ePrint Report: FINAL bootstrap acceleration on FPGA using DSP-free constant-multiplier NTTs Jonas Bertels, Hilder V. L. Pereira, Ingrid Verbauwhede This work showcases Quatorze-bis, a state-of-the-art Number Theoretic Transform circuit for TFHE-like cryptosystems on FPGAs. It contains a novel modular multiplication design for modular multiplication with a constant for a constant modulus. This modular multiplication design…

ePrint Report: Preprocessing Security in Multiple Idealized Models with Applications to Schnorr Signatures and PSEC-KEM Jeremiah Blocki, Seunghoon Lee In modern cryptography, relatively few instantiations of foundational cryptographic primitives are used across most cryptographic protocols. For example, elliptic curve groups are typically instantiated using P-256, P-384, Curve25519, or Curve448, while block ciphers are commonly instantiated…

ePrint Report: Path Privacy and Handovers: Preventing Insider Traceability Attacks During Secure Handovers Rabiah Alnashwan, Benjamin Dowling, Bhagya Wimalasiri The rise of 5G and IoT has shifted secure communication from centralized and homogeneous to a landscape of heterogeneous mobile devices constantly travelling between myriad networks. In such environments, it is desirable for devices to securely…

ePrint Report: PRISM: Simple And Compact Identification and Signatures From Large Prime Degree Isogenies Andrea Basso, Giacomo Borin, Wouter Castryck, Maria Corte-Real Santos, Riccardo Invernizzi, Antonin Leroux, Luciano Maino, Frederik Vercauteren, Benjamin Wesolowski The problem of computing an isogeny of large prime degree from a supersingular elliptic curve of unknown endomorphism ring is assumed to…