Browsing by Subject "Metadata management"

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    Practical integrity protection mechanisms for large-scale memory systems
    (2023-04-19) Fakhrzadehgan, Seyed Ali; Erez, Mattan; Qureshi, Moinuddin K; Orshansky, Michael E; Witchel, Emmett; Tiwari, Mohit
    Trusting the data center and remote computing infrastructure is crucial for the users to move their code and data to the cloud and enable future distributed applications. To this end, secure processors protect the confidentiality and integrity of off-chip data. While recent products offer memory encryption at a low cost, existing integrity protection mechanisms impose significant overheads in terms of performance and power. In my dissertation, I study three aspects to lower these overheads and improve the scalability of integrity protection for future large-scale memories. First, I introduce SafeGuard, a low-cost integrity protection scheme that provides integrity protection with error correction for existing ECC memories. Then, I introduce SecDDR, a novel approach for replay attack protection that scales to any memory capacity without incurring the overheads of conventional protection schemes. Finally, I study different DRAM-aware data and metadata organizations to lower the cost of integrity protection for non-ECC modules.