On December 23, news reported by the Financial界 indicates that the National Intellectual Property Administration's information shows that Nokia Technologies Co., Ltd. has applied for a patent titled 'Device Method and Computer Program', with publication number CN 119155674 A, and the application date is June 2024. The patent abstract shows that a method is provided for using a device in user equipment to perform the following device, method, and computer program: encrypting digital assets using a first key to form encrypted digital assets; providing the encrypted digital assets and an index for the encrypted digital assets to a first network function; and providing an identifier of the encrypted digital assets to a first entity.