Parity-Based Concurrent Error Detection Schemes for the ChaCha Stream Cipher

04/12/2019

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by   Viola Rieger, et al.

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We propose two parity-based concurrent error detection schemes for the Quarterround of the ChaCha stream cipher to protect from transient and permanent faults. They offer a trade-off between implementation overhead and error coverage. The second approach can detect any odd-weight error on the in-/output and intermediate signals of a Quarterround, while the first one requires less logic.