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This work presents DDRop, a new primitive that exploits the absence of cryptographic freshness to break the integrity of Intel TDX, Scalable SGX, and AMD SEV-SNP and demonstrates end-to-end attacks on an up-to-date TDX platform.
This paper systematically analyze a set of x86 instructions that directly or indirectly invalidate instruction cache lines, revealing measurable timing asymmetries between cache hits and misses, and shows that these SMC-induced timing artifacts can be leveraged to mount high-resolution cache attacks that are both steal...
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