Data processing method, system and apparatus for processing a variety of demands from a service provider

A method of processing data for an integrated circuit card including an integrated circuit and an memory area, said integrated circuit card being configured to be usable with a first service provider and at least one different service provider, the method comprising:

• (a) causing the integrated circuit to store key memory area division data and first area management key data;
• (b) causing the first service provider to issue the integrated circuit card;
• (c) providing a first service from the first service provider using a designated first portion of said memory area, said memory area including a second portion designated by the key memory area division data;
• (d) performing at least one of a write operation and a rewrite operation to the second portion of the memory area, provided that the first area management key data authorizes the at least one different service provider to provide a second service using the designated second portion of said memory area;
• (e) causing a memory area operation unit to:
• (i) manage said key memory area division data;
• and
• (ii) encrypt first module data which includes second area management key data by the key memory area division data;
• (f) providing the first module data to the first service provider;
• (g) encrypting second module data including the encrypted first module data by using said first area management key data;
• and
• (h) providing the second module data to said memory area operation unit.

A data processing apparatus comprising:

• an input/output device;
• a processor configured to cause a portable device to:
• (a) store:
• (i) distribution key data;
• and
• (ii) a system code for identifying a first service provider, said portable device including an integrated circuit having a memory area, said portable device being configured to be usable with said first service provider and a plurality of different service providers including a second service provider;
• and
• (b) perform at least one of a write operation to said memory area and a rewrite operation to said memory area provided that a first area management key data requires the second service provider to provide a second service using part of said memory area when issued by the first service provider providing a first service using said memory area;
• and
• a memory device which stores a module including second area management key data, said second area management key data being:
• (a) issued by a memory area operation unit configured to manage processing of the data processing apparatus;
• and
• (b) encrypted by the memory area operation unit using key memory area division data and a registerable system code list indicating the system code added to the first service provider which can provide service by the same integrated circuit as the second service provider.

A data processing apparatus comprising:

• a processor configured to:
• (a) cause a portable device to:
• (i) store:
• (A) distribution key data;
• and
• (B) a system code for identifying a first service provider, said portable device including an integrated circuit having a memory area, said portable device being configured to be usable with said first service provider and a plurality of different service providers including a second service provider;
• and
• (ii) perform at least one of a write operation to said memory area and a rewrite operation to said memory area provided that a first area management key data requires the second service provider to provide a second service using part of said memory area when issued by the first service provider providing a first service using said memory area;
• and
• (b) encrypt a first module including second management key data by using the key memory area division data;
• and
• an input/output device configure to:
• (a) output the encrypted first module to provide it to the first service provider;
• (b) receive as input a second module including the encrypted first module and encrypted in the first service provider by using the first area management key data;
• and
• (c) output the second module to provide it to a memory area division apparatus for dividing the memory area under control of the second service provider so that a part of the memory area of the integrated circuit can be used by the second service provider.