Data processing device and method and program of same

A data processing method for authentication by an authenticating means with a device to be authenticated on the basis of key data generated by a key generating means, comprising:

• receiving from said authenticating means device identification data identifying the device to be authenticated, master key data, original key data, and service identification data at said key generating means, said service identification data including first service identification data corresponding to a first service to be received by a user of the device to be authenticated and second service identification data corresponding to a second service to be received by the user of the device to be authenticated;
• generating key data with said key generating means by using only one of said first service identification data or said second service identification data, said generating including selecting a key generation algorithm corresponding to selected service identification data from among a plurality of different key generation algorithms, and said generating including generating said key data by inputting the device identification data, the master key data, the original key data, and the selected service identification data into said selected key generation algorithm;
• providing the key data to said authenticating means;
• and
• authenticating with said authenticating means the device to be authenticated on the basis of said key data received at said providing.

A computer readable medium including computer executable instructions, wherein the instructions, when executed by a processor, cause the processor to perform a method for providing key data to an authentication program performing authentication with a device to be authenticated on the basis of key data and executed in a data processing device, the method comprising:

• receiving device identification data identifying the device to be authenticated master key data, original key data, and service identification data from said authentication program, said service identification data including first service identification data corresponding to a first service to be received by a user of the device to be authenticated and second service identification data corresponding to a second service to be received by the user of the device to be authenticated;
• generating said key data by using only one of said first service identification data or said second service identification data, said generating including selecting a key generation algorithm corresponding to selected service identification data from among a plurality of different key generation algorithms, and said generating including generating said key data by inputting the device identification data, the master key data, the original key data, and the selected service identification data into said selected key generation algorithm;
• and
• providing said key data generated by said generating to said authentication program.

A secure application module for communicating with an IC chip storing service date relating to at least one service, comprising:

• an authenticating circuit for authentication with a device to be authenticated on the basis of key data;
• and
• a key generating circuit for generating said key data on the basis of the data received from said authenticating circuit and providing the same to said authenticating circuit,
• wherein said authenticating circuit provides device identification data identifying the device to be authenticated, master key data, original key data, and service identification data to said key generating circuit, said service identification data including first service identification data corresponding to a first service to be received by a user of the device to be authenticated and second service identification data corresponding to a second service to be received by the user of the device to be authenticated, said key generating circuit generates said key data by using only one of said first service identification data or said second service identification data, said key generating circuit selects a key generation algorithm corresponding to selected service identification data from among a plurality of different key generation algorithms, and said key generating circuit generates said key data by inputting the device identification data, the master key data, the original key data, and the selected service identification data into said selected key generation algorithm.

A data processing device comprising:

• an authenticating unit configured to authenticate a device to be authenticated on the basis of key data;
• and
• a key generating unit configured to generate said key data on the basis of the data received from said authenticating unit and to provide the key data to said authenticating unit,
• wherein said authenticating unit is configured to provide device identification data identifying the device to be authenticated, master key data, original key data, and service identification data to said key generating unit, said service identification data including first service identification data corresponding to a first service to be received by a user of the device to be authenticated and second service identification data corresponding to a second service to be received by the user of the device to be authenticated, said key generating unit is configured to generate said key data by using only one of said first service identification data or said second service identification data, said key generating unit is configured to select a key generation algorithm corresponding to selected service identification data from among a plurality of different key generation algorithms, and said key generating unit is configured to generate a said key data by inputting the device identification data, the master key data, the original key data, and the selected service identification data into said selected key generation algorithm.