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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="Source of the Rust file `/root/.cargo/registry/src/github.com-1ecc6299db9ec823/openssl-0.10.54/src/hash.rs`."><meta name="keywords" content="rust, rustlang, rust-lang"><title>hash.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="../../openssl/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="../../openssl/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">//! Message digest (hash) computation support.
//!
//! # Examples
//!
//! Calculate a hash in one go:
//!
//! ```
//! # fn main() -&gt; Result&lt;(), Box&lt;dyn std::error::Error&gt;&gt; {
//! use openssl::hash::{hash, MessageDigest};
//!
//! let data = b&quot;\x42\xF4\x97\xE0&quot;;
//! let spec = b&quot;\x7c\x43\x0f\x17\x8a\xef\xdf\x14\x87\xfe\xe7\x14\x4e\x96\x41\xe2&quot;;
//! let res = hash(MessageDigest::md5(), data)?;
//! assert_eq!(&amp;*res, spec);
//! # Ok(()) }
//! ```
//!
//! Supply the input in chunks:
//!
//! ```
//! use openssl::hash::{Hasher, MessageDigest};
//!
//! # fn main() -&gt; Result&lt;(), Box&lt;dyn std::error::Error&gt;&gt; {
//! let mut hasher = Hasher::new(MessageDigest::sha256())?;
//! hasher.update(b&quot;test&quot;)?;
//! hasher.update(b&quot;this&quot;)?;
//! let digest: &amp;[u8] = &amp;hasher.finish()?;
//!
//! let expected = hex::decode(&quot;9740e652ab5b4acd997a7cca13d6696702ccb2d441cca59fc6e285127f28cfe6&quot;)?;
//! assert_eq!(digest, expected);
//! # Ok(()) }
//! ```
</span><span class="kw">use </span>cfg_if::cfg_if;
<span class="kw">use </span>std::ffi::CString;
<span class="kw">use </span>std::fmt;
<span class="kw">use </span>std::io;
<span class="kw">use </span>std::io::prelude::<span class="kw-2">*</span>;
<span class="kw">use </span>std::ops::{Deref, DerefMut};
<span class="kw">use </span>std::ptr;
<span class="kw">use </span><span class="kw">crate</span>::error::ErrorStack;
<span class="kw">use </span><span class="kw">crate</span>::nid::Nid;
<span class="kw">use crate</span>::{cvt, cvt_p};
<span class="macro">cfg_if! </span>{
<span class="kw">if </span><span class="attribute">#[cfg(ossl110)] </span>{
<span class="kw">use </span>ffi::{EVP_MD_CTX_free, EVP_MD_CTX_new};
} <span class="kw">else </span>{
<span class="kw">use </span>ffi::{EVP_MD_CTX_create <span class="kw">as </span>EVP_MD_CTX_new, EVP_MD_CTX_destroy <span class="kw">as </span>EVP_MD_CTX_free};
}
}
<span class="doccomment">/// A message digest algorithm.
</span><span class="attribute">#[derive(Copy, Clone, PartialEq, Eq)]
</span><span class="kw">pub struct </span>MessageDigest(<span class="kw-2">*const </span>ffi::EVP_MD);
<span class="kw">impl </span>MessageDigest {
<span class="doccomment">/// Creates a `MessageDigest` from a raw OpenSSL pointer.
///
/// # Safety
///
/// The caller must ensure the pointer is valid.
</span><span class="kw">pub unsafe fn </span>from_ptr(x: <span class="kw-2">*const </span>ffi::EVP_MD) -&gt; <span class="self">Self </span>{
MessageDigest(x)
}
<span class="doccomment">/// Returns the `MessageDigest` corresponding to an `Nid`.
///
/// This corresponds to [`EVP_get_digestbynid`].
///
/// [`EVP_get_digestbynid`]: https://www.openssl.org/docs/manmaster/crypto/EVP_DigestInit.html
</span><span class="kw">pub fn </span>from_nid(type_: Nid) -&gt; <span class="prelude-ty">Option</span>&lt;MessageDigest&gt; {
<span class="kw">unsafe </span>{
<span class="kw">let </span>ptr = ffi::EVP_get_digestbynid(type_.as_raw());
<span class="kw">if </span>ptr.is_null() {
<span class="prelude-val">None
</span>} <span class="kw">else </span>{
<span class="prelude-val">Some</span>(MessageDigest(ptr))
}
}
}
<span class="doccomment">/// Returns the `MessageDigest` corresponding to an algorithm name.
///
/// This corresponds to [`EVP_get_digestbyname`].
