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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>
</ul>

<h1 id="NAME">NAME</h1>

<p>EVP_sm4_cbc, EVP_sm4_ecb, EVP_sm4_cfb, EVP_sm4_cfb128, EVP_sm4_ofb, EVP_sm4_ctr - EVP SM4 cipher</p>

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

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

 const EVP_CIPHER *EVP_sm4_cbc(void);
 const EVP_CIPHER *EVP_sm4_ecb(void);
 const EVP_CIPHER *EVP_sm4_cfb(void);
 const EVP_CIPHER *EVP_sm4_cfb128(void);
 const EVP_CIPHER *EVP_sm4_ofb(void);
 const EVP_CIPHER *EVP_sm4_ctr(void);</code></pre>

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

<p>The SM4 blockcipher (GB/T 32907-2016) for EVP.</p>

<p>All modes below use a key length of 128 bits and acts on blocks of 128 bits.</p>

<dl>

<dt id="EVP_sm4_cbc-EVP_sm4_ecb-EVP_sm4_cfb-EVP_sm4_cfb128-EVP_sm4_ofb-EVP_sm4_ctr">EVP_sm4_cbc(), EVP_sm4_ecb(), EVP_sm4_cfb(), EVP_sm4_cfb128(), EVP_sm4_ofb(), EVP_sm4_ctr()</dt>
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<p>The SM4 blockcipher with a 128-bit key in CBC, ECB, CFB, OFB and CTR modes respectively.</p>

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

<p>These functions return a <b>EVP_CIPHER</b> structure that contains the implementation of the symmetric cipher. See <a href="../man3/EVP_CIPHER_meth_new.html">EVP_CIPHER_meth_new(3)</a> for details of the <b>EVP_CIPHER</b> structure.</p>

<h1 id="SEE-ALSO">SEE ALSO</h1>

<p><a href="../man7/evp.html">evp(7)</a>, <a href="../man3/EVP_EncryptInit.html">EVP_EncryptInit(3)</a>, <a href="../man3/EVP_CIPHER_meth_new.html">EVP_CIPHER_meth_new(3)</a></p>

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

<p>Copyright 2017-2018 The OpenSSL Project Authors. All Rights Reserved. Copyright 2017 Ribose Inc. All Rights Reserved.</p>

<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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