| <!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="Source of the Rust file `/root/.cargo/git/checkouts/incubator-teaclave-crates-c8106113f74feefc/ede1f68/ring/src/ec/keys.rs`."><meta name="keywords" content="rust, rustlang, rust-lang"><title>keys.rs - source</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" href="../../../normalize.css"><link rel="stylesheet" href="../../../rustdoc.css" id="mainThemeStyle"><link rel="stylesheet" href="../../../ayu.css" disabled><link rel="stylesheet" href="../../../dark.css" disabled><link rel="stylesheet" href="../../../light.css" id="themeStyle"><script id="default-settings" ></script><script src="../../../storage.js"></script><script defer src="../../../source-script.js"></script><script defer src="../../../source-files.js"></script><script defer src="../../../main.js"></script><noscript><link rel="stylesheet" href="../../../noscript.css"></noscript><link rel="alternate icon" type="image/png" href="../../../favicon-16x16.png"><link rel="alternate icon" type="image/png" href="../../../favicon-32x32.png"><link rel="icon" type="image/svg+xml" href="../../../favicon.svg"></head><body class="rustdoc source"><!--[if lte IE 11]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="sidebar"><a class="sidebar-logo" href="../../../ring/index.html"><div class="logo-container"><img class="rust-logo" src="../../../rust-logo.svg" alt="logo"></div></a></nav><main><div class="width-limiter"><nav class="sub"><a class="sub-logo-container" href="../../../ring/index.html"><img class="rust-logo" src="../../../rust-logo.svg" alt="logo"></a><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"><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="../../../wheel.svg"></a></div></div></form></nav><section id="main-content" class="content"><div class="example-wrap"><pre class="src-line-numbers"><span id="1">1</span> |
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| </pre><pre class="rust"><code><span class="kw">use super</span>::{Curve, ELEM_MAX_BYTES, SEED_MAX_BYTES}; |
| <span class="kw">use crate</span>::{cpu, error, rand}; |
| |
| <span class="kw">pub struct </span>KeyPair { |
| seed: Seed, |
| public_key: PublicKey, |
| } |
| |
| <span class="kw">impl </span>KeyPair { |
| <span class="kw">pub fn </span>derive(seed: Seed) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>, error::Unspecified> { |
| <span class="kw">let </span>public_key = seed.compute_public_key()<span class="question-mark">?</span>; |
| <span class="prelude-val">Ok</span>(<span class="self">Self </span>{ seed, public_key }) |
| } |
| |
| <span class="kw">pub fn </span>public_key(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="kw-2">&</span>PublicKey { |
| <span class="kw-2">&</span><span class="self">self</span>.public_key |
| } |
| <span class="kw">pub fn </span>split(<span class="self">self</span>) -> (Seed, PublicKey) { |
| (<span class="self">self</span>.seed, <span class="self">self</span>.public_key) |
| } |
| } |
| |
| <span class="kw">pub struct </span>Seed { |
| bytes: [u8; SEED_MAX_BYTES], |
| curve: <span class="kw-2">&</span><span class="lifetime">'static </span>Curve, |
| <span class="kw">pub</span>(<span class="kw">crate</span>) cpu_features: cpu::Features, |
| } |
| |
| <span class="kw">impl </span>Seed { |
| <span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn </span>generate( |
| curve: <span class="kw-2">&</span><span class="lifetime">'static </span>Curve, |
| rng: <span class="kw-2">&</span><span class="kw">dyn </span>rand::SecureRandom, |
| cpu_features: cpu::Features, |
| ) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>, error::Unspecified> { |
| <span class="kw">let </span><span class="kw-2">mut </span>r = <span class="self">Self </span>{ |
| bytes: [<span class="number">0u8</span>; SEED_MAX_BYTES], |
| curve, |
| cpu_features, |
| }; |
| (curve.generate_private_key)(rng, <span class="kw-2">&mut </span>r.bytes[..curve.elem_scalar_seed_len])<span class="question-mark">?</span>; |
| <span class="prelude-val">Ok</span>(r) |
| } |
| |
| <span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn </span>from_bytes( |
| curve: <span class="kw-2">&</span><span class="lifetime">'static </span>Curve, |
| bytes: untrusted::Input, |
| cpu_features: cpu::Features, |
| ) -> <span class="prelude-ty">Result</span><Seed, error::Unspecified> { |
| <span class="kw">let </span>bytes = bytes.as_slice_less_safe(); |
| <span class="kw">if </span>curve.elem_scalar_seed_len != bytes.len() { |
| <span class="kw">return </span><span class="prelude-val">Err</span>(error::Unspecified); |
| } |
| (curve.check_private_key_bytes)(bytes)<span class="question-mark">?</span>; |
| <span class="kw">let </span><span class="kw-2">mut </span>r = <span class="self">Self </span>{ |
| bytes: [<span class="number">0</span>; SEED_MAX_BYTES], |
| curve, |
| cpu_features, |
| }; |
| r.bytes[..curve.elem_scalar_seed_len].copy_from_slice(bytes); |
| <span class="prelude-val">Ok</span>(r) |
| } |
| |
| <span class="kw">pub fn </span>bytes_less_safe(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="kw-2">&</span>[u8] { |
| <span class="kw-2">&</span><span class="self">self</span>.bytes[..<span class="self">self</span>.curve.elem_scalar_seed_len] |
| } |
| |
| <span class="kw">pub fn </span>compute_public_key(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="prelude-ty">Result</span><PublicKey, error::Unspecified> { |
| <span class="kw">let </span><span class="kw-2">mut </span>public_key = PublicKey { |
| bytes: [<span class="number">0u8</span>; PUBLIC_KEY_MAX_LEN], |
| len: <span class="self">self</span>.curve.public_key_len, |
| }; |
| (<span class="self">self</span>.curve.public_from_private)(<span class="kw-2">&mut </span>public_key.bytes[..public_key.len], <span class="self">self</span>)<span class="question-mark">?</span>; |
| <span class="prelude-val">Ok</span>(public_key) |
| } |
| } |
| |
| <span class="attribute">#[derive(Copy, Clone)] |
| </span><span class="kw">pub struct </span>PublicKey { |
| bytes: [u8; PUBLIC_KEY_MAX_LEN], |
| len: usize, |
| } |
| |
| <span class="kw">impl </span>AsRef<[u8]> <span class="kw">for </span>PublicKey { |
| <span class="kw">fn </span>as_ref(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="kw-2">&</span>[u8] { |
| <span class="kw-2">&</span><span class="self">self</span>.bytes[..<span class="self">self</span>.len] |
| } |
| } |
| |
| <span class="doccomment">/// The maximum length, in bytes, of an encoded public key. |
| </span><span class="kw">pub const </span>PUBLIC_KEY_MAX_LEN: usize = <span class="number">1 </span>+ (<span class="number">2 </span>* ELEM_MAX_BYTES); |
| </code></pre></div> |
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