///
/// [`EVP_get_digestbyname`]: https://www.openssl.org/docs/manmaster/crypto/EVP_DigestInit.html
</span><span class="kw">pub fn </span>from_name(name: <span class="kw-2">&amp;</span>str) -&gt; <span class="prelude-ty">Option</span>&lt;MessageDigest&gt; {
ffi::init();
<span class="kw">let </span>name = CString::new(name).ok()<span class="question-mark">?</span>;
<span class="kw">unsafe </span>{
<span class="kw">let </span>ptr = ffi::EVP_get_digestbyname(name.as_ptr());
<span class="kw">if </span>ptr.is_null() {
<span class="prelude-val">None
</span>} <span class="kw">else </span>{
<span class="prelude-val">Some</span>(MessageDigest(ptr))
}
}
}
<span class="attribute">#[cfg(not(boringssl))]
</span><span class="kw">pub fn </span>null() -&gt; MessageDigest {
<span class="kw">unsafe </span>{ MessageDigest(ffi::EVP_md_null()) }
}
<span class="kw">pub fn </span>md5() -&gt; MessageDigest {
<span class="kw">unsafe </span>{ MessageDigest(ffi::EVP_md5()) }
}
<span class="kw">pub fn </span>sha1() -&gt; MessageDigest {
<span class="kw">unsafe </span>{ MessageDigest(ffi::EVP_sha1()) }
}
<span class="kw">pub fn </span>sha224() -&gt; MessageDigest {
<span class="kw">unsafe </span>{ MessageDigest(ffi::EVP_sha224()) }
}
<span class="kw">pub fn </span>sha256() -&gt; MessageDigest {
<span class="kw">unsafe </span>{ MessageDigest(ffi::EVP_sha256()) }
}
<span class="kw">pub fn </span>sha384() -&gt; MessageDigest {
<span class="kw">unsafe </span>{ MessageDigest(ffi::EVP_sha384()) }
}
<span class="kw">pub fn </span>sha512() -&gt; MessageDigest {
<span class="kw">unsafe </span>{ MessageDigest(ffi::EVP_sha512()) }
}
<span class="attribute">#[cfg(ossl111)]
</span><span class="kw">pub fn </span>sha3_224() -&gt; MessageDigest {
<span class="kw">unsafe </span>{ MessageDigest(ffi::EVP_sha3_224()) }
}
<span class="attribute">#[cfg(ossl111)]
</span><span class="kw">pub fn </span>sha3_256() -&gt; MessageDigest {
<span class="kw">unsafe </span>{ MessageDigest(ffi::EVP_sha3_256()) }
}
<span class="attribute">#[cfg(ossl111)]
</span><span class="kw">pub fn </span>sha3_384() -&gt; MessageDigest {
<span class="kw">unsafe </span>{ MessageDigest(ffi::EVP_sha3_384()) }
}
<span class="attribute">#[cfg(ossl111)]
</span><span class="kw">pub fn </span>sha3_512() -&gt; MessageDigest {
<span class="kw">unsafe </span>{ MessageDigest(ffi::EVP_sha3_512()) }
}
<span class="attribute">#[cfg(ossl111)]
</span><span class="kw">pub fn </span>shake_128() -&gt; MessageDigest {
<span class="kw">unsafe </span>{ MessageDigest(ffi::EVP_shake128()) }
}
<span class="attribute">#[cfg(ossl111)]
</span><span class="kw">pub fn </span>shake_256() -&gt; MessageDigest {
<span class="kw">unsafe </span>{ MessageDigest(ffi::EVP_shake256()) }
}
<span class="attribute">#[cfg(not(any(boringssl, osslconf = <span class="string">&quot;OPENSSL_NO_RMD160&quot;</span>)))]
</span><span class="kw">pub fn </span>ripemd160() -&gt; MessageDigest {
<span class="kw">unsafe </span>{ MessageDigest(ffi::EVP_ripemd160()) }
}
<span class="attribute">#[cfg(all(any(ossl111, libressl291), not(osslconf = <span class="string">&quot;OPENSSL_NO_SM3&quot;</span>)))]
</span><span class="kw">pub fn </span>sm3() -&gt; MessageDigest {
<span class="kw">unsafe </span>{ MessageDigest(ffi::EVP_sm3()) }
}
<span class="attribute">#[allow(clippy::trivially_copy_pass_by_ref)]
</span><span class="kw">pub fn </span>as_ptr(<span class="kw-2">&amp;</span><span class="self">self</span>) -&gt; <span class="kw-2">*const </span>ffi::EVP_MD {
<span class="self">self</span>.<span class="number">0
</span>}
<span class="doccomment">/// The block size of the digest in bytes.
</span><span class="attribute">#[allow(clippy::trivially_copy_pass_by_ref)]
</span><span class="kw">pub fn </span>block_size(<span class="kw-2">&amp;</span><span class="self">self</span>) -&gt; usize {
<span class="kw">unsafe </span>{ ffi::EVP_MD_block_size(<span class="self">self</span>.<span class="number">0</span>) <span class="kw">as </span>usize }
}
<span class="doccomment">/// The size of the digest in bytes.
</span><span class="attribute">#[allow(clippy::trivially_copy_pass_by_ref)]
</span><span class="kw">pub fn </span>size(<span class="kw-2">&amp;</span><span class="self">self</span>) -&gt; usize {
<span class="kw">unsafe </span>{ ffi::EVP_MD_size(<span class="self">self</span>.<span class="number">0</span>) <span class="kw">as </span>usize }
}
<span class="doccomment">/// The name of the digest.
</span><span class="attribute">#[allow(clippy::trivially_copy_pass_by_ref)]
</span><span class="kw">pub fn </span>type_(<span class="kw-2">&amp;</span><span class="self">self</span>) -&gt; Nid {
Nid::from_raw(<span class="kw">unsafe </span>{ ffi::EVP_MD_type(<span class="self">self</span>.<span class="number">0</span>) })
}
}
<span class="kw">unsafe impl </span>Sync <span class="kw">for </span>MessageDigest {}
<span class="kw">unsafe impl </span>Send <span class="kw">for </span>MessageDigest {}
<span class="attribute">#[derive(PartialEq, Copy, Clone)]
</span><span class="kw">enum </span>State {
Reset,
Updated,
Finalized,
}
<span class="kw">use </span><span class="self">self</span>::State::<span class="kw-2">*</span>;
<span class="doccomment">/// Provides message digest (hash) computation.
