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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 random number generator that can be explicitly seeded."><title>SeedableRng in rand - Rust</title><script>if(window.location.protocol!=="file:")document.head.insertAdjacentHTML("beforeend","SourceSerif4-Regular-6b053e98.ttf.woff2,FiraSans-Italic-81dc35de.woff2,FiraSans-Regular-0fe48ade.woff2,FiraSans-MediumItalic-ccf7e434.woff2,FiraSans-Medium-e1aa3f0a.woff2,SourceCodePro-Regular-8badfe75.ttf.woff2,SourceCodePro-Semibold-aa29a496.ttf.woff2".split(",").map(f=>`<link rel="preload" as="font" type="font/woff2"href="../static.files/${f}">`).join(""))</script><link rel="stylesheet" href="../static.files/normalize-9960930a.css"><link rel="stylesheet" href="../static.files/rustdoc-ca0dd0c4.css"><meta name="rustdoc-vars" data-root-path="../" data-static-root-path="../static.files/" data-current-crate="rand" data-themes="" data-resource-suffix="" data-rustdoc-version="1.93.1 (01f6ddf75 2026-02-11) (Arch Linux rust 1:1.93.1-1)" data-channel="1.93.1" data-search-js="search-9e2438ea.js" data-stringdex-js="stringdex-a3946164.js" data-settings-js="settings-c38705f0.js" ><script src="../static.files/storage-e2aeef58.js"></script><script defer src="sidebar-items.js"></script><script defer src="../static.files/main-a410ff4d.js"></script><noscript><link rel="stylesheet" href="../static.files/noscript-263c88ec.css"></noscript><link rel="icon" href="https://www.rust-lang.org/favicon.ico"></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]--><rustdoc-topbar><h2><a href="#">SeedableRng</a></h2></rustdoc-topbar><nav class="sidebar"><div class="sidebar-crate"><a class="logo-container" href="../rand/index.html"><img src="https://www.rust-lang.org/logos/rust-logo-128x128-blk.png" alt="logo"></a><h2><a href="../rand/index.html">rand</a><span class="version">0.9.2</span></h2></div><div class="sidebar-elems"><section id="rustdoc-toc"><h2 class="location"><a href="#">Seedable<wbr>Rng</a></h2><h3><a href="#required-associated-types">Required Associated Types</a></h3><ul class="block"><li><a href="#associatedtype.Seed" title="Seed">Seed</a></li></ul><h3><a href="#required-methods">Required Methods</a></h3><ul class="block"><li><a href="#tymethod.from_seed" title="from_seed">from_seed</a></li></ul><h3><a href="#provided-methods">Provided Methods</a></h3><ul class="block"><li><a href="#method.from_os_rng" title="from_os_rng">from_os_rng</a></li><li><a href="#method.from_rng" title="from_rng">from_rng</a></li><li><a href="#method.seed_from_u64" title="seed_from_u64">seed_from_u64</a></li><li><a href="#method.try_from_os_rng" title="try_from_os_rng">try_from_os_rng</a></li><li><a href="#method.try_from_rng" title="try_from_rng">try_from_rng</a></li></ul><h3><a href="#foreign-impls">Implementations on Foreign Types</a></h3><ul class="block"><li><a href="#impl-SeedableRng-for-ChaCha8Core" title="ChaCha8Core">ChaCha8Core</a></li><li><a href="#impl-SeedableRng-for-ChaCha8Rng" title="ChaCha8Rng">ChaCha8Rng</a></li><li><a href="#impl-SeedableRng-for-ChaCha12Core" title="ChaCha12Core">ChaCha12Core</a></li><li><a href="#impl-SeedableRng-for-ChaCha12Rng" title="ChaCha12Rng">ChaCha12Rng</a></li><li><a href="#impl-SeedableRng-for-ChaCha20Core" title="ChaCha20Core">ChaCha20Core</a></li><li><a href="#impl-SeedableRng-for-ChaCha20Rng" title="ChaCha20Rng">ChaCha20Rng</a></li></ul><h3><a href="#dyn-compatibility">Dyn Compatibility</a></h3><h3><a href="#implementors">Implementors</a></h3></section><div id="rustdoc-modnav"><h2 class="in-crate"><a href="index.html">In crate rand</a></h2></div></div></nav><div class="sidebar-resizer" title="Drag to resize sidebar"></div><main><div class="width-limiter"><section id="main-content" class="content"><div class="main-heading"><div class="rustdoc-breadcrumbs"><a href="index.html">rand</a></div><h1>Trait <span class="trait">Seedable<wbr>Rng</span> <button id="copy-path" title="Copy item path to clipboard">Copy item path</button></h1><rustdoc-toolbar></rustdoc-toolbar><span class="sub-heading"><a class="src" href="../src/rand_core/lib.rs.html#371">Source</a> </span></div><pre class="rust item-decl"><code>pub trait SeedableRng: <a class="trait" href="https://doc.rust-lang.org/1.93.1/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a> {
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type <a href="#associatedtype.Seed" class="associatedtype">Seed</a>: <a class="trait" href="https://doc.rust-lang.org/1.93.1/core/clone/trait.Clone.html" title="trait core::clone::Clone">Clone</a> + <a class="trait" href="https://doc.rust-lang.org/1.93.1/core/default/trait.Default.html" title="trait core::default::Default">Default</a> + <a class="trait" href="https://doc.rust-lang.org/1.93.1/core/convert/trait.AsRef.html" title="trait core::convert::AsRef">AsRef</a><[<a class="primitive" href="https://doc.rust-lang.org/1.93.1/std/primitive.u8.html">u8</a>]> + <a class="trait" href="https://doc.rust-lang.org/1.93.1/core/convert/trait.AsMut.html" title="trait core::convert::AsMut">AsMut</a><[<a class="primitive" href="https://doc.rust-lang.org/1.93.1/std/primitive.u8.html">u8</a>]>;
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// Required method
