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Algorithm Design Encryption Technology Trigger Detection
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Abstract
Privacy-preserving deep learning addresses privacy concerns in Machine Learning as a Service (MLaaS) by using Homomorphic Encryption (HE) for linear computations. However, the computational overhead remains a major challenge. While prior work has improved efficiency, most approaches build on models originally designed for plaintext inference. Such models incur architectural inefficiencies when adapted to HE. We argue that substantial gains require networks tailored to HE rather than retrofitting plaintext architectures. Our design has two components: the building block and the overall architecture. First, StriaBlock targets the most expensive HE operation, rotation. It integrates ExRot-Free Convolution and a novel Cross Kernel, eliminating external rotations and requiring only 19