///
/// # Examples
///
/// ```
/// use openssl::hash::{Hasher, MessageDigest};
///
/// # fn main() -&gt; Result&lt;(), Box&lt;dyn std::error::Error&gt;&gt; {
/// let data = [b&quot;\x42\xF4&quot;, b&quot;\x97\xE0&quot;];
/// let spec = b&quot;\x7c\x43\x0f\x17\x8a\xef\xdf\x14\x87\xfe\xe7\x14\x4e\x96\x41\xe2&quot;;
/// let mut h = Hasher::new(MessageDigest::md5())?;
/// h.update(data[0])?;
/// h.update(data[1])?;
/// let res = h.finish()?;
/// assert_eq!(&amp;*res, spec);
/// # Ok(()) }
/// ```
///
/// # Warning
///
/// Don&#39;t actually use MD5 and SHA-1 hashes, they&#39;re not secure anymore.
///
/// Don&#39;t ever hash passwords, use the functions in the `pkcs5` module or bcrypt/scrypt instead.
///
/// For extendable output functions (XOFs, i.e. SHAKE128/SHAKE256),
/// you must use [`Hasher::finish_xof`] instead of [`Hasher::finish`]
/// and provide a `buf` to store the hash. The hash will be as long as
/// the `buf`.
</span><span class="kw">pub struct </span>Hasher {
ctx: <span class="kw-2">*mut </span>ffi::EVP_MD_CTX,
md: <span class="kw-2">*const </span>ffi::EVP_MD,
type_: MessageDigest,
state: State,
}
<span class="kw">unsafe impl </span>Sync <span class="kw">for </span>Hasher {}
<span class="kw">unsafe impl </span>Send <span class="kw">for </span>Hasher {}
<span class="kw">impl </span>Hasher {
<span class="doccomment">/// Creates a new `Hasher` with the specified hash type.
</span><span class="kw">pub fn </span>new(ty: MessageDigest) -&gt; <span class="prelude-ty">Result</span>&lt;Hasher, ErrorStack&gt; {
ffi::init();
<span class="kw">let </span>ctx = <span class="kw">unsafe </span>{ cvt_p(EVP_MD_CTX_new())<span class="question-mark">? </span>};
<span class="kw">let </span><span class="kw-2">mut </span>h = Hasher {
ctx,
md: ty.as_ptr(),
type_: ty,
state: Finalized,
};
h.init()<span class="question-mark">?</span>;
<span class="prelude-val">Ok</span>(h)
}
<span class="kw">fn </span>init(<span class="kw-2">&amp;mut </span><span class="self">self</span>) -&gt; <span class="prelude-ty">Result</span>&lt;(), ErrorStack&gt; {
<span class="kw">match </span><span class="self">self</span>.state {
Reset =&gt; <span class="kw">return </span><span class="prelude-val">Ok</span>(()),
Updated =&gt; {
<span class="self">self</span>.finish()<span class="question-mark">?</span>;
}
Finalized =&gt; (),
}
<span class="kw">unsafe </span>{
cvt(ffi::EVP_DigestInit_ex(<span class="self">self</span>.ctx, <span class="self">self</span>.md, ptr::null_mut()))<span class="question-mark">?</span>;
}
<span class="self">self</span>.state = Reset;
<span class="prelude-val">Ok</span>(())
}
<span class="doccomment">/// Feeds data into the hasher.
</span><span class="kw">pub fn </span>update(<span class="kw-2">&amp;mut </span><span class="self">self</span>, data: <span class="kw-2">&amp;</span>[u8]) -&gt; <span class="prelude-ty">Result</span>&lt;(), ErrorStack&gt; {
<span class="kw">if </span><span class="self">self</span>.state == Finalized {
<span class="self">self</span>.init()<span class="question-mark">?</span>;
}
<span class="kw">unsafe </span>{
cvt(ffi::EVP_DigestUpdate(
<span class="self">self</span>.ctx,
data.as_ptr() <span class="kw">as </span><span class="kw-2">*mut </span><span class="kw">_</span>,
data.len(),
))<span class="question-mark">?</span>;
}
<span class="self">self</span>.state = Updated;
<span class="prelude-val">Ok</span>(())
}
<span class="doccomment">/// Returns the hash of the data written and resets the non-XOF hasher.
</span><span class="kw">pub fn </span>finish(<span class="kw-2">&amp;mut </span><span class="self">self</span>) -&gt; <span class="prelude-ty">Result</span>&lt;DigestBytes, ErrorStack&gt; {
<span class="kw">if </span><span class="self">self</span>.state == Finalized {
<span class="self">self</span>.init()<span class="question-mark">?</span>;
}
<span class="kw">unsafe </span>{
<span class="attribute">#[cfg(not(boringssl))]
</span><span class="kw">let </span><span class="kw-2">mut </span>len = ffi::EVP_MAX_MD_SIZE;
<span class="attribute">#[cfg(boringssl)]
</span><span class="kw">let </span><span class="kw-2">mut </span>len = ffi::EVP_MAX_MD_SIZE <span class="kw">as </span>u32;
<span class="kw">let </span><span class="kw-2">mut </span>buf = [<span class="number">0</span>; ffi::EVP_MAX_MD_SIZE <span class="kw">as </span>usize];
cvt(ffi::EVP_DigestFinal_ex(
<span class="self">self</span>.ctx,
buf.as_mut_ptr(),
<span class="kw-2">&amp;mut </span>len,
))<span class="question-mark">?</span>;
<span class="self">self</span>.state = Finalized;
<span class="prelude-val">Ok</span>(DigestBytes {
buf,
len: len <span class="kw">as </span>usize,
})
}
}
<span class="doccomment">/// Writes the hash of the data into the supplied buf and resets the XOF hasher.
/// The hash will be as long as the buf.
