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<?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>DSA_size</title> <meta http-equiv="content-type" content="text/html; charset=utf-8" /> <link rev="made" href="mailto:root@hsxx.drive.ne.jp" /> </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="#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>DSA_size, DSA_bits, DSA_security_bits - get DSA signature size, key bits or security bits</p> <p> </p> <hr /> <h1><a name="synopsis">SYNOPSIS</a></h1> <pre> #include <openssl/dsa.h></pre> <pre> int DSA_size(const DSA *dsa); int DSA_bits(const DSA *dsa); int DSA_security_bits(const DSA *dsa);</pre> <p> </p> <hr /> <h1><a name="description">DESCRIPTION</a></h1> <p><code>DSA_size()</code> returns the maximum size of an ASN.1 encoded DSA signature for key <strong>dsa</strong> in bytes. It can be used to determine how much memory must be allocated for a DSA signature.</p> <p><strong>dsa->q</strong> must not be <strong>NULL</strong>.</p> <p><code>DSA_bits()</code> returns the number of bits in key <strong>dsa</strong>: this is the number of bits in the <strong>p</strong> parameter.</p> <p><code>DSA_security_bits()</code> returns the number of security bits of the given <strong>dsa</strong> key. See <em>BN_security_bits(3)</em>.</p> <p> </p> <hr /> <h1><a name="return_values">RETURN VALUES</a></h1> <p><code>DSA_size()</code> returns the signature size in bytes.</p> <p><code>DSA_bits()</code> returns the number of bits in the key.</p> <p> </p> <hr /> <h1><a name="see_also">SEE ALSO</a></h1> <p><em>DSA_new(3)</em>, <em>DSA_sign(3)</em></p> <p> </p> <hr /> <h1><a name="copyright">COPYRIGHT</a></h1> <p>Copyright 2000-2018 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> </body> </html>