RU2542914C1 - Authorisation module with electronic card key - Google Patents

Abstract

FIELD: information technologies.

SUBSTANCE: authorisation module with an electronic card key comprises an electronic card key. The electronic card key has a hole in a card, and the electronic key has a shape of a cylinder with ends from electroconducting material, and facilities for fixation of the electronic key in the opening of the card; the shape of the input window in the external metal body and the window in the inner shell corresponds to the shape of the cross section in the place of location of the electronic card key with the plane stretching via the centre of the electronic key; in the inner shell near the output opening there are at least two contacts fixed that interact with ends of the electronic key connected with the outputs of a microcircuit chip; outputs from two contacts are connected to a slot filter for connection of the interface.

EFFECT: simplified design of a card and reading device, exclusion of the possibility to read information from a card by electromagnetic radiation produced in process of information transfer from the card.

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Description

The invention relates to electronics, in particular to electronic keys used to authorize users in access control systems for computers or communication tools included in a local network, as well as in premises.

A known electronic key (patent RU No. 24597 U1 of 02/18/2002) having a code combination in a microcircuit placed inside its case, made in the form of a tablet, which is fixed in a holder made of insulating material.

Known electronic card (patent FR No. 2949639 from 09/03/2009) with a built-in microcircuit, antenna and contact device that allows reading information when entering the card into the reader. For contactless transmission of information through the antenna, a key is activated in the card that is triggered by pressing it.

Known electronic key card (application US No. 2009/0212903 of February 25, 2009, US patent No. 8156776 of May 27, 2009, application JP Publ. No. 2009203640 A of February 26, 2008), having two areas: the area of the communication chip with a code a combination comprising an authentication code and a wireless radiator in the form of a circular antenna with a communication controller integrated in the object, and a region of visually perceptible data recording in the form of a symbol, graphic design or printed in font.

A disadvantage of the known key card is the ability to intercept and decode the emitted signals with an electronic key when establishing communication with the access object.

A disadvantage of the known devices is that they do not protect the electronic key from reading by the attackers of electromagnetic radiation.

A disadvantage of the known devices is that they allow unauthorized reading of information with remote access, since electromagnetic radiation from an electronic key or card is not shielded.

A card reader with an integrated microcircuit is known (US patent No. 7632151 of October 19, 2007). The device has:

- a board with a microcircuit and a USB interface;

- an electrically insulated inner shell covering the front of the board with the formation of the contact space for the card with contacts electrically connected to the chip of the card for reading the card;

- a guiding device with stops connected to the back of the board to direct the card to the contacts and set the position of the card relative to the contacts;

- an external metal shield that shields electromagnetic radiation, covering the board, contacts, and a guiding device with an output for the USB interface.

The disadvantage of this card reader is the design complexity due to the structure of the card, and the possibility of unauthorized access to read information.

The technical task of the invention is to simplify the design of the card and its reading device, as well as the exclusion of the ability to read information from the card due to electromagnetic radiation generated during the transmission of information from the card.

The technical problem is solved in the authorization module with an electronic key card containing an electronic key card with a chip with a code combination; a reading device having an electrically insulated inner shell with electric contacts fixed in it, guides with an emphasis for a key card located on the sides of the inner shell, the inner space in the inner shell bounded on both sides by the front and rear walls, and two perpendicular to them sides - guides, the entrance window to the inner space, the shape of which corresponds to the shape of a key card; an external metal shielding case in the form of a parallelepiped, covering the inner shell and having an input window in the front wall, the shape of which corresponds to the cross section of the key card, and an outlet in the back wall with a filter connector for connecting the interface, while the electronic key card has a hole in the card, and the electronic key with a built-in microcircuit made in the form of a cylinder with ends of electrically conductive material connected to the microcircuit has means of its fastening in the hole of the car s; the shape of the input window in the outer metal case and the window in the inner shell of the reader corresponds to the cross-sectional shape of the electronic key card at the location of the electronic key with a plane passing through the center of the electronic key; in the inner shell near the outlet, at least two contacts are fixed, interacting with the ends of the electronic key, while the conclusions from the contacts are connected to the filter connector for connecting the interface.

Means of fastening the electronic key in the card are made in the form of a collar on its cylindrical surface, an annular groove made at a distance equal to the thickness of the card and an elastic ring installed in the annular groove.

To determine the ownership of the card, the electronic key card has on the card the area of visually perceived data recording in the form of text, digital, alphabetic or other characters.

