he <b>cipher</b> argument. The cipher should be a standard encryption-only cipher. For example AEAD and XTS ciphers should not be used.</p>

<p>Applications should use the <a href="../man3/EVP_MAC.html">EVP_MAC(3)</a> API instead and set the <b>OSSL_MAC_PARAM_CIPHER</b> parameter on the <b>EVP_MAC_CTX</b> object with the name of the cipher being used.</p>

<h1 id="NOTES">NOTES</h1>

<p>The <b>EVP_PKEY</b> structure is used by various OpenSSL functions which require a general private key without reference to