Method and apparatus for protecting the transfer of data
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United States of America Patent
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Jun 1, 2010
Grant Date -
Sep 18, 2003
app pub date -
Mar 11, 2003
filing date -
Mar 30, 1999
priority date (Note) -
In Force
status (Latency Note)
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Abstract
According to one embodiment, a method for scrambling and descrambling program data comprises the receipt of a mating key generator message including a manufacturer identifier. The mating key generator message is transmitted to a first remote source identified by the manufacturer identifier. In response, a mating key is received from the first remote source. Then, the mating key is supplied to a second remote source, the mating key being subsequently used to encrypt a service key used for scrambling program data.
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