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Method for protecting removable flash storage devices using captcha questions

A flash memory storage and removal technology, applied in the protection of internal/peripheral computer components, instruments, electrical digital data processing, etc., can solve the problems of inconvenience and unavailability

Active Publication Date: 2014-10-29
SANDISK TECH LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Additionally, some removable flash storage devices provide data security through the use of trusted third-party audit commands; however, the use of trusted third parties may not be available or convenient in many situations

Method used

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  • Method for protecting removable flash storage devices using captcha questions
  • Method for protecting removable flash storage devices using captcha questions
  • Method for protecting removable flash storage devices using captcha questions

Examples

Experimental program
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Embodiment Construction

[0009] The detailed description that follows describes embodiments that typically use questioning to protect a removable removable flash storage device against accidental or intentional deletion of data, without the need for a write-protect switch or trusted third party to review the command. Such questioning may be in the form of a "Full Automated Public Turing Test to Tell Computers and Humans Apart" ("CAPTCHA"). Turning now to the attached drawings, figure 1 is a block diagram of a host device 50 in communication with a removable flash storage device 100 of one embodiment. Host device 50 may take any suitable form, such as, but not limited to, personal computer, mobile phone, gaming device, personal digital assistant (PDA), email / text communication device, digital video camera, digital media (e.g., MP3) player, GPS Navigation equipment and TV system. Removable removable flash storage device 100 may also take any suitable form, such as, but not limited to, Universal Serial...

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PUM

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Abstract

The embodiments described herein generally use a challenge to protect a removable mobile flash memory storage device, where the challenge may be in the form of a “Completely Automated Public Turing Test to Tell Computers and Humans Apart” (“CAPTCHA”). In one embodiment, a method is provided in which a removable mobile flash memory storage device receives a command from a host device, generates a CAPTCHA challenge, provides the CAPTCHA challenge to the host device, receives a response to the CAPTCHA challenge from the host device, determines if the response satisfies the CAPTCHA challenge, and performs the command only if the response satisfies the CAPTCHA challenge. In another embodiment, a removable mobile flash memory storage device is provided for performing these acts.

Description

Background technique [0001] Some removable flash storage devices, such as Universal Serial Bus (USB) devices or memory cards, have a write-protect switch to prevent accidental or intentional deletion of data stored in the removable flash storage device. For example, if the write-protect switch is enabled, since the user will need to take a special step (i.e., move the switch to the disabled position) to authorize a command that will result in loss of data stored in the removable flash storage device, The user will be prevented from accidentally reformatting the removable removable flash storage device. The write-protect switch, when enabled, also serves as a safety mechanism to prevent malware (eg, a virus running on the host device) from issuing commands that would result in the loss of data stored in the removable flash storage device. Additionally, some removable flash storage devices provide data security through the use of trusted third party audit commands; however, the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F21/36G06F21/79
CPCG06F2221/2133G06F21/79G06F21/36G06F12/00G06F12/14G06F21/00G06F21/85
Inventor 史蒂文.T.斯普劳斯卡洛斯.J.冈萨雷斯罗恩.巴齐莱达瓦尔.帕里克
Owner SANDISK TECH LLC