METHOD AND DEVICE FOR USE IN UPDATING PUBLIC KEY SET AT BLOCKCHAIN NODE

摘要

Provided is a method for use in updating a public key set at a blockchain node, the public key set comprising public keys of all blockchain nodes participating in a consensus in a blockchain network. The method comprises: with respect to at least one newly added block, determining, on the basis of receipt index information and a node change-type transaction identifier in a block header of the block, whether a node change-type transaction indicated by the node change-type transaction identifier is present in the block (402), the receipt information comprising a transaction type identifier field; when the node change-type transaction is present in the block, acquiring block body information of the block (404); acquiring receipt information of the node change-type transaction in the block body information (406), the receipt information comprising a public key field, the public key field being used for storing a public key of a changed blockchain node indicated by the node change-type transaction; acquiring the public key of the changed blockchain node from the public key field of the receipt information (408); and utilizing the acquired public key to update a public key set (410).