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fn <a href="#tymethod.from_seed" class="fn">from_seed</a>(seed: Self::<a class="associatedtype" href="trait.SeedableRng.html#associatedtype.Seed" title="type rand::SeedableRng::Seed">Seed</a>) -> Self;
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// Provided methods
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fn <a href="#method.seed_from_u64" class="fn">seed_from_u64</a>(state: <a class="primitive" href="https://doc.rust-lang.org/1.93.1/std/primitive.u64.html">u64</a>) -> Self { ... }
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<span class="item-spacer"></span> fn <a href="#method.from_rng" class="fn">from_rng</a>(rng: &mut impl <a class="trait" href="trait.RngCore.html" title="trait rand::RngCore">RngCore</a>) -> Self { ... }
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<span class="item-spacer"></span> fn <a href="#method.try_from_rng" class="fn">try_from_rng</a><R>(rng: <a class="primitive" href="https://doc.rust-lang.org/1.93.1/std/primitive.reference.html">&mut R</a>) -> <a class="enum" href="https://doc.rust-lang.org/1.93.1/core/result/enum.Result.html" title="enum core::result::Result">Result</a><Self, <R as <a class="trait" href="trait.TryRngCore.html" title="trait rand::TryRngCore">TryRngCore</a>>::<a class="associatedtype" href="trait.TryRngCore.html#associatedtype.Error" title="type rand::TryRngCore::Error">Error</a>>
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<span class="where">where R: <a class="trait" href="trait.TryRngCore.html" title="trait rand::TryRngCore">TryRngCore</a></span> { ... }
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<span class="item-spacer"></span> fn <a href="#method.from_os_rng" class="fn">from_os_rng</a>() -> Self { ... }
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<span class="item-spacer"></span> fn <a href="#method.try_from_os_rng" class="fn">try_from_os_rng</a>() -> <a class="enum" href="https://doc.rust-lang.org/1.93.1/core/result/enum.Result.html" title="enum core::result::Result">Result</a><Self, Error> { ... }
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}</code></pre><details class="toggle top-doc" open><summary class="hideme"><span>Expand description</span></summary><div class="docblock"><p>A random number generator that can be explicitly seeded.</p>
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<p>This trait encapsulates the low-level functionality common to all
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pseudo-random number generators (PRNGs, or algorithmic generators).</p>
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<p>A generator implementing <code>SeedableRng</code> will usually be deterministic, but
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beware that portability and reproducibility of results <strong>is not implied</strong>.
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Refer to documentation of the generator, noting that generators named after
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a specific algorithm are usually tested for reproducibility against a
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reference vector, while <code>SmallRng</code> and <code>StdRng</code> specifically opt out of
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reproducibility guarantees.</p>
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</div></details><h2 id="required-associated-types" class="section-header">Required Associated Types<a href="#required-associated-types" class="anchor">§</a></h2><div class="methods"><details class="toggle" open><summary><section id="associatedtype.Seed" class="method"><a class="src rightside" href="../src/rand_core/lib.rs.html#423">Source</a><h4 class="code-header">type <a href="#associatedtype.Seed" class="associatedtype">Seed</a>: <a class="trait" href="https://doc.rust-lang.org/1.93.1/core/clone/trait.Clone.html" title="trait core::clone::Clone">Clone</a> + <a class="trait" href="https://doc.rust-lang.org/1.93.1/core/default/trait.Default.html" title="trait core::default::Default">Default</a> + <a class="trait" href="https://doc.rust-lang.org/1.93.1/core/convert/trait.AsRef.html" title="trait core::convert::AsRef">AsRef</a><[<a class="primitive" href="https://doc.rust-lang.org/1.93.1/std/primitive.u8.html">u8</a>]> + <a class="trait" href="https://doc.rust-lang.org/1.93.1/core/convert/trait.AsMut.html" title="trait core::convert::AsMut">AsMut</a><[<a class="primitive" href="https://doc.rust-lang.org/1.93.1/std/primitive.u8.html">u8</a>]></h4></section></summary><div class="docblock"><p>Seed type, which is restricted to types mutably-dereferenceable as <code>u8</code>
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arrays (we recommend <code>[u8; N]</code> for some <code>N</code>).</p>
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<p>It is recommended to seed PRNGs with a seed of at least circa 100 bits,
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which means an array of <code>[u8; 12]</code> or greater to avoid picking RNGs with
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partially overlapping periods.</p>
