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EP1897017A1 - Systeme de protection par materiel se presentant sous la forme de plaquettes realisees en tant que demi-coquilles par emboutissage profond - Google Patents

Systeme de protection par materiel se presentant sous la forme de plaquettes realisees en tant que demi-coquilles par emboutissage profond

Info

Publication number
EP1897017A1
EP1897017A1 EP05756864A EP05756864A EP1897017A1 EP 1897017 A1 EP1897017 A1 EP 1897017A1 EP 05756864 A EP05756864 A EP 05756864A EP 05756864 A EP05756864 A EP 05756864A EP 1897017 A1 EP1897017 A1 EP 1897017A1
Authority
EP
European Patent Office
Prior art keywords
circuit
hardware
hardware protection
protected
substrate
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP05756864A
Other languages
German (de)
English (en)
Inventor
Karl Weidner
Anton Wimmer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Original Assignee
Siemens AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Siemens AG filed Critical Siemens AG
Publication of EP1897017A1 publication Critical patent/EP1897017A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00—Printed circuits
    • H05K1/02—Details
    • H05K1/0275—Security details, e.g. tampering prevention or detection
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
    • G06F21/70—Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer
    • G06F21/86—Secure or tamper-resistant housings
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00—Printed circuits
    • H05K1/02—Details
    • H05K1/0266—Marks, test patterns or identification means
    • H05K1/0268—Marks, test patterns or identification means for electrical inspection or testing
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00—Printed circuits
    • H05K1/02—Details
    • H05K1/0284—Details of three-dimensional rigid printed circuit boards
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00—Printed circuits
    • H05K1/02—Details
    • H05K1/14—Structural association of two or more printed circuits
    • H05K1/144—Stacked arrangements of planar printed circuit boards
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/10—Details of components or other objects attached to or integrated in a printed circuit board
    • H05K2201/10007—Types of components
    • H05K2201/10151—Sensor

