ChaCha20nosat, a symmetric cipher that resists being put into SAT form

Hacker News

There has been a recent discussion about the monoculture in crypto, and how ChaCha20 is a fallback to AES256. All current mainstream ciphers are relatively easy to transform into SAT form. This is a proposal for a fallback for that, using polymorphic constraints between the bits via sboxes that are part of the private key. Suggested changes to avoid redoing XChaCha20: since the sboxes could be the entire private key, what was the key could be a 256 bits nonce, and what was the nonce could be the counter, and what was the counter could be a stream index: such a modification could be called yadacha20. Small, self-contained super ugly, quickly written Rust code: this is an initial draft of a work in progress. The goal of this post is to get feedback as early as possible. Thank you.

Visit product View on Hacker NewsSep 25, 2023

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43%43% predicted probability of success on Hacker News, based on ML models trained on real launch data.

nativeThis product was originally launched on this platform.

Indie HackersIH features products with proven revenue · Missing: supports, reddit linkedin, podcasting

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Acquire.comPre-revenue stage for this audience · Missing: arr, mrr, revenue

14%14% predicted probability of success on Acquire.com, based on ML models trained on real launch data.

BetaListMay not resonate with beta-testers · Strong signals: crypto · Missing: web3, chat, cryptocurrency

9%9% predicted probability of success on BetaList, based on ML models trained on real launch data.

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