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<p>For cryptographic RNG’s a seed of 256 bits is recommended, <code>[u8; 32]</code>.</p>
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<h5 id="implementing-seedablerng-for-rngs-with-large-seeds"><a class="doc-anchor" href="#implementing-seedablerng-for-rngs-with-large-seeds">§</a>Implementing <code>SeedableRng</code> for RNGs with large seeds</h5>
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<p>Note that <a href="https://doc.rust-lang.org/1.93.1/core/default/trait.Default.html" title="trait core::default::Default"><code>Default</code></a> is not implemented for large arrays <code>[u8; N]</code> with
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<code>N</code> > 32. To be able to implement the traits required by <code>SeedableRng</code>
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for RNGs with such large seeds, the newtype pattern can be used:</p>
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<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">use </span>rand_core::SeedableRng;
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<span class="kw">const </span>N: usize = <span class="number">64</span>;
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<span class="attr">#[derive(Clone)]
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</span><span class="kw">pub struct </span>MyRngSeed(<span class="kw">pub </span>[u8; N]);
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<span class="kw">pub struct </span>MyRng(MyRngSeed);
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<span class="kw">impl </span>Default <span class="kw">for </span>MyRngSeed {
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<span class="kw">fn </span>default() -> MyRngSeed {
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MyRngSeed([<span class="number">0</span>; N])
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}
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}
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<span class="kw">impl </span>AsRef<[u8]> <span class="kw">for </span>MyRngSeed {
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<span class="kw">fn </span>as_ref(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="kw-2">&</span>[u8] {
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<span class="kw-2">&</span><span class="self">self</span>.<span class="number">0
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</span>}
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}
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<span class="kw">impl </span>AsMut<[u8]> <span class="kw">for </span>MyRngSeed {
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<span class="kw">fn </span>as_mut(<span class="kw-2">&mut </span><span class="self">self</span>) -> <span class="kw-2">&mut </span>[u8] {
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<span class="kw-2">&mut </span><span class="self">self</span>.<span class="number">0
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</span>}
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}
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<span class="kw">impl </span>SeedableRng <span class="kw">for </span>MyRng {
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<span class="kw">type </span>Seed = MyRngSeed;
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<span class="kw">fn </span>from_seed(seed: MyRngSeed) -> MyRng {
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MyRng(seed)
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}
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}</code></pre></div></div></details></div><h2 id="required-methods" class="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.from_seed" class="method"><a class="src rightside" href="../src/rand_core/lib.rs.html#450">Source</a><h4 class="code-header">fn <a href="#tymethod.from_seed" class="fn">from_seed</a>(seed: Self::<a class="associatedtype" href="trait.SeedableRng.html#associatedtype.Seed" title="type rand::SeedableRng::Seed">Seed</a>) -> Self</h4></section></summary><div class="docblock"><p>Create a new PRNG using the given seed.</p>
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<p>PRNG implementations are allowed to assume that bits in the seed are
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well distributed. That means usually that the number of one and zero
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bits are roughly equal, and values like 0, 1 and (size - 1) are unlikely.
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Note that many non-cryptographic PRNGs will show poor quality output
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if this is not adhered to. If you wish to seed from simple numbers, use
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<code>seed_from_u64</code> instead.</p>
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<p>All PRNG implementations should be reproducible unless otherwise noted:
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given a fixed <code>seed</code>, the same sequence of output should be produced
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on all runs, library versions and architectures (e.g. check endianness).
