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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="Derives a key and an IV from various parameters."><title>bytes_to_key in openssl::pkcs5 - 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="openssl" 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="alternate icon" type="image/png" href="../../static.files/favicon-32x32-eab170b8.png"><link rel="icon" type="image/svg+xml" href="../../static.files/favicon-044be391.svg"></head><body class="rustdoc fn"><!--[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="#">bytes_to_key</a></h2></rustdoc-topbar><nav class="sidebar"><div class="sidebar-crate"><h2><a href="../../openssl/index.html">openssl</a><span class="version">0.10.75</span></h2></div><div class="sidebar-elems"><div id="rustdoc-modnav"><h2><a href="index.html">In openssl::<wbr>pkcs5</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">openssl</a>::<wbr><a href="index.html">pkcs5</a></div><h1>Function <span class="fn">bytes_<wbr>to_<wbr>key</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/openssl/pkcs5.rs.html#33-87">Source</a> </span></div><pre class="rust item-decl"><code>pub fn bytes_to_key(
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cipher: <a class="struct" href="../symm/struct.Cipher.html" title="struct openssl::symm::Cipher">Cipher</a>,
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digest: <a class="struct" href="../hash/struct.MessageDigest.html" title="struct openssl::hash::MessageDigest">MessageDigest</a>,
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data: &[<a class="primitive" href="https://doc.rust-lang.org/1.93.1/std/primitive.u8.html">u8</a>],
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salt: <a class="enum" href="https://doc.rust-lang.org/1.93.1/core/option/enum.Option.html" title="enum core::option::Option">Option</a><&[<a class="primitive" href="https://doc.rust-lang.org/1.93.1/std/primitive.u8.html">u8</a>]>,
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count: <a class="primitive" href="https://doc.rust-lang.org/1.93.1/std/primitive.i32.html">i32</a>,
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) -> <a class="enum" href="https://doc.rust-lang.org/1.93.1/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="struct" href="struct.KeyIvPair.html" title="struct openssl::pkcs5::KeyIvPair">KeyIvPair</a>, <a class="struct" href="../error/struct.ErrorStack.html" title="struct openssl::error::ErrorStack">ErrorStack</a>></code></pre><details class="toggle top-doc" open><summary class="hideme"><span>Expand description</span></summary><div class="docblock"><p>Derives a key and an IV from various parameters.</p>
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<p>If specified, <code>salt</code> must be 8 bytes in length.</p>
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<p>If the total key and IV length is less than 16 bytes and MD5 is used then
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the algorithm is compatible with the key derivation algorithm from PKCS#5
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v1.5 or PBKDF1 from PKCS#5 v2.0.</p>
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<p>New applications should not use this and instead use
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<code>pbkdf2_hmac</code> or another more modern key derivation algorithm.</p>
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<p>This corresponds to <a href="https://www.openssl.org/docs/manmaster/man3/EVP_BytesToKey.html"><code>EVP_BytesToKey</code></a>.</p>
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</div></details></section></div></main></body></html> |