Definitions

  • Electronic assemblies for highly sensitive data processing and data protection should be hardware-based against external manipulation, such as chemical or physical attacks (for example, mechanical, laser, fire, etc.), so that data can not be manipulated.
  • the object of the invention is to specify a hardware protection for electronic assemblies, which can be integrated into an electronics-compatible production.
  • hardware protection for a circuit to be protected includes a conductive or non-conductive planar substrate.
  • the planar substrate is not flat, but has a recessed central area, which is preferably completely surrounded by protruding areas.
  • Conductor structures for detecting access to the circuit to be protected are arranged on and / or in the substrate. In the event of unauthorized access to the circuit, the conductor structures are violated, so that a contact is made or interrupted and the access to the circuit is thus detected.
  • the projecting portions have an edge which is parallel to the recessed central portion.
  • the hardware contactor can be arranged on a circuit carrier, where it can be glued or soldered or generally contacted.
  • the substrate is designed in the form of a half-shell.
  • the substrate is preferably a deep-drawn circuit board and / or a film.
  • the conductor structures and the insulation spacings of the area sensor form a close-meshed structure in the form of a grid, in the form of a network, with meanders and / or with sectors in which the conductor structures, for example in the form of geometricalb structures run.
  • the insulation distance between two paths of the conductor structures in the form of conductor tracks or interconnects corresponds to conventional HDI (High Density Interconnection) structures. The same applies to the breadth of the gradients of the conductor structures.
  • the conductor structures can be produced by printing. This preferably takes place as long as the planar substrate is still flat, ie not deep-drawn yet.
  • the hardware contactor has connections for connecting detector means for detecting a violation of the conductor structures.
  • a planar substrate is provided with conductor patterns for detecting access to a circuit to be protected. Before or preferably after the two-dimensional substrate is placed in a mold, it comprises in the ⁇ a recessed central area, which is surrounded by projecting portions.
  • Advantageous embodiments of the method result from the advantageous embodiments of the hardware protection and vice versa.
  • a device comprises a hardware contactor of one of the previously described types and a circuit carrier for a circuit to be protected.
  • the hardware contactor is arranged with the projecting areas of its substrate on the circuit carrier, so that a space for the circuit to be protected results between the recessed central area and the circuit carrier.
  • the circuit carrier is or preferably includes a
  • Circuit-carrier board This is often also to protect on its back.
  • the device has in particular In particular, a second hardware protection according to one of the previously described types, which is arranged on the first hardware contactor opposite side of the circuit substrate.
  • the device preferably contains detector means for detecting a violation of the ladder structures by unauthorized access and / or unauthorized manipulation. So that the detector means are also protected, they can be designed as part of the circuit to be protected.
  • the overall assembly with the circuit lengths xn is used in particular in a tachograph, a driving data recorder and / or a rail or non-rail vehicle. However, it can also be used, for example, in ATMs, devices for financial institutions and aircraft. In particular, the use of the overall assembly with the circuit carriers is always advantageous when cryptographic keys to be protected (RSA, DES) are used. •: .-
  • Figure 1 shows an embodiment of a device with a
  • Circuit carrier on one side of which a hardware protection is arranged and on whose one side opposite side. second hardware protection is arranged;
  • FIG. 2 shows an alternative exemplary embodiment of a device with a circuit carrier, on the one side of which a hardware protection is arranged and on whose side opposite a second hardware contactor is arranged; 3 shows a substrate with conductor structures, from which a hardware protection is produced.
  • FIG. 1 shows a hardware protection 10 having a planar substrate 11, 12 which has a recessed central region 11 which is completely surrounded by projecting regions 12.
  • the substrate 11, 12 contains two prepregs 15, 16.
  • the first prepreg 15 forms the side of the substrate 11, 12 which points in the direction in which the central region 11 springs back.
  • the first conductor structure 13 of the two already mentioned conductor structures 13, 14 is arranged.
  • the second prepreg 16 is arranged on it, at the opposite side of the first conductor structure 13; the second conductor pattern 14 is arranged.
  • the hardware contactor 10 has connections 17 for contacting the conductor structures 13, 14 with further hardware protection conductor structures and with detector means for detecting injuries to the conductor structures 13, 14.
  • the hardware contactor 10 is arranged with its projecting areas 12, in particular with its edges, on a circuit carrier 20 for a circuit 21 to be protected.
  • the circuit substrate 20 is designed as a multilayer printed circuit board.
  • the circuit carrier 20 In the region in which the edges of the projecting regions 12, which run parallel to the central region, are arranged on the circuit carrier 20, the circuit carrier 20 in turn has circuit carrier conductor structures 22 for protecting the circuit to be protected, by means of which a front end - tiger drilling of the circuit substrate 20 is registrable. These are connected via the terminals 17 to the conductor structures 13, 14 of the hardware protection 10.
  • circuit carrier 20 has input and output terminals 23 outside the protected area, which are connected via lines to the circuit to be protected 21, which pass through the layers of the circuit carrier conductor structures 22 therethrough.
  • a second hardware protection 30 is arranged on the circuit carrier 20.
  • the second hardware protection 30 is constructed analogously to the first hardware protection 10 and also has a receding central region 31, which is surrounded by projecting regions 32.
  • Its substrate is e.g. is arranged with prepregs 35, 36, between which a first conductor structure 33 is arranged, which is connected via terminals 37 to a second conductor structure 34, which is arranged on the prepreg 35 and the conductor structure 33 opposite side of the prepreg 36.
  • the second hardware device 30 is rotated relative to the first hardware protector 10 by a defined angle.
  • the embodiment according to FIG. 2 differs from that according to FIG. 1 in that the two hardware protectors 10, 30 are not arranged on the multilayer printed circuit board of the circuit carrier 20, but directly against one another.
  • the circuit carrier 20 also contains, via its multilayer printed circuit board, in this case carriers 24 with which the circuit 21 to be protected and the multilayer printed circuit board of the circuit carrier 20 are held in space, which is located between the recessed central regions 11, 31 of the hardware protectors 10, 30 results.
