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- W2022773963 abstract "With RFID-tags becoming a part of our everyday lives, the need for (ultra-)lightweight implementations of cryptographic algorithms are a major challenge for researchers and engineers alike. While purpose-built algorithms offer low hardware-footprint, their usage is often impeded by the need to comply with standards, most notably the Advanced Encryption Standard (AES). We take on this challenge by devising a new way to design inversion based S-Boxes, such as the Rijndael S-Box. The design is based on the observation that inversion in Galois-fields can be simulated using Linear Feedback Shift Registers (LFSRs), a fact that has been neglected until recently. Our contribution is threefold: First, we develop a general framework to describe inversion in arbitrary extension fields as linear-feedback structures. Second, we give alternative constructions for inversion circuits based on linear-feedback structures. Third we leverage our framework to find linear-feedback structures of minimal size for inversion in the Rijndael-field used in AES S-Boxes. Using our framework we are able to fully explore the design space and give the first description of an (unprotected) AES S-Box with an area requirement of less than 180 gate equivalents." @default.
- W2022773963 created "2016-06-24" @default.
- W2022773963 creator A5000493848 @default.
- W2022773963 date "2014-08-01" @default.
- W2022773963 modified "2023-09-26" @default.
- W2022773963 title "Ultra-Small Designs for Inversion-Based S-Boxes" @default.
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- W2022773963 doi "https://doi.org/10.1109/dsd.2014.37" @default.
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