Connection linked rights protection

A method for performing digital right management in a network, the method comprising:

• storing, in a first authorized device, a master right associated with a content, which master right controls what type of access the first authorized device has to the associated content;
• deriving a subright from the master right, which subright controls what type of access a second authorized device is given to the associated content;
• distributing the subright to the second authorized device, given that the second authorized device complies with a predetermined distribution criterion associated with the master right;
• measuring a distance between the first authorized device and the second authorized device,
• allowing, by means of exercising the subright, the second authorized device access to the associated content if the distance between the first authorized device and the second authorized device is smaller than a maximum access distance;
• and
• revoking the subright at the second authorized device when the master right exits the network.

A method for performing digital right management in a network, the method comprising:

• storing, in a first authorized device, a master right associated with a content, which master right controls what type of access the first authorized device has to the associated content;
• deriving a subright from the master right, which subright controls what type of access a second authorized device is given to the associated content;
• distributing the subright to the second authorized device, given that the second authorized device complies with a predetermined distribution criterion associated with the master right,
• wherein the control of the type of access that the second authorized device is given to the associated content by the subright is set by the first authorized device;
• measuring a distance between the first authorized device and the second authorized device, and
• allowing, by means of exercising the subright, the second authorized device access to the associated content if the distance between the first authorized device and the second authorized device is smaller than a maximum access distance.

A method for performing digital right management in a network, the method comprising:

• storing, in a first authorized device, a master right associated with a content, which master right controls what type of access the first authorized device has to the associated content;
• deriving a subright from the master right, which subright controls what type of access a second authorized device is given to the associated content;
• distributing the subright to the second authorized device, given that the second authorized device complies with a predetermined distribution criterion associated with the master right;
• receiving a contact from the second authorized device before exercising the subright by the second authorized device;
• measuring a distance between the first authorized device and the second authorized device;
• and
• allowing, by means of exercising the subright, the second authorized device access to the associated content if the distance between the first authorized device and the second authorized device is smaller than a maximum access distance.

A device comprising:

• a memory that is configured to store a master right that defines access rights of the device to content material, and
• a processor that is configured to:
• determine whether a second device is authorized to receive some or all of the access rights to the content material, based on a distribution right that is associated with the master right,
• create a subright that defines the access rights of the second device,
• determine a distance between the device and the second device, and
• distribute the subright to the second device if the distance is less than a predefined maximum distribution distance.

A device comprising:

• a memory that is configured to store a subright that defines access rights of the device to content material based on a master right at an other device on a network, and
• a processor that is configured to:
• verify to the other device that the device is authorized to receive subrights to content materials,
• transmit a response signal to a first signal that is received from the other device to facilitate determination, at the other device, of a distance between the device and the other device, the response signal being based on the first signal and a secret that is shared between the device and the other device,
• receive the subright from the other device, and
• exercise the subright to gain access to the content material.