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<!DOCTYPE html><html lang="en"><head><meta charset="utf-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><meta name="generator" content="rustdoc"><meta name="description" content="Instructions to check the validity of a Merkle path of a given `PATH_LENGTH`. The hash function used is a Sinsemilla instance with `K`-bit words. The hash function can process `MAX_WORDS` words."><meta name="keywords" content="rust, rustlang, rust-lang, MerkleInstructions"><title>MerkleInstructions in halo2_gadgets::sinsemilla::merkle - Rust</title><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../SourceSerif4-Regular.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../FiraSans-Regular.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../FiraSans-Medium.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../SourceCodePro-Regular.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../SourceSerif4-Bold.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../SourceCodePro-Semibold.ttf.woff2"><link rel="stylesheet" type="text/css" href="../../../normalize.css"><link rel="stylesheet" type="text/css" href="../../../rustdoc.css" id="mainThemeStyle"><link rel="stylesheet" type="text/css" href="../../../ayu.css" disabled><link rel="stylesheet" type="text/css" href="../../../dark.css" disabled><link rel="stylesheet" type="text/css" href="../../../light.css" id="themeStyle"><script id="default-settings" ></script><script src="../../../storage.js"></script><script src="../../../crates.js"></script><script defer src="../../../main.js"></script>
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</head><body class="rustdoc trait"><!--[if lte IE 11]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="mobile-topbar"><button class="sidebar-menu-toggle">☰</button><a class="sidebar-logo" href="../../../halo2_gadgets/index.html"><div class="logo-container"><img class="rust-logo" src="../../../rust-logo.svg" alt="logo"></div>
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</a><h2 class="location"><a href="#">MerkleInstructions</a></h2><div class="sidebar-elems"><section><div class="block"><h3 class="sidebar-title"><a href="#required-methods">Required Methods</a></h3><ul><li><a href="#tymethod.hash_layer">hash_layer</a></li></ul></div><div class="block"><h3 class="sidebar-title"><a href="#implementors">Implementors</a></h3></div></section><h2 class="location"><a href="index.html">In halo2_gadgets::sinsemilla::merkle</a></h2><div id="sidebar-vars" data-name="MerkleInstructions" data-ty="trait" data-relpath=""></div><script defer src="sidebar-items.js"></script></div></nav><main><div class="width-limiter"><div class="sub-container"><a class="sub-logo-container" href="../../../halo2_gadgets/index.html"><img class="rust-logo" src="../../../rust-logo.svg" alt="logo"></a><nav class="sub"><div class="theme-picker hidden"><button id="theme-picker" aria-label="Pick another theme!" aria-haspopup="menu" title="themes"><img width="22" height="22" alt="Pick another theme!" src="../../../brush.svg"></button><div id="theme-choices" role="menu"></div></div><form class="search-form"><div class="search-container"><span></span><input class="search-input" name="search" autocomplete="off" spellcheck="false" placeholder="Click or press ‘S’ to search, ‘?’ for more options…" type="search"><button type="button" id="help-button" title="help">?</button><a id="settings-menu" href="../../../settings.html" title="settings"><img width="22" height="22" alt="Change settings" src="../../../wheel.svg"></a></div></form></nav></div><section id="main-content" class="content"><div class="main-heading">
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<h1 class="fqn"><span class="in-band">Trait <a href="../../index.html">halo2_gadgets</a>::<wbr><a href="../index.html">sinsemilla</a>::<wbr><a href="index.html">merkle</a>::<wbr><a class="trait" href="#">MerkleInstructions</a><button id="copy-path" onclick="copy_path(this)" title="Copy item path to clipboard"><img src="../../../clipboard.svg" width="19" height="18" alt="Copy item path"></button></span></h1><span class="out-of-band"><a class="srclink" href="../../../src/halo2_gadgets/sinsemilla/merkle.rs.html#24-47">source</a> · <a id="toggle-all-docs" href="javascript:void(0)" title="collapse all docs">[<span class="inner">−</span>]</a></span></div><div class="docblock item-decl"><pre class="rust trait"><code>pub trait MerkleInstructions<C: CurveAffine, const PATH_LENGTH: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>, const K: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>, const MAX_WORDS: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>>: <a class="trait" href="../trait.SinsemillaInstructions.html" title="trait halo2_gadgets::sinsemilla::SinsemillaInstructions">SinsemillaInstructions</a><C, K, MAX_WORDS> + <a class="trait" href="../../utilities/cond_swap/trait.CondSwapInstructions.html" title="trait halo2_gadgets::utilities::cond_swap::CondSwapInstructions">CondSwapInstructions</a><C::Base> + <a class="trait" href="../../utilities/trait.UtilitiesInstructions.html" title="trait halo2_gadgets::utilities::UtilitiesInstructions">UtilitiesInstructions</a><C::Base> + <a class="trait" href="../../../halo2_proofs/circuit/trait.Chip.html" title="trait halo2_proofs::circuit::Chip">Chip</a><C::Base> {
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fn <a href="#tymethod.hash_layer" class="fnname">hash_layer</a>(<br> &self, <br> layouter: impl <a class="trait" href="../../../halo2_proofs/circuit/trait.Layouter.html" title="trait halo2_proofs::circuit::Layouter">Layouter</a><C::Base>, <br> Q: C, <br> l: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>, <br> left: Self::<a class="associatedtype" href="../../utilities/trait.UtilitiesInstructions.html#associatedtype.Var" title="type halo2_gadgets::utilities::UtilitiesInstructions::Var">Var</a>, <br> right: Self::<a class="associatedtype" href="../../utilities/trait.UtilitiesInstructions.html#associatedtype.Var" title="type halo2_gadgets::utilities::UtilitiesInstructions::Var">Var</a><br> ) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><Self::<a class="associatedtype" href="../../utilities/trait.UtilitiesInstructions.html#associatedtype.Var" title="type halo2_gadgets::utilities::UtilitiesInstructions::Var">Var</a>, <a class="enum" href="../../../halo2_proofs/plonk/error/enum.Error.html" title="enum halo2_proofs::plonk::error::Error">Error</a>>;
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}</code></pre></div><details class="rustdoc-toggle top-doc" open><summary class="hideme"><span>Expand description</span></summary><div class="docblock"><p>Instructions to check the validity of a Merkle path of a given <code>PATH_LENGTH</code>.
