pub type mbedtls_pk_rsa_alt_sign_func = Option<unsafe extern "C" fn(ctx: *mut c_void, f_rng: Option<unsafe extern "C" fn(arg1: *mut c_void, arg2: *mut c_uchar, arg3: usize) -> c_int>, p_rng: *mut c_void, md_alg: mbedtls_md_type_t, hashlen: c_uint, hash: *const c_uchar, sig: *mut c_uchar) -> c_int>;
enum mbedtls_pk_rsa_alt_sign_func {
None,
Some(unsafe extern "C" fn(_: *mut c_void, _: Option<unsafe extern "C" fn(_: *mut c_void, _: *mut u8, _: usize) -> i32>, _: *mut c_void, _: u32, _: u32, _: *const u8, _: *mut u8) -> i32),
}