Presto: Hardware Acceleration of Ciphers for Hybrid Homomorphic Encryption
Hybrid homomorphic encryption (HHE) combines specialized symmetric ciphers with homomorphic encryption to reduce ciphertext expansion and client cost. For highest throughput/energy for edge deployments, we present Presto, the first FPGA accelerators for the two known CKKS-targeting HHE ciphers, HERA and Rubato. Presto...