Sgx Memory

[khanhct-viosoft]

Hi all, I have a issue related sgx memory. Please help me to fix it.

• Before entering enclave. I printed a param master_key = 036de217f5add709d5b2bcd0b8a0714fd656b76eaa8bb698e7448394f032e59d Then I pass it to enclave via a ecall.
• However. when I print it in enclave . I got masterkey=036de217f5add709d5b2bcd0b8a0714fd656b76eaa8bb698e7448394f032e59d����2� ! I don't know why did "����2_� ! " added ? Although I copied it to a new pointer Encalve Code: unsigned char* _master_key = new unsigned char[64]; memset(_master_key, 0, 64); memcpy(_master_key, (const unsigned char*)master_key, 64); LL_CRITICAL("master_key= %s \n", _master_key); delete[] _master_key; Thank you!

[andyzyb]

I guess the _master_key is not Null terminated. Should be "new unsigned char[65]; memset(_master_key, 0, 65)"?

[khanhct-viosoft]

Thank @andyzyb But it don't work. I got master_key=036de217f5add709d5b2bcd0b8a0714fd656b76eaa8bb698e7448394f032e59d��k
�p*

[andyzyb]

What is LL_CRITICAL? Please make sure when you pass the buffer to outside Enclave, it also be NULL terminated and pass the last "\0" out as well. It looks the print goes beyond the buffer boundary.

[khanhct-viosoft]

Thank @andyzyb it work. It is because of LL_CRITICAL.