openssl-prebuild/linux_amd64/share/doc/openssl/html/man3/X509_new.html
2020-03-02 16:50:34 +00:00

116 lines
3.8 KiB
HTML
Executable File

<?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>X509_new</title>
<meta http-equiv="content-type" content="text/html; charset=utf-8" />
<link rev="made" href="mailto:root@localhost" />
</head>
<body style="background-color: white">
<!-- INDEX BEGIN -->
<div name="index">
<p><a name="__index__"></a></p>
<ul>
<li><a href="#name">NAME</a></li>
<li><a href="#synopsis">SYNOPSIS</a></li>
<li><a href="#description">DESCRIPTION</a></li>
<li><a href="#notes">NOTES</a></li>
<li><a href="#return_values">RETURN VALUES</a></li>
<li><a href="#see_also">SEE ALSO</a></li>
<li><a href="#copyright">COPYRIGHT</a></li>
</ul>
<hr name="index" />
</div>
<!-- INDEX END -->
<p>
</p>
<hr />
<h1><a name="name">NAME</a></h1>
<p>X509_chain_up_ref,
X509_new, X509_free, X509_up_ref - X509 certificate ASN1 allocation functions</p>
<p>
</p>
<hr />
<h1><a name="synopsis">SYNOPSIS</a></h1>
<pre>
#include &lt;openssl/x509.h&gt;</pre>
<pre>
X509 *X509_new(void);
void X509_free(X509 *a);
int X509_up_ref(X509 *a);
STACK_OF(X509) *X509_chain_up_ref(STACK_OF(X509) *x);</pre>
<p>
</p>
<hr />
<h1><a name="description">DESCRIPTION</a></h1>
<p>The X509 ASN1 allocation routines, allocate and free an
X509 structure, which represents an X509 certificate.</p>
<p>X509_new() allocates and initializes a X509 structure with reference count
<strong>1</strong>.</p>
<p>X509_free() decrements the reference count of <strong>X509</strong> structure <strong>a</strong> and
frees it up if the reference count is zero. If <strong>a</strong> is NULL nothing is done.</p>
<p>X509_up_ref() increments the reference count of <strong>a</strong>.</p>
<p>X509_chain_up_ref() increases the reference count of all certificates in
chain <strong>x</strong> and returns a copy of the stack.</p>
<p>
</p>
<hr />
<h1><a name="notes">NOTES</a></h1>
<p>The function X509_up_ref() if useful if a certificate structure is being
used by several different operations each of which will free it up after
use: this avoids the need to duplicate the entire certificate structure.</p>
<p>The function X509_chain_up_ref() doesn't just up the reference count of
each certificate it also returns a copy of the stack, using sk_X509_dup(),
but it serves a similar purpose: the returned chain persists after the
original has been freed.</p>
<p>
</p>
<hr />
<h1><a name="return_values">RETURN VALUES</a></h1>
<p>If the allocation fails, X509_new() returns <strong>NULL</strong> and sets an error
code that can be obtained by <em>ERR_get_error(3)</em>.
Otherwise it returns a pointer to the newly allocated structure.</p>
<p>X509_up_ref() returns 1 for success and 0 for failure.</p>
<p>X509_chain_up_ref() returns a copy of the stack or <strong>NULL</strong> if an error
occurred.</p>
<p>
</p>
<hr />
<h1><a name="see_also">SEE ALSO</a></h1>
<p><em>d2i_X509(3)</em>,
<em>ERR_get_error(3)</em>,
<em>X509_CRL_get0_by_serial(3)</em>,
<em>X509_get0_signature(3)</em>,
<em>X509_get_ext_d2i(3)</em>,
<em>X509_get_extension_flags(3)</em>,
<em>X509_get_pubkey(3)</em>,
<em>X509_get_subject_name(3)</em>,
<em>X509_get_version(3)</em>,
<em>X509_NAME_add_entry_by_txt(3)</em>,
<em>X509_NAME_ENTRY_get_object(3)</em>,
<em>X509_NAME_get_index_by_NID(3)</em>,
<em>X509_NAME_print_ex(3)</em>,
<em>X509_sign(3)</em>,
<em>X509V3_get_d2i(3)</em>,
<em>X509_verify_cert(3)</em></p>
<p>
</p>
<hr />
<h1><a name="copyright">COPYRIGHT</a></h1>
<p>Copyright 2002-2016 The OpenSSL Project Authors. All Rights Reserved.</p>
<p>Licensed under the Apache License 2.0 (the &quot;License&quot;). 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>