</span><span class="attribute">#[cfg(ossl111)]
</span><span class="kw">pub fn </span>finish_xof(<span class="kw-2">&amp;mut </span><span class="self">self</span>, buf: <span class="kw-2">&amp;mut </span>[u8]) -&gt; <span class="prelude-ty">Result</span>&lt;(), ErrorStack&gt; {
<span class="kw">if </span><span class="self">self</span>.state == Finalized {
<span class="self">self</span>.init()<span class="question-mark">?</span>;
}
<span class="kw">unsafe </span>{
cvt(ffi::EVP_DigestFinalXOF(
<span class="self">self</span>.ctx,
buf.as_mut_ptr(),
buf.len(),
))<span class="question-mark">?</span>;
<span class="self">self</span>.state = Finalized;
<span class="prelude-val">Ok</span>(())
}
}
}
<span class="kw">impl </span>Write <span class="kw">for </span>Hasher {
<span class="attribute">#[inline]
</span><span class="kw">fn </span>write(<span class="kw-2">&amp;mut </span><span class="self">self</span>, buf: <span class="kw-2">&amp;</span>[u8]) -&gt; io::Result&lt;usize&gt; {
<span class="self">self</span>.update(buf)<span class="question-mark">?</span>;
<span class="prelude-val">Ok</span>(buf.len())
}
<span class="kw">fn </span>flush(<span class="kw-2">&amp;mut </span><span class="self">self</span>) -&gt; io::Result&lt;()&gt; {
<span class="prelude-val">Ok</span>(())
}
}
<span class="kw">impl </span>Clone <span class="kw">for </span>Hasher {
<span class="kw">fn </span>clone(<span class="kw-2">&amp;</span><span class="self">self</span>) -&gt; Hasher {
<span class="kw">let </span>ctx = <span class="kw">unsafe </span>{
<span class="kw">let </span>ctx = EVP_MD_CTX_new();
<span class="macro">assert!</span>(!ctx.is_null());
<span class="kw">let </span>r = ffi::EVP_MD_CTX_copy_ex(ctx, <span class="self">self</span>.ctx);
<span class="macro">assert_eq!</span>(r, <span class="number">1</span>);
ctx
};
Hasher {
ctx,
md: <span class="self">self</span>.md,
type_: <span class="self">self</span>.type_,
state: <span class="self">self</span>.state,
}
}
}
<span class="kw">impl </span>Drop <span class="kw">for </span>Hasher {
<span class="kw">fn </span>drop(<span class="kw-2">&amp;mut </span><span class="self">self</span>) {
<span class="kw">unsafe </span>{
<span class="kw">if </span><span class="self">self</span>.state != Finalized {
drop(<span class="self">self</span>.finish());
}
EVP_MD_CTX_free(<span class="self">self</span>.ctx);
}
}
}
<span class="doccomment">/// The resulting bytes of a digest.
///
/// This type derefs to a byte slice - it exists to avoid allocating memory to
/// store the digest data.
</span><span class="attribute">#[derive(Copy)]
</span><span class="kw">pub struct </span>DigestBytes {
<span class="kw">pub</span>(<span class="kw">crate</span>) buf: [u8; ffi::EVP_MAX_MD_SIZE <span class="kw">as </span>usize],
<span class="kw">pub</span>(<span class="kw">crate</span>) len: usize,
}
<span class="kw">impl </span>Clone <span class="kw">for </span>DigestBytes {
<span class="attribute">#[inline]
</span><span class="kw">fn </span>clone(<span class="kw-2">&amp;</span><span class="self">self</span>) -&gt; DigestBytes {
<span class="kw-2">*</span><span class="self">self
</span>}
}
<span class="kw">impl </span>Deref <span class="kw">for </span>DigestBytes {
<span class="kw">type </span>Target = [u8];
<span class="attribute">#[inline]
</span><span class="kw">fn </span>deref(<span class="kw-2">&amp;</span><span class="self">self</span>) -&gt; <span class="kw-2">&amp;</span>[u8] {
<span class="kw-2">&amp;</span><span class="self">self</span>.buf[..<span class="self">self</span>.len]
}
}
<span class="kw">impl </span>DerefMut <span class="kw">for </span>DigestBytes {
<span class="attribute">#[inline]
</span><span class="kw">fn </span>deref_mut(<span class="kw-2">&amp;mut </span><span class="self">self</span>) -&gt; <span class="kw-2">&amp;mut </span>[u8] {
<span class="kw-2">&amp;mut </span><span class="self">self</span>.buf[..<span class="self">self</span>.len]
}
}
<span class="kw">impl </span>AsRef&lt;[u8]&gt; <span class="kw">for </span>DigestBytes {
<span class="attribute">#[inline]
</span><span class="kw">fn </span>as_ref(<span class="kw-2">&amp;</span><span class="self">self</span>) -&gt; <span class="kw-2">&amp;</span>[u8] {
<span class="self">self</span>.deref()
}
}
<span class="kw">impl </span>fmt::Debug <span class="kw">for </span>DigestBytes {
<span class="kw">fn </span>fmt(<span class="kw-2">&amp;</span><span class="self">self</span>, fmt: <span class="kw-2">&amp;mut </span>fmt::Formatter&lt;<span class="lifetime">&#39;_</span>&gt;) -&gt; fmt::Result {
fmt::Debug::fmt(<span class="kw-2">&amp;**</span><span class="self">self</span>, fmt)
}
}
<span class="doccomment">/// Computes the hash of the `data` with the non-XOF hasher `t`.
