<!DOCTYPE html> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> <meta name="viewport" content="width=device-width, initial-scale=1"> <meta name="theme-color" content="#375EAB"> <title>sha1 - The Go Programming Language</title> <link type="text/css" rel="stylesheet" href="../../../lib/godoc/style.css"> <link rel="stylesheet" href="../../../lib/godoc/jquery.treeview.css"> <script type="text/javascript">window.initFuncs = [];</script> </head> <body> <div id='lowframe' style="position: fixed; bottom: 0; left: 0; height: 0; width: 100%; border-top: thin solid grey; background-color: white; overflow: auto;"> ... </div><!-- #lowframe --> <div id="topbar" class="wide"><div class="container"> <div class="top-heading" id="heading-wide"><a href="http://localhost:6060/">The Go Programming Language</a></div> <div class="top-heading" id="heading-narrow"><a href="http://localhost:6060/">Go</a></div> <a href="index.html#" id="menu-button"><span id="menu-button-arrow">▽</span></a> <form method="GET" action="http://localhost:6060/search"> <div id="menu"> <a href="http://localhost:6060/doc/">Documents</a> <a href="http://localhost:6060/pkg/">Packages</a> <a href="http://localhost:6060/project/">The Project</a> <a href="http://localhost:6060/help/">Help</a> <a href="http://localhost:6060/blog/">Blog</a> <input type="text" id="search" name="q" class="inactive" value="Search" placeholder="Search"> </div> </form> </div></div> <div id="page" class="wide"> <div class="container"> <h1>Package sha1</h1> <div id="nav"></div> <!-- Copyright 2009 The Go Authors. All rights reserved. Use of this source code is governed by a BSD-style license that can be found in the LICENSE file. --> <!-- Note: Static (i.e., not template-generated) href and id attributes start with "pkg-" to make it impossible for them to conflict with generated attributes (some of which correspond to Go identifiers). --> <script type='text/javascript'> document.ANALYSIS_DATA = null; document.CALLGRAPH = null; </script> <div id="short-nav"> <dl> <dd><code>import "crypto/sha1"</code></dd> </dl> <dl> <dd><a href="index.html#pkg-overview" class="overviewLink">Overview</a></dd> <dd><a href="index.html#pkg-index" class="indexLink">Index</a></dd> <dd><a href="index.html#pkg-examples" class="examplesLink">Examples</a></dd> </dl> </div> <!-- The package's Name is printed as title by the top-level template --> <div id="pkg-overview" class="toggleVisible"> <div class="collapsed"> <h2 class="toggleButton" title="Click to show Overview section">Overview ▹</h2> </div> <div class="expanded"> <h2 class="toggleButton" title="Click to hide Overview section">Overview ▾</h2> <p> Package sha1 implements the SHA1 hash algorithm as defined in RFC 3174. </p> </div> </div> <div id="pkg-index" class="toggleVisible"> <div class="collapsed"> <h2 class="toggleButton" title="Click to show Index section">Index ▹</h2> </div> <div class="expanded"> <h2 class="toggleButton" title="Click to hide Index section">Index ▾</h2> <!-- Table of contents for API; must be named manual-nav to turn off auto nav. --> <div id="manual-nav"> <dl> <dd><a href="index.html#pkg-constants">Constants</a></dd> <dd><a href="index.html#New">func New() hash.Hash</a></dd> <dd><a href="index.html#Sum">func Sum(data []byte) [Size]byte</a></dd> </dl> </div><!-- #manual-nav --> <div id="pkg-examples"> <h4>Examples</h4> <dl> <dd><a class="exampleLink" href="index.html#example_New">New</a></dd> <dd><a class="exampleLink" href="index.html#example_Sum">Sum</a></dd> </dl> </div> <h4>Package files</h4> <p> <span style="font-size:90%"> <a href="http://localhost:6060/src/crypto/sha1/sha1.go">sha1.go</a> <a href="http://localhost:6060/src/crypto/sha1/sha1block.go">sha1block.go</a> <a href="http://localhost:6060/src/crypto/sha1/sha1block_decl.go">sha1block_decl.go</a> </span> </p> </div><!-- .expanded --> </div><!