videogame session, wherein the second transaction record is cryptographically signed by a second private cryptographic key associated with the second videogame client device; and validating the first transaction record based on the second transaction record.
1. A method, comprising:
receiving, by a videogame server, from a first videogame client device, a first transaction record reflecting a first set of events associated with an interactive videogame session, wherein the first transaction record is cryptographically signed by a first private cryptographic key associated with the first videogame client device;
receiving, from a second videogame client device, a second transaction record reflecting a second set of events associated with the interactive videogame session, wherein the second transaction record is cryptographically signed by a second private cryptographic key associated with the second videogame client device; and
responsive to successfully validating the first transaction record based on the second transaction record, determining a result of the interactive videogame session.
2. The method of claim 1 , wherein an event of the first set of events comprises a value received by the first videogame client device from one of: a keyboard, a game controller, or a pointing device.
3. The method of claim 1 , wherein an event of the set of events is a game-specific nondeterministic event.
4. The method of claim 1 , further comprising:
responsive to failing to successfully validate the first transaction record, terminating the interactive videogame session.
5. The method of claim 1 , wherein validating the first transaction record further comprises:
comparing each event of the first set of events to a corresponding event of the second set of events.
6. The method of claim 1 , wherein validating the first transaction record further comprises:
decrypting the first transaction record using a first public key associated with the first videogame client device.
7. The method of claim 1 , further comprising:
responsive to successfully validating the first transaction record, appending the first set of events to a cryptographically protected distributed ledger.
8. A method, comprising:
retrieving, by a videogame server, a double-signed transaction record reflecting a set of events associated with an interactive videogame session, wherein the double-signed transaction record is cryptographically signed by a first private cryptographic key associated with a first videogame client device participating in the interactive videogame session and wherein the double-signed transaction record is further cryptographically signed by a second private cryptographic key associated with a second videogame client device participating in the interactive videogame session;
decrypting the double-signed transaction record using a second public cryptographic key associated with the second private cryptographic key to produce a single-signed transaction record; and
decrypting the single-signed transaction record using a first public cryptographic key associated with the first private cryptographic key to extract the set of events associated with the interactive videogame session; and
determining, based on the set of events associated with the interactive videogame session, a result of the videogame session.
9. The method of claim 8 , wherein an event of the set of events comprises a value received by the first videogame client device from one of: a keyboard, a game controller, or a pointing device.
10. The method of claim 8 , wherein an event of the set of events is represented by a game-specific nondeterministic event.
11. The method of claim 8 , wherein the double-signed transaction record is received from the second videogame client device.
12. The method of claim 8 , wherein receiving the double-signed transaction record further comprises:
retrieving the double-signed transaction record from a cryptographically protected distributed ledger.
13. The method of claim 8 , wherein the set of events represents a final state of the videogame session.
14. A videogame client device, comprising:
a memory; and
a processing device operatively coupled to the memory, wherein the processing device is configured to:
store, in the memory, a first set of events associated with an interactive videogame session;
receive, from a peer videogame client device, a transaction record reflecting a second set of events associated with the interactive videogame session, wherein the transaction record is cryptographically signed by a second private cryptographic key associated with the peer videogame client device;
responsive to successfully validating the transaction record based on the first set of events, producing a double-signed transaction record by cryptographically signing the transaction record using a first private cryptographic key; and
transmit, to a videogame server, the double-signed transaction record.
15. The videogame client device of claim 14 , wherein an event of the first set of events comprises a value received by the videogame client device from one of: a keyboard, a game controller, or a pointing device.
16. The videogame client device of claim 14 , wherein validating the transaction record further comprises:
decrypting the transaction record using a public key associated with the peer videogame client device.
17. The videogame client device of claim 14 , wherein validating the transaction record further comprises:
comparing each event of the first set of events to a corresponding event of the second set of events.
18. The videogame client device of claim 14 , wherein the processing device is further configured to:
responsive to failing to successfully validate the transaction record, notify the videogame server of a session state mismatch between the videogame client device and the peer videogame client device.
19. The videogame client device of claim 14 , wherein the processing device is further configured to:
append the first set of events to a cryptographically protected distributed ledger.
20. The videogame client device of claim 14 , wherein the processing device is further configured to:
append the first set of events to a current data block of a cryptographically protected distributed ledger; and
append, to the current data block, a hash of a preceding data block of the cryptographically protected distributed ledger.