element_random() return the same GT value

[HuangMinming]

Hi,
I want to generate a random GT, and use the code below. However, every time I start the program, it return the same value. Is there any solution, thanks.
element_t m;
element_init_GT(m, pairing);
element_random(m);

[HuangMinming]

I think there is a solution.
We can call sgx_read_rand() to generate a random, and call pbc_random_set_deterministic() to complete random set.
After that, element_random() will return different element every time.
I think pbc use /dev/urandom as the default seed which cause the problem. Because sgx could not open /dev/urandom.