ShieldMMU adds a Merkle-tree-based integrity check for page table entries in the MMU so that a malicious OS clearing present bits to spy on SGX enclaves is detected, and execution continues using the originally mapped physical page.
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ShieldMMU: Detecting and Defending against Controlled-Channel Attacks in Shielding Memory System
ShieldMMU adds a Merkle-tree-based integrity check for page table entries in the MMU so that a malicious OS clearing present bits to spy on SGX enclaves is detected, and execution continues using the originally mapped physical page.