LazyArc: Dynamic Out-of-Order Engine for High-Throughput FHE

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Fully Homomorphic Encryption (FHE) is a modern cryptographic technique that allows performing computations directly on encrypted data. This makes FHE an indispensable method for privacy-preserving applications, where users' data are encrypted and processed by a potentially untrusted third party. Nevertheless, FHE operations are computationally expensive, often rendering them impractical for realistic scenarios. Notably, a major performance bottleneck for FHE is an operation called bootstrapping