///
/// # Examples
///
/// ```
/// # fn main() -&gt; Result&lt;(), Box&lt;dyn std::error::Error&gt;&gt; {
/// use openssl::hash::{hash, MessageDigest};
///
/// let data = b&quot;\x42\xF4\x97\xE0&quot;;
/// let spec = b&quot;\x7c\x43\x0f\x17\x8a\xef\xdf\x14\x87\xfe\xe7\x14\x4e\x96\x41\xe2&quot;;
/// let res = hash(MessageDigest::md5(), data)?;
/// assert_eq!(&amp;*res, spec);
/// # Ok(()) }
/// ```
</span><span class="kw">pub fn </span>hash(t: MessageDigest, data: <span class="kw-2">&amp;</span>[u8]) -&gt; <span class="prelude-ty">Result</span>&lt;DigestBytes, ErrorStack&gt; {
<span class="kw">let </span><span class="kw-2">mut </span>h = Hasher::new(t)<span class="question-mark">?</span>;
h.update(data)<span class="question-mark">?</span>;
h.finish()
}
<span class="doccomment">/// Computes the hash of the `data` with the XOF hasher `t` and stores it in `buf`.
///
/// # Examples
///
/// ```
/// use openssl::hash::{hash_xof, MessageDigest};
///
/// let data = b&quot;\x41\x6c\x6c\x20\x79\x6f\x75\x72\x20\x62\x61\x73\x65\x20\x61\x72\x65\x20\x62\x65\x6c\x6f\x6e\x67\x20\x74\x6f\x20\x75\x73&quot;;
/// let spec = b&quot;\x49\xd0\x69\x7f\xf5\x08\x11\x1d\x8b\x84\xf1\x5e\x46\xda\xf1\x35&quot;;
/// let mut buf = vec![0; 16];
/// hash_xof(MessageDigest::shake_128(), data, buf.as_mut_slice()).unwrap();
/// assert_eq!(buf, spec);
/// ```
///
</span><span class="attribute">#[cfg(ossl111)]
</span><span class="kw">pub fn </span>hash_xof(t: MessageDigest, data: <span class="kw-2">&amp;</span>[u8], buf: <span class="kw-2">&amp;mut </span>[u8]) -&gt; <span class="prelude-ty">Result</span>&lt;(), ErrorStack&gt; {
<span class="kw">let </span><span class="kw-2">mut </span>h = Hasher::new(t)<span class="question-mark">?</span>;
h.update(data)<span class="question-mark">?</span>;
h.finish_xof(buf)
}
<span class="attribute">#[cfg(test)]
</span><span class="kw">mod </span>tests {
<span class="kw">use </span>hex::{<span class="self">self</span>, FromHex};
<span class="kw">use </span>std::io::prelude::<span class="kw-2">*</span>;
<span class="kw">use super</span>::<span class="kw-2">*</span>;
<span class="kw">fn </span>hash_test(hashtype: MessageDigest, hashtest: <span class="kw-2">&amp;</span>(<span class="kw-2">&amp;</span>str, <span class="kw-2">&amp;</span>str)) {
<span class="kw">let </span>res = hash(hashtype, <span class="kw-2">&amp;</span>Vec::from_hex(hashtest.<span class="number">0</span>).unwrap()).unwrap();
<span class="macro">assert_eq!</span>(hex::encode(res), hashtest.<span class="number">1</span>);
}
<span class="attribute">#[cfg(ossl111)]
</span><span class="kw">fn </span>hash_xof_test(hashtype: MessageDigest, hashtest: <span class="kw-2">&amp;</span>(<span class="kw-2">&amp;</span>str, <span class="kw-2">&amp;</span>str)) {
<span class="kw">let </span>expected = Vec::from_hex(hashtest.<span class="number">1</span>).unwrap();
<span class="kw">let </span><span class="kw-2">mut </span>buf = <span class="macro">vec!</span>[<span class="number">0</span>; expected.len()];
hash_xof(
hashtype,
<span class="kw-2">&amp;</span>Vec::from_hex(hashtest.<span class="number">0</span>).unwrap(),
buf.as_mut_slice(),
)
.unwrap();
<span class="macro">assert_eq!</span>(buf, expected);
}
<span class="kw">fn </span>hash_recycle_test(h: <span class="kw-2">&amp;mut </span>Hasher, hashtest: <span class="kw-2">&amp;</span>(<span class="kw-2">&amp;</span>str, <span class="kw-2">&amp;</span>str)) {
h.write_all(<span class="kw-2">&amp;</span>Vec::from_hex(hashtest.<span class="number">0</span>).unwrap()).unwrap();
<span class="kw">let </span>res = h.finish().unwrap();
<span class="macro">assert_eq!</span>(hex::encode(res), hashtest.<span class="number">1</span>);
}
<span class="comment">// Test vectors from http://www.nsrl.nist.gov/testdata/
</span><span class="kw">const </span>MD5_TESTS: [(<span class="kw-2">&amp;</span>str, <span class="kw-2">&amp;</span>str); <span class="number">13</span>] = [
(<span class="string">&quot;&quot;</span>, <span class="string">&quot;d41d8cd98f00b204e9800998ecf8427e&quot;</span>),
(<span class="string">&quot;7F&quot;</span>, <span class="string">&quot;83acb6e67e50e31db6ed341dd2de1595&quot;</span>),
(<span class="string">&quot;EC9C&quot;</span>, <span class="string">&quot;0b07f0d4ca797d8ac58874f887cb0b68&quot;</span>),
(<span class="string">&quot;FEE57A&quot;</span>, <span class="string">&quot;e0d583171eb06d56198fc0ef22173907&quot;</span>),
(<span class="string">&quot;42F497E0&quot;</span>, <span class="string">&quot;7c430f178aefdf1487fee7144e9641e2&quot;</span>),
(<span class="string">&quot;C53B777F1C&quot;</span>, <span class="string">&quot;75ef141d64cb37ec423da2d9d440c925&quot;</span>),
