IoT Device Security the Hard(ware) way

Markus Schuß, Johannes Iber, Jürgen Dobaj, Christian Josef Kreiner, Carlo Alberto Boano, Kay Uwe Römer

Publikation: ArbeitspapierDiscussion paperForschungBegutachtung

Abstract

Numerous attacks on Internet of Things (IoT) devices have shown that security cannot be neglected, even when building devices with just a few kB of memory. While it is common sense to run regular software updates and use state-of-the-art security on embedded or general purpose systems, this is often not possible with IoT devices. While many of those devices have the facilities to perform over-the-air updates, their memory and processing capabilities limit the use of state-of-the-art cryptography. Additionally, these devices often lack the capabilities to secure the cryptographic keys, the foundation on which the device's security is built, which makes them even more vulnerable to attacks. In this work, we present a pattern that allows even constrained devices to utilize state-of-the-art cryptographic functions, providing the foundation for a secure Internet of Things. The identified pattern presents the following characteristics: (i) confidentiality, by offloading the cryptographic functions and key storage; (ii) authenticity, by signing messages with the securely stored key using hash as well as signature functions, often too complex for such constrained devices on their own; (iii) integrity, a key requirement for connected sensors. As an added benefit, a faster detection of corrupted or tampered updates can also increase the availability of the system. This pattern is primarily targeted at IoT device vendors, who wish to keep their devices secure, by implementing security in hardware.
Originalspracheenglisch
PublikationsstatusUnveröffentlicht - 2018

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Data storage equipment
Cryptography
Availability
Hardware
Internet of things
Sensors
Processing
Air

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    IoT Device Security the Hard(ware) way. / Schuß, Markus; Iber, Johannes; Dobaj, Jürgen; Kreiner, Christian Josef; Boano, Carlo Alberto; Römer, Kay Uwe.

    2018.

    Publikation: ArbeitspapierDiscussion paperForschungBegutachtung

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    abstract = "Numerous attacks on Internet of Things (IoT) devices have shown that security cannot be neglected, even when building devices with just a few kB of memory. While it is common sense to run regular software updates and use state-of-the-art security on embedded or general purpose systems, this is often not possible with IoT devices. While many of those devices have the facilities to perform over-the-air updates, their memory and processing capabilities limit the use of state-of-the-art cryptography. Additionally, these devices often lack the capabilities to secure the cryptographic keys, the foundation on which the device's security is built, which makes them even more vulnerable to attacks. In this work, we present a pattern that allows even constrained devices to utilize state-of-the-art cryptographic functions, providing the foundation for a secure Internet of Things. The identified pattern presents the following characteristics: (i) confidentiality, by offloading the cryptographic functions and key storage; (ii) authenticity, by signing messages with the securely stored key using hash as well as signature functions, often too complex for such constrained devices on their own; (iii) integrity, a key requirement for connected sensors. As an added benefit, a faster detection of corrupted or tampered updates can also increase the availability of the system. This pattern is primarily targeted at IoT device vendors, who wish to keep their devices secure, by implementing security in hardware.",
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    AU - Schuß, Markus

    AU - Iber, Johannes

    AU - Dobaj, Jürgen

    AU - Kreiner, Christian Josef

    AU - Boano, Carlo Alberto

    AU - Römer, Kay Uwe

    PY - 2018

    Y1 - 2018

    N2 - Numerous attacks on Internet of Things (IoT) devices have shown that security cannot be neglected, even when building devices with just a few kB of memory. While it is common sense to run regular software updates and use state-of-the-art security on embedded or general purpose systems, this is often not possible with IoT devices. While many of those devices have the facilities to perform over-the-air updates, their memory and processing capabilities limit the use of state-of-the-art cryptography. Additionally, these devices often lack the capabilities to secure the cryptographic keys, the foundation on which the device's security is built, which makes them even more vulnerable to attacks. In this work, we present a pattern that allows even constrained devices to utilize state-of-the-art cryptographic functions, providing the foundation for a secure Internet of Things. The identified pattern presents the following characteristics: (i) confidentiality, by offloading the cryptographic functions and key storage; (ii) authenticity, by signing messages with the securely stored key using hash as well as signature functions, often too complex for such constrained devices on their own; (iii) integrity, a key requirement for connected sensors. As an added benefit, a faster detection of corrupted or tampered updates can also increase the availability of the system. This pattern is primarily targeted at IoT device vendors, who wish to keep their devices secure, by implementing security in hardware.

    AB - Numerous attacks on Internet of Things (IoT) devices have shown that security cannot be neglected, even when building devices with just a few kB of memory. While it is common sense to run regular software updates and use state-of-the-art security on embedded or general purpose systems, this is often not possible with IoT devices. While many of those devices have the facilities to perform over-the-air updates, their memory and processing capabilities limit the use of state-of-the-art cryptography. Additionally, these devices often lack the capabilities to secure the cryptographic keys, the foundation on which the device's security is built, which makes them even more vulnerable to attacks. In this work, we present a pattern that allows even constrained devices to utilize state-of-the-art cryptographic functions, providing the foundation for a secure Internet of Things. The identified pattern presents the following characteristics: (i) confidentiality, by offloading the cryptographic functions and key storage; (ii) authenticity, by signing messages with the securely stored key using hash as well as signature functions, often too complex for such constrained devices on their own; (iii) integrity, a key requirement for connected sensors. As an added benefit, a faster detection of corrupted or tampered updates can also increase the availability of the system. This pattern is primarily targeted at IoT device vendors, who wish to keep their devices secure, by implementing security in hardware.

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    KW - Patterns

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