topic Sealing with MRSIGNER in Intel® Software Guard Extensions (Intel® SGX)

Sealing with MRSIGNER

Elephant — Thu, 19 Oct 2017 02:26:26 GMT

Hi,

I am currently doing a Sealing experiment. When I seal some chunk of data on one machine with an enclave signed with SIGNA.pem, will I be able to unseal it on another machine with the same enclave code signed with SIGNA.pem too?

It returns the following error: SGX_ERROR_INVALID_CPUSVN. Why is this so? Is this the expected result given the scenario above?

Thanks!

Kind Regards,
Elephant

The unsealing process must be

Hoang_N_Intel — Thu, 19 Oct 2017 15:47:26 GMT

The unsealing process must be done in the same system because the sealed data is encrypted in the enclave, using the encryption key that is derived from the CPU specific to that system.

For more information about sealing, please watch this video https://software.intel.com/en-us/videos/how-to-seal-data-in-intel-sgx

The Sealing key is derived

you_w_ — Fri, 27 Oct 2017 03:12:54 GMT

The Sealing key is derived from both MRSIGNER and Platform information, Thus you can only unseal it on a same platform.

Regards,

you