(<span class="string">&quot;89D5B576327B&quot;</span>, <span class="string">&quot;ebbaf15eb0ed784c6faa9dc32831bf33&quot;</span>),
(<span class="string">&quot;5D4CCE781EB190&quot;</span>, <span class="string">&quot;ce175c4b08172019f05e6b5279889f2c&quot;</span>),
(<span class="string">&quot;81901FE94932D7B9&quot;</span>, <span class="string">&quot;cd4d2f62b8cdb3a0cf968a735a239281&quot;</span>),
(<span class="string">&quot;C9FFDEE7788EFB4EC9&quot;</span>, <span class="string">&quot;e0841a231ab698db30c6c0f3f246c014&quot;</span>),
(<span class="string">&quot;66AC4B7EBA95E53DC10B&quot;</span>, <span class="string">&quot;a3b3cea71910d9af56742aa0bb2fe329&quot;</span>),
(<span class="string">&quot;A510CD18F7A56852EB0319&quot;</span>, <span class="string">&quot;577e216843dd11573574d3fb209b97d8&quot;</span>),
(
<span class="string">&quot;AAED18DBE8938C19ED734A8D&quot;</span>,
<span class="string">&quot;6f80fb775f27e0a4ce5c2f42fc72c5f1&quot;</span>,
),
];
<span class="attribute">#[test]
</span><span class="kw">fn </span>test_md5() {
<span class="kw">for </span>test <span class="kw">in </span>MD5_TESTS.iter() {
hash_test(MessageDigest::md5(), test);
}
<span class="macro">assert_eq!</span>(MessageDigest::md5().block_size(), <span class="number">64</span>);
<span class="macro">assert_eq!</span>(MessageDigest::md5().size(), <span class="number">16</span>);
<span class="macro">assert_eq!</span>(MessageDigest::md5().type_().as_raw(), Nid::MD5.as_raw());
}
<span class="attribute">#[test]
</span><span class="kw">fn </span>test_md5_recycle() {
<span class="kw">let </span><span class="kw-2">mut </span>h = Hasher::new(MessageDigest::md5()).unwrap();
<span class="kw">for </span>test <span class="kw">in </span>MD5_TESTS.iter() {
hash_recycle_test(<span class="kw-2">&amp;mut </span>h, test);
}
}
<span class="attribute">#[test]
</span><span class="kw">fn </span>test_finish_twice() {
<span class="kw">let </span><span class="kw-2">mut </span>h = Hasher::new(MessageDigest::md5()).unwrap();
h.write_all(<span class="kw-2">&amp;</span>Vec::from_hex(MD5_TESTS[<span class="number">6</span>].<span class="number">0</span>).unwrap())
.unwrap();
h.finish().unwrap();
<span class="kw">let </span>res = h.finish().unwrap();
<span class="kw">let </span>null = hash(MessageDigest::md5(), <span class="kw-2">&amp;</span>[]).unwrap();
<span class="macro">assert_eq!</span>(<span class="kw-2">&amp;*</span>res, <span class="kw-2">&amp;*</span>null);
}
<span class="attribute">#[test]
#[allow(clippy::redundant_clone)]
</span><span class="kw">fn </span>test_clone() {
<span class="kw">let </span>i = <span class="number">7</span>;
<span class="kw">let </span>inp = Vec::from_hex(MD5_TESTS[i].<span class="number">0</span>).unwrap();
<span class="macro">assert!</span>(inp.len() &gt; <span class="number">2</span>);
<span class="kw">let </span>p = inp.len() / <span class="number">2</span>;
<span class="kw">let </span>h0 = Hasher::new(MessageDigest::md5()).unwrap();
<span class="macro">println!</span>(<span class="string">&quot;Clone a new hasher&quot;</span>);
<span class="kw">let </span><span class="kw-2">mut </span>h1 = h0.clone();
h1.write_all(<span class="kw-2">&amp;</span>inp[..p]).unwrap();
{
<span class="macro">println!</span>(<span class="string">&quot;Clone an updated hasher&quot;</span>);
<span class="kw">let </span><span class="kw-2">mut </span>h2 = h1.clone();
h2.write_all(<span class="kw-2">&amp;</span>inp[p..]).unwrap();
<span class="kw">let </span>res = h2.finish().unwrap();
<span class="macro">assert_eq!</span>(hex::encode(res), MD5_TESTS[i].<span class="number">1</span>);
}
h1.write_all(<span class="kw-2">&amp;</span>inp[p..]).unwrap();
<span class="kw">let </span>res = h1.finish().unwrap();
<span class="macro">assert_eq!</span>(hex::encode(res), MD5_TESTS[i].<span class="number">1</span>);
<span class="macro">println!</span>(<span class="string">&quot;Clone a finished hasher&quot;</span>);
<span class="kw">let </span><span class="kw-2">mut </span>h3 = h1.clone();
h3.write_all(<span class="kw-2">&amp;</span>Vec::from_hex(MD5_TESTS[i + <span class="number">1</span>].<span class="number">0</span>).unwrap())
.unwrap();
<span class="kw">let </span>res = h3.finish().unwrap();
<span class="macro">assert_eq!</span>(hex::encode(res), MD5_TESTS[i + <span class="number">1</span>].<span class="number">1</span>);
}
<span class="attribute">#[test]
</span><span class="kw">fn </span>test_sha1() {
<span class="kw">let </span>tests = [(<span class="string">&quot;616263&quot;</span>, <span class="string">&quot;a9993e364706816aba3e25717850c26c9cd0d89d&quot;</span>)];
