pub unsafe extern "C" fn EVP_PKEY_meth_set_ctrl(
pmeth: *mut evp_pkey_method_st,
ctrl: Option<unsafe extern "C" fn(*mut evp_pkey_ctx_st, i32, i32, *mut c_void) -> i32>,
ctrl_str: Option<unsafe extern "C" fn(*mut evp_pkey_ctx_st, *const i8, *const i8) -> i32>,
)