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The hash function used is a Sinsemilla instance with <code>K</code>-bit words.
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The hash function can process <code>MAX_WORDS</code> words.</p>
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</div></details><h2 id="required-methods" class="small-section-header">Required Methods<a href="#required-methods" class="anchor"></a></h2><div class="methods"><details class="rustdoc-toggle" open><summary><div id="tymethod.hash_layer" class="method has-srclink"><div class="rightside"><a class="srclink" href="../../../src/halo2_gadgets/sinsemilla/merkle.rs.html#39-46">source</a></div><h4 class="code-header">fn <a href="#tymethod.hash_layer" class="fnname">hash_layer</a>(<br> &self, <br> layouter: impl <a class="trait" href="../../../halo2_proofs/circuit/trait.Layouter.html" title="trait halo2_proofs::circuit::Layouter">Layouter</a><C::Base>, <br> Q: C, <br> l: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>, <br> left: Self::<a class="associatedtype" href="../../utilities/trait.UtilitiesInstructions.html#associatedtype.Var" title="type halo2_gadgets::utilities::UtilitiesInstructions::Var">Var</a>, <br> right: Self::<a class="associatedtype" href="../../utilities/trait.UtilitiesInstructions.html#associatedtype.Var" title="type halo2_gadgets::utilities::UtilitiesInstructions::Var">Var</a><br>) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><Self::<a class="associatedtype" href="../../utilities/trait.UtilitiesInstructions.html#associatedtype.Var" title="type halo2_gadgets::utilities::UtilitiesInstructions::Var">Var</a>, <a class="enum" href="../../../halo2_proofs/plonk/error/enum.Error.html" title="enum halo2_proofs::plonk::error::Error">Error</a>></h4></div></summary><div class="docblock"><p>Compute MerkleCRH for a given <code>layer</code>. The hash that computes the root
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is at layer 0, and the hashes that are applied to two leaves are at
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layer <code>MERKLE_DEPTH - 1</code> = layer 31.</p>
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</div></details></div><h2 id="implementors" class="small-section-header">Implementors<a href="#implementors" class="anchor"></a></h2><div class="item-list" id="implementors-list"><section id="impl-MerkleInstructions%3CEpAffine%2C%20MERKLE_DEPTH%2C%20{%20sinsemilla%3A%3AK%20}%2C%20{%20sinsemilla%3A%3AC%20}%3E" class="impl has-srclink"><span class="rightside"><a class="srclink" href="../../../src/halo2_gadgets/sinsemilla/merkle/chip.rs.html#190-386">source</a></span><a href="#impl-MerkleInstructions%3CEpAffine%2C%20MERKLE_DEPTH%2C%20{%20sinsemilla%3A%3AK%20}%2C%20{%20sinsemilla%3A%3AC%20}%3E" class="anchor"></a><h3 class="code-header in-band">impl<Hash, Commit, F, const MERKLE_DEPTH: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>> <a class="trait" href="trait.MerkleInstructions.html" title="trait halo2_gadgets::sinsemilla::merkle::MerkleInstructions">MerkleInstructions</a><EpAffine, MERKLE_DEPTH, { sinsemilla::K }, { sinsemilla::C }> for <a class="struct" href="chip/struct.MerkleChip.html" title="struct halo2_gadgets::sinsemilla::merkle::chip::MerkleChip">MerkleChip</a><Hash, Commit, F> <span class="where fmt-newline">where<br> Hash: <a class="trait" href="../trait.HashDomains.html" title="trait halo2_gadgets::sinsemilla::HashDomains">HashDomains</a><Affine>,<br> F: <a class="trait" href="../../ecc/trait.FixedPoints.html" title="trait halo2_gadgets::ecc::FixedPoints">FixedPoints</a><Affine>,<br> Commit: <a class="trait" href="../trait.CommitDomains.html" title="trait halo2_gadgets::sinsemilla::CommitDomains">CommitDomains</a><Affine, F, Hash>, </span></h3></section></div><script type="text/javascript" src="../../../implementors/halo2_gadgets/sinsemilla/merkle/trait.MerkleInstructions.js" async></script></section></div></main><div id="rustdoc-vars" data-root-path="../../../" data-current-crate="halo2_gadgets" data-themes="ayu,dark,light" data-resource-suffix="" data-rustdoc-version="1.62.0-nightly (30f386087 2022-05-05)" ></div>
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