<span class="kw">for </span>test <span class="kw">in </span>tests.iter() {
hash_test(MessageDigest::sha1(), test);
}
<span class="macro">assert_eq!</span>(MessageDigest::sha1().block_size(), <span class="number">64</span>);
<span class="macro">assert_eq!</span>(MessageDigest::sha1().size(), <span class="number">20</span>);
<span class="macro">assert_eq!</span>(MessageDigest::sha1().type_().as_raw(), Nid::SHA1.as_raw());
}
<span class="attribute">#[test]
</span><span class="kw">fn </span>test_sha256() {
<span class="kw">let </span>tests = [(
<span class="string">&quot;616263&quot;</span>,
<span class="string">&quot;ba7816bf8f01cfea414140de5dae2223b00361a396177a9cb410ff61f20015ad&quot;</span>,
)];
<span class="kw">for </span>test <span class="kw">in </span>tests.iter() {
hash_test(MessageDigest::sha256(), test);
}
<span class="macro">assert_eq!</span>(MessageDigest::sha256().block_size(), <span class="number">64</span>);
<span class="macro">assert_eq!</span>(MessageDigest::sha256().size(), <span class="number">32</span>);
<span class="macro">assert_eq!</span>(
MessageDigest::sha256().type_().as_raw(),
Nid::SHA256.as_raw()
);
}
<span class="attribute">#[test]
</span><span class="kw">fn </span>test_sha512() {
<span class="kw">let </span>tests = [(
<span class="string">&quot;737465766566696e647365766572797468696e67&quot;</span>,
<span class="string">&quot;ba61d1f1af0f2dd80729f6cc900f19c0966bd38ba5c75e4471ef11b771dfe7551afab7fcbd300fdc4418f2\
b07a028fcd99e7b6446a566f2d9bcd7c604a1ea801&quot;</span>,
)];
<span class="kw">for </span>test <span class="kw">in </span>tests.iter() {
hash_test(MessageDigest::sha512(), test);
}
<span class="macro">assert_eq!</span>(MessageDigest::sha512().block_size(), <span class="number">128</span>);
<span class="macro">assert_eq!</span>(MessageDigest::sha512().size(), <span class="number">64</span>);
<span class="macro">assert_eq!</span>(
MessageDigest::sha512().type_().as_raw(),
Nid::SHA512.as_raw()
);
}
<span class="attribute">#[cfg(ossl111)]
#[test]
</span><span class="kw">fn </span>test_sha3_224() {
<span class="kw">let </span>tests = [(
<span class="string">&quot;416c6c20796f75722062617365206172652062656c6f6e6720746f207573&quot;</span>,
<span class="string">&quot;1de092dd9fbcbbf450f26264f4778abd48af851f2832924554c56913&quot;</span>,
)];
<span class="kw">for </span>test <span class="kw">in </span>tests.iter() {
hash_test(MessageDigest::sha3_224(), test);
}
<span class="macro">assert_eq!</span>(MessageDigest::sha3_224().block_size(), <span class="number">144</span>);
<span class="macro">assert_eq!</span>(MessageDigest::sha3_224().size(), <span class="number">28</span>);
<span class="macro">assert_eq!</span>(
MessageDigest::sha3_224().type_().as_raw(),
Nid::SHA3_224.as_raw()
);
}
<span class="attribute">#[cfg(ossl111)]
#[test]
</span><span class="kw">fn </span>test_sha3_256() {
<span class="kw">let </span>tests = [(
<span class="string">&quot;416c6c20796f75722062617365206172652062656c6f6e6720746f207573&quot;</span>,
<span class="string">&quot;b38e38f08bc1c0091ed4b5f060fe13e86aa4179578513ad11a6e3abba0062f61&quot;</span>,
)];
<span class="kw">for </span>test <span class="kw">in </span>tests.iter() {
hash_test(MessageDigest::sha3_256(), test);
}
<span class="macro">assert_eq!</span>(MessageDigest::sha3_256().block_size(), <span class="number">136</span>);
<span class="macro">assert_eq!</span>(MessageDigest::sha3_256().size(), <span class="number">32</span>);
<span class="macro">assert_eq!</span>(
MessageDigest::sha3_256().type_().as_raw(),
Nid::SHA3_256.as_raw()
);
}
<span class="attribute">#[cfg(ossl111)]
#[test]
</span><span class="kw">fn </span>test_sha3_384() {
<span class="kw">let </span>tests = [(<span class="string">&quot;416c6c20796f75722062617365206172652062656c6f6e6720746f207573&quot;</span>,
<span class="string">&quot;966ee786ab3482dd811bf7c8fa8db79aa1f52f6c3c369942ef14240ebd857c6ff626ec35d9e131ff64d328\
ef2008ff16&quot;
</span>)];
<span class="kw">for </span>test <span class="kw">in </span>tests.iter() {
hash_test(MessageDigest::sha3_384(), test);
}
<span class="macro">assert_eq!</span>(MessageDigest::sha3_384().block_size(), <span class="number">104</span>);
<span class="macro">assert_eq!</span>(MessageDigest::sha3_384().size(), <span class="number">48</span>);
<span class="macro">assert_eq!</span>(
MessageDigest::sha3_384().type_().as_raw(),
Nid::SHA3_384.as_raw()
);
}
<span class="attribute">#[cfg(ossl111)]
#[test]
</span><span class="kw">fn </span>test_sha3_512() {
<span class="kw">let </span>tests = [(<span class="string">&quot;416c6c20796f75722062617365206172652062656c6f6e6720746f207573&quot;</span>,
