RU2769750C1 - Secure information storage device and a method for protecting information from unauthorized access - Google Patents

Abstract

FIELD: information technology.

SUBSTANCE: invention relates to the field of storage devices. The expected result is achieved due to the fact that the microcontroller alternately supplies converter voltage to the memory chips and the controller of the solid-state drive exceeding the maximum allowable voltage of the memory chip, which destroys the internal structures of the chip, resulting in the physical destruction of memory cells and the core of the controller of the solid-state drive.

EFFECT: ensuring the destruction of the information of the embedded solid-state drive in the event of a threat of unauthorized access.

2 cl, 1 dwg

Description

The invention relates to methods and devices for the destruction of information carriers and can be used for an information device protected from unauthorized access to the confidential information data contained in it.

Known (US 6189446) is a device and process for converting data stored on digital and analog recording media into an illegible form, which uses knurled rollers that distort the surface of the recording media passing between them. The apparatus and method of US Pat. No. 6,189,446 are designed to destroy information only on external storage media such as CDs.

A mobile device for the operational destruction of restricted-access storage media in the field (RU 166550) is known, containing a container with fixed briquettes containing a composition of self-propagating high-temperature synthesis and an ignition system, characterized in that the container is made in the form of a cylinder, consisting of two compartments separated by a lattice, containing in the first compartment, an electric motor with a gearbox installed on the shaft connected to a fan, while the gearbox is connected to a shaft installed in the second compartment, containing a stirrer, while the second compartment contains a loading device, with an ignition system installed on top of it in the form of a container with an electromagnetic valve containing flammable liquid and an igniter, and the briquettes containing the composition of self-propagating high-temperature synthesis additionally contain an igniter and are installed on three sides outside the container, while the end walls of the cylinder are enes lattice.

Known (RU 2735822) is a portable device for emergency guaranteed destruction of solid-state media of limited access, containing a housing with a technological container for the media placed inside, one or more briquettes or tablets of a gas-free or low-gas composition and an ignition system in the form of a wire spiral made of an alloy with high resistance to electric current, with an igniter composition applied to it, a micro electric igniter with a blocking and switching device, and a cavity filled with a heat absorber.

A secure information device (RU 122421) is known, including, placed, mainly in a case, a protected confidential information carrier (NCI) placed in a container with double walls, briquettes from the composition of self-propagating high-temperature synthesis (SHS) placed in a cavity formed by the walls of the container, and an ignition system, characterized in that the ignition system includes a sealed ampoule with fluorooxide (FO) placed in the cavity of the sleeve screwed into the side wall of the container, made with a partition separating the cavity of the sleeve, where the ampoule with FO is located, from the cavity formed by the walls of the container, at the same time, the device is equipped with a rod installed with the possibility of punching through the ampoule with the FD and the partition and entering the FD onto the briquette from the SHS composition when moving one end of the rod along the longitudinal axis of the sleeve, and pivotally connected by its opposite end to the lever fixed on the outer surface of the side wall of the case , while the growl ag is pressed by a spring against the side wall of the case and is additionally fixed by a locking device, made, for example, in the form of a pin, and the FD is selected from the group of halogen fluorides or their complex compounds in liquid or solid state.

The disadvantage of these devices is the complexity of the design with an uncontrolled chemical process, which requires increased safety measures during operation.

Known to ensure the impossibility of recovering information is a method and device for destroying information from electronic media, which uses the destruction of the information carrier by a flat cumulative cutting jet (RU 2424584) or by exposure to a pyrotechnic charge (2690781).

A device for destroying a memory chip crystal (RU 2690781) is known, containing a sealed housing in which a working charge is installed, an element for engaging the working charge and an initiating element containing current-carrying electrodes with a burnable incandescent bridge, characterized in that the working charge and the engagement element are made of pyrotechnic compositions and installed between the information carrier and the working charge.

A device for the operational destruction of information carriers (RU 172500) is known, including a storage located in a casing, fixed on grips and made in the form of a safe with a door and lattice side walls, identical containers are fixed inside the storage case on the upper and lower walls, containing the composition of self-propagating high-temperature synthesis, and on the back wall - a container with an explosive, while the containers are housings with profiled holes in the bottom and in the lid, as well as a hole in the end wall for a lanyard; the bottom of the vault is mounted on support rollers on two hinged supports containing a fusible link between themselves and placed above the inclined guides of the casing, and the upper part of the vault rests on the cocking mechanism plate connected to the cocking mechanism, consisting of four springs placed between the cocking plate and the upper wall key operated vault cover.

The disadvantages of these solutions include the complexity of structures, the use of explosives, low resistance to climatic and mechanical factors and explosion hazard, which requires increased security measures.

A device for destroying data (RU 108200) is known, which is a field-forming circuit, which is designed to be connected to an electric power source from a flat or flattened insulated conductor, spirally twisted into coils, stacked one inside the other and tightly adjacent to each other, while each of the turns is fixed with limitation of its displacement relative to the neighboring turn. To operate the device, it is necessary to use additional power for the circuit. In this case, there is a negative impact on the surrounding radio-electronic equipment.

A device for emergency guaranteed destruction of information contained in electronic media (RU 188957) is known, containing a housing with a mains power source, an induction current generator and a working volume with an induction coil placed inside it, as well as a steel technological container placed in a ceramic crucible inside the induction coil. with a cover, made to accommodate an information carrier and a coolant, while the device is equipped with a pump that creates a reduced pressure in the working volume.