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Any “value-breaking” changes to the generator should require bumping at
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least the minor version and documentation of the change.</p>
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<p>It is not required that this function yield the same state as a
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reference implementation of the PRNG given equivalent seed; if necessary
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another constructor replicating behaviour from a reference
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implementation can be added.</p>
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<p>PRNG implementations should make sure <code>from_seed</code> never panics. In the
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case that some special values (like an all zero seed) are not viable
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seeds it is preferable to map these to alternative constant value(s),
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for example <code>0xBAD5EEDu32</code> or <code>0x0DDB1A5E5BAD5EEDu64</code> (“odd biases? bad
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seed”). This is assuming only a small number of values must be rejected.</p>
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</div></details></div><h2 id="provided-methods" class="section-header">Provided Methods<a href="#provided-methods" class="anchor">§</a></h2><div class="methods"><details class="toggle method-toggle" open><summary><section id="method.seed_from_u64" class="method"><a class="src rightside" href="../src/rand_core/lib.rs.html#466">Source</a><h4 class="code-header">fn <a href="#method.seed_from_u64" class="fn">seed_from_u64</a>(state: <a class="primitive" href="https://doc.rust-lang.org/1.93.1/std/primitive.u64.html">u64</a>) -> Self</h4></section></summary><div class="docblock"><p>Create a new PRNG using a <code>u64</code> seed.</p>
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<p>This is a convenience-wrapper around <code>from_seed</code> to allow construction
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of any <code>SeedableRng</code> from a simple <code>u64</code> value. It is designed such that
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low Hamming Weight numbers like 0 and 1 can be used and should still
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result in good, independent seeds to the PRNG which is returned.</p>
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<p>This <strong>is not suitable for cryptography</strong>, as should be clear given that
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the input size is only 64 bits.</p>
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<p>Implementations for PRNGs <em>may</em> provide their own implementations of
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this function, but the default implementation should be good enough for
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all purposes. <em>Changing</em> the implementation of this function should be
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considered a value-breaking change.</p>
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</div></details><details class="toggle method-toggle" open><summary><section id="method.from_rng" class="method"><a class="src rightside" href="../src/rand_core/lib.rs.html#521">Source</a><h4 class="code-header">fn <a href="#method.from_rng" class="fn">from_rng</a>(rng: &mut impl <a class="trait" href="trait.RngCore.html" title="trait rand::RngCore">RngCore</a>) -> Self</h4></section></summary><div class="docblock"><p>Create a new PRNG seeded from an infallible <code>Rng</code>.</p>
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<p>This may be useful when needing to rapidly seed many PRNGs from a master
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PRNG, and to allow forking of PRNGs. It may be considered deterministic.</p>
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<p>The master PRNG should be at least as high quality as the child PRNGs.
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When seeding non-cryptographic child PRNGs, we recommend using a
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different algorithm for the master PRNG (ideally a CSPRNG) to avoid
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correlations between the child PRNGs. If this is not possible (e.g.
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forking using small non-crypto PRNGs) ensure that your PRNG has a good
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mixing function on the output or consider use of a hash function with
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<code>from_seed</code>.</p>
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<p>Note that seeding <code>XorShiftRng</code> from another <code>XorShiftRng</code> provides an
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extreme example of what can go wrong: the new PRNG will be a clone
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of the parent.</p>
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<p>PRNG implementations are allowed to assume that a good RNG is provided
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for seeding, and that it is cryptographically secure when appropriate.
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As of <code>rand</code> 0.7 / <code>rand_core</code> 0.5, implementations overriding this
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method should ensure the implementation satisfies reproducibility
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(in prior versions this was not required).</p>
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</div></details><details class="toggle method-toggle" open><summary><section id="method.try_from_rng" class="method"><a class="src rightside" href="../src/rand_core/lib.rs.html#530">Source</a><h4 class="code-header">fn <a href="#method.try_from_rng" class="fn">try_from_rng</a><R>(rng: <a class="primitive" href="https://doc.rust-lang.org/1.93.1/std/primitive.reference.html">&mut R</a>) -> <a class="enum" href="https://doc.rust-lang.org/1.93.1/core/result/enum.Result.html" title="enum core::result::Result">Result</a><Self, <R as <a class="trait" href="trait.TryRngCore.html" title="trait rand::TryRngCore">TryRngCore</a>>::<a class="associatedtype" href="trait.TryRngCore.html#associatedtype.Error" title="type rand::TryRngCore::Error">Error</a>><div class="where">where
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R: <a class="trait" href="trait.TryRngCore.html" title="trait rand::TryRngCore">TryRngCore</a>,</div></h4></section></summary><div class="docblock"><p>Create a new PRNG seeded from a potentially fallible <code>Rng</code>.</p>
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<p>See <a href="trait.SeedableRng.html#method.from_rng" title="associated function rand::SeedableRng::from_rng"><code>from_rng</code></a> docs for more information.</p>
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</div></details><details class="toggle method-toggle" open><summary><section id="method.from_os_rng" class="method"><a class="src rightside" href="../src/rand_core/lib.rs.html#555">Source</a><h4 class="code-header">fn <a href="#method.from_os_rng" class="fn">from_os_rng</a>() -> Self</h4></section></summary><div class="docblock"><p>Creates a new instance of the RNG seeded via <a href="https://docs.rs/getrandom"><code>getrandom</code></a>.</p>
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<p>This method is the recommended way to construct non-deterministic PRNGs
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since it is convenient and secure.</p>
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<p>Note that this method may panic on (extremely unlikely) <a href="https://docs.rs/getrandom"><code>getrandom</code></a> errors.
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If it’s not desirable, use the <a href="trait.SeedableRng.html#method.try_from_os_rng" title="associated function rand::SeedableRng::try_from_os_rng"><code>try_from_os_rng</code></a> method instead.</p>
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<p>In case the overhead of using <a href="https://docs.rs/getrandom"><code>getrandom</code></a> to seed <em>many</em> PRNGs is an
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issue, one may prefer to seed from a local PRNG, e.g.
