摘要:
Examples described herein relate to providing tamper evident connections between circuit boards is provided. For example, a method includes joining a connector on a first circuit board to a matching connector on a second board and joining a locking part mounted on the first circuit board to a locking structure on the second circuit board. The joining of the locking part to the locking structure cannot be reversed without causing substantial damage.
摘要:
Electronic circuits, electronic packages, and methods of fabrication are provided. The electronic circuit includes a multilayer circuit board, and a tamper-respondent sensor embedded within the circuit board. The tamper-respondent sensor defines, at least in part, a secure volume associated with the multilayer circuit board. In certain implementations, the tamper- respondent sensor includes multiple tamper-respondent layers embedded within the circuit board including, for instance, one or more tamper-respondent frames and one or more tamper- respondent mat layers, with the tamper-respondent frame(s) being disposed, at least in part, above the tamper-respondent mat layer(s), which together define the secure volume where extending into the multilayer circuit board. In certain embodiments, one or more of the tamper- respondent layers are divided into multiple, separate tamper-respondent circuit zones, with the tamper-respondent layers, including the circuit zones, being electrically connected to monitor circuitry within the secure volume.
摘要:
There is provided a security module for protecting circuit components from unauthorized access. The security module comprises a base printed circuit board, base PCB, for supporting circuit components to be protected, a frame printed circuit board, frame PCB, where the frame PCB is secured on top of the base PCB and defining a protective space for circuit components supported by the base PCB, and a lid printed circuit board, lid PCB, which is secured on top of the frame PCB, thereby providing a top closure to the protective space. First and third meshes are provided in the frame PCB, and a second mesh is provided in the lid PCB. The first, second and third meshes have a number of electrically conductive tracks, and one or more tamper detection paths are formed comprising a serial connection of one track from each of the first, second and third meshes. The security module may further comprise security circuitry arranged on the base PCB within the protective space, and for each tamper detection path the security circuitry has a pair of electrical signal input/outputs being electrically connected to the tamper detection path.
摘要:
A multi-layer Printed Circuit Board (PCB) holds a number of sections of serpentine track on two or more internal layers of a multi-layer PCB. The sections are connected in series with resistors between each section. One end of each of the resistors a connection to an analogue to digital converter is made. Attempts to drill through the PCB are likely to short the ground plane to one or more of the internal serpentine tracks, which will alter the voltages on the analogue to digital connections. In another embodiment, current flowing through the contacts of the smart card reader due to the presence of a "shim" is detected. Small value resistors are connected in series with either the Power connection or the Ground connection, or both. In another embodiment, circuitry detects wireless transmission of data from the card terminal from illicit transmitting equipment within the terminal. In another embodiments, dummy data wires or PCB tracks are employed that run close to and parallel with the wires or tracks that carry the actual data between the card and the microprocessor and are driven with dummy random data at a similar data rate to that used on the real data track(s) or wire(s).
摘要:
A multi-layer Printed Circuit Board (PCB) holds a number of sections of serpentine track on two or more internal layers of a multi-layer PCB. The sections are connected in series with resistors between each section. One end of each of the resistors a connection to an analogue to digital converter is made. Attempts to drill through the PCB are likely to short the ground plane to one or more of the internal serpentine tracks, which will alter the voltages on the analogue to digital connections. In another embodiment, current flowing through the contacts of the smart card reader due to the presence of a "shim" is detected. Small value resistors are connected in series with either the Power connection or the Ground connection, or both. In another embodiment, circuitry detects wireless transmission of data from the card terminal from illicit transmitting equipment within the terminal. In another embodiments, dummy data wires or PCB tracks are employed that run close to and parallel with the wires or tracks that carry the actual data between the card and the microprocessor and are driven with dummy random data at a similar data rate to that used on the real data track(s) or wire(s).
摘要:
A conformal electro-magnetic (EM) shield and a method of applying such a shield are provided herein as well as variations thereof. Variations include, but are not limited to, frequency-selective shielding, shields containing active and / or passive electronic components, and strippable shields that can easily be applied to and removed from underlying components. Variations of a shield structure include at least an insulating layer between the underling component and the shield, and shielding and / or capping layers disposed over the insulating layer.
摘要:
An electronic device has a chassis, and a printed wiring board (PWB) having a hole. A fastener is installed in the hole thereby securing the PWB to the chassis. A pair of conductive traces is formed in the PWB. A cap, being an amount of conductive glue, covers a part of the fastener and fills an electrically insulating gap between the two traces, to thereby form a conductive path that connects the two traces. A sensing circuit is coupled to the traces, to detect a change in impedance of the path and signal a tamper event alert. Other embodiments are also described and claimed.
摘要:
The invention relates to a protection device (20) for an electronic component (10) including at least one pin (14) to be electrically connected to an electronic system. The device includes at least one flexible printed circuit (22) including first and second opposite surfaces (46), a central portion (26) including a through opening (48) for receiving the pin, and flaps (28, 32, 36, 40) connected to the central portion. The printed circuit is made of two insulation layers and includes at least one first conducting track (52) between the two insulating layers, connecting the pin to the electronic system, a second conducting track (62) extending on the first surface, and a third conducting track (68, 72) extending on the second surface. The flaps are folded back at least partially onto each other in order to encapsulate the pin and to electrically connect the second and third conducting tracks.
摘要:
Methods, systems, IC packages, and electrical devices for providing data security for ICs. A substrate-on-substrate connector grid array package with an electrical shield can protect sensitive information in a secure IC from being accessed by physical attacks. A current flow in the electrical shield can be monitored for disturbances which can indicate an attack on the IC package.