pub unsafe extern "C" fn EVP_PKEY_meth_set_keygen(
pmeth: *mut evp_pkey_method_st,
keygen_init: Option<unsafe extern "C" fn(_: *mut evp_pkey_ctx_st) -> i32>,
keygen: Option<unsafe extern "C" fn(_: *mut evp_pkey_ctx_st, _: *mut evp_pkey_st) -> i32>,
)