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<code>from_rng(rand::rng()).unwrap()</code>.</p>
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<h5 id="panics"><a class="doc-anchor" href="#panics">§</a>Panics</h5>
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<p>If <a href="https://docs.rs/getrandom"><code>getrandom</code></a> is unable to provide secure entropy this method will panic.</p>
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</div></details><details class="toggle method-toggle" open><summary><section id="method.try_from_os_rng" class="method"><a class="src rightside" href="../src/rand_core/lib.rs.html#571">Source</a><h4 class="code-header">fn <a href="#method.try_from_os_rng" class="fn">try_from_os_rng</a>() -> <a class="enum" href="https://doc.rust-lang.org/1.93.1/core/result/enum.Result.html" title="enum core::result::Result">Result</a><Self, Error></h4></section></summary><div class="docblock"><p>Creates a new instance of the RNG seeded via <a href="https://docs.rs/getrandom"><code>getrandom</code></a> without unwrapping
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potential <a href="https://docs.rs/getrandom"><code>getrandom</code></a> errors.</p>
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<p>In case the overhead of using <a href="https://docs.rs/getrandom"><code>getrandom</code></a> to seed <em>many</em> PRNGs is an
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issue, one may prefer to seed from a local PRNG, e.g.
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<code>from_rng(&mut rand::rng()).unwrap()</code>.</p>
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</div></details></div><h2 id="dyn-compatibility" class="section-header">Dyn Compatibility<a href="#dyn-compatibility" class="anchor">§</a></h2><div class="dyn-compatibility-info"><p>This trait is <b>not</b> <a href="https://doc.rust-lang.org/1.93.1/reference/items/traits.html#dyn-compatibility">dyn compatible</a>.</p><p><i>In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.</i></p></div><h2 id="foreign-impls" class="section-header">Implementations on Foreign Types<a href="#foreign-impls" class="anchor">§</a></h2><details class="toggle implementors-toggle"><summary><section id="impl-SeedableRng-for-ChaCha8Core" class="impl"><a class="src rightside" href="../src/rand_chacha/chacha.rs.html#346-352">Source</a><a href="#impl-SeedableRng-for-ChaCha8Core" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="trait.SeedableRng.html" title="trait rand::SeedableRng">SeedableRng</a> for <a class="struct" href="../rand_chacha/chacha/struct.ChaCha8Core.html" title="struct rand_chacha::chacha::ChaCha8Core">ChaCha8Core</a></h3></section></summary><div class="impl-items"><section id="associatedtype.Seed-1" class="associatedtype trait-impl"><a class="src rightside" href="../src/rand_chacha/chacha.rs.html#346-352">Source</a><a href="#associatedtype.Seed-1" class="anchor">§</a><h4 class="code-header">type <a href="#associatedtype.Seed" class="associatedtype">Seed</a> = [<a class="primitive" href="https://doc.rust-lang.org/1.93.1/std/primitive.u8.html">u8</a>; <a class="primitive" href="https://doc.rust-lang.org/1.93.1/std/primitive.array.html">32</a>]</h4></section><section id="method.from_seed" class="method trait-impl"><a class="src rightside" href="../src/rand_chacha/chacha.rs.html#346-352">Source</a><a href="#method.from_seed" class="anchor">§</a><h4 class="code-header">fn <a href="#tymethod.from_seed" class="fn">from_seed</a>(seed: <<a class="struct" href="../rand_chacha/chacha/struct.ChaCha8Core.html" title="struct rand_chacha::chacha::ChaCha8Core">ChaCha8Core</a> as <a class="trait" href="trait.SeedableRng.html" title="trait rand::SeedableRng">SeedableRng</a>>::<a class="associatedtype" href="trait.SeedableRng.html#associatedtype.Seed" title="type rand::SeedableRng::Seed">Seed</a>) -> <a class="struct" href="../rand_chacha/chacha/struct.ChaCha8Core.html" title="struct rand_chacha::chacha::ChaCha8Core">ChaCha8Core</a></h4></section></div></details><details class="toggle implementors-toggle"><summary><section id="impl-SeedableRng-for-ChaCha8Rng" class="impl"><a class="src rightside" href="../src/rand_chacha/chacha.rs.html#346-352">Source</a><a href="#impl-SeedableRng-for-ChaCha8Rng" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="trait.SeedableRng.html" title="trait rand::SeedableRng">SeedableRng</a> for <a class="struct" href="../rand_chacha/chacha/struct.ChaCha8Rng.html" title="struct rand_chacha::chacha::ChaCha8Rng">ChaCha8Rng</a></h3></section></summary><div class="impl-items"><section id="associatedtype.Seed-2" class="associatedtype