nst char *key_name,
                          BIGNUM **bn);
int EVP_PKEY_get_utf8_string_param(const EVP_PKEY *pkey, const char *key_name,
                                   char *str, size_t max_buf_sz,
                                   size_t *out_len);
int EVP_PKEY_get_octet_string_param(const EVP_PKEY *pkey, const char *key_name,
                                    unsigned char *buf, size_t max_buf_sz,
                                    size_t *out_len);</code></pre>

<h1 id="DESCRIPTION">DESCRIPTION