An optimized Bitsliced Masked Adder for ARM Thumb-2 Controllers

dc.contributor.authorPozzobon, Enrico
dc.contributor.authorRenner, Sebastian
dc.contributor.authorMottok, Jürgen
dc.contributor.authorMatoušek, Václav
dc.contributor.editorPinker, Jiří
dc.date.accessioned2022-11-04T09:13:28Z
dc.date.available2022-11-04T09:13:28Z
dc.date.issued2022
dc.description.abstract-translatedThe modular addition is used as a non-linear operation in ARX ciphers because it achieves the requirement of introducing non-linearity in a cryptographic primitive while only taking one clock cycle to execute on most modern archi- tectures. This makes ARX ciphers especially fast in software implementations, but comes at the cost of making it harder to protect against side-channel information leakages using Boolean masking: the best known 2-shares masked adder for ARM Thumb micro-controllers takes 83 instructions to add two 32-bit numbers together. Our approach is to operate in bitsliced mode, performing 32 additions in parallel on a 32-bit microcontroller. We show that, even after taking into account the cost of bitslicing before and after the encryption, it is possible to achieve a higher throughput on the tested ciphers (CRAX and ChaCha20) when operating in bitsliced mode. Furthermore, we prove that no first-order information leakage is happening in either simulated power traces and power traces acquired from real hardware, after sufficient countermeasures are put into place to guard against pipeline leakages.en
dc.format4 s.cs
dc.format.mimetypeapplication/pdf
dc.identifier.citation2022 International Conference on Applied Electronics: Pilsen, 6th – 7th September 2022, Czech Republic, p. 133-136.en
dc.identifier.isbn978-1-6654-9482-3
dc.identifier.urihttp://hdl.handle.net/11025/49867
dc.language.isoenen
dc.publisherFakulta elektrotechnická ZČUcs
dc.rights© IEEEen
dc.rights.accessopenAccessen
dc.subjectBooleovské maskovánícs
dc.subjectmodulární doplněkcs
dc.subjectboční kanálcs
dc.subjectrozkouskovanýcs
dc.subjectARM Thumbcs
dc.subject.translatedBoolean maskingen
dc.subject.translatedmodular additionen
dc.subject.translatedside- channelen
dc.subject.translatedbitsliceden
dc.subject.translatedARM Thumben
dc.titleAn optimized Bitsliced Masked Adder for ARM Thumb-2 Controllersen
dc.typekonferenční příspěvekcs
dc.typeconferenceObjecten
dc.type.statusPeer-revieweden
dc.type.versionpublishedVersionen

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