Sgx-Step - A Practical Attack Framework For Precise Enclave Execution Control

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SGX-Step is an open-source framework to facilitate side-channel attack research on Intel SGX platforms. SGX-Step consists of an adversarial Linux kernel driver and user space library that allow to configure untrusted page table entries and/or x86 APIC timer interrupts completely from user space. Our research results have demonstrated several new and improved enclaved execution attacks that gather side-channel observations at a maximal temporal resolution (i.e., by interrupting the victim enclave after every single instruction). License. SGX-Step is free software, licensed under GPLv3. The SGX-Step logo is derived from Eadweard Muybridge's iconic public domain "Sallie Gardner at a Gallop" photo series, which, like our enclave single-stepping goal, breaks down the galloping horse dynamics into a series of individual photo frames to reveal overall horse gait properties. Abstract Trusted execution environments such as Intel SGX hold the promise of protecting sensitive computations from a potentially compromised operating system. Recent research convincingly demonstrated,....

November 14, 2019
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