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<title>EVP_PKEY_print_private</title>
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<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="#history">HISTORY</a></li>
<li><a href="#copyright">COPYRIGHT</a></li>
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<h1><a name="name">NAME</a></h1>
<p>EVP_PKEY_print_public, EVP_PKEY_print_private, EVP_PKEY_print_params - public key algorithm printing routines</p>
<p>
</p>
<hr />
<h1><a name="synopsis">SYNOPSIS</a></h1>
<pre>
#include <openssl/evp.h></pre>
<pre>
int EVP_PKEY_print_public(BIO *out, const EVP_PKEY *pkey,
int indent, ASN1_PCTX *pctx);
int EVP_PKEY_print_private(BIO *out, const EVP_PKEY *pkey,
int indent, ASN1_PCTX *pctx);
int EVP_PKEY_print_params(BIO *out, const EVP_PKEY *pkey,
int indent, ASN1_PCTX *pctx);</pre>
<p>
</p>
<hr />
<h1><a name="description">DESCRIPTION</a></h1>
<p>The functions <code>EVP_PKEY_print_public()</code>, <code>EVP_PKEY_print_private()</code> and
<code>EVP_PKEY_print_params()</code> print out the public, private or parameter components
of key <strong>pkey</strong> respectively. The key is sent to BIO <strong>out</strong> in human readable
form. The parameter <strong>indent</strong> indicated how far the printout should be indented.</p>
<p>The <strong>pctx</strong> parameter allows the print output to be finely tuned by using
ASN1 printing options. If <strong>pctx</strong> is set to NULL then default values will
be used.</p>
<p>
</p>
<hr />
<h1><a name="notes">NOTES</a></h1>
<p>Currently no public key algorithms include any options in the <strong>pctx</strong> parameter.</p>
<p>If the key does not include all the components indicated by the function then
only those contained in the key will be printed. For example passing a public
key to <code>EVP_PKEY_print_private()</code> will only print the public components.</p>
<p>
</p>
<hr />
<h1><a name="return_values">RETURN VALUES</a></h1>
<p>These functions all return 1 for success and 0 or a negative value for failure.
In particular a return value of -2 indicates the operation is not supported by
the public key algorithm.</p>
<p>
</p>
<hr />
<h1><a name="see_also">SEE ALSO</a></h1>
<p><em>EVP_PKEY_CTX_new(3)</em>,
<em>EVP_PKEY_keygen(3)</em></p>
<p>
</p>
<hr />
<h1><a name="history">HISTORY</a></h1>
<p>These functions were added in OpenSSL 1.0.0.</p>
<p>
</p>
<hr />
<h1><a name="copyright">COPYRIGHT</a></h1>
<p>Copyright 2006-2017 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>
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