key parameters from a key</p>

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

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

const OSSL_PARAM *EVP_PKEY_gettable_params(EVP_PKEY *pkey);
int EVP_PKEY_get_params(const EVP_PKEY *pkey, OSSL_PARAM params[]);
int EVP_PKEY_get_int_param(const EVP_PKEY *pkey, const char *key_name,
                           int *out);
int EVP_PKEY_get_size_t_param(const EVP_PKEY *pkey, const char *key_name,
                              size_t *out);
int EVP_PKEY_get_bn_param(const EVP_PKEY *pkey, co