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How to Culture, Record and Stimulate Neuronal Networks on Micro-electrode Arrays MEAs
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MEAS: memory encryption and authentication secure against side-channel attacks.

Thomas Unterluggauer1, Mario Werner1, Stefan Mangard1

  • 1Institute for Applied Information Processing and Communications, Graz University of Technology, Inffeldgasse 16a, 8010 Graz, Austria.

Journal of Cryptographic Engineering
|June 25, 2019
PubMed
Summary
This summary is machine-generated.

We introduce Meas, a novel memory encryption and authentication scheme that prevents differential power analysis (DPA) attacks. Meas offers robust security against DPA for various memory types with comparable overhead to existing methods.

Keywords:
AuthenticationDPAEncryptionMemorySide-channel attacks

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Area of Science:

  • Computer Security
  • Cryptography
  • Hardware Security

Background:

  • Memory encryption is crucial for protecting sensitive data from physical attackers.
  • Existing memory encryption schemes are vulnerable to differential power analysis (DPA) attacks.
  • There is a need for memory encryption solutions resilient to DPA.

Purpose of the Study:

  • To present Meas, the first Memory Encryption and Authentication Scheme designed to be secure against DPA attacks.
  • To demonstrate that Meas can thwart both first-order and higher-order DPA.
  • To evaluate the practical overhead of Meas on hardware.

Main Methods:

  • Meas combines fresh re-keying and authentication trees to store encryption keys.
  • Keys are limited to encrypting at most two plaintext values to counter first-order DPA.
  • Plaintext masking is employed to prevent higher-order DPA.
  • Concrete instances of Meas for RAM are based on lightweight primitives like Ascon, PRINCE, and QARMA.

Main Results:

  • Meas provides security against first-order DPA without requiring DPA-protected cryptographic primitives.
  • Meas prevents higher-order DPA through plaintext masking, independent of cipher implementation.
  • Implemented Meas instances on a Zynq XC7Z020 FPGA.
  • The evaluated Meas instances exhibit memory and performance overhead comparable to non-DPA-protected authentication techniques.

Conclusions:

  • Meas offers a viable solution for DPA-resilient memory encryption and authentication.
  • The scheme is applicable to various memory types, including NVM and RAM.
  • Meas achieves its security goals with practical performance and overhead.