ChipSHOUTER Users Manual
: Background and Quick Start
Guide
14
Background and Quick Start Guide
Electromagnetic Fault Injection (EMFI) is a way of injecting
transient faults into electronic systems without direct
electrical contact. This is accomplished by generating a
rapidly changing magnetic field directed at the Device under
Test (DuT). Changing magnetic fields cause induced currents
in the DuT, resulting in changing voltage levels on internal
signals. These changing voltage levels can cause incorrect
read (or write) operations, affecting results of latches,
registers, and more. Corrupting memory, resetting lock bits,
skipping instructions, and inserting faults into crypto-
graphic operations are all applications of EMFI. This can be
used for embedded security research, validating fault-
tolerance of algorithms, and validating fault-tolerance of
entire systems.
To use the ChipSHOUTER in its simplest configuration you
need only three things: the ChipSHOUTER itself, the included
19V power adapter, and one of the included injection tips.
Attach the tip to the high voltage output of the device, and
the power adapter to the DC input. Holding the ARM button
arms the device and pressing pulse generates a fault. Press-
ing ARM again will disarm the device. Application of the
device and more detail on performing injections is included
in the sections pertaining to the included targets.
