Communication device, communicaton system, communication method, and program

A communication system comprising:

• a first communication device operable to:
• perform one-to-one communication with a second communication device through electric field coupling or magnetic field coupling;
• the second communication device operable to:
• dynamically change authentication information, used in mutual authentication with the first communication device, based on a type of data selected on an application of the second communication device, wherein the authentication information comprises a product class, wherein the product class represents a category of the second communication device, and the type of data selected on the application of the second communication device;
• select a protocol that can be utilized by the second communication device and the first communication device;
• wherein the protocol is selected by the second communication device when a device mode of the second communication device has a priority higher than a device mode of the first communication device,
• wherein the first communication device selects and starts an application corresponding to the type of data and the selected protocol,
• wherein the first communication device specifies the application to be started based on the category of the second communication device specified from the product class;
• and
• convert the selected protocol into a protocol utilized by the physical layer to transfer data between the application on the second communication device and the application on the first communication device.

A communication method comprising:

• in a communication device:
• establishing one-to-one communication with another communication device through electric field coupling or magnetic field coupling;
• dynamically changing authentication information, used in mutual authentication with the another communication device, based on a type of data selected on an application of the communication device, wherein the authentication information comprises a product class, wherein the product class represents a category of the communication device, and the type of data selected on the application of the communication device;
• selecting a protocol that can be utilized by the communication device and the another communication device,
• wherein the protocol is selected by the communication device when a device mode of the communication device has a priority higher than a device mode of the another communication device,
• wherein the another communication device selects and starts an application corresponding to the type of data and the selected protocol, and
• wherein the another communication device specifies the application to be started based on the category of the communication device specified from the product class.

A non-transitory computer-readable storage medium having stored thereon, a computer program having at least one code section, the at least one code section being executable by a computer for causing the computer to perform steps comprising:

• establishing one-to-one communication with another communication device through electric field coupling or magnetic field coupling;
• dynamically changing authentication information, used in mutual authentication with the another communication device, based on a type of data selected on an application of the communication device, wherein the authentication information comprises a product class, wherein the product class represents a category of the communication device, and the type of data selected on the application of the communication device;
• selecting a protocol that can be utilized by the communication device and the another communication device;
• wherein the protocol is selected by the communication device when a device mode of the communication device has a priority higher than a device mode of the another communication device,
• wherein the another communication device selects and starts an application corresponding to the type of data and the selected protocol, and
• wherein the another communication device specifies the application to be started based on the category of the communication device specified from the product class.