| <!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/rustls-0.19.1/rustls/src/manual/features.rs`."><meta name="keywords" content="rust, rustlang, rust-lang"><title>features.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="../../../rustls/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="../../../rustls/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="doccomment">/*! |
| |
| ## Current features |
| |
| * TLS1.2 and TLS1.3. |
| * ECDSA, Ed25519 or RSA server authentication by clients. |
| * ECDSA, Ed25519 or RSA server authentication by servers. |
| * Forward secrecy using ECDHE; with curve25519, nistp256 or nistp384 curves. |
| * AES128-GCM and AES256-GCM bulk encryption, with safe nonces. |
| * ChaCha20-Poly1305 bulk encryption ([RFC7905](https://tools.ietf.org/html/rfc7905)). |
| * ALPN support. |
| * SNI support. |
| * Tunable MTU to make TLS messages match size of underlying transport. |
| * Optional use of vectored IO to minimise system calls. |
| * TLS1.2 session resumption. |
| * TLS1.2 resumption via tickets (RFC5077). |
| * TLS1.3 resumption via tickets or session storage. |
| * TLS1.3 0-RTT data for clients. |
| * Client authentication by clients. |
| * Client authentication by servers. |
| * Extended master secret support (RFC7627). |
| * Exporters (RFC5705). |
| * OCSP stapling by servers. |
| * SCT stapling by servers. |
| * SCT verification by clients. |
| |
| ## Possible future features |
| |
| * PSK support. |
| * OCSP verification by clients. |
| * Certificate pinning. |
| |
| ## Non-features |
| |
| For reasons explained in the other sections of this manual, rustls does not |
| and will not support: |
| |
| * SSL1, SSL2, SSL3, TLS1 or TLS1.1. |
| * RC4. |
| * DES or triple DES. |
| * EXPORT ciphersuites. |
| * MAC-then-encrypt ciphersuites. |
| * Ciphersuites without forward secrecy. |
| * Renegotiation. |
| * Kerberos. |
| * Compression. |
| * Discrete-log Diffie-Hellman. |
| * Automatic protocol version downgrade. |
| |
| */ |
| </span></code></pre></div> |
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