Various embedded systems, such as unattended ground sensors (UGS), are deployed in dangerous areas, where they are
subject to compromise. Since numerous systems contain a network of devices that communicate with each other (often
times with commercial off the shelf [COTS] radios), an adversary is able to intercept messages between system devices,
which jeopardizes sensitive information transmitted by the system (e.g. location of system devices). Secret key
algorithms such as AES are a very common means to encrypt all system messages to a sufficient security level, for
which lightweight implementations exist for even very resource constrained devices. However, all system devices must
use the appropriate key to encrypt and decrypt messages from each other. While traditional public key algorithms
(PKAs), such as RSA and Elliptic Curve Cryptography (ECC), provide a sufficiently secure means to provide
authentication and a means to exchange keys, these traditional PKAs are not suitable for very resource constrained
embedded systems or systems which contain low reliability communication links (e.g. mesh networks), especially as the
size of the network increases. Therefore, most UGS and other embedded systems resort to pre-placed keys (PPKs) or
other naïve schemes which greatly reduce the security and effectiveness of the overall cryptographic approach. McQ has
teamed with the Cryptographic Engineering Research Group (CERG) at George Mason University (GMU) to develop
an approach using revolutionary cryptographic techniques that provides both authentication and encryption, but on
resource constrained embedded devices, without the burden of large amounts of key distribution or storage.
KEYWORDS: Analog electronics, Data storage, Transducers, Prototyping, Power supplies, Electronics, Aluminum, Manufacturing, Human-machine interfaces, Sensors
McQ has developed a miniaturized, programmable, ruggedized data collector intended for use in weapon testing or data
collection exercises that impose severe stresses on devices under test. The recorder is designed to survive these stresses
which include acceleration and shock levels up to 100,000 G. The collector acquires and stores up to four channels of
signal data to nonvolatile memory for later retrieval by a user. It is small (< 7 in3), light weight (< 1 lb), and can operate
from various battery chemistries. A built-in menuing system, accessible via a USB interface, allows the user to configure
parameters of the recorder operation, such as channel gain, filtering, and signal offsets, and also to retrieve recorded data
for analysis. An overview of the collector, its features, performance, and potential uses, is presented.
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