| 摘要 |
<p>A system and corresponding method for enabling the use of digital postage or, more generally, digital coin. The system includes, in the case of enabling digital postage, a digital postage generator (11), responsive to a request for digital postage, and further responsive to an initial pointer value, for providing a supply of digital postage, and further for providing verifying data for use in verifying portions of the digital postage when imprinted on mailpieces, wherein the digital postage is based on a random sequence of bits, wherein the digital postage generator (11) includes a bitstream generator (12) for providing a random sequence of bits associated with the initial pointer value, and also includes a digital postage manager (13) for providing as the digital postage the random sequence of bits and the initial pointer value, and for providing as verifying data information indicating at least a portion of the random sequence of bits. In some applications, the information indicating at least a portion of the random sequence of bits includes the initial pointer value and the random sequence of bits. Also in some applications, the digital postage generator (11) is further responsive to a key value and the bitstream generator (12) provides the random sequence of bits based on the key value and the initial pointer value, and the information indicating at least a portion of the random sequence of bits includes the key value and the initial pointer value.</p> |
