Trusted Execution Environment threshold signature SYSTEM AND METHOD FOR STORING AND MANAGING KEYS FOR SIGNING TRANSACTIONS BASED ON A THRESHOLD SIGNATURE SCHEME USING A KEY OF A CLUSTER MANAGED IN A TRUSTED EXECUTION ENVIRONMENT

摘要

According to an embodiment of the present invention, a transaction signing method performed in a key storage and management system realized by a computer can comprise the steps of: configuring a cluster based on a node receiving a first key to be distributed and stored in a cluster and a second key to be shared by the clusters; determining at least one cluster for transaction signing among the configured clusters; and signing a transaction using the first key and the second key in the determined at least one cluster.