Comment on Reversing the AMD Secure Processor (PSP) – Part 2: Cryptographic Co-ProcessorparentComments−password43212ySignal Private Messenger built private contact discovery and secure value recovery using Intel Software Guard eXtensions (SGX), similar to AMD Secure Memory Encryption (both usually used for DRM).https://signal.org/blog/private-contact-discovery/ (2017) https://signal.org/blog/secure-value-recovery/ (2019)Intel SGX is mostly orthogonal to Intel IME but each is an additional attack surface with enough privilege/persistence to assist attacks on the other.
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Signal Private Messenger built private contact discovery and secure value recovery using Intel Software Guard eXtensions (SGX), similar to AMD Secure Memory Encryption (both usually used for DRM).
https://signal.org/blog/private-contact-discovery/ (2017) https://signal.org/blog/secure-value-recovery/ (2019)
Intel SGX is mostly orthogonal to Intel IME but each is an additional attack surface with enough privilege/persistence to assist attacks on the other.