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&lt;title&gt;EVP_PKEY_meth_get_count&lt;/title&gt;
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&lt;ul id=&quot;index&quot;&gt;
  &lt;li&gt;&lt;a href=&quot;#NAME&quot;&gt;NAME&lt;/a&gt;&lt;/li&gt;
  &lt;li&gt;&lt;a href=&quot;#SYNOPSIS&quot;&gt;SYNOPSIS&lt;/a&gt;&lt;/li&gt;
  &lt;li&gt;&lt;a href=&quot;#DESCRIPTION&quot;&gt;DESCRIPTION&lt;/a&gt;&lt;/li&gt;
  &lt;li&gt;&lt;a href=&quot;#RETURN-VALUES&quot;&gt;RETURN VALUES&lt;/a&gt;&lt;/li&gt;
  &lt;li&gt;&lt;a href=&quot;#SEE-ALSO&quot;&gt;SEE ALSO&lt;/a&gt;&lt;/li&gt;
  &lt;li&gt;&lt;a href=&quot;#COPYRIGHT&quot;&gt;COPYRIGHT&lt;/a&gt;&lt;/li&gt;
&lt;/ul&gt;

&lt;h1 id=&quot;NAME&quot;&gt;NAME&lt;/h1&gt;

&lt;p&gt;EVP_PKEY_meth_get_count, EVP_PKEY_meth_get0, EVP_PKEY_meth_get0_info - enumerate public key methods&lt;/p&gt;

&lt;h1 id=&quot;SYNOPSIS&quot;&gt;SYNOPSIS&lt;/h1&gt;

&lt;pre&gt;&lt;code&gt; #include &amp;lt;openssl/evp.h&amp;gt;

 size_t EVP_PKEY_meth_get_count(void);
 const EVP_PKEY_METHOD *EVP_PKEY_meth_get0(size_t idx);
 void EVP_PKEY_meth_get0_info(int *ppkey_id, int *pflags,
                              const EVP_PKEY_METHOD *meth);&lt;/code&gt;&lt;/pre&gt;

&lt;h1 id=&quot;DESCRIPTION&quot;&gt;DESCRIPTION&lt;/h1&gt;

&lt;p&gt;EVP_PKEY_meth_count() returns a count of the number of public key methods available: it includes standard methods and any methods added by the application.&lt;/p&gt;

&lt;p&gt;EVP_PKEY_meth_get0() returns the public key method &lt;b&gt;idx&lt;/b&gt;. The value of &lt;b&gt;idx&lt;/b&gt; must be between zero and EVP_PKEY_meth_get_count() - 1.&lt;/p&gt;

&lt;p&gt;EVP_PKEY_meth_get0_info() returns the public key ID (a NID) and any flags associated with the public key method &lt;b&gt;*meth&lt;/b&gt;.&lt;/p&gt;

&lt;h1 id=&quot;RETURN-VALUES&quot;&gt;RETURN VALUES&lt;/h1&gt;

&lt;p&gt;EVP_PKEY_meth_count() returns the number of available public key methods.&lt;/p&gt;

&lt;p&gt;EVP_PKEY_meth_get0() return a public key method or &lt;b&gt;NULL&lt;/b&gt; if &lt;b&gt;idx&lt;/b&gt; is out of range.&lt;/p&gt;

&lt;p&gt;EVP_PKEY_meth_get0_info() does not return a value.&lt;/p&gt;

&lt;h1 id=&quot;SEE-ALSO&quot;&gt;SEE ALSO&lt;/h1&gt;

&lt;p&gt;&lt;a href=&quot;../man3/EVP_PKEY_new.html&quot;&gt;EVP_PKEY_new(3)&lt;/a&gt;&lt;/p&gt;

&lt;h1 id=&quot;COPYRIGHT&quot;&gt;COPYRIGHT&lt;/h1&gt;

&lt;p&gt;Copyright 2002-2017 The OpenSSL Project Authors. All Rights Reserved.&lt;/p&gt;

&lt;p&gt;Licensed under the OpenSSL license (the &amp;quot;License&amp;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 &lt;a href=&quot;https://www.openssl.org/source/license.html&quot;&gt;https://www.openssl.org/source/license.html&lt;/a&gt;.&lt;/p&gt;


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