Parity-Based Concurrent Error Detection Schemes for the ChaCha Stream Cipher
This work addresses fault protection for cryptographic implementations, which is incremental as it builds on existing parity-based methods for a specific cipher.
The paper tackled the problem of protecting the ChaCha stream cipher from transient and permanent faults by proposing two parity-based concurrent error detection schemes for the Quarterround, offering a trade-off between implementation overhead and error coverage, with the second approach detecting any odd-weight error on signals.
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.