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Beginner
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Got an error 0xe00d when trying to execute QuoteSamplecode in DCAP

I'm trying to run QuoteSamplecode in DCAP from https://github.com/intel/SGXDataCenterAttestationPrimitives.
I referred to the procedure from https://github.com/bitsyizhan/sgx/blob/master/Intel_SGX_DCAP_Linux_SW_Installation_Guide.pdf.

I installed dcap driver and /dev/sgx appeared. But when executing samplecode, I got error:

This step is optional: the default enclave load policy is persistent:
set the enclave load policy as persistent:succeed!
[load_pce ../pce_wrapper.cpp:123] Error, call sgx_create_enclave for PCE fail [load_pce], SGXError:0001.
Step1: Call sgx_qe_get_target_info:Error in sgx_qe_get_target_info. 0xe00d

Source code said the 0xe00d means 'Unable to load the QE enclave'. I'm confused that whether I didn't install dcap driver correctly? But I didn't got error when I installed. 

Thanks for your time!!! 

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Employee
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What is your OS distribution? And what is your hardware type?

And Please check whether your driver has been installed successfully: check whether the node exist: /dev/sgx

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Beginner
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JUNLI S. (Intel) wrote:

What is your OS distribution? And what is your hardware type?

And Please check whether your driver has been installed successfully: check whether the node exist: /dev/sgx

 

 

Thanks for your reply.

My OS distribution Information is
Linux test 4.15.0-66-generic #75-Ubuntu SMP Tue Oct 1 05:24:09 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux(gcc version 7.4.0 (Ubuntu 7.4.0-1ubuntu1~18.04.1)) 

My hardware type informtion is:
Architecture:        x86_64
CPU op-mode(s):      32-bit, 64-bit
Byte Order:          Little Endian
CPU(s):              4
On-line CPU(s) list: 0-3
Thread(s) per core:  1
Core(s) per socket:  4
Socket(s):           1
NUMA node(s):        1
Vendor ID:           GenuineIntel
CPU family:          6
Model:               158
Model name:          Intel(R) Xeon(R) E-2174G CPU @ 3.80GHz
Stepping:            10
CPU MHz:             800.222
CPU max MHz:         4700.0000
CPU min MHz:         800.0000
BogoMIPS:            7584.00
Virtualization:      VT-x
L1d cache:           32K
L1i cache:           32K
L2 cache:            256K
L3 cache:            8192K
NUMA node0 CPU(s):   0-3

And the node: /dev/sgx exists.

I'm confused whether the appearance of node /dev/sgx  which means that I install the dcap driver correctly?
But why I can't run the dcap sample code successfully?
 

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Employee
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Sorry for my later response.  There are two potential reasons:

1. please check whether you have also installed another SGX driver: check whether there is another node /dev/isgx

2. And please check whether your hardware support Flex Launch Control feature. 

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Beginner
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I think I have the same problem:

de/QuoteGenerationSample$ ./app
This step is optional: the default enclave load policy is persistent:
set the enclave load policy as persistent:succeed!
[load_pce ../pce_wrapper.cpp:123] Error, call sgx_create_enclave for PCE fail [load_pce], SGXError:2006.
Step1: Call sgx_qe_get_target_info:Error in sgx_qe_get_target_info. 0xe00d

And the node: /dev/sgx dosen't exist.  Could you please tell me what should I do?

 

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Moderator
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Hello, you need to correctly install the Intel SGX DCAP driver in order to get /dev/sgx. Please follow the instructions from the installation guide in this directory: https://download.01.org/intel-sgx/latest/dcap-latest/linux/docs/. The binaries are separated by distribution here: https://download.01.org/intel-sgx/latest/dcap-latest/linux/distro/

Also, make sure your processor supports Flexible Launch Control (FLC). Intel® Xeon® E2200 series processors support FLC. 

 

Regards,

Jesus

 

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