IPPAESInit in Enclave

Maan_Haj_Rachid — Wed, 15 Nov 2017 09:25:04 GMT

Hi,

I am just wondering if IPPAESInit works the same way in the enclave (compiled with sgx_tcrypto) as with the traditional IPP library? I am using this function to initialize the context pointer in order to do AES-CBC encryption (using ippsAESEncryptCBC). Both Enclave and the client program share a key. It seems it is not working properly on the enclave side.

I tried to print the content of the pCtx as an integer in both sides. On the client side (traditional IPP), it gives me a long integer (which is reasonable) and on the enclave it is giving me always 0. I am suspecting that it is not working properly.

I tried to set the key again using ippsAESSetKey, but pCtx (context) is still giving 0.

The project is compiled successfully and IPPAESInit is returning ippStsNoErr on both sides. This is a linux project.

Thank you

Maan

There is nothing wrong with

Maan_Haj_Rachid — Tue, 21 Nov 2017 11:43:41 GMT

There is nothing wrong with the IPPAESInit function inside and outside the enclave. If you have a problem like mine, please make sure that you don't by accident, for any reason, change the encrypted buffer when passed to the enclave (like my situation). It is working fine.

topic IPPAESInit in Enclave in Intel® Software Guard Extensions (Intel® SGX)

IPPAESInit in Enclave

There is nothing wrong with