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TRANSMITTING-SIDE RECORDING AND REPRODUCING APPARATUS, AND RECEIVING-SIDE RECORDING AND REPRODUCING APPARATUS
TRANSMITTING-SIDE RECORDING AND REPRODUCING APPARATUS, AND RECEIVING-SIDE RECORDING AND REPRODUCING APPARATUS
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机译：传输侧记录和再现设备，以及接收侧记录和再现设备
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摘要
A conventional recording and reproducing apparatus cannot move second copyright-protected AV data while moving a first copyright-protected AV content when moving such AV data via a network because the recording and reproducing apparatus issues an exchange key to be used for decrypting the AV data to a single receiving-side recording and reproducing apparatus only.;The recording and reproducing apparatus of the present invention generates a new exchange key as a random number and transmits the new exchange key each time an exchange key for use in a move mode is requested; while it always transmits an identical exchange key when a normal exchange key is requested. The recording and reproducing apparatus selects an exchange key to be used according to the address of a recording and reproducing apparatus which is the transmission destination when encrypting an AV content to be transmitted.
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