<?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>EVP_SIGNATURE-HMAC</title> <meta http-equiv="content-type" content="text/html; charset=utf-8" /> <link rev="made" href="mailto:root@localhost" /> </head> <body> <ul id="index"> <li><a href="#NAME">NAME</a></li> <li><a href="#DESCRIPTION">DESCRIPTION</a></li> <li><a href="#SEE-ALSO">SEE ALSO</a></li> <li><a href="#COPYRIGHT">COPYRIGHT</a></li> </ul> <h1 id="NAME">NAME</h1> <p>EVP_SIGNATURE-HMAC, EVP_SIGNATURE-Siphash, EVP_SIGNATURE-Poly1305, EVP_SIGNATURE-CMAC - The legacy <b>EVP_PKEY</b> MAC signature implementations</p> <h1 id="DESCRIPTION">DESCRIPTION</h1> <p>The algorithms described here have legacy support for creating MACs using <a href="../man3/EVP_DigestSignInit.html">EVP_DigestSignInit(3)</a> and related functions. This is not the preferred way of creating MACs. Instead you should use the newer <a href="../man3/EVP_MAC_init.html">EVP_MAC_init(3)</a> functions. This mechanism is provided for backwards compatibility with older versions of OpenSSL.</p> <p>The same signature parameters can be set using EVP_PKEY_CTX_set_params() as can be set via EVP_MAC_CTX_set_params() for the underlying EVP_MAC. See <a href="../man7/EVP_MAC-HMAC.html">EVP_MAC-HMAC(7)</a>, <a href="../man7/EVP_MAC-Siphash.html">EVP_MAC-Siphash(7)</a>, <a href="../man7/EVP_MAC-Poly1305.html">EVP_MAC-Poly1305(7)</a> and <a href="../man7/EVP_MAC-CMAC.html">EVP_MAC-CMAC(7)</a> for details.</p> <pre><code> See L<EVP_PKEY-HMAC(7)>, L<EVP_PKEY-Siphash(7)>, L<EVP_PKEY-Poly1305(7)> or L<EVP_PKEY-CMAC(7)> for details about parameters that are supported during the creation of an EVP_PKEY.</code></pre> <h1 id="SEE-ALSO">SEE ALSO</h1> <p><a href="../man3/EVP_MAC_init.html">EVP_MAC_init(3)</a>, <a href="../man3/EVP_DigestSignInit.html">EVP_DigestSignInit(3)</a>, <a href="../man7/EVP_PKEY-HMAC.html">EVP_PKEY-HMAC(7)</a>, <a href="../man7/EVP_PKEY-Siphash.html">EVP_PKEY-Siphash(7)</a>, <a href="../man7/EVP_PKEY-Poly1305.html">EVP_PKEY-Poly1305(7)</a>, <a href="../man7/EVP_PKEY-CMAC.html">EVP_PKEY-CMAC(7)</a>, <a href="../man7/EVP_MAC-HMAC.html">EVP_MAC-HMAC(7)</a>, <a href="../man7/EVP_MAC-Siphash.html">EVP_MAC-Siphash(7)</a>, <a href="../man7/EVP_MAC-Poly1305.html">EVP_MAC-Poly1305(7)</a>, <a href="../man7/EVP_MAC-CMAC.html">EVP_MAC-CMAC(7)</a>, <a href="../man7/provider-signature.html">provider-signature(7)</a>,</p> <h1 id="COPYRIGHT">COPYRIGHT</h1> <p>Copyright 2020 The OpenSSL Project Authors. All Rights Reserved.</p> <p>Licensed under the Apache License 2.0 (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>