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class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/iquerejeta" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Iñigo Querejeta Azurmendi</span></a></div><small class="avatar__subtitle" itemprop="description">Cardano Lead Cryptography Engineer</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading"></a></h2><p>The open fronts that the crypto team is working on are:</p><ul><li>Mithril: Helper functions finished. Continue preparing a RFP for an audit of mithril's core library (decided to add audit of KES). Design proposal for viable registration.</li><li>cardano-base: Praos to PraosBatchCompat ready. KES secure forgetting finished, but holding merge for delivery strategy (breaking changes). Tested real world SNARK verification on plutus.</li><li>KES agent: using snockets and making things testable in IOSim</li><li>MuSig2: started implementation in rust.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading"></a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="mithril">Mithril<a class="hash-link" href="#mithril" title="Direct link to heading"></a></h3><ul><li>Transmute helpers merged <a href="https://github.com/input-output-hk/mithril/pull/722" target="_blank" rel="noopener noreferrer">PR#722</a></li><li>We have progressed with the RFP document for the mithril-stm library. Progressing with description of octopus algorithm. Included KES in scope. </li><li>We are working in a modification of KES to require caller to allocate the secret key buffer.</li><li>Proposed a solution for signer registration of <a href="https://github.com/input-output-hk/mithril/wiki/Mithril-registration-procedure#cost" target="_blank" rel="noopener noreferrer">Mithril</a>.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-base">cardano-base<a class="hash-link" href="#cardano-base" title="Direct link to heading"></a></h3><ul><li>Progressing with BLS12-381. Worked with plutus team to have a plutus script verifying a Groth16 <a href="https://github.com/input-output-hk/plutus/tree/kwxm/BLS12_381/prototype/plutus-benchmark/bls-benchmarks" target="_blank" rel="noopener noreferrer">proof</a>.<ul><li>Results are promising, with using only 23% of the execution budget to verify a realistic proof. </li><li>Next step is to build a real world use case (and not use a dummy proof). Projects being considered are Sidechains, Hydra or Mithril.</li></ul></li><li>KES secure forgetting merge is being held off, due to breaking changes. We are considering handling several branches in cardano-base for this.</li><li>Conversion finally merged <a href="https://github.com/input-output-hk/cardano-base/pull/344" target="_blank" rel="noopener noreferrer">PR#344</a>.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="kes-agent">KES agent<a class="hash-link" href="#kes-agent" title="Direct link to heading"></a></h3><ul><li>Figuring out how to use sockets to write directly into the file descriptor. Digging into the sockets implementation</li><li>Figuring out how to go from fake file descriptor to write the raw bytes</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="musig2">MuSig2<a class="hash-link" href="#musig2" title="Direct link to heading"></a></h3><ul><li>Started implementing MuSig2 in Rust using the Ristretto prime order group. Still experimental.</li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/crypto">crypto</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-02-17-crypto.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-02-21-db-sync"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">DB-sync Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-02-17-goedel"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Goedel Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High level summary</a></li><li><a href="#low-level-summary" class="table-of-contents__link toc-highlight">Low level summary</a><ul><li><a href="#mithril" class="table-of-contents__link toc-highlight">Mithril</a></li><li><a href="#cardano-base" class="table-of-contents__link toc-highlight">cardano-base</a></li><li><a href="#kes-agent" class="table-of-contents__link toc-highlight">KES agent</a></li><li><a href="#musig2" class="table-of-contents__link toc-highlight">MuSig2</a></li></ul></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. 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