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Co-authored-by: He, Jing <jing.j.he@intel.com>
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Intel® Software Guard Extensions SSL

Introduction

The Intel® Software Guard Extensions SSL (Intel® SGX SSL) cryptographic library is intended to provide cryptographic services for Intel® Software Guard Extensions (SGX) enclave applications. The Intel® SGX SSL cryptographic library is based on the underlying OpenSSL* Open Source project, providing a full-strength general purpose cryptography library. Supported OpenSSL version is 1.1.1k. To work with 1.1.0 version please use "openssl_1.1.0" branch.

In order to build Intel® SGX SSL libraries based on old OpenSSL version, checkout the tag with the corresponding versioning, e.g. lin_2.5_1.1.1c. Tag naming convention [lin/win]_<Intel(R) SGX SDK VERSION>_<OpenSSL VERSION>.

License

See License.txt for details.

Documentation

Build Intel® SGX SSL package

Windows

Prerequisites

  • Microsoft Visual Studio 2019
  • Perl
  • NASM (Netwide Assembler)
  • Intel(R) SGX Windows latest release, including SDK, PSW, and driver

(Note: Perl, NASM need to be included in machine's PATH variable)

To build Intel® SGX SSL package in Windows OS:

  1. Download OpenSSL package into openssl_source/ directory. (tar.gz package, e.g. openssl-1.1.1k.tar.gz)
  2. Download and install latest SGX SDK from Intel Developer Zone. You can find installation guide from the same website.
  3. Change the directory to the SGXSSL path and enter the following command:
build_all.cmd <OPENSSL_VERSION> [default == openssl-1.1.1]

This will build the Intel® SGX SSL libraries (libsgx_tsgxssl.lib, libsgx_usgxssl.lib, libsgx_tsgxssl_crypto.lib), which can be found in package/lib/{Win32|X64}/{debug|release}/. And the version with CVE-2020-0551 Mitigation enabled can be found in package/lib/X64/{CVE-2020-0551-CF-Release|CVE-2020-0551-Load-Release}/.

Linux

Prerequisites

  • Perl
  • Toolchain with mitigation (refer to SGX Linux README)
  • Intel(R) SGX Linux latest release, including SDK, PSW, and driver

To build Intel® SGX SSL package in Linux OS:

  1. Download OpenSSL 1.1.1k package into openssl_source/ directory. (tar.gz package, e.g. openssl-1.1.1k.tar.gz)
  2. Download and install latest SGX SDK from 01.org. You can find installation guide in the same website.
  3. Source SGX SDK's environment variables.
  4. Cd to Linux/ directory and run:
make all test

This will build and test the Intel® SGX SSL libraries (libsgx_tsgxssl.a, libsgx_usgxssl.a, libsgx_tsgxssl_crypto.a), which can be found in package/lib64/. And the Intel® SGX SSL trusted libraries (libsgx_tsgxssl.lib, libsgx_tsgxssl_crypto.lib) with CVE-2020-0551 Mitigation enabled can be found in package/lib64/{cve_2020_0551_cf|cve_2020_0551_load}/.

Available make flags:

  • DEBUG={1,0}: Libraries build mode, with debug symbols or without.
  • SGX_MODE={HW,SIM}: SGX feature mode. Hardware/Simulation
  • DESTDIR=<PATH>: Directory realpath to install Intel® SGX SSL libraries in. Default /opt/intel/sgxssl/
  • VERBOSE={1,0}: Makefile verbose mode. Print compilation commands before executing it.
  • NO_THREADS={1,0}: Enable "no-threads" in the OpenSSL's build configuration options

To install Intel® SGX SSL libraries in Linux OS, run:

make all test
sudo make install