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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><html> <head> <title>Generate signature</title> <meta http-equiv="content-type" content="text/html; charset=UTF-8"> </head> <body><div style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="function.openssl-seal.html">openssl_seal</a></div> <div class="next" style="text-align: right; float: right;"><a href="function.openssl-verify.html">openssl_verify</a></div> <div class="up"><a href="ref.openssl.html">OpenSSL Functions</a></div> <div class="home"><a href="index.html">PHP Manual</a></div></div><hr /><div id="function.openssl-sign" class="refentry"> <div class="refnamediv"> <h1 class="refname">openssl_sign</h1> <p class="verinfo">(PHP 4 >= 4.0.4, PHP 5)</p><p class="refpurpose"><span class="refname">openssl_sign</span> — <span class="dc-title">Generate signature</span></p> </div> <div class="refsect1 description"> <h3 class="title">Description</h3> <div class="methodsynopsis dc-description"> <span class="type">bool</span> <span class="methodname"><b><b>openssl_sign</b></b></span> ( <span class="methodparam"><span class="type">string</span> <tt class="parameter">$data</tt></span> , <span class="methodparam"><span class="type">string</span> <tt class="parameter reference">&$signature</tt></span> , <span class="methodparam"><span class="type"><a href="language.pseudo-types.html#language.types.mixed" class="type mixed">mixed</a></span> <tt class="parameter">$priv_key_id</tt></span> [, <span class="methodparam"><span class="type">int</span> <tt class="parameter">$signature_alg</tt></span> ] )</div> <p class="para rdfs-comment"> <b>openssl_sign()</b> computes a signature for the specified <i><tt class="parameter">data</tt></i> by using SHA1 for hashing followed by encryption using the private key associated with <i><tt class="parameter">priv_key_id</tt></i>. Note that the data itself is not encrypted. </p> </div> <div class="refsect1 parameters"> <h3 class="title">Parameters</h3> <p class="para"> <dl> <dt> <span class="term"><i><tt class="parameter">data</tt></i></span> <dd> <p class="para"> </p> </dd> </dt> <dt> <span class="term"><i><tt class="parameter">signature</tt></i></span> <dd> <p class="para"> If the call was successful the signature is returned in <i><tt class="parameter">signature</tt></i>. </p> </dd> </dt> <dt> <span class="term"><i><tt class="parameter">priv_key_id</tt></i></span> <dd> <p class="para"> </p> </dd> </dt> <dt> <span class="term"><i><tt class="parameter">signature_alg</tt></i></span> <dd> <p class="para"> Defaults to <b><tt>OPENSSL_ALGO_SHA1</tt></b>. For more information see the list of <a href="openssl.signature-algos.html" class="link">Signature Algorithms</a>. </p> </dd> </dt> </dl> </p> </div> <div class="refsect1 returnvalues"> <h3 class="title">Return Values</h3> <p class="para"> Returns <b><tt>TRUE</tt></b> on success or <b><tt>FALSE</tt></b> on failure. </p> </div> <div class="refsect1 changelog"> <h3 class="title">ChangeLog</h3> <p class="para"> <table class="informaltable"> <colgroup> <thead valign="middle"> <tr valign="middle"> <th colspan="1">Version</th> <th colspan="1">Description</th> </tr> </thead> <tbody valign="middle" class="tbody"> <tr valign="middle"> <td colspan="1" rowspan="1" align="left">5.0.0</td> <td colspan="1" rowspan="1" align="left"> The <i><tt class="parameter">signature_alg</tt></i> parameter was added. </td> </tr> </tbody> </colgroup> </table> </p> </div> <div class="refsect1 examples"> <h3 class="title">Examples</h3> <p class="para"> <div class="example"> <p><b>Example #1 <b>openssl_sign()</b> example</b></p> <div class="example-contents"><div class="phpcode"><code><span style="color: #000000"><span style="color: #0000BB"><?php<br /></span><span style="color: #FF8000">// $data is assumed to contain the data to be signed<br /><br />// fetch private key from file and ready it<br /></span><span style="color: #0000BB">$fp </span><span style="color: #007700">= </span><span style="color: #0000BB">fopen</span><span style="color: #007700">(</span><span style="color: #DD0000">"/src/openssl-0.9.6/demos/sign/key.pem"</span><span style="color: #007700">, </span><span style="color: #DD0000">"r"</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$priv_key </span><span style="color: #007700">= </span><span style="color: #0000BB">fread</span><span style="color: #007700">(</span><span style="color: #0000BB">$fp</span><span style="color: #007700">, </span><span style="color: #0000BB">8192</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">fclose</span><span style="color: #007700">(</span><span style="color: #0000BB">$fp</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$pkeyid </span><span style="color: #007700">= </span><span style="color: #0000BB">openssl_get_privatekey</span><span style="color: #007700">(</span><span style="color: #0000BB">$priv_key</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">// compute signature<br /></span><span style="color: #0000BB">openssl_sign</span><span style="color: #007700">(</span><span style="color: #0000BB">$data</span><span style="color: #007700">, </span><span style="color: #0000BB">$signature</span><span style="color: #007700">, </span><span style="color: #0000BB">$pkeyid</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">// free the key from memory<br /></span><span style="color: #0000BB">openssl_free_key</span><span style="color: #007700">(</span><span style="color: #0000BB">$pkeyid</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">?></span></span></code></div> </div> </div> </p> </div> <div class="refsect1 seealso"> <h3 class="title">See Also</h3> <p class="para"> <ul class="simplelist"> <li class="member"><a href="function.openssl-verify.html" class="function" rel="rdfs-seeAlso">openssl_verify()</a></li> </ul> </p> </div></div><hr /><div style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="function.openssl-seal.html">openssl_seal</a></div> <div class="next" style="text-align: right; float: right;"><a href="function.openssl-verify.html">openssl_verify</a></div> <div class="up"><a href="ref.openssl.html">OpenSSL Functions</a></div> <div class="home"><a href="index.html">PHP Manual</a></div></div></body></html>⌨️ 快捷键说明
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