Patent ID: 7734935

Claim:
An integrated circuit card configured to be usable with a first service provider and at least one different service provider, the integrated circuit card comprising: an integrated circuit configured to store key memory area division data and first area management key data; a memory area including: (a) a designated first portion; and (b) a second portion designated by the key memory area division data; and a memory operation unit configured to: (a) manage the key memory area division data; (b) encrypt first module data including second area management key data using the key memory area division data; and (c) provide said encrypted first module data to the first service provider; said first service provider being configured to: (a) issue the integrated circuit card; (b) provide a first service using the designated first portion of the memory area; (c) encrypt second module data including the encrypted first module data by using the first area management key data; and (d) provide the encrypted second module data to the memory operation unit; and the integrated circuit card being configured to perform 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 second portion of the memory area.