JP2006113915A - Hard disk security system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a hard disk security system capable of protecting information stored in an HDD built in an image forming apparatus. <P>SOLUTION: A security ASIC 4 is provided between IDE I/F 3 connecting an image forming apparatus 1 main body and a hard disk 2 built in the image forming apparatus 1, thereby protecting the data in the hard disk 2. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a hard disk security system that protects information stored in a hard disk of a hard disk drive device built in an image forming apparatus such as a printer or a copying machine.

  In an image forming apparatus, the content stored in the hard disk of a built-in hard disk drive (HDD) is highly likely to be very important information in view of the intended use of the image forming apparatus. Most high-performance image forming apparatuses equipped with HDDs are used for daily work in a company.

For this reason, the data stored on the hard disk of the HDD is often a company secret, and if this information is leaked, it is a big pain for the company. Recently, news such as leakage of personal information held by companies has been widely reported in the news, and it is necessary to take measures against information leakage in the image forming apparatus.
An object of the present invention is to provide a hard disk security system capable of protecting information stored in a hard disk of an HDD built in an image forming apparatus.

In order to achieve the above object, the invention described in claim 1 is a hard disk security system in which a security ASIC is provided between an interface for connecting an image forming apparatus main body and a hard disk built in the image generating apparatus. Features.
According to a second aspect of the present invention, in the hard disk security system according to the first aspect, an attachment / detachment detection means for detecting the attachment / detachment of the hard disk by detecting a terminal state of the interface, and detection information of the attachment / detachment detection means are stored. And a hard disk security system comprising a storage means.
According to a third aspect of the present invention, in the hard disk security system according to the first aspect, when the hard disk is extracted, a data erasure command for erasing data on the hard disk is stored as the detection information, and then the hard disk The main feature is a hard disk security system that erases the internal data when activated.

According to the present invention, by providing the security ASIC between the interfaces that connect the main body of the image forming apparatus and the hard disk built in the image forming apparatus, the data of the built-in hard disk can be protected.
In addition, security information can be retained even when the power supply on the hard disk side is turned off by holding and monitoring the information on the attachment / detachment of the built-in hard disk in the storage means.
Further, when the built-in hard disk is removed, a data erasure command for erasing the data on the hard disk is stored as the detection information, and the internal data is erased when the hard disk is activated next time. , Information can be prevented from leaking when the hard disk is taken away.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a diagram showing a basic configuration of an output document monitoring system which is an embodiment of a hard disk security system of the present invention.
The image forming apparatus 1 shown in this figure has a hard disk drive (HDD) 2 built in, and a security ASIC 4 for security between the apparatus main body and the IDE I / F 3 connecting the built-in HDD 2. Is provided.
FIG. 2 is a specific configuration diagram of the output document monitoring system of this embodiment.
The output document monitoring system of the present embodiment shown in FIG. 2 has a security I / F 5 in front of the IDE I / F 3 of the HDD 2 and connects the security ASIC 4 unlike the HDD 2 having a normal IDE I / F 3. There is a feature in the point. Reference numeral 6 denotes a battery, and 7 denotes a flash ROM.
As shown in FIG. 3, the security I / F 5 includes a serial I / F, an R / W Signal (R / W I / F) indicating HDD access permission, and an attachment / detachment detection signal (attachment / detachment detection I / F). .
When there is no HDD access, the security mode is set to the security I / F 5 by the serial I / F. The setting contents are as shown in FIG. 4, for example.
The attachment / detachment detection I / F is as shown in FIG. 5. When the HDD 2 is powered off, the attachment / detachment detection signal is monitored by the built-in battery 6 and detected when the cable is disconnected. Information is written to the flash ROM 7.

In FIG. 4, when data erasure is selected when the HDD is removed, when the detachment detection I / F detects removal of the cable, the HDD erasure command information is recorded in the flash ROM 7 by the battery 6 and the security ASIC 4 is activated next time the HDD is activated. The hard disk data is automatically deleted.
Further, when the mode setting is set to security ON by the serial I / F, the R / W control is transmitted to the security ASIC 4 by some signals in addition to the IDE I / F 3 to execute the R / W. As an example, Frame and R / W permission signal are used as shown in FIG. Having these signals separately from the IDE I / F 3 can prevent the diversion of the HDD to other devices and the extraction of information using the other devices.

1 is a basic configuration diagram of a hard disk security system of the present invention. The specific block diagram of this invention hard disk security system. The block diagram of security I / F. The figure which shows the content of the security mode setting by serial data with a table | surface. The block diagram of an attachment / detachment detection system. The figure which shows the access control signal at the time of security ON.

Explanation of symbols

1 image forming apparatus, 2 HDD, 3 IDE I / F, 4 security ASIC

Claims (3)

  A hard disk security system characterized in that a security ASIC is provided between interfaces for connecting an image forming apparatus main body and a hard disk built in the image generating apparatus.   The hard disk security system according to claim 1, further comprising: an attachment / detachment detection unit that detects a terminal state of the interface to detect attachment / detachment of the hard disk; and a storage unit that stores detection information of the attachment / detachment detection unit. Features a hard disk security system. 2. The hard disk security system according to claim 1, wherein when the hard disk is removed, a data erasure command for erasing the data on the hard disk is stored as the detection information, and when the hard disk is started next, its internal Hard disk security system characterized by erasing data.

Images