Advances in Cryptology - EUROCRYPT 2025

Public-Key Cryptography and Key-Exchange: Somewhat Homomorphic Encryption from Linear Homomorphism and Sparse LPN.- Leveraging Small Message Spaces for CCA1 Security in Additively Homomorphic and BGN-type Encryption.- Post-Quantum PKE from Unstructured Noisy Linear Algebraic Assumptions: Beyond LWE and Alekhnovich's LPN.- POKÉ: A Compact and Efficient PKE from Higher-dimensional Isogenies.- Re-Randomize and Extract: A Novel Commitment Construction Framework Based on Group Actions.- A reduction from Hawk to the principal ideal problem in a quaternion algebra.- Cryptanalysis of rank-2 module-LIP: a single real embedding is all it takes.- Do Not Disturb a Sleeping Falcon: Floating-Point Error Sensitivity of the Falcon Sampler and Its Consequences.- (Un)breakable curses - re-encryption in the Fujisaki-Okamoto transform.- Generic Anamorphic Encryption, Revisited: New Limitations and Constructions.- Glacius: Threshold Schnorr Signatures from DDH with Full Adaptive Security.- Stronger Security for Threshold Blind Signatures.- Non-Interactive Blind Signatures from RSA Assumption and More.- PAKE Combiners and E cient Post-Quantum Instantiations.- Hybrid Password Authentication Key Exchange in the UC Framework.- Under What Conditions Is Encrypted Key Exchange Actually Secure?