#How to use intel power gadget api update

Instead of actual energy measurements, it falls back to a model-based approach, such that same instructions with different data or operands can not be distinguished. Therefore, Intel released microcode updates that change the way the energy consumption is reported if Intel SGX is enabled on the system. With Intel SGX, however, a compromised operating system is within the threat model, rendering this mitigation insufficient.

#How to use intel power gadget api update

To mitigate PLATYPUS, the unprivileged access to the energy consumption has been revoked with an update to the operating system. In addition, we distinguish different Hamming weights of operands or memory loads, threatening constant-time implementations of cryptographic algorithms. We demonstrate this by recovering AES keys from the side-channel resilient AES-NI implementation, as well as RSA keys from an Intel SGX enclave. We show that in addition to distinguishing different keys, it is possible to reconstruct entire cryptographic keys. Our research shows that the Intel RAPL interface can be exploited in way more threatening scenarios. established a covert channel by modulating the energy consumption of the DRAM.

showed that it is possible to distinguish if different cryptographic keys have been processed by the CPU. Previous work already showed limited information leakage caused by the Intel RAPL interface. With interfaces like Intel RAPL, physical access is not required anymore as the measurements can be accessed directly from software. Using an oscilloscope, the attacker monitors the energy consumption of the device. With classical power side-channel attacks, an attacker typically has physical access to a victim device. Using this technique, we recover RSA keys processed by mbed TLS from an SGX enclave. In our work, we combine PLATYPUS with precise execution control of SGX-Step.ДЄs a result, we overcome the hurdle of the limited measuring capabilities of Intel RAPL by repeatedly executing single instructions inside the SGX enclave. With SGX, Intel released a security feature to create isolated environments, so-called enclaves, that are secure even if the operating system is compromised. PLATYPUS can further infer intra-cacheline control flow of applications, break KASLR, leak AES-NI keys from Intel SGX enclaves and the Linux kernel, and establish a timing-independent covert channel. Using PLATYPUS, we demonstrate that we can observe variations in the power consumption to distinguish different instructions and different Hamming weights of operands and memory loads, allowing inference of loaded values. Likewise to the Platypus that uses its ability to find food even in complete darkness, we sense secrets in the processor's energy measurements using Intel RAPL. While they are mammals, they also lay eggs, and males can detect electrical signals with their bill.