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System and Method for lightweight NAS client using removable device

IP.com Disclosure Number: IPCOM000238122D
Publication Date: 2014-Aug-04
Document File: 8 page(s) / 141K

Publishing Venue

The IP.com Prior Art Database

Abstract

This disclosure introduces a way to use commonly available removable disk device for access and manage the integrated file system. The removable disk device will be formatted in two partition : the first partition contains the integrated file system metadata structure and a cloud storage access agent executable, and the second partition is encrypted partition that contains cached file system data. The credentials required to access the cloud storages are also stored on the encrypted partition. So when the removable disk is initiatlized ( partition and provide access credential), user can simply plug the removable disk to any system to access their cloud storage in a integrated manner. A passphrase is required to protect the access of the disk, and since the (cached) data and individual access credential are stored in the encrypted partition, the fear of losing the removable disk could be eliminated as well.

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System and Method for lightweight NAS client using removable device

    Cloud storage (e.g. Dropbox, Mozy, or event personal NAS) is pretty common today, but one of the problem to use them effectively is the requirement to install their own client on the operating system to use. It is sometime a tedious process to install these client software when people trying to access their cloud storage from a public or somebody's system. Another problem with cloud storage is that these storage maintains their own file system structures, so for different systems there is no way to integrate as their are basically storage silos. User can't spread the files they own across multiple cloud storages.

    To really leverage multiple cloud storage and provide a transparent & integrated way of file access, this disclosure introduce a way to use commonly available removable disk device for access and manage the integrated file system. The removable disk device will be formatted in two partition : the first partition contains the integrated file system metadata structure and a cloud storage access agent executable, and the second partition is encrypted partition that contains cached file system data. The credentials required to access the cloud storages are also stored on the encrypted partition. So when the removable disk is initiatlized ( partition and provide access credential), user can simply plug the removable disk to any system to access their cloud storage in a integrated manner. A passphrase is required to protect the access of the disk, and since the (cached) data and individual access credential are stored in the encrypted partition, the fear of losing the removable disk could be eliminated as well.

    So here are the core claim points of this idea: 1) A custom format for removable disk device that supports data confidentiality while provide transparent to general operating system.

    2) A specialized file system on the removable disk device that unifies heterogenous cloud storage to provide a integrated access / modification behavior.

Description of the disclosure:

1. Cloud Accessory Portable Device:
1.1 Specialized filesystem of the flash drive
The portable device is a generic flash drive including the flash memory,

or the Compact Flash card, SD card, etc, and typically has the USB interface to connect to the host computer. The flash drive will be initialized to the filesystem layout as illustrated in FIG. 1.

FIG. 1 Flash Memory Partitions

         It has two partitions - plain-text and encrypted. The principal benefit of having two partitions is that the plaint-text one will be used to store non-confidential data while any confidential data will be protected in the encrypted partition.


1) The plain-text partition

1


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         This partition is formatted in the well-known file system (e.g. MS-FAT file system) which can be recognized by most operating systems. The Executable Cloud Agent executable, which will be described later, is located within the plaintext p...