The technical effect achieved by the proposed design of the electronic key and shielded reading device, simplifying the design and eliminating unauthorized access to read information from the outside, is achieved due to a combination of distinctive features: the electronic key card has a hole in the card, and the electronic key with an integrated microcircuit made in the form of a cylinder with ends of electrically conductive material connected to the microcircuit, has means for its fastening in the hole of the card; the shape of the input window in the outer metal case and the window in the inner shell of the reader corresponds to the cross-sectional shape of the electronic key card at the location of the electronic key with a plane passing through the center of the electronic key; in the inner shell near the outlet, at least two contacts are fixed, interacting with the ends of the electronic key, while the conclusions from the contacts are connected to the filter connector for connecting the interface.

This set of distinguishing features of the electronic key and the reader is not found during the patent information search, therefore, the invention meets the criterion of "novelty."

The solution to the technical problem does not follow explicitly from the prior art, therefore, it meets the criterion of ″ inventive step ″.

Figure 1 shows an electronic key card.

In Fig.2 - view A in Fig.1.

Figure 3 - shielded reader with installed electronic key card, front view.

In Fig.4 is a longitudinal section of a shielded reader with installed electronic key card, shown in Fig.3.

The authorization module with the electronic key card 1 (FIGS. 1-4) has a card 1a with an electronic key 1b with an integrated chip with a code combination; a reader 2 (FIGS. 3, 4) having an electrically insulated inner shell 3 with electrical contacts 4 and 5 fixed therein; guides 6 and 7 with an emphasis 8 for the key card 1, located on the sides of the shell 3; the inner space 9 in the inner shell 3, limited on both sides by the walls 10 and 11 of the shell 3, and on two sides perpendicular to them, by guides 6 and 7, having an input window 12, the shape of which corresponds to the shape of the key card 1; an external metal shielding case 13 in the form of a parallelepiped, covering the inner shell 3 and having an input window 14 in the front wall 15, the shape of which corresponds to the cross section of the key card 1, and the outlet 16 with a filter connector 17 for connecting an interface (not shown), wherein the electronic key card 1 (Fig. 1) has an opening 18 in the card 1a, and the electronic key 1b has the shape of a cylinder with ends made of electrically conductive material, and means 19 for fixing the electronic key 1b in the hole 18 of the card 1a, the shape of the input window 14 outwardly m metal case 13 and the windows 12 in the inner shell 3 correspond to the cross-sectional shape of the key card 1 at the location of the electronic key card 1 with a plane passing through the center of the electronic key 1b, at least two are fixed in the inner shell 3 near the outlet 16 contact 4 and 5, interacting with the ends of the electronic key 1b, connected to the terminals of the chip (not shown); the conclusions from two pins 4 and 5 are connected to the filter connector 17 for connecting an interface (not shown).

Means 19 of fastening the electronic key 1b in the card 1a can be made in the form of a shoulder 20 (Fig. 1) on the cylindrical surface of the key 1b and the annular groove 21, made at a distance equal to the thickness of the card 1a and the elastic ring 22 installed in the annular groove 21.

The key card 1 has on the card 1a an area 22 (FIG. 2) of a visually perceptible data record in the form of text, digital, alphabetic or other characters.

For shielding electromagnetic radiation from the key card 1 towards the input window 12, the distance from the input window 12 to the pin location of contacts 4 and 5 exceeds the value equal to four times the maximum size of the electronic key 1b.

The reader 2 can be installed in a system unit (not shown) or connected to an electronic device via an interface (not shown) using a shielded twisted pair cable (not shown).

Claims (3)

1. The authorization module with an electronic key card, containing an electronic key card with a chip with a code combination; a reading device having an electrically insulated inner shell with electric contacts fixed in it, guides with an emphasis for a key card located on the sides of the inner shell, the inner space in the inner shell bounded on both sides by the front and rear walls, and two perpendicular to them sides - guides, the entrance window to the inner space, the shape of which corresponds to the shape of a key card; an external metal shielding case in the form of a parallelepiped, covering the inner shell and having an input window in the front wall, the shape of which corresponds to the cross section of the key card, and an outlet in the rear wall with a filter connector for connecting the interface, characterized in that the electronic key card has a hole in the card, and the electronic key with a chip integrated in it, made in the form of a cylinder with ends of electrically conductive material connected to the chip, has means for attaching it to Card Holes the shape of the input window in the outer metal case and the window in the inner shell of the reader corresponds to the cross-sectional shape of the electronic key card at the location of the electronic key with a plane passing through the center of the electronic key; in the inner shell near the outlet, at least two contacts are fixed, interacting with the ends of the electronic key, while the conclusions from the contacts are connected to the filter connector for connecting the interface. 2. The authorization module according to claim 1, characterized in that the means of fastening the electronic key in the card are made in the form of a shoulder on its cylindrical surface, an annular groove made at a distance equal to the thickness of the card and an elastic ring installed in the annular groove. 3. The authorization module according to claim 1, characterized in that the electronic key card has on the card an area of visually perceptible data recording in the form of text, digital, alphabetic or other characters.

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