<span class="string">&quot;c072288ef728cd53a029c47687960b9225893532f42b923156e37020bdc1eda753aafbf30af859d4f4c3a1\
807caee3a79f8eb02dcd61589fbbdf5f40c8787a72&quot;
</span>)];
<span class="kw">for </span>test <span class="kw">in </span>tests.iter() {
hash_test(MessageDigest::sha3_512(), test);
}
<span class="macro">assert_eq!</span>(MessageDigest::sha3_512().block_size(), <span class="number">72</span>);
<span class="macro">assert_eq!</span>(MessageDigest::sha3_512().size(), <span class="number">64</span>);
<span class="macro">assert_eq!</span>(
MessageDigest::sha3_512().type_().as_raw(),
Nid::SHA3_512.as_raw()
);
}
<span class="attribute">#[cfg(ossl111)]
#[test]
</span><span class="kw">fn </span>test_shake_128() {
<span class="kw">let </span>tests = [(
<span class="string">&quot;416c6c20796f75722062617365206172652062656c6f6e6720746f207573&quot;</span>,
<span class="string">&quot;49d0697ff508111d8b84f15e46daf135&quot;</span>,
)];
<span class="kw">for </span>test <span class="kw">in </span>tests.iter() {
hash_xof_test(MessageDigest::shake_128(), test);
}
<span class="macro">assert_eq!</span>(MessageDigest::shake_128().block_size(), <span class="number">168</span>);
<span class="macro">assert_eq!</span>(MessageDigest::shake_128().size(), <span class="number">16</span>);
<span class="macro">assert_eq!</span>(
MessageDigest::shake_128().type_().as_raw(),
Nid::SHAKE128.as_raw()
);
}
<span class="attribute">#[cfg(ossl111)]
#[test]
</span><span class="kw">fn </span>test_shake_256() {
<span class="kw">let </span>tests = [(
<span class="string">&quot;416c6c20796f75722062617365206172652062656c6f6e6720746f207573&quot;</span>,
<span class="string">&quot;4e2dfdaa75d1e049d0eaeffe28e76b17cea47b650fb8826fe48b94664326a697&quot;</span>,
)];
<span class="kw">for </span>test <span class="kw">in </span>tests.iter() {
hash_xof_test(MessageDigest::shake_256(), test);
}
<span class="macro">assert_eq!</span>(MessageDigest::shake_256().block_size(), <span class="number">136</span>);
<span class="macro">assert_eq!</span>(MessageDigest::shake_256().size(), <span class="number">32</span>);
<span class="macro">assert_eq!</span>(
MessageDigest::shake_256().type_().as_raw(),
Nid::SHAKE256.as_raw()
);
}
<span class="attribute">#[test]
#[cfg(not(boringssl))]
#[cfg_attr(ossl300, ignore)]
</span><span class="kw">fn </span>test_ripemd160() {
<span class="attribute">#[cfg(ossl300)]
</span><span class="kw">let </span>_provider = <span class="kw">crate</span>::provider::Provider::try_load(<span class="prelude-val">None</span>, <span class="string">&quot;legacy&quot;</span>, <span class="bool-val">true</span>).unwrap();
<span class="kw">let </span>tests = [(<span class="string">&quot;616263&quot;</span>, <span class="string">&quot;8eb208f7e05d987a9b044a8e98c6b087f15a0bfc&quot;</span>)];
<span class="kw">for </span>test <span class="kw">in </span>tests.iter() {
hash_test(MessageDigest::ripemd160(), test);
}
<span class="macro">assert_eq!</span>(MessageDigest::ripemd160().block_size(), <span class="number">64</span>);
<span class="macro">assert_eq!</span>(MessageDigest::ripemd160().size(), <span class="number">20</span>);
<span class="macro">assert_eq!</span>(
MessageDigest::ripemd160().type_().as_raw(),
Nid::RIPEMD160.as_raw()
);
}
<span class="attribute">#[cfg(all(any(ossl111, libressl291), not(osslconf = <span class="string">&quot;OPENSSL_NO_SM3&quot;</span>)))]
#[test]
</span><span class="kw">fn </span>test_sm3() {
<span class="kw">let </span>tests = [(
<span class="string">&quot;616263&quot;</span>,
<span class="string">&quot;66c7f0f462eeedd9d1f2d46bdc10e4e24167c4875cf2f7a2297da02b8f4ba8e0&quot;</span>,
)];
<span class="kw">for </span>test <span class="kw">in </span>tests.iter() {
hash_test(MessageDigest::sm3(), test);
}
<span class="macro">assert_eq!</span>(MessageDigest::sm3().block_size(), <span class="number">64</span>);
<span class="macro">assert_eq!</span>(MessageDigest::sm3().size(), <span class="number">32</span>);
<span class="macro">assert_eq!</span>(MessageDigest::sm3().type_().as_raw(), Nid::SM3.as_raw());
}
<span class="attribute">#[test]
</span><span class="kw">fn </span>from_nid() {
<span class="macro">assert_eq!</span>(
MessageDigest::from_nid(Nid::SHA256).unwrap().as_ptr(),
MessageDigest::sha256().as_ptr()
);
}
<span class="attribute">#[test]
</span><span class="kw">fn </span>from_name() {
<span class="macro">assert_eq!</span>(
MessageDigest::from_name(<span class="string">&quot;SHA256&quot;</span>).unwrap().as_ptr(),
MessageDigest::sha256().as_ptr()
)
}
}
</code></pre></div>
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