| 摘要 |
Several embodiments include a policy-bound token distribution system. The system can include a back-office server that issues policy-bound tokens to local main distribution servers. A local main distribution server can distribute a policy-bound token to a digital environment to authorize an operator to take advantage of a protected resource. The system can rely on a backup server to distribute the policy-bound tokens whenever the distribution service of the local main distribution server is unavailable. To prevent run-time leakage from the backup server, the backup server can synchronize its distribution state with the local main distribution server and the back-office server. The distribution state can include distribution transaction records between the backup server and client devices. Throughout the system, each distribution transaction record can be assigned unique transaction ID to prevent multiple accounting of the same distribution transaction record from different servers. |
