| 摘要 |
A system and method that facilitates the authentication of streamed data received at a device, where authentication information is not distributed over the da ta stream. One embodiment of a method of authenticating data comprises the step s of: receiving, at the device, data in a plurality of packets transmitted by a data server; submitting a request for a server-computed authentication value to a data authentication server, wherein the data authentication server is adapted to compute the server-computed authentication value based on a subset of the da ta transmitted by the data server; receiving, at the device, the server-compute d authentication value from the data authentication server in response to the request; computing a device-computed authentication value based on a subset of the data received at the device corresponding to the subset of the data transmitted by the data server; and determining if the subset of the data received at the device is authentic by comparing the server-computed and device-computed authentication values.
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