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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="A specification for a Poseidon permutation."><meta name="keywords" content="rust, rustlang, rust-lang, Spec"><title>Spec in halo2_gadgets::poseidon::primitives - Rust</title><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../static.files/SourceSerif4-Regular-1f7d512b176f0f72.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../static.files/FiraSans-Regular-018c141bf0843ffd.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../static.files/FiraSans-Medium-8f9a781e4970d388.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../static.files/SourceCodePro-Regular-562dcc5011b6de7d.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../static.files/SourceSerif4-Bold-124a1ca42af929b6.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../static.files/SourceCodePro-Semibold-d899c5a5c4aeb14a.ttf.woff2"><link rel="stylesheet" href="../../../static.files/normalize-76eba96aa4d2e634.css"><link rel="stylesheet" href="../../../static.files/rustdoc-52c5db6f6f352e54.css" id="mainThemeStyle"><link rel="stylesheet" id="themeStyle" href="../../../static.files/light-4743e13df3dfe8c4.css"><link rel="stylesheet" disabled href="../../../static.files/dark-0e1b889528bd466b.css"><link rel="stylesheet" disabled href="../../../static.files/ayu-65289d5d067c7c66.css"><script id="default-settings" ></script><script src="../../../static.files/storage-d43fa987303ecbbb.js"></script><script defer src="sidebar-items.js"></script><script defer src="../../../static.files/main-3367e395607fafc1.js"></script><noscript><link rel="stylesheet" href="../../../static.files/noscript-13285aec31fa243e.css"></noscript><link rel="alternate icon" type="image/png" href="../../../static.files/favicon-16x16-8b506e7a72182f1c.png"><link rel="alternate icon" type="image/png" href="../../../static.files/favicon-32x32-422f7d1d52889060.png"><link rel="icon" type="image/svg+xml" href="../../../static.files/favicon-2c020d218678b618.svg"><link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/katex@0.10.0/dist/katex.min.css" integrity="sha384-9eLZqc9ds8eNjO3TmqPeYcDj8n+Qfa4nuSiGYa6DjLNcv9BtN69ZIulL9+8CqC9Y" crossorigin="anonymous">
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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="logo-container" href="../../../halo2_gadgets/index.html"><img class="rust-logo" src="../../../static.files/rust-logo-151179464ae7ed46.svg" alt="logo"></a><h2></h2></nav><nav class="sidebar"><a class="logo-container" href="../../../halo2_gadgets/index.html"><img class="rust-logo" src="../../../static.files/rust-logo-151179464ae7ed46.svg" alt="logo"></a><h2 class="location"><a href="#">Spec</a></h2><div class="sidebar-elems"><section><h3><a href="#required-methods">Required Methods</a></h3><ul class="block"><li><a href="#tymethod.constants">constants</a></li><li><a href="#tymethod.full_rounds">full_rounds</a></li><li><a href="#tymethod.partial_rounds">partial_rounds</a></li><li><a href="#tymethod.sbox">sbox</a></li><li><a href="#tymethod.secure_mds">secure_mds</a></li></ul><h3><a href="#implementors">Implementors</a></h3></section><h2><a href="index.html">In halo2_gadgets::poseidon::primitives</a></h2></div></nav><main><div class="width-limiter"><nav class="sub"><form class="search-form"><span></span><input class="search-input" name="search" aria-label="Run search in the documentation" autocomplete="off" spellcheck="false" placeholder="Click or press ‘S’ to search, ‘?’ for more options…" type="search"><div id="help-button" title="help" tabindex="-1"><a href="../../../help.html">?</a></div><div id="settings-menu" tabindex="-1"><a href="../../../settings.html" title="settings"><img width="22" height="22" alt="Change settings" src="../../../static.files/wheel-5ec35bf9ca753509.svg"></a></div></form></nav><section id="main-content" class="content"><div class="main-heading"><h1>Trait <a href="../../index.html">halo2_gadgets</a>::<wbr><a href="../index.html">poseidon</a>::<wbr><a href="index.html">primitives</a>::<wbr><a class="trait" href="#">Spec</a><button id="copy-path" onclick="copy_path(this)" title="Copy item path to clipboard"><img src="../../../static.files/clipboard-7571035ce49a181d.svg" width="19" height="18" alt="Copy item path"></button></h1><span class="out-of-band"><a class="srclink" href="../../../src/halo2_gadgets/poseidon/primitives.rs.html#33-54">source</a> · <button id="toggle-all-docs" title="collapse all docs">[<span>−</span>]</button></span></div><div class="item-decl"><pre class="rust"><code>pub trait Spec<F: Field, const T: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>, const RATE: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>>: <a class="trait" href="https://doc.rust-lang.org/nightly/core/fmt/trait.Debug.html" title="trait core::fmt::Debug">Debug</a> {
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fn <a href="#tymethod.full_rounds" class="fn">full_rounds</a>() -> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>;
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<span class="item-spacer"></span> fn <a href="#tymethod.partial_rounds" class="fn">partial_rounds</a>() -> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>;
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<span class="item-spacer"></span> fn <a href="#tymethod.sbox" class="fn">sbox</a>(val: F) -> F;
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<span class="item-spacer"></span> fn <a href="#tymethod.secure_mds" class="fn">secure_mds</a>() -> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>;
