topic Hi, in Intel® Software Guard Extensions (Intel® SGX)

About Libc functions in enclave.

sera_l_ — Mon, 22 May 2017 08:08:45 GMT

I have a question about using libc in enclave.

Should I make all wrapper function (ocall) of libc for using libc functions in enclave?

when I see some example code of others, They make only wrapper functions of libc functions like open, read, mkdir.

But some functions like memcpy, memset are used directly without wrapping.

please help me:)

Anusha_K_Intel — Tue, 23 May 2017 07:07:57 GMT

Hi,

As for the C++ standard library(libc++), most functions will work just as its untrusted counterpart,

But here is a high level summary of features that are not supported inside the enclave for which you need to use an OCALL:

Regards,

Anusha.