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Users are demanding increased data security. As a result, security is rapidlybecoming a first-order design constraint in next generation computing systems.Researchers and practitioners are exploring various security technologies tomeet user demand such as trusted execution environments (e.g., Intel SGX, ARMTrustZone), homomorphic encryption, and differential privacy. Each techniqueprovides some degree of security, but differs with respect to threat coverage,performance overheads, as well as implementation and deployment challenges. Inthis paper, we present a systemization of knowledge (SoK) on these designconsiderations and trade-offs using several prominent security technologies.Our study exposes the need for \textit{software-hardware-security} codesign torealize efficient and effective solutions of securing user data. In particular,we explore how design considerations across applications, hardware, andsecurity mechanisms must be combined to overcome fundamental limitations incurrent technologies so that we can minimize performance overhead whileachieving sufficient threat model coverage. Finally, we propose a set ofguidelines to facilitate putting these secure computing technologies intopractice.

SoK: Opportunities for Software-Hardware-Security Codesign for Next Generation Secure Computing