Function openssl_sys::PEM_write_bio_ECPrivateKey

pub unsafe extern "C" fn PEM_write_bio_ECPrivateKey(
    bio: *mut BIO,
    key: *mut EC_KEY,
    cipher: *const EVP_CIPHER,
    kstr: *mut c_uchar,
    klen: c_int,
    callback: pem_password_cb,
    user_data: *mut c_void
) -> c_int