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+Intel(R) Software Guard Extensions for Linux\* OS
+================================================
+
+# linux-sgx
+
+Introduction
+------------
+Intel(R) Software Guard Extensions (Intel(R) SGX) is an Intel technology for application developers seeking to protect select code and data from disclosure or modification.
+
+The Linux SGX software stack is comprised of the SGX driver, the SGX SDK, and the SGX Platform Software. The SGX SDK and SGX PSW are hosted in the [linux-sgx](https://github.com/01org/linux-sgx) project.
+
+The [linux-sgx-driver](https://github.com/01org/linux-sgx-driver) project hosts the out-of-tree driver for the Linux SGX software stack, which will be used until the driver upstreaming process is complete. 
+
+License
+-------
+See License.txt for details.
+
+Documentation
+-------------
+- [Intel(R) SGX for Linux\* OS][1] project home page on [01.org](http://01.org)
+- [Intel(R) SGX Programming Reference][2]
+[1]: https://01.org/intel-softwareguard-extensions
+[2]: https://software.intel.com/sites/default/files/managed/48/88/329298-002.pdf
+
+Build and Install the Intel(R) SGX Driver
+-----------------------------------------
+Follow the instructions in the [linux-sgx-driver](https://github.com/01org/linux-sgx-driver) project to build and install the SGX driver.
+
+Build the Intel(R) SGX SDK and Intel(R) SGX PSW Package
+-------------------------------------------------------
+###Prerequisites:
+- Ensure that you have the following required operating systems:
+  Ubuntu\*-14.04-LTS 64bits
+- Use the following command to install the required tools to build Intel(R) SGX SDK:
+  `$ sudo apt-get install build-essential ocaml automake autoconf libtool`
+- Use the following command to install additional required tools to build Intel(R) SGX PSW:
+  `$ sudo apt-get install libcurl4-openssl-dev protobuf-compiler protobuf-c-compiler libprotobuf-dev libprotobuf-c0-dev`
+- Use the script *download_prebuilt.sh* inside source code package to download prebuilt binaries to prebuilt folder
+  You may need set http proxy for wget tool used by the script (such as `export http_proxy=http://test-proxy:test-port`)
+  `$ ./download_prebuilt.sh`
+
+###Build the Intel(R) SGX SDK and Intel(R) SGX PSW
+The following steps describe how to build the Intel SGX SDK and PSW. You can build the project according to your requirement.
+1. To build both Intel SGX SDK and PSW with default configuration, enter the following command:
+   `$ make`
+   You can find the tools and libraries generated in the `build/linux` directory.
+   Note: You can also go to the sdk folder and use the `make` command to build the Intel SGX SDK component only. However, the building of PSW component is dependent on the building result of Intel SGX SDK.
+2. To build Intel SGX SDK and PSW with debug information, enter the following command:
+   `$ make DEBUG=1`
+3. To clean the files generated by previous `make` command, enter the following command:
+   `$ make clean`
+
+###Build Intel(R) SGX SDK Installer
+To build Intel(R) SGX SDK installer, enter the following command:
+    `$ make sdk_install_pkg`
+You can find the generated Intel SGX SDK installer `sgx_linux_x64_sdk_${version}.bin` located under `linux/installer/bin/`, where `${version}` refers to the version number.
+
+###Build Intel(R) SGX PSW Installer
+To build Intel(R) SGX PSW installer, enter the following command:
+    `$ make psw_install_pkg`
+You can find the generated Intel SGX PSW installer `sgx_linux_x64_psw_${version}.bin` located under `linux/installer/bin/`, where `${version}` refers to the version number.
+
+Install Intel(R) SGX SDK
+------------------------
+###Prerequisites
+- Ensure that you have the following required operating systems:
+  Ubuntu\*-14.04-LTS
+- Use the following command to install the required tool to use Intel(R) SGX SDK:
+  `$ sudo apt-get install build-essential`
+
+###Install Intel(R) SGX SDK
+To install Intel(R) SGX SDK, execute the installer with root privilege:
+    `$ sudo ./sgx_linux_x64_sdk_${version}.bin `
+
+###Test Intel(R) SGX SDK Package with the Sample Codes
+1. Copy the sample codes installed by Intel(R) SGX SDK package into your work folder, such as
+   `$ cp -r /opt/intel/sgxsdk/SampleCode ~`
+2. Compile and run each sample codes in the simulation mode to make sure the package works well.
+   `$ cd SampleCode/LocalAttestation`
+   `$ make`
+   `$ ./app`
+   Use similar commands for other sample codes.
+
+###Compile and Run the Sample Codes in the Hardware Mode
+If you use an SGX hardware enabled machine, you need to run the sample codes in the hardware mode.
+Ensure that you install SGX driver and Intel(R) SGX PSW installer on the machine.
+See the topic, Install Intel(R) SGX PSW, on how to install the PSW package.
+1. Copy the sample codes installed by the Intel(R) SGX SDK package into your work folder, such as
+   `$ cp -r /opt/intel/sgxsdk/SampleCode ~`
+2. Compile and run each sample codes in the debug mode.
+   `$ cd SampleCode/LocalAttestation`
+   `$ make SGX_MODE=HW SGX_DEBUG=1`
+   `$ ./app`
+   Use similar commands for other sample codes.
+
+Install Intel(R) SGX PSW
+------------------------
+###Prerequisites
+- Ensure that you have the following required operating systems:
+  Ubuntu\*-14.04-LTS 64bits
+- Ensure that you have the following required hardware:
+  6th Generation Intel(R) Core(TM) Processor (code named Skylake)
+- Configure the system with the **SGX hardware enabled** option and install SGX driver in advance.
+  See the topic, Build and Install the Intel(R) SGX Driver, on how to install the SGX driver.
+- Install the library using the following command:
+  `$ sudo apt-get install libcurl4-openssl-dev libprotobuf-dev libprotobuf-c0-dev`
+
+###Install Intel(R) SGX PSW
+To install Intel(R) SGX PSW, execute the installer with root privilege:
+    `$ sudo ./sgx_linux_x64_psw_${version}.bin`
+
+###Start or Stop aesmd Service
+The Intel(R) SGX PSW installer installs an aesmd service in your machine which is running in a special linux account aesmd.
+To stop the service: `$ sudo service aesmd stop`
+To start the service: `$ sudo service aesmd start`
+To restart the service: `$ sudo service aesmd restart`
+
+###Configure the Proxy for aesmd Service
+The aesmd service uses HTTP protocol to initialize some services.
+If proxy is required for HTTP protocol, you may need manually setup the proxy for aesmd service.
+You should manually edit file `/etc/aesmd.conf` (refer the comment in the file) to set the proxy for aesmd service.
+After you configure the proxy, you need to restart the service to enable the proxy.
+