-- #pkg-index --> <div id="pkg-callgraph" class="toggle" style="display: none"> <div class="collapsed"> <h2 class="toggleButton" title="Click to show Internal Call Graph section">Internal call graph ▹</h2> </div> <!-- .expanded --> <div class="expanded"> <h2 class="toggleButton" title="Click to hide Internal Call Graph section">Internal call graph ▾</h2> <p> In the call graph viewer below, each node is a function belonging to this package and its children are the functions it calls—perhaps dynamically. </p> <p> The root nodes are the entry points of the package: functions that may be called from outside the package. There may be non-exported or anonymous functions among them if they are called dynamically from another package. </p> <p> Click a node to visit that function's source code. From there you can visit its callers by clicking its declaring <code>func</code> token. </p> <p> Functions may be omitted if they were determined to be unreachable in the particular programs or tests that were analyzed. </p> <!-- Zero means show all package entry points. --> <ul style="margin-left: 0.5in" id="callgraph-0" class="treeview"></ul> </div> </div> <!-- #pkg-callgraph --> <h2 id="pkg-constants">Constants</h2> <pre>const <span id="BlockSize">BlockSize</span> = 64</pre> <p> The blocksize of SHA1 in bytes. </p> <pre>const <span id="Size">Size</span> = 20</pre> <p> The size of a SHA1 checksum in bytes. </p> <h2 id="New">func <a href="http://localhost:6060/src/crypto/sha1/sha1.go?s=900:920#L41">New</a></h2> <pre>func New() <a href="../../hash/index.html">hash</a>.<a href="../../hash/index.html#Hash">Hash</a></pre> <p> New returns a new hash.Hash computing the SHA1 checksum. </p> <div id="example_New" class="toggle"> <div class="collapsed"> <p class="exampleHeading toggleButton">▹ <span class="text">Example</span></p> </div> <div class="expanded"> <p class="exampleHeading toggleButton">▾ <span class="text">Example</span></p> <p>Code:</p> <pre class="code">h := sha1.New() io.WriteString(h, "His money is twice tainted:") io.WriteString(h, " 'taint yours and 'taint mine.") fmt.Printf("% x", h.Sum(nil)) <span class="comment"></pre> <p>Output:</p> <pre class="output">59 7f 6a 54 00 10 f9 4c 15 d7 18 06 a9 9a 2c 87 10 e7 47 bd </pre> </div> </div> <h2 id="Sum">func <a href="http://localhost:6060/src/crypto/sha1/sha1.go?s=2235:2267#L115">Sum</a></h2> <pre>func Sum(data []<a href="../../builtin/index.html#byte">byte</a>) [<a href="index.html#Size">Size</a>]<a href="../../builtin/index.html#byte">byte</a></pre> <p> Sum returns the SHA1 checksum of the data. </p> <div id="example_Sum" class="toggle"> <div class="collapsed"> <p class="exampleHeading toggleButton">▹ <span class="text">Example</span></p> </div> <div class="expanded"> <p class="exampleHeading toggleButton">▾ <span class="text">Example</span></p> <p>Code:</p> <pre class="code">data := []byte("This page intentionally left blank.") fmt.Printf("% x", sha1.Sum(data)) <span class="comment"></pre> <p>Output:</p> <pre class="output">af 06 49 23 bb f2 30 15 96 aa c4 c2 73 ba 32 17 8e bc 4a 96 </pre> </div> </div> <div id="footer"> Build version go1.6.<br> Except as <a href="https://developers.google.com/site-policies#restrictions">noted</a>, the content of this page is licensed under the Creative Commons Attribution 3.0 License, and code is licensed under a <a href="http://localhost:6060/LICENSE">BSD license</a>.<br> <a href="http://localhost:6060/doc/tos.html">Terms of Service</a> | <a href="http://www.google.com/intl/en/policies/privacy/">Privacy Policy</a> </div> </div><!-- .container --> </div><!-- #page --> <!-- TODO(adonovan): load these from <head> using "defer" attribute? --> <script type="text/javascript" src="../../../lib/godoc/jquery.js"></script> <script type="text/javascript" src="../../../lib/godoc/jquery.treeview.js"></script> <script type="text/javascript" src="../../../lib/godoc/jquery.treeview.edit.js"></script> <script type="text/javascript" src="../../../lib/godoc/godocs.js"></script> </body> </html>