trait-impl"><a class="src rightside" href="../src/rand_chacha/chacha.rs.html#346-352">Source</a><a href="#associatedtype.Seed-2" class="anchor">§</a><h4 class="code-header">type <a href="#associatedtype.Seed" class="associatedtype">Seed</a> = [<a class="primitive" href="https://doc.rust-lang.org/1.93.1/std/primitive.u8.html">u8</a>; <a class="primitive" href="https://doc.rust-lang.org/1.93.1/std/primitive.array.html">32</a>]</h4></section><section id="method.from_seed-1" class="method trait-impl"><a class="src rightside" href="../src/rand_chacha/chacha.rs.html#346-352">Source</a><a href="#method.from_seed-1" class="anchor">§</a><h4 class="code-header">fn <a href="#tymethod.from_seed" class="fn">from_seed</a>(seed: <<a class="struct" href="../rand_chacha/chacha/struct.ChaCha8Rng.html" title="struct rand_chacha::chacha::ChaCha8Rng">ChaCha8Rng</a> as <a class="trait" href="trait.SeedableRng.html" title="trait rand::SeedableRng">SeedableRng</a>>::<a class="associatedtype" href="trait.SeedableRng.html#associatedtype.Seed" title="type rand::SeedableRng::Seed">Seed</a>) -> <a class="struct" href="../rand_chacha/chacha/struct.ChaCha8Rng.html" title="struct rand_chacha::chacha::ChaCha8Rng">ChaCha8Rng</a></h4></section></div></details><details class="toggle implementors-toggle"><summary><section id="impl-SeedableRng-for-ChaCha12Core" class="impl"><a class="src rightside" href="../src/rand_chacha/chacha.rs.html#339-345">Source</a><a href="#impl-SeedableRng-for-ChaCha12Core" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="trait.SeedableRng.html" title="trait rand::SeedableRng">SeedableRng</a> for <a class="struct" href="../rand_chacha/chacha/struct.ChaCha12Core.html" title="struct rand_chacha::chacha::ChaCha12Core">ChaCha12Core</a></h3></section></summary><div class="impl-items"><section id="associatedtype.Seed-3" class="associatedtype trait-impl"><a class="src rightside" href="../src/rand_chacha/chacha.rs.html#339-345">Source</a><a href="#associatedtype.Seed-3" class="anchor">§</a><h4 class="code-header">type <a href="#associatedtype.Seed" class="associatedtype">Seed</a> = [<a class="primitive" href="https://doc.rust-lang.org/1.93.1/std/primitive.u8.html">u8</a>; <a class="primitive" href="https://doc.rust-lang.org/1.93.1/std/primitive.array.html">32</a>]</h4></section><section id="method.from_seed-2" class="method trait-impl"><a class="src rightside" href="../src/rand_chacha/chacha.rs.html#339-345">Source</a><a href="#method.from_seed-2" class="anchor">§</a><h4 class="code-header">fn <a href="#tymethod.from_seed" class="fn">from_seed</a>(seed: <<a class="struct" href="../rand_chacha/chacha/struct.ChaCha12Core.html" title="struct rand_chacha::chacha::ChaCha12Core">ChaCha12Core</a> as <a class="trait" href="trait.SeedableRng.html" title="trait rand::SeedableRng">SeedableRng</a>>::<a class="associatedtype" href="trait.SeedableRng.html#associatedtype.Seed" title="type rand::SeedableRng::Seed">Seed</a>) -> <a class="struct" href="../rand_chacha/chacha/struct.ChaCha12Core.html" title="struct rand_chacha::chacha::ChaCha12Core">ChaCha12Core</a></h4></section></div></details><details class="toggle implementors-toggle"><summary><section id="impl-SeedableRng-for-ChaCha12Rng" class="impl"><a class="src rightside" href="../src/rand_chacha/chacha.rs.html#339-345">Source</a><a href="#impl-SeedableRng-for-ChaCha12Rng" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="trait.SeedableRng.html" title="trait rand::SeedableRng">SeedableRng</a> for <a class="struct" href="../rand_chacha/chacha/struct.ChaCha12Rng.html" title="struct rand_chacha::chacha::ChaCha12Rng">ChaCha12Rng</a></h3></section></summary><div class="impl-items"><section id="associatedtype.Seed-4" class="associatedtype trait-impl"><a class="src rightside" href="../src/rand_chacha/chacha.rs.html#339-345">Source</a><a href="#associatedtype.Seed-4" class="anchor">§</a><h4 class="code-header">type <a href="#associatedtype.Seed" class="associatedtype">Seed</a> = [<a class="primitive" href="https://doc.rust-lang.org/1.93.1/std/primitive.u8.html">u8</a>; <a class="primitive" href="https://doc.rust-lang.org/1.93.1/std/primitive.array.html">32</a>]</h4></section><section id="method.from_seed-3" class="method trait-impl"><a class="src rightside" href="../src/rand_chacha/chacha.rs.html#339-345">Source</a><a href="#method.from_seed-3" class="anchor">§</a><h4 class="code-header">fn <a href="#tymethod.from_seed" class="fn">from_seed</a>(seed: <<a class="struct" href="../rand_chacha/chacha/struct.ChaCha12Rng.html" title="struct rand_chacha::chacha::ChaCha12Rng">ChaCha12Rng</a> as <a class="trait" href="trait.SeedableRng.html" title="trait