Information processing apparatus, information processing system, and information processing method

An information processing system comprising:

• a memory to store:
• shared information,
• identification information identifying each file of shared information in association with identification information of a group of users who share a use of the shared information, and
• user identification information identifying a user in association with the identification information of the group;
• and
• circuitry to:
• associate, with at least one file of shared information stored in the memory, masking information defining a masking target that a different group from the group associated with the file of the shared information is restricted from using,
• accept, from an information terminal, designation of a group for usage of the shared information,
• determine whether any file of the shared information associated with the designated group is associated with the masking information,
• determine one or more files of shared information to be transmitted to the information terminal based on whether any file of the shared information is associated with the masking information, and
• transmit the determined shared information to the information terminal.

An information processing method comprising:

• storing, in a memory, shared information, identification information identifying each file of shared information in association with identification information of a group of users who share a use of the shared information, and user identification information identifying a user in association with the identification information of the group;
• associating, with at least one file of shared information stored in the memory, masking information defining a masking target that a different group from the group associated with the file of the shared information is restricted from using;
• accepting, from an information terminal, designation of a group for usage of the shared information;
• determining whether any file of the shared information associated with the designated group is associated with the masking information;
• determining one or more files of shared information to be transmitted to the information terminal based on whether any file of the shared information is associated with the masking information;
• and
• transmitting the determined shared information to the information terminal.