  • FIG. 3 shows a planar substrate 41, 42, 44 with a rectangular, central area 41, which at its four Edges of areas 42, 44 is surrounded.
  • the regions 42, 44 in turn each have an area adjacent to the central area 41, which is angled towards it in a deep-drawing process, and an edge remote from the central area 41, which in turn is opposite the area of the area 42 adjacent to the central area 41 is angled so that it runs parallel to the central area 41 again.
  • Recesses 43 are provided between the regions 42 surrounding the central region 41, which openings open by deep drawing of the regions 42, 44, so that they can be welded together at their abutting edges.
  • the entire substrate 41, 42, 44 in the form of pre-structured and then deep-drawn Bohrtiklagen is printed with a meandering conductor structure.
  • the hardware manipulation protection is thus integrated into one or two three-dimensional half-shells which are formed, for example, as a deep-drawn part or deep-drawn parts and the circuit to be supported with their assembly either completely enclose .. ( Figure 2) or on the circuit board 20 to be protected assembly of the circuit 21st be mounted ( Figure 1).
  • planar printed circuit board 20 can be used as a replacement for the second half-shell. Then the electronic components are arranged on the side facing the first half shell and the hardware protection with its conductor structures is arranged on the opposite side.
  • circuit board 20 used for the assembly such as itself having a ladder structure network 22 in the areas where it is connected to the hardware protection by soldering or gluing.
  • the circuit board 20 is designed as a multi-layer circuit board, which contains a plurality of superimposed conductor layers in the areas mentioned, which protect against a frontal drilling.
  • the embodiment of the half-shells 11, 12; 31, 32 of the hardware protector 10 can be made to be made of a thermoformed printed circuit board material such as glass fiber reinforced FR4 prepreg, which is not yet cured in the initial state.
  • a thermoformed printed circuit board material such as glass fiber reinforced FR4 prepreg
  • films are possible, in particular RCC films (Resin Coatet Copper, partially pre-structured copper) or otherwise thermoformable films with or without MetallbeSichtung.
  • a close-meshed line or resistor network is structured on one or both sides.
  • the design of the protective network of conductor structures 13, 14; 33, 34 may once be done as a patterned metallic conduit network, for example photolithographically by etching or other suitable methods.
  • it can also be designed as a resistance network with conductor structures, in which case preferably carbon-filled resin systems are applied in one or both sides in screen or resistance pressure, thus producing the protective structure.
  • resistor network can also be applied by direct printing with carbon ink or similar suitable methods.
  • the design of the deep-drawn parts 11, 12; 31, 32 for the hardware protection may on the one hand be such that they are similar to multi-layer printed circuit boards, with the cables required for the protective wiring facing the module side and no outwardly leading electrical through-contacts. have on the outside of the half-shells.
  • all through-connections necessary for the functions of the hardware protective shells and of the module can lie within the protective network and be carried out either as buried through-contacts (burried vias).
  • And / or the necessary sub-assembly wiring layouts are implemented as SBU (Sequential Build Up) assemblies with laser drilled or otherwise created micro via vias.
  • the conductor structures of the cup-shaped hardware protection have Maisierpads in array arrangement, which serve later electrically either one of the two electronics assembly of the circuit to be protected hardware protective shells together with the circuit carrier of the circuit to be protected or on the multi-layer board of the circuit carrier of the circuit to be protected - to connect others.
  • the hardware gun shells include one or more conductive layers. These are, for example, designed as multilayer copper layers, each of which has very finely structured conductor tracks of the conductor structures 13, 14; 33, 34 included, which once closely mesh over the entire layer surface and also extend from layer to layer due to the configuration of the conductor tracks.
  • the conductor widths of one layer thereby cover isolation distances and a part of the associated conductor tracks of the associated layers separated by the dielectric. They are also wired through Burried Vias or ⁇ m vias to the module inside.
  • the configuration of a layer, for example, in the X-direction with such a meandering structure of thin copper interconnects and the underlying or overlying layer in the Y direction with such a structure separated by the dielectric layer results in a hardware protection of the circuit against mechanical manipulation in that these conductor tracks are interconnected to the inside of the module and thus are damaged due to the ultra-fine structuring. This is a line interruption, which is registered in the circuit.
  • two networks can be used and a generated by a manipulation short circuit of the two networks can be registered.
  • the embodiment of the conductor structures 13, 14; 33, 34 as the ultrafine conductor can be carried out preferably in carbon pressure (resistor paste pressure), as conductive paste 4Silberleitplaste) or ink printing with carbon ink in all imaginable structures which generate a dense mesh over a large area over at least one layer and which are electrically connected to the inside of the circuit ,
  • At least one of the two hardware gun shells 11, 12; 31, 32 can also be implemented in "flex-rigid" technology or a flex line for data transmission can be attached.
  • the dielectric distance of the hardware protective layers in the hardware protective shells should be selected such that, even with face-side drilling, the protective layer above and the underlying protective layer is damaged and thus the protective mechanism is triggered.
  • the electrical connection and mechanical connection of the hardware protective shells with each other or with the circuit carrier of the circuit to be protected can be done by soldering with subsequent sealing of the soldering gap by adhesive, laminating, by Maisierklebung or a similar method. Conventional connection methods are also usable.
  • the described hardware contactor has the advantage of a sensor system integrated into the hardware protective shells and optionally into the multilayer printed circuit board of the circuit carrier of the circuit to be protected, which can be manufactured with almost conventional "high-tech” printed circuit board technology and equipped on conventional assembly lines and electronic component manufacturing can be processed.
  • a sensor system integrated into the hardware protective shells and optionally into the multilayer printed circuit board of the circuit carrier of the circuit to be protected, which can be manufactured with almost conventional "high-tech” printed circuit board technology and equipped on conventional assembly lines and electronic component manufacturing can be processed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Computer Security & Cryptography (AREA)
  • Theoretical Computer Science (AREA)
  • Software Systems (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Structure Of Printed Boards (AREA)
  • Storage Device Security (AREA)

