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<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="#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>
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<h1 id="NAME">NAME</h1>

<p>DECLARE_PEM_rw, PEM_read_CMS, PEM_read_bio_CMS, PEM_write_CMS, PEM_write_bio_CMS, PEM_write_DHxparams, PEM_write_bio_DHxparams, PEM_read_ECPKParameters, PEM_read_bio_ECPKParameters, PEM_write_ECPKParameters, PEM_write_bio_ECPKParameters, PEM_read_ECPrivateKey, PEM_write_ECPrivateKey, PEM_write_bio_ECPrivateKey, PEM_read_EC_PUBKEY, PEM_read_bio_EC_PUBKEY, PEM_write_EC_PUBKEY, PEM_write_bio_EC_PUBKEY, PEM_read_NETSCAPE_CERT_SEQUENCE, PEM_read_bio_NETSCAPE_CERT_SEQUENCE, PEM_write_NETSCAPE_CERT_SEQUENCE, PEM_write_bio_NETSCAPE_CERT_SEQUENCE, PEM_read_PKCS8, PEM_read_bio_PKCS8, PEM_write_PKCS8, PEM_write_bio_PKCS8, PEM_write_PKCS8_PRIV_KEY_INFO, PEM_read_bio_PKCS8_PRIV_KEY_INFO, PEM_read_PKCS8_PRIV_KEY_INFO, PEM_write_bio_PKCS8_PRIV_KEY_INFO, PEM_read_SSL_SESSION, PEM_read_bio_SSL_SESSION, PEM_write_SSL_SESSION, PEM_write_bio_SSL_SESSION - PEM object encoding routines</p>

<h1 id="SYNOPSIS">SYNOPSIS</h1>

<pre><code> #include &lt;openssl/pem.h&gt;

 DECLARE_PEM_rw(name, TYPE)

 TYPE *PEM_read_TYPE(FILE *fp, TYPE **a, pem_password_cb *cb, void *u);
 TYPE *PEM_read_bio_TYPE(BIO *bp, TYPE **a, pem_password_cb *cb, void *u);
 int PEM_write_TYPE(FILE *fp, const TYPE *a);
 int PEM_write_bio_TYPE(BIO *bp, const TYPE *a);</code></pre>

<h1 id="DESCRIPTION">DESCRIPTION</h1>

<p>In the description below, <i>TYPE</i> is used as a placeholder for any of the OpenSSL datatypes, such as <i>X509</i>. The macro <b>DECLARE_PEM_rw</b> expands to the set of declarations shown in the next four lines of the synopsis.</p>

<p>These routines convert between local instances of ASN1 datatypes and the PEM encoding. For more information on the templates, see <a href="../man3/ASN1_ITEM.html">ASN1_ITEM(3)</a>. For more information on the lower-level routines used by the functions here, see <a href="../man3/PEM_read.html">PEM_read(3)</a>.</p>

<p>PEM_read_TYPE() reads a PEM-encoded object of <i>TYPE</i> from the file <b>fp</b> and returns it. The <b>cb</b> and <b>u</b> parameters are as described in <a href="../man3/pem_password_cb.html">pem_password_cb(3)</a>.</p>

<p>PEM_read_bio_TYPE() is similar to PEM_read_TYPE() but reads from the BIO <b>bp</b>.</p>

<p>PEM_write_TYPE() writes the PEM encoding of the object <b>a</b> to the file <b>fp</b>.</p>

<p>PEM_write_bio_TYPE() similarly writes to the BIO <b>bp</b>.</p>

<h1 id="NOTES">NOTES</h1>

<p>These functions make no assumption regarding the pass phrase received from the password callback. It will simply be treated as a byte sequence.</p>

<h1 id="RETURN-VALUES">RETURN VALUES</h1>

<p>PEM_read_TYPE() and PEM_read_bio_TYPE() return a pointer to an allocated object, which should be released by calling TYPE_free(), or NULL on error.</p>

<p>PEM_write_TYPE() and PEM_write_bio_TYPE() return the number of bytes written or zero on error.</p>

<h1 id="SEE-ALSO">SEE ALSO</h1>

<p><a href="../man3/PEM_read.html">PEM_read(3)</a>, <a href="../man7/passphrase-encoding.html">passphrase-encoding(7)</a></p>

<h1 id="COPYRIGHT">COPYRIGHT</h1>

<p>Copyright 1998-2018 The OpenSSL Project Authors. All Rights Reserved.</p>

<p>Licensed under the OpenSSL license (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>


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