A device for destroying information placed on a solid-state digital SSD drive (RU 2654163) is known, containing an inductor excited from a capacitive energy storage device, the surface of which is similar to the surface of a digital information storage device facing it, and which is made in the form of a flat spiral coil and is fixed relative to the digital information storage device, located between the inductor and the digital storage device there is a movable electrically conductive armature, the flat surface of which is adjacent to the inductor by means of a fixing element, and a number of ordered impact elements, each of which is made in the form of a nail, the flat surface of which faces the electrically conductive armature, and the pointed end is directed towards the digital information storage device, while the electrically conductive armature and impact elements are mechanically connected to each other and made with the possibility of separation, characterized in that the inductor is made in the form of two installed each Opposite each other are identical coils in the form of an oval with two parallel straight sections, which are closed by rounded sections, and an inductor non-metallic plate located between the coils, to which coils are attached using epoxy resin, wound according to the magnetic field from a single tape wire with an internal bend located on the straight section passing through a slot in the inductor plate from one coil to another, and the electrical leads from each coil are located on one side of the inductor with rounded sections of the coils, the inductor is fixed relative to the flat digital drive with brackets covering their straight sections so that the bottom bracket covers the digital drive, and the upper bracket covers the upper electrically conductive anchor, the flat surface of which is adjacent to the inductor, the head of each impact element in the form of a nail is located between the lower electrically conductive anchor and the shock plate, and the rods shock elements are fixed in the holes of the shock plate, the upper and lower electrically conductive armatures, the inductor and shock plates are made in the form of rectangles, and the lower electrically conductive armature and the shock plate are interconnected by means of fasteners located in their corner sections, and perpendicularly fixed in the corner sections of the inductor plate, the guide posts pass through the guide holes of the anchors and the shock plate, the fixing element is made in the form of a flat spring, the middle part of which interacts with the shock plate, and its ends are fixed relative to the brackets, on opposite sides of the inductor plate, the winding frames of the coils installed opposite each other are fixed in the shape of an oval with two parallel straight sections, which are closed by rounded sections.

The disadvantages of these solutions include a bulky design, and the use of an induction heating process, which requires increased safety measures during operation.

The objective and technical result of the proposed invention is to create a method that is safe for users and does not adversely affect the associated equipment for guaranteed destruction of information from an embedded solid state drive in case of an unauthorized access threat using a simple and compact device.

The result obtained is achieved by the fact that according to the invention, a secure information storage device is proposed, including a microcontroller, a solid state drive containing non-volatile memory chips and a solid state drive controller and at least one voltage converter that is electrically connected to the microcontroller, non-volatile memory chips and a solid state drive controller and a method protection of information of an embedded solid state drive from unauthorized access in which, when an unauthorized access signal is received by the converter and the microcontroller, the microcontroller in turn supplies the memory chips and the controller of the solid state drive with a converter voltage that exceeds the maximum allowable voltage, which destroys the internal structures of the microcircuit and the controller core, as a result what is the physical destruction of the memory cells and the controller core of the embedded solid state drive.

The essence of the invention is illustrated by drawings:

Fig. 1 is a block diagram of a secure information storage device, where

1 - non-volatile memory chips,

2 - SSD controller,

3 - solid state drive,

4 - microcontroller,

5 - voltage converter

6 - electrical bus (control/power bus).

The invention is carried out as follows.

When an unauthorized access signal is received on the microcontroller 4 and the voltage converter 5, the program loaded into the microcontroller 4 turns on the channels (not shown) in turn, through which the voltage from the voltage converter 5 to the memory chips 1 of the solid state drive 3 is supplied with a voltage exceeding the maximum allowable voltage of the memory chip 1, as a result of which the cells of the memory chip 1 are physically destroyed. Damage to the core of the controller of the solid state drive 2 is carried out according to a similar principle. After the failure of all memory chips 1 and the controller of the solid state drive 2, the microcontroller 4 shuts down.

The proposed method of physical damage to the memory chips and the controller of a solid state drive allows for guaranteed destruction of the information stored in it in the event of a threat of unauthorized access.

The proposed method does not require the use of expensive additional equipment, which increases its manufacturability and economy. The absence of chemicals and explosives ensures the safety of the proposed method and device for users. The use of non-volatile memory chips and a high-voltage solid-state drive controller for physical destruction make it possible to securely destroy confidential information, and the absence of additional circuits and induction fields makes it possible to preserve the functionality of the interfaced equipment.

Claims (2)

1. A method for protecting information from unauthorized access, in which, upon receipt of a signal about unauthorized access to the converter and the microcontroller of a secure information storage device, the microcontroller in turn supplies the memory chips and the controller of the solid state drive with a converter voltage that exceeds the maximum allowable voltage of the memory chip, which destroys the internal structures of the microcircuit , as a result of which the physical destruction of memory cells and the core of the solid-state drive controller occurs. 2. A secure information storage device for implementing the method according to claim 1, including a microcontroller, a solid-state drive that contains non-volatile memory chips and a solid-state drive controller, and at least one voltage converter that is electrically connected to the microcontroller, non-volatile memory chips and a solid-state drive controller.

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