Abstract

L'invention concerne un système de protection par matériel destiné à un circuit à protéger, contenant un substrat présentant une zone centrale en retrait, entourée par des zones saillantes. Ledit système de protection par matériel présente ainsi essentiellement la forme d'une demi-coquille. Ledit système de protection par matériel comporte également des structures conductrices disposées sur et/ou dans le substrat, destinées à détecter un accès au circuit à protéger.
EP05756864A 2005-06-30 2005-06-30 Systeme de protection par materiel se presentant sous la forme de plaquettes realisees en tant que demi-coquilles par emboutissage profond Withdrawn EP1897017A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2005/053110 WO2007003227A1 (fr) 2005-06-30 2005-06-30 Systeme de protection par materiel se presentant sous la forme de plaquettes realisees en tant que demi-coquilles par emboutissage profond

Publications (1)

Publication Number Publication Date
EP1897017A1 true EP1897017A1 (fr) 2008-03-12

Family

ID=36202465

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05756864A Withdrawn EP1897017A1 (fr) 2005-06-30 2005-06-30 Systeme de protection par materiel se presentant sous la forme de plaquettes realisees en tant que demi-coquilles par emboutissage profond

Country Status (7)

Country Link
US (1) US20090109024A1 (fr)
EP (1) EP1897017A1 (fr)
JP (1) JP4740326B2 (fr)
CN (1) CN101248436B (fr)
BR (1) BRPI0520405A2 (fr)
RU (1) RU2382404C2 (fr)
WO (1) WO2007003227A1 (fr)

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GB2505292B (en) * 2011-01-28 2015-06-10 Novalia Ltd Printed article
FR2992756B1 (fr) * 2012-06-29 2015-06-26 Thales Sa Dispositif electronique
JP6276635B2 (ja) * 2014-04-14 2018-02-07 日本電産サンキョー株式会社 プリント基板およびカードリーダ
US9911012B2 (en) 2015-09-25 2018-03-06 International Business Machines Corporation Overlapping, discrete tamper-respondent sensors
US9894749B2 (en) 2015-09-25 2018-02-13 International Business Machines Corporation Tamper-respondent assemblies with bond protection
DE102015122000B4 (de) * 2015-12-16 2019-02-07 Fujitsu Client Computing Limited Anordnung und elektronisches Gerät
RU2734232C1 (ru) * 2017-01-27 2020-10-13 Аселсан Электроник Санайи Ве Тиджарет Аноним Ширкети Электронная система защиты зоны, содержащей конфиденциальную информацию
US11882645B2 (en) * 2021-10-22 2024-01-23 International Business Machines Corporation Multi chip hardware security module

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Also Published As

Publication number Publication date
BRPI0520405A2 (pt) 2009-05-05
CN101248436B (zh) 2012-08-22
WO2007003227A1 (fr) 2007-01-11
RU2008103340A (ru) 2009-08-10
RU2382404C2 (ru) 2010-02-20
JP4740326B2 (ja) 2011-08-03
JP2008545259A (ja) 2008-12-11
US20090109024A1 (en) 2009-04-30
CN101248436A (zh) 2008-08-20

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