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Explore the challenges and solutions in confidential computing through this conference presentation that examines how to protect "data in use" for secure remote computation. Learn about the current state of hardware-supported confidential computing technologies from major vendors including Intel SGX, Intel TDX, AMD SEV, and ARM CCA, and understand why these hardware protections alone are insufficient for achieving strong confidentiality guarantees. Discover the critical role of software stack modifications in confidential computing environments where system software on cloud servers is considered untrusted and can observe program execution through various channels. Examine the complex challenge of protecting against information leaks through side channels at multiple layers of abstraction, a problem often overlooked by current hardware protection mechanisms. Gain insights into potential approaches for addressing these security challenges and understand the performance considerations involved in implementing robust confidential computing solutions. The presentation provides both theoretical foundations and practical perspectives on building secure software stacks that can effectively leverage confidential computing hardware while maintaining strong security properties.
