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<title>DSA_size</title>
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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="#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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<p>DSA_size, DSA_bits, DSA_security_bits - get DSA signature size, key bits or security bits</p>

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

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

int DSA_size(const DSA *dsa);
 int DSA_bits(const DSA *dsa);
 int DSA_security_bits(const DSA *dsa);</code></pre>

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

<p>DSA_size() returns the maximum size of an ASN.1 encoded DSA signature for key <b>dsa</b> in bytes. It can be used to determine how much memory must be allocated for a DSA signature.</p>

<p>DSA_bits() returns the number of bits in key <b>dsa</b>: this is the number of bits in the <b>p</b> parameter.</p>

<p>DSA_security_bits() returns the number of security bits of the given <b>dsa</b> key. See <a href="../man3/BN_security_bits.html">BN_security_bits(3)</a>.</p>

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

<p>DSA_size() returns the signature size in bytes.</p>

<p>DSA_bits() returns the number of bits in the key.</p>

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

<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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