| 摘要 |
A postal security device has a secure housing within which are two or more accounting register sets. The accounting register sets are associated with distinct meter licenses. The postal security device can also store a single accounting register set, but is able to transfer the cryptographically signed register set to a nonsecure store such as the hard drive of a personal computer, the register set having been cryptographically signed. The register set may be retrieved from the nonsecure store and cryptographically authenticated, and restored to its location within the secure housing of postal security device. The postal security may provide service under more than one distinct meter license. The single meter license can also be associated with more than one postal security device, each with its own secure housing. Each register set is configured to permit being reset by means of a cryptographically secure exchange of data over a communications channel to external equipment such as a manufacturer's server or a server operated by the post office. |
