| <!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/rsa.rs`."><meta name="keywords" content="rust, rustlang, rust-lang"><title>rsa.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="comment">// Copyright 2015-2016 Brian Smith. |
| // |
| // Permission to use, copy, modify, and/or distribute this software for any |
| // purpose with or without fee is hereby granted, provided that the above |
| // copyright notice and this permission notice appear in all copies. |
| // |
| // THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHORS DISCLAIM ALL WARRANTIES |
| // WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
| // MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY |
| // SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
| // WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION |
| // OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN |
| // CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
| |
| // *R* and *r* in Montgomery math refer to different things, so we always use |
| // `R` to refer to *R* to avoid confusion, even when that's against the normal |
| // naming conventions. Also the standard camelCase names are used for `KeyPair` |
| // components. |
| |
| </span><span class="doccomment">/// RSA signatures. |
| </span><span class="kw">use crate</span>::{ |
| arithmetic::bigint, |
| bits, error, |
| io::{<span class="self">self</span>, der}, |
| limb, |
| }; |
| |
| <span class="kw">mod </span>padding; |
| |
| <span class="comment">// `RSA_PKCS1_SHA1` is intentionally not exposed. |
| </span><span class="kw">pub use </span><span class="self">self</span>::padding::{ |
| RsaEncoding, RSA_PKCS1_SHA256, RSA_PKCS1_SHA384, RSA_PKCS1_SHA512, RSA_PSS_SHA256, |
| RSA_PSS_SHA384, RSA_PSS_SHA512, |
| }; |
| |
| <span class="comment">// Maximum RSA modulus size supported for signature verification (in bytes). |
| </span><span class="kw">const </span>PUBLIC_KEY_PUBLIC_MODULUS_MAX_LEN: usize = bigint::MODULUS_MAX_LIMBS * limb::LIMB_BYTES; |
| |
| <span class="comment">// Keep in sync with the documentation comment for `KeyPair`. |
| </span><span class="kw">const </span>PRIVATE_KEY_PUBLIC_MODULUS_MAX_BITS: bits::BitLength = bits::BitLength::from_usize_bits(<span class="number">4096</span>); |
| |
| <span class="doccomment">/// Parameters for RSA verification. |
| </span><span class="attribute">#[derive(Debug)] |
| </span><span class="kw">pub struct </span>RsaParameters { |
| padding_alg: <span class="kw-2">&</span><span class="lifetime">'static </span><span class="kw">dyn </span>padding::Verification, |
| min_bits: bits::BitLength, |
| } |
| |
| <span class="kw">fn </span>parse_public_key( |
| input: untrusted::Input, |
| ) -> <span class="prelude-ty">Result</span><(io::Positive, io::Positive), error::Unspecified> { |
| input.read_all(error::Unspecified, |input| { |
| der::nested(input, der::Tag::Sequence, error::Unspecified, |input| { |
| <span class="kw">let </span>n = der::positive_integer(input)<span class="question-mark">?</span>; |
| <span class="kw">let </span>e = der::positive_integer(input)<span class="question-mark">?</span>; |
| <span class="prelude-val">Ok</span>((n, e)) |
| }) |
| }) |
| } |
| |
| <span class="comment">// Type-level representation of an RSA public modulus *n*. See |
| // `super::bigint`'s modulue-level documentation. |
| </span><span class="attribute">#[derive(Copy, Clone)] |
| </span><span class="kw">pub enum </span>N {} |
| |
| <span class="kw">unsafe impl </span>bigint::PublicModulus <span class="kw">for </span>N {} |
| |
| <span class="kw">pub mod </span>verification; |
| |
| <span class="kw">pub mod </span>signing; |
| </code></pre></div> |
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