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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="Gadget and chips for the Poseidon algebraic hash function."><meta name="keywords" content="rust, rustlang, rust-lang, poseidon"><title>halo2_gadgets::poseidon - 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 mod"><!--[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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<nav class="sidebar"><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="#">Module poseidon</a></h2><div class="sidebar-elems"><section><div class="block"><ul><li><a href="#structs">Structs</a></li><li><a href="#enums">Enums</a></li><li><a href="#traits">Traits</a></li></ul></div></section><div id="sidebar-vars" data-name="poseidon" data-ty="mod" 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">Module <a href="../index.html">halo2_gadgets</a>::<wbr><a class="mod" href="#">poseidon</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/poseidon.rs.html#1-298">source</a> · <a id="toggle-all-docs" href="javascript:void(0)" title="collapse all docs">[<span class="inner">−</span>]</a></span></div><details class="rustdoc-toggle top-doc" open><summary class="hideme"><span>Expand description</span></summary><div class="docblock"><p>Gadget and chips for the Poseidon algebraic hash function.</p>
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</div></details><h2 id="structs" class="small-section-header"><a href="#structs">Structs</a></h2>
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<div class="item-table"><div class="item-row"><div class="item-left module-item"><a class="struct" href="struct.Hash.html" title="halo2_gadgets::poseidon::Hash struct">Hash</a></div><div class="item-right docblock-short"><p>A Poseidon hash function, built around a sponge.</p>
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</div></div><div class="item-row"><div class="item-left module-item"><a class="struct" href="struct.Pow5Chip.html" title="halo2_gadgets::poseidon::Pow5Chip struct">Pow5Chip</a></div><div class="item-right docblock-short"><p>A Poseidon chip using an $x^5$ S-Box.</p>
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</div></div><div class="item-row"><div class="item-left module-item"><a class="struct" href="struct.Pow5Config.html" title="halo2_gadgets::poseidon::Pow5Config struct">Pow5Config</a></div><div class="item-right docblock-short"><p>Configuration for a <a href="struct.Pow5Chip.html" title="Pow5Chip"><code>Pow5Chip</code></a>.</p>
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</div></div><div class="item-row"><div class="item-left module-item"><a class="struct" href="struct.Sponge.html" title="halo2_gadgets::poseidon::Sponge struct">Sponge</a></div><div class="item-right docblock-short"><p>A Poseidon sponge.</p>
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</div></div><div class="item-row"><div class="item-left module-item"><a class="struct" href="struct.StateWord.html" title="halo2_gadgets::poseidon::StateWord struct">StateWord</a></div><div class="item-right docblock-short"><p>A word in the Poseidon state.</p>
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</div></div><div class="item-row"><div class="item-left module-item"><a class="struct" href="struct.Word.html" title="halo2_gadgets::poseidon::Word struct">Word</a></div><div class="item-right docblock-short"><p>A word over which the Poseidon permutation operates.</p>
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</div></div></div><h2 id="enums" class="small-section-header"><a href="#enums">Enums</a></h2>
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<div class="item-table"><div class="item-row"><div class="item-left module-item"><a class="enum" href="enum.PaddedWord.html" title="halo2_gadgets::poseidon::PaddedWord enum">PaddedWord</a></div><div class="item-right docblock-short"><p>A word from the padded input to a Poseidon sponge.</p>
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</div></div></div><h2 id="traits" class="small-section-header"><a href="#traits">Traits</a></h2>
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<div class="item-table"><div class="item-row"><div class="item-left module-item"><a class="trait" href="trait.PoseidonInstructions.html" title="halo2_gadgets::poseidon::PoseidonInstructions trait">PoseidonInstructions</a></div><div class="item-right docblock-short"><p>The set of circuit instructions required to use the Poseidon permutation.</p>
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</div></div><div class="item-row"><div class="item-left module-item"><a class="trait" href="trait.PoseidonSpongeInstructions.html" title="halo2_gadgets::poseidon::PoseidonSpongeInstructions trait">PoseidonSpongeInstructions</a></div><div class="item-right docblock-short"><p>The set of circuit instructions required to use the <a href="struct.Sponge.html" title="Sponge"><code>Sponge</code></a> and <a href="struct.Hash.html"><code>Hash</code></a> gadgets.</p>
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