Communication device and communication control device with limited copyright protection range
AssigneeKabushiki Kaisha Toshiba
InventorsTakeshi Saito, Hideaki Nakakita, Keiji Tsunoda
Life of this patent
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Abstract
In a communication device having a function for encrypting and transferring, or receiving and decrypting contents data to be protected by copyright, an authentication and key exchange procedure with another communication device is carried out by exchanging data for the authentication and key exchange procedure directly on frames of a specific physical network or frames of a specific datalink layer network, so as to enable the encryption as the copyright protection and the decryption at the communication device and the another communication device.
Claims21
A communication device having a function for encrypting and transferring, or receiving and decrypting contents data to be protected by copyright, comprising:
- an encryption processing unit configured to apply an encryption as a copyright protection to the contents data to be transferred, or apply a decryption to received contents data;
- a transfer processing unit configured to carry out a transfer of the contents data to which the encryption is applied as the copyright protection, on a prescribed network layer protocol;
- a physical network interface unit configured to function as an interface with respect to a specific physical network or a specific datalink layer network;
- and
- an authentication and key exchange processing unit configured to carry out an authentication and key exchange procedure with another communication device, by exchanging data for the authentication and key exchange procedure directly on frames of the specific physical network or frames of the specific datalink layer network, so as to enable the encryption as the copyright protection and the decryption at the communication device and the another communication device.
A communication device having a function for encrypting and transferring, or receiving and decrypting contents data to be protected by copyright which contains no copyright protection control data, comprising:
- an encryption processing unit configured to apply an encryption as a copyright protection to the contents data to be transferred, or apply a decryption to received contents data;
- a transfer processing unit configured to carry out a transfer of the contents data to which the encryption is applied as the copyright protection, on a prescribed network layer protocol;
- and
- an authentication and key exchange processing unit configured to carry out an authentication and key exchange procedure with another communication device, including a procedure for exchanging a part or a whole of copyright protection control data for the contents data that is a target of the authentication and key exchange procedure, so as to enable the encryption as the copyright protection and the decryption at the communication device and the another communication device.
A communication control method at a communication device having a function for encrypting and transferring, or receiving and decrypting contents data to be protected by copyright, comprising:
- transmitting or receiving a request for an authentication and key exchange procedure that is directly mounted on a frame of a specific physical network or a specific datalink layer network, for enabling an encryption as a copyright protection and a decryption at the communication device and another communication device;
- and
- carrying out the authentication and key exchange procedure with the another communication device, by exchanging data for the authentication and key exchange procedure directly on frames of the specific physical network or frames of the specific datalink layer network.
A communication control method at a communication device having a function for encrypting and transferring, or receiving and decrypting contents data to be protected by copyright which contains no copyright protection control data, comprising:
- transmitting or receiving a request for an authentication and key exchange procedure for enabling an encryption as a copyright protection and a decryption at the communication device and another communication device;
- and
- carrying out the authentication and key exchange procedure with the another communication device, including a procedure for exchanging a part or a whole of copyright protection control data for the contents data that is a target of the authentication and key exchange procedure.
A computer program product for causing a computer to function as a communication device having a function for encrypting and transferring, or receiving and decrypting contents data to be protected by copyright, the computer program product comprising:
- a first computer program code for causing the computer to apply an encryption as a copyright protection to the contents data to be transferred, or apply a decryption to received contents data;
- a second computer program code for causing the computer to carry out a transfer of the contents data to which the encryption is applied as the copyright protection, on a prescribed network layer protocol;
- a third computer program code for causing the computer to function as an interface with respect to a specific physical network or a specific datalink layer network;
- and
- a fourth computer program code for causing the computer to carry out an authentication and key exchange procedure with another communication device, by exchanging data for the authentication and key exchange procedure directly on frames of the specific physical network or frames of the specific datalink layer network, so as to enable the encryption as the copyright protection and the decryption at the communication device and the another communication device.
A computer program product for causing a computer to function as a communication device having a function for encrypting and transferring, or receiving and decrypting contents data to be protected by copyright which contains no copyright protection control data, the computer program product comprising:
- a first computer program code for causing the computer to apply an encryption as a copyright protection to the contents data to be transferred, or apply a decryption to received contents data;
- a second computer program code for causing the computer to carry out a transfer of the contents data to which the encryption is applied as the copyright protection, on a prescribed network layer protocol;
- and
- a third computer program code for causing the computer to carry out an authentication and key exchange procedure with another communication device, including a procedure for exchanging a part or a whole of copyright protection control data for the contents data that is a target of the authentication and key exchange procedure, so as to enable the encryption as the copyright protection and the decryption at the communication device and the another communication device.
Dependencies are inferred from the claim text.