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Scheme for transferring copyright protected contents data using radio link layer authentication/encryption

  • US 20020025042A1
  • Filed: 08/23/2001
  • Published: 02/28/2002
  • Est. Priority Date: 08/23/2000
  • Status: Active Grant
First Claim
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1. A transmitting device for transmitting copyright protected contents data to a receiving device through radio communications, transmitting device comprising:

  • a first authentication unit configured to carry out a first authentication with the receiving device, for judging whether the receiving device is a device that is allowed to communicate with the transmitting device or not, on a radio link layer of the radio communications;

    a first key exchange unit configured to generate a first encryption key and share the first encryption key with the receiving device when the first authentication with the receiving device by the first authentication unit is success;

    a second authentication unit configured to carry out a second authentication with the receiving device, for protecting copyright of the contents data to be transmitted, through an encrypted radio communication using the first encryption key;

    a second key exchange unit configured to generate a second encryption key and share the second encryption key with the receiving device when the second authentication with the receiving device by the second authentication unit is success; and

    a communication unit configured to transmit the contents data to the receiving device through an encrypted communication path which is encrypted by using the second encryption key and provided on the radio link layer.

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