60 lines
2.1 KiB
HTML
60 lines
2.1 KiB
HTML
|
<?xml version="1.0" ?>
|
||
|
|
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
|
||
|
|
<html xmlns="http://www.w3.org/1999/xhtml">
|
||
|
|
<head>
|
||
|
|
<title>RSA_blinding_on</title>
|
||
|
|
<meta http-equiv="content-type" content="text/html; charset=utf-8" />
|
||
|
|
<link rev="made" href="mailto:nwani@atx-osx1010-2.corp.continuum.io" />
|
||
|
|
</head>
|
||
|
|
|
||
|
|
<body>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
<ul id="index">
|
||
|
|
<li><a href="#NAME">NAME</a></li>
|
||
|
|
<li><a href="#SYNOPSIS">SYNOPSIS</a></li>
|
||
|
|
<li><a href="#DESCRIPTION">DESCRIPTION</a></li>
|
||
|
|
<li><a href="#RETURN-VALUES">RETURN VALUES</a></li>
|
||
|
|
<li><a href="#COPYRIGHT">COPYRIGHT</a></li>
|
||
|
|
</ul>
|
||
|
|
|
||
|
|
<h1 id="NAME">NAME</h1>
|
||
|
|
|
||
|
|
<p>RSA_blinding_on, RSA_blinding_off - protect the RSA operation from timing attacks</p>
|
||
|
|
|
||
|
|
<h1 id="SYNOPSIS">SYNOPSIS</h1>
|
||
|
|
|
||
|
|
<pre><code> #include <openssl/rsa.h>
|
||
|
|
|
||
|
|
int RSA_blinding_on(RSA *rsa, BN_CTX *ctx);
|
||
|
|
|
||
|
|
void RSA_blinding_off(RSA *rsa);</code></pre>
|
||
|
|
|
||
|
|
<h1 id="DESCRIPTION">DESCRIPTION</h1>
|
||
|
|
|
||
|
|
<p>RSA is vulnerable to timing attacks. In a setup where attackers can measure the time of RSA decryption or signature operations, blinding must be used to protect the RSA operation from that attack.</p>
|
||
|
|
|
||
|
|
<p>RSA_blinding_on() turns blinding on for key <b>rsa</b> and generates a random blinding factor. <b>ctx</b> is <b>NULL</b> or a pre-allocated and initialized <b>BN_CTX</b>. The random number generator must be seeded prior to calling RSA_blinding_on().</p>
|
||
|
|
|
||
|
|
<p>RSA_blinding_off() turns blinding off and frees the memory used for the blinding factor.</p>
|
||
|
|
|
||
|
|
<h1 id="RETURN-VALUES">RETURN VALUES</h1>
|
||
|
|
|
||
|
|
<p>RSA_blinding_on() returns 1 on success, and 0 if an error occurred.</p>
|
||
|
|
|
||
|
|
<p>RSA_blinding_off() returns no value.</p>
|
||
|
|
|
||
|
|
<h1 id="COPYRIGHT">COPYRIGHT</h1>
|
||
|
|
|
||
|
|
<p>Copyright 2000-2016 The OpenSSL Project Authors. All Rights Reserved.</p>
|
||
|
|
|
||
|
|
<p>Licensed under the OpenSSL license (the "License"). You may not use this file except in compliance with the License. You can obtain a copy in the file LICENSE in the source distribution or at <a href="https://www.openssl.org/source/license.html">https://www.openssl.org/source/license.html</a>.</p>
|
||
|
|
|
||
|
|
|
||
|
|
</body>
|
||
|
|
|
||
|
|
</html>
|
||
|
|
|
||
|
|
|