SGXIO: Generic Trusted I/O Path for Intel SGX

Samuel Weiser, Mario Werner

Research output: Chapter in Book/Report/Conference proceedingConference paperpeer-review


Application security traditionally strongly relies upon security of the underlying operating system.
However, operating systems often fall victim to software attacks, compromising security of applications as well.
To overcome this dependency, Intel SGX allows to protect application code against a subverted or malicious OS by running it in a hardware-protected enclave.
However, SGX lacks support for generic trusted I/O paths to protect user input and output between enclaves and I/O devices.

This work presents SGXIO, a generic trusted path architecture for SGX, allowing user applications to run securely on top of an untrusted OS, while at the same time supporting trusted paths to generic I/O devices.
To achieve this, SGXIO combines the benefits of SGX's easy programming model with traditional hypervisor-based trusted path architectures.
Moreover, SGXIO can tweak insecure debug enclaves to behave like secure production enclaves.
SGXIO surpasses traditional use cases in cloud computing and digital rights management and makes SGX technology usable for protecting user-centric, local applications against kernel-level keyloggers and likewise.
It is compatible to unmodified operating systems and works on a modern commodity notebook out of the box.
Hence, SGXIO is particularly promising for the broad x86 community to which SGX is readily available.
Original languageEnglish
Title of host publicationProceedings of the Seventh ACM Conference on Data and Application Security and Privacy
Publication statusPublished - 2017
Event7th ACM Conference on Data and Application Security and Privacy - Scottsdale, Arizona, United States
Duration: 22 Mar 201724 Mar 2017


Conference7th ACM Conference on Data and Application Security and Privacy
Abbreviated titleCODASPY 2017
Country/TerritoryUnited States
CityScottsdale, Arizona
Internet address


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