| <!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/yasna.rs-156132176fc4750e/5680982/src/models/der.rs`."><meta name="keywords" content="rust, rustlang, rust-lang"><title>der.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="../../../yasna/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="../../../yasna/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 2017 Fortanix, Inc. |
| // |
| // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or |
| // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license |
| // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your |
| // option. This file may not be copied, modified, or distributed |
| // except according to those terms. |
| |
| </span><span class="kw">use </span><span class="kw">super</span>::<span class="kw">super</span>::{PCBit, Tag}; |
| <span class="kw">use </span><span class="kw">super</span>::<span class="kw">super</span>::tags::<span class="kw-2">*</span>; |
| |
| <span class="doccomment">/// Container for a tag and arbitrary DER value. |
| /// |
| /// When obtained by `BERReader::read_tagged_der` in DER mode, |
| /// the reader verifies that the payload is actually valid DER. |
| /// When constructed from bytes, the caller is responsible for |
| /// providing valid DER. |
| </span><span class="attribute">#[derive(Debug, Clone, Eq, PartialEq, Ord, PartialOrd, Hash)] |
| </span><span class="kw">pub struct </span>TaggedDerValue { |
| tag: Tag, |
| pcbit: PCBit, |
| value: Vec<u8>, |
| } |
| |
| <span class="kw">impl </span>TaggedDerValue { |
| <span class="doccomment">/// Constructs a new `TaggedDerValue` as an octet string |
| </span><span class="kw">pub fn </span>from_octetstring(bytes: Vec<u8>) -> <span class="self">Self </span>{ |
| TaggedDerValue { |
| tag: TAG_OCTETSTRING, |
| pcbit: PCBit::Primitive, |
| value: bytes, |
| } |
| } |
| |
| <span class="doccomment">/// Constructs a new `TaggedDerValue` from its tag and content |
| </span><span class="kw">pub fn </span>from_tag_and_bytes(tag: Tag, bytes: Vec<u8>) -> <span class="self">Self </span>{ |
| <span class="kw">let </span>pcbit = <span class="kw">match </span>tag { |
| TAG_SEQUENCE | TAG_SET => PCBit::Constructed, |
| <span class="kw">_ </span>=> PCBit::Primitive, |
| }; |
| TaggedDerValue { |
| tag, |
| pcbit, |
| value: bytes, |
| } |
| } |
| |
| <span class="doccomment">/// Constructs a new `TaggedDerValue` from its tag, |
| /// primitive/constructed bit, and content |
| </span><span class="kw">pub fn </span>from_tag_pc_and_bytes(tag: Tag, pcbit: PCBit, bytes: Vec<u8>) -> <span class="self">Self </span>{ |
| TaggedDerValue { |
| tag, |
| pcbit, |
| value: bytes, |
| } |
| } |
| |
| <span class="doccomment">/// Returns the tag |
| </span><span class="kw">pub fn </span>tag(<span class="kw-2">&</span><span class="self">self</span>) -> Tag { |
| <span class="self">self</span>.tag |
| } |
| |
| <span class="doccomment">/// Returns the primitive/constructed bit |
| </span><span class="kw">pub fn </span>pcbit(<span class="kw-2">&</span><span class="self">self</span>) -> PCBit { |
| <span class="self">self</span>.pcbit |
| } |
| |
| <span class="doccomment">/// Returns the value |
| </span><span class="kw">pub fn </span>value(<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>.value |
| } |
| |
| <span class="doccomment">/// If the value is something that contains raw bytes, |
| /// returns its content. |
| /// |
| /// # Examples |
| /// ``` |
| /// use yasna::models::TaggedDerValue; |
| /// let value = TaggedDerValue::from_octetstring(vec![1, 2, 3, 4, 5, 6]); |
| /// assert!(value.as_bytes() == Some(&[1, 2, 3, 4, 5, 6])); |
| /// ``` |
| </span><span class="kw">pub fn </span>as_bytes(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="prelude-ty">Option</span><<span class="kw-2">&</span>[u8]> { |
| <span class="kw">match </span>(<span class="self">self</span>.tag, <span class="self">self</span>.pcbit) { |
| (TAG_BITSTRING, PCBit::Primitive) => { |
| <span class="comment">// First byte of bitstring value is number of unused bits. |
| // We only accept bitstrings that are multiples of bytes. |
| </span><span class="kw">if let </span><span class="prelude-val">Some</span>(<span class="kw-2">&</span><span class="number">0</span>) = <span class="self">self</span>.value.first() { |
| <span class="prelude-val">Some</span>(<span class="kw-2">&</span><span class="self">self</span>.value[<span class="number">1</span>..]) |
| } <span class="kw">else </span>{ |
| <span class="prelude-val">None |
| </span>} |
| }, |
| (TAG_OCTETSTRING, PCBit::Primitive) => <span class="prelude-val">Some</span>(<span class="kw-2">&</span><span class="self">self</span>.value), |
| <span class="kw">_ </span>=> <span class="prelude-val">None |
| </span>} |
| } |
| |
| <span class="doccomment">/// If the value is something string-like, returns it as string. |
| </span><span class="kw">pub fn </span>as_str(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="prelude-ty">Option</span><<span class="kw-2">&</span>str> { |
| <span class="kw">use </span>std::str::from_utf8; |
| |
| <span class="kw">match </span>(<span class="self">self</span>.tag, <span class="self">self</span>.pcbit) { |
| (TAG_IA5STRING, PCBit::Primitive) => from_utf8(<span class="kw-2">&</span><span class="self">self</span>.value).ok(), |
| (TAG_PRINTABLESTRING, PCBit::Primitive) => from_utf8(<span class="kw-2">&</span><span class="self">self</span>.value).ok(), |
| (TAG_UTF8STRING, PCBit::Primitive) => from_utf8(<span class="kw-2">&</span><span class="self">self</span>.value).ok(), |
| <span class="kw">_ </span>=> <span class="prelude-val">None |
| </span>} |
| } |
| } |
| </code></pre></div> |
| </section></div></main><div id="rustdoc-vars" data-root-path="../../../" data-current-crate="yasna" data-themes="ayu,dark,light" data-resource-suffix="" data-rustdoc-version="1.66.0-nightly (5c8bff74b 2022-10-21)" ></div></body></html> |