rand::SeedableRng">SeedableRng</a>>::<a class="associatedtype" href="trait.SeedableRng.html#associatedtype.Seed" title="type rand::SeedableRng::Seed">Seed</a>) -> <a class="struct" href="../rand_chacha/chacha/struct.ChaCha12Rng.html" title="struct rand_chacha::chacha::ChaCha12Rng">ChaCha12Rng</a></h4></section></div></details><details class="toggle implementors-toggle"><summary><section id="impl-SeedableRng-for-ChaCha20Core" class="impl"><a class="src rightside" href="../src/rand_chacha/chacha.rs.html#332-338">Source</a><a href="#impl-SeedableRng-for-ChaCha20Core" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="trait.SeedableRng.html" title="trait rand::SeedableRng">SeedableRng</a> for <a class="struct" href="../rand_chacha/chacha/struct.ChaCha20Core.html" title="struct rand_chacha::chacha::ChaCha20Core">ChaCha20Core</a></h3></section></summary><div class="impl-items"><section id="associatedtype.Seed-5" class="associatedtype trait-impl"><a class="src rightside" href="../src/rand_chacha/chacha.rs.html#332-338">Source</a><a href="#associatedtype.Seed-5" class="anchor">§</a><h4 class="code-header">type <a href="#associatedtype.Seed" class="associatedtype">Seed</a> = [<a class="primitive" href="https://doc.rust-lang.org/1.93.1/std/primitive.u8.html">u8</a>; <a class="primitive" href="https://doc.rust-lang.org/1.93.1/std/primitive.array.html">32</a>]</h4></section><section id="method.from_seed-4" class="method trait-impl"><a class="src rightside" href="../src/rand_chacha/chacha.rs.html#332-338">Source</a><a href="#method.from_seed-4" class="anchor">§</a><h4 class="code-header">fn <a href="#tymethod.from_seed" class="fn">from_seed</a>(seed: <<a class="struct" href="../rand_chacha/chacha/struct.ChaCha20Core.html" title="struct rand_chacha::chacha::ChaCha20Core">ChaCha20Core</a> as <a class="trait" href="trait.SeedableRng.html" title="trait rand::SeedableRng">SeedableRng</a>>::<a class="associatedtype" href="trait.SeedableRng.html#associatedtype.Seed" title="type rand::SeedableRng::Seed">Seed</a>) -> <a class="struct" href="../rand_chacha/chacha/struct.ChaCha20Core.html" title="struct rand_chacha::chacha::ChaCha20Core">ChaCha20Core</a></h4></section></div></details><details class="toggle implementors-toggle"><summary><section id="impl-SeedableRng-for-ChaCha20Rng" class="impl"><a class="src rightside" href="../src/rand_chacha/chacha.rs.html#332-338">Source</a><a href="#impl-SeedableRng-for-ChaCha20Rng" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="trait.SeedableRng.html" title="trait rand::SeedableRng">SeedableRng</a> for <a class="struct" href="../rand_chacha/chacha/struct.ChaCha20Rng.html" title="struct rand_chacha::chacha::ChaCha20Rng">ChaCha20Rng</a></h3></section></summary><div class="impl-items"><section id="associatedtype.Seed-6" class="associatedtype trait-impl"><a class="src rightside" href="../src/rand_chacha/chacha.rs.html#332-338">Source</a><a href="#associatedtype.Seed-6" class="anchor">§</a><h4 class="code-header">type <a href="#associatedtype.Seed" class="associatedtype">Seed</a> = [<a class="primitive" href="https://doc.rust-lang.org/1.93.1/std/primitive.u8.html">u8</a>; <a class="primitive" href="https://doc.rust-lang.org/1.93.1/std/primitive.array.html">32</a>]</h4></section><section id="method.from_seed-5" class="method trait-impl"><a class="src rightside" href="../src/rand_chacha/chacha.rs.html#332-338">Source</a><a href="#method.from_seed-5" class="anchor">§</a><h4 class="code-header">fn <a href="#tymethod.from_seed" class="fn">from_seed</a>(seed: <<a class="struct" href="../rand_chacha/chacha/struct.ChaCha20Rng.html" title="struct rand_chacha::chacha::ChaCha20Rng">ChaCha20Rng</a> as <a class="trait" href="trait.SeedableRng.html" title="trait rand::SeedableRng">SeedableRng</a>>::<a class="associatedtype" href="trait.SeedableRng.html#associatedtype.Seed" title="type rand::SeedableRng::Seed">Seed</a>) -> <a class="struct" href="../rand_chacha/chacha/struct.ChaCha20Rng.html" title="struct rand_chacha::chacha::ChaCha20Rng">ChaCha20Rng</a></h4></section></div></details><h2 id="implementors" class="section-header">Implementors<a href="#implementors" class="anchor">§</a></h2><div id="implementors-list"><details class="toggle implementors-toggle"><summary><section id="impl-SeedableRng-for-SmallRng" class="impl"><a class="src rightside" href="../src/rand/rngs/small.rs.html#86-103">Source</a><a href="#impl-SeedableRng-for-SmallRng" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="trait.SeedableRng.html" title="trait rand::SeedableRng">SeedableRng</a> for <a class="struct" href="rngs/struct.SmallRng.html" title="struct