Computer programs, secret management methods and systems

A secret management method performed in an information processing device using secret splitting, the secret splitting being capable of forming a plurality of pieces of split data by splitting secret data, the secret management method comprising:

• in response to detecting a connection of a first storage device to the information processing device, reading out at least encrypted virtual drive meta-data for generating a virtual drive from the first storage device, the virtual drive being configured to maintain the secret data therein;
• decrypting the virtual drive meta-data;
• generating the virtual drive based on the decrypted virtual drive meta-data;
• and
• when a disconnection of the first storage device from the information processing device is detected, disabling the virtual drive,
• wherein a file image of a file within the virtual drive is split using the secret splitting at least into a first split file and a second split file which are to be written into different storage devices.

An information processing system comprising:

• a secret splitting module configured to form a plurality of pieces of split data by splitting secret data using secret splitting;
• and
• a control module configured to control reading out or writing each piece of the plurality of pieces of split data from or into a data area of a corresponding storage device,
• wherein the control module is further configured to maintain the secret data within a virtual drive of an information processing device, wherein the control module is further configured to:
• in response to detecting a connection of a first storage device to the information processing device, read out at least encrypted virtual drive meta-data for generating the virtual drive from the first storage device;
• decrypt the virtual drive meta-data;
• generate the virtual drive based on the decrypted virtual drive meta-data;
• and
• when a disconnection of the first storage device from the information processing device is detected, disable the virtual drive,
• wherein a file image of a file within the virtual drive is split by the secret splitting module at least into a first split file and a second split file which are to be written into different storage devices.