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<span class="item-spacer"></span> fn <a href="#tymethod.constants" class="fn">constants</a>() -> (<a class="struct" href="https://doc.rust-lang.org/nightly/alloc/vec/struct.Vec.html" title="struct alloc::vec::Vec">Vec</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.array.html">[F; T]</a>>, <a class="type" href="type.Mds.html" title="type halo2_gadgets::poseidon::primitives::Mds">Mds</a><F, T>, <a class="type" href="type.Mds.html" title="type halo2_gadgets::poseidon::primitives::Mds">Mds</a><F, T>);
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}</code></pre></div><details class="toggle top-doc" open><summary class="hideme"><span>Expand description</span></summary><div class="docblock"><p>A specification for a Poseidon permutation.</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="toggle method-toggle" open><summary><section id="tymethod.full_rounds" class="method has-srclink"><a class="srclink rightside" href="../../../src/halo2_gadgets/poseidon/primitives.rs.html#37">source</a><h4 class="code-header">fn <a href="#tymethod.full_rounds" class="fn">full_rounds</a>() -> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a></h4></section></summary><div class="docblock"><p>The number of full rounds for this specification.</p>
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<p>This must be an even number.</p>
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</div></details><details class="toggle method-toggle" open><summary><section id="tymethod.partial_rounds" class="method has-srclink"><a class="srclink rightside" href="../../../src/halo2_gadgets/poseidon/primitives.rs.html#40">source</a><h4 class="code-header">fn <a href="#tymethod.partial_rounds" class="fn">partial_rounds</a>() -> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a></h4></section></summary><div class="docblock"><p>The number of partial rounds for this specification.</p>
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</div></details><details class="toggle method-toggle" open><summary><section id="tymethod.sbox" class="method has-srclink"><a class="srclink rightside" href="../../../src/halo2_gadgets/poseidon/primitives.rs.html#43">source</a><h4 class="code-header">fn <a href="#tymethod.sbox" class="fn">sbox</a>(val: F) -> F</h4></section></summary><div class="docblock"><p>The S-box for this specification.</p>
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</div></details><details class="toggle method-toggle" open><summary><section id="tymethod.secure_mds" class="method has-srclink"><a class="srclink rightside" href="../../../src/halo2_gadgets/poseidon/primitives.rs.html#50">source</a><h4 class="code-header">fn <a href="#tymethod.secure_mds" class="fn">secure_mds</a>() -> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a></h4></section></summary><div class="docblock"><p>Side-loaded index of the first correct and secure MDS that will be generated by
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the reference implementation.</p>
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<p>This is used by the default implementation of <a href="trait.Spec.html#tymethod.constants" title="Spec::constants"><code>Spec::constants</code></a>. If you are
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hard-coding the constants, you may leave this unimplemented.</p>
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</div></details><details class="toggle method-toggle" open><summary><section id="tymethod.constants" class="method has-srclink"><a class="srclink rightside" href="../../../src/halo2_gadgets/poseidon/primitives.rs.html#53">source</a><h4 class="code-header">fn <a href="#tymethod.constants" class="fn">constants</a>() -> (<a class="struct" href="https://doc.rust-lang.org/nightly/alloc/vec/struct.Vec.html" title="struct alloc::vec::Vec">Vec</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.array.html">[F; T]</a>>, <a class="type" href="type.Mds.html" title="type halo2_gadgets::poseidon::primitives::Mds">Mds</a><F, T>, <a class="type" href="type.Mds.html" title="type halo2_gadgets::poseidon::primitives::Mds">Mds</a><F, T>)</h4></section></summary><div class="docblock"><p>Generates <code>(round_constants, mds, mds^-1)</code> corresponding to this specification.</p>
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</div></details></div><h2 id="implementors" class="small-section-header">Implementors<a href="#implementors" class="anchor">§</a></h2><div id="implementors-list"><section id="impl-Spec%3CFp%2C%203%2C%202%3E-for-P128Pow5T3" class="impl has-srclink"><a class="srclink rightside" href="../../../src/halo2_gadgets/poseidon/primitives/p128pow5t3.rs.html#15-39">source</a><a href="#impl-Spec%3CFp%2C%203%2C%202%3E-for-P128Pow5T3" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="trait.Spec.html" title="trait halo2_gadgets::poseidon::primitives::Spec">Spec</a><Fp, 3, 2> for <a class="struct" href="struct.P128Pow5T3.html" title="struct halo2_gadgets::poseidon::primitives::P128Pow5T3">P128Pow5T3</a></h3></section><section id="impl-Spec%3CFq%2C%203%2C%202%3E-for-P128Pow5T3" class="impl has-srclink"><a class="srclink rightside" href="../../../src/halo2_gadgets/poseidon/primitives/p128pow5t3.rs.html#41-65">source</a><a href="#impl-Spec%3CFq%2C%203%2C%202%3E-for-P128Pow5T3" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="trait.Spec.html" title="trait halo2_gadgets::poseidon::primitives::Spec">Spec</a><Fq, 3, 2> for <a class="struct" href="struct.P128Pow5T3.html" title="struct halo2_gadgets::poseidon::primitives::P128Pow5T3">P128Pow5T3</a></h3></section></div><script src="../../../implementors/halo2_gadgets/poseidon/primitives/trait.Spec.js" async></script></section></div></main><div id="rustdoc-vars" data-root-path="../../../" data-static-root-path="../../../static.files/" data-current-crate="halo2_gadgets" data-themes="" data-resource-suffix="" data-rustdoc-version="1.68.0-nightly (4c83bd03a 2023-01-19)" data-search-js="search-98d53477a794af0b.js" data-settings-js="settings-c3c521c753752a1a.js" data-settings-css="settings-ab1d4ae2ec52020e.css" ></div></body></html> |