rand::rngs::SmallRng">SmallRng</a></h3></section></summary><div class="impl-items"><section id="associatedtype.Seed-7" class="associatedtype trait-impl"><a class="src rightside" href="../src/rand/rngs/small.rs.html#88">Source</a><a href="#associatedtype.Seed-7" class="anchor">§</a><h4 class="code-header">type <a href="#associatedtype.Seed" class="associatedtype">Seed</a> = [<a class="primitive" href="https://doc.rust-lang.org/1.93.1/std/primitive.u8.html">u8</a>; <a class="primitive" href="https://doc.rust-lang.org/1.93.1/std/primitive.array.html">32</a>]</h4></section></div></details><details class="toggle implementors-toggle"><summary><section id="impl-SeedableRng-for-StdRng" class="impl"><a class="src rightside" href="../src/rand/rngs/std.rs.html#89-97">Source</a><a href="#impl-SeedableRng-for-StdRng" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="trait.SeedableRng.html" title="trait rand::SeedableRng">SeedableRng</a> for <a class="struct" href="rngs/struct.StdRng.html" title="struct rand::rngs::StdRng">StdRng</a></h3></section></summary><div class="impl-items"><section id="associatedtype.Seed-8" class="associatedtype trait-impl"><a class="src rightside" href="../src/rand/rngs/std.rs.html#91">Source</a><a href="#associatedtype.Seed-8" class="anchor">§</a><h4 class="code-header">type <a href="#associatedtype.Seed" class="associatedtype">Seed</a> = [<a class="primitive" href="https://doc.rust-lang.org/1.93.1/std/primitive.u8.html">u8</a>; <a class="primitive" href="https://doc.rust-lang.org/1.93.1/std/primitive.array.html">32</a>]</h4></section></div></details><details class="toggle implementors-toggle"><summary><section id="impl-SeedableRng-for-BlockRng64%3CR%3E" class="impl"><a class="src rightside" href="../src/rand_core/block.rs.html#400">Source</a><a href="#impl-SeedableRng-for-BlockRng64%3CR%3E" class="anchor">§</a><h3 class="code-header">impl<R> <a class="trait" href="trait.SeedableRng.html" title="trait rand::SeedableRng">SeedableRng</a> for <a class="struct" href="../rand_core/block/struct.BlockRng64.html" title="struct rand_core::block::BlockRng64">BlockRng64</a><R><div class="where">where
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||
R: <a class="trait" href="../rand_core/block/trait.BlockRngCore.html" title="trait rand_core::block::BlockRngCore">BlockRngCore</a> + <a class="trait" href="trait.SeedableRng.html" title="trait rand::SeedableRng">SeedableRng</a>,</div></h3></section></summary><div class="impl-items"><section id="associatedtype.Seed-9" class="associatedtype trait-impl"><a class="src rightside" href="../src/rand_core/block.rs.html#401">Source</a><a href="#associatedtype.Seed-9" class="anchor">§</a><h4 class="code-header">type <a href="#associatedtype.Seed" class="associatedtype">Seed</a> = <R as <a class="trait" href="trait.SeedableRng.html" title="trait rand::SeedableRng">SeedableRng</a>>::<a class="associatedtype" href="trait.SeedableRng.html#associatedtype.Seed" title="type rand::SeedableRng::Seed">Seed</a></h4></section></div></details><details class="toggle implementors-toggle"><summary><section id="impl-SeedableRng-for-BlockRng%3CR%3E" class="impl"><a class="src rightside" href="../src/rand_core/block.rs.html#237">Source</a><a href="#impl-SeedableRng-for-BlockRng%3CR%3E" class="anchor">§</a><h3 class="code-header">impl<R> <a class="trait" href="trait.SeedableRng.html" title="trait rand::SeedableRng">SeedableRng</a> for <a class="struct" href="../rand_core/block/struct.BlockRng.html" title="struct rand_core::block::BlockRng">BlockRng</a><R><div class="where">where
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||
R: <a class="trait" href="../rand_core/block/trait.BlockRngCore.html" title="trait rand_core::block::BlockRngCore">BlockRngCore</a> + <a class="trait" href="trait.SeedableRng.html" title="trait rand::SeedableRng">SeedableRng</a>,</div></h3></section></summary><div class="impl-items"><section id="associatedtype.Seed-10" class="associatedtype trait-impl"><a class="src rightside" href="../src/rand_core/block.rs.html#238">Source</a><a href="#associatedtype.Seed-10" class="anchor">§</a><h4 class="code-header">type <a href="#associatedtype.Seed" class="associatedtype">Seed</a> = <R as <a class="trait" href="trait.SeedableRng.html" title="trait rand::SeedableRng">SeedableRng</a>>::<a class="associatedtype" href="trait.SeedableRng.html#associatedtype.Seed" title="type rand::SeedableRng::Seed">Seed</a></h4></section></div></details></div><script src="../trait.impl/rand_core/trait.SeedableRng.js" data-ignore-extern-crates="rand_core,rand